eChapters

Corpus luteum, one of the biological clock of the estrous cycle and pregnancy, is known foremost for its production of progesterone that blocks the pituitary release of gonadotrophins and prepare the uterus for pregnancy. The ovarian follicle wall consists of granulosa cell and theca cells vascularised and luteinize after ovulation to from a corpus luteum. Corpus luteum is temporary steroid- producing gland undergoes marked structural and functional changes far a short time span during its development functional life and regression. During estrous cycle, the corpus luteum undergoes an initial period of growth (metestrus), followed by a period of maximal function (diestus) and finally by a period of regression (proestrus) preceding the next ovulation (Robert, 1986). The most prominent cell in the CL is the large luteal steroidogenic cell.

Ultrasound imaging has been used to detect and measure the corpus luteum throughout the estrous cycle and corpus luteum has been characterized during pregnancy and non pregnancy. Changes in corpus luteum diameter as detected by ultrasonography are highly correlated with progesterone production. A high correlation has been found in the ultrasonographic detection of bovine corpora lutea (Lean et al., 1992) and between luteal tissue area measured ultrasonographically and plasma progesterone concentration (Bergfelt et al., 1989).

This paper primarily considers the general principles of ultrasound and instrumentation and its application in camel reproduction.

Ultrasound waves are mechanical pressure waves similar to audible sound waves and must have a medium in which to audible sound waves and must have a medium in which to propagate. The “frequency” (f) is the number of high- or low- pressure regions crossing each area of tissue each second. The frequencies of the sound waves used in medical ultrasound are much higher than the human audible range (20 to 16000 Hz); hence the waves are called ultrasound. Ultrasound instrumentation

The gray scale imaging equipment uses only time delay and echo amplitude information in creating the image. Most equipment contains the same basic building- block circuits; transmitter, receiver, display and scan converter.

Transmitter

The first circuit building block, the transmitter circuit produces either a high- amplitude, short- duration voltage shock pulse or a driving voltage waveform. Then an output control attenuates the amplitude of the shock pulse or the driving voltage wave form before it is applied to the transducer.

Mammary glands are important part of body which synthesize and store the milk in between milkings or suckling by the calf. Therefore it attains prime importance in any dairy animal. However, it has received little attention in buffaloes till now. Buffalo presents several unique characteristics in terms of milk production, length and shape of teats and arrangement of duct system in the mammary glands. Development of udder may be related to milk production and the knowledge of changes in its structure in relation to different physiological stages may also have practical implication.

Transducer Selection and Preparation of Scanning

Preparation of the site to be imaged will enhance the quality of the image. Therefore, any loose hair and dirt must be clean off. Ultrasound gel is applied to the area of interest. The gel acts as a coupling agent to prevent air from trapping between the transducer and skin. A 7.5 MHz transducer is ideal for imaging the teats. A 5.0 MHz transducer provides an adequate image. The mammary gland should be scanned with a 5.0-7.5 MHz transducer to give adequate penetration. All structures should be scanned in cross section and longitudinal planes.

Ultrasonography of the GI tract presents problems and challenges for the sonographer. Sonography of the GI viscera was once throught to be impossible because of artifacts created by gas within the lumen but with the technical advancement in the ultrasonography now the problem has been solved. If the animal is kept of feed and adlib water is given to the dog with I/v fluid than ultrasonography becomes helpful in the diagnosis of gastrointestinal tract disorders. Other conditions such as esophageal carcinomas can also been diagnosed by ultrasonographic endoscopy. in human beings.

The normal ultrasonography of the liver, kidney, stomach & spleen in dogs has been standardized and its use in evaluation of pathological lesions has been reported but ultrasonographic evaluation of oesophagus & intestine, both in normal animals and diseased conditions is yet to be established. Therefore normal ultrasonography of the oesophagus & small intestine in dogs and the importance of diagnostic capability of ultrasonography in diagnosis of pathology of these organs have been compiled.

Veterinary ultrasonographer has to write report of ultrasonography in different animals. The proper ultrasound report writing is the moral duty of the vet ultrasonographer. The accuracy of diagnosis must be ensured. The poor resolution/quality of machine may lead to erroneous diagnosis. Therefore, veterinarian must ensure good quality of machine and proper diagnosis. The report might be different in different animals e.g. report writing about uterus will be different in bitch, cows, buffaloes, camel, horse, goat and sheep. However following might be guidelines in writing ultrasound report of uterus. fetus, endometrium

Uterus: Position of uterus, contents in the uterus, shape and size in initial pregnancy and infections, appearance of myometrium, thickening of uterine layers, presence or absence of fluied/pus/masses, left and right horns and their contents. Observations on the images of uterine fluid and its echoicity, membrane appearance in pregnant animals. Special attentions should be paid to endometrium.

Endometrium: Appearance and thickness; any growth on the surface of endometrium. Images of retained portion of placenta can be ascribed in the cases of retained placenta.

Ovary: Ovaries are scanned to assess cyclic structures, size, shape, its Position/ location and internal echo pattern of follicles. This echo pattern will indicate whether follicle is normal, cystic or with any other abnormalities of follclular f luid. Ultrasound reports also include shape and size of corpus luteum. In cows and buffaloes, presence of cavity, looseness/compactness of luteal cells are also mentioned.

1.1. Background

Once this beautiful planet conceived human civilization with the glory of motherhood, the birds kept on twittering in an ecstasy of joy and freedom; the ripples of pristine rivers, blue and giggling, offered shelter to silvery fishes and pink Amazon Lilies! But human greed has defeated its own needs. So, what had been a means to survive now has turned into tools to triumph, rather, a weapon to destroy her own creation. By this time, we have transformed fertile lands into a barren Arizona, deep forests into a nasty slums and blue rivers into a filthy stream, called Yamuna.

The advent of the Anthropocene, implies that an unprecedented era of human impact on the natural environment, is now so large that the Earth has entered a new geological epoch; it is leaving the Holocene, the environment within which human societies themselves have developed (Gornish and dos Santos, 2016; Reynolds, 2021). Climate change is a prominent sign of human- driven changes to the global environment. There is every reason to be alarmed about anthropogenic climate change, pollution, and biodiversity loss, all of which have been accelerating in recent decades and do pose “existential crisis” (Díaz et al., 2020; Abhilash et al., 2021). Sixth Assessment Report of Intergovernmental Panel on Climate Change (IPCC) released on February 28, 2022, paints a troubling picture as limiting global warming to 1.5oC (a global target in the Paris Climate Agreement) is not safe for all. If warming exceeds 1.5oC, even temporarily, much more severe, often irreversible effects of climate change will occur, land and ocean temperature change, sea level rise and ocean acidification, loss of Arctic Sea ice and ice sheets, stronger storms, longer heatwaves and droughts, abrupt precipitation mainly intensity and seasonal distribution, thawing permafrost and more (IPCC, 2013). On the basis of the Sixth Assessment UN Secretary-General António Guterres said “The alarm bells are deafening, and the evidence is irrefutable: greenhouse gas emissions from fossil fuel burning and deforestation are choking our planet and putting billions of people at immediate risk.” According to the United Nations (2015), there are still 836 million people in the world living in extreme poverty (less than USD,1.25/ day). And according to the International Fund for Agricultural Development (IFAD), at least 70% of the very poor live in rural areas, most of them depending partly or completely on agriculture for their livelihoods. It is estimated that 500 million smallholder farms in the developing world are supporting almost 2 billion people, and in Asia and sub-Saharan Africa these small farms produce about 80 percent of the food consumed (IFAD, 2011). The rural poor often depend partly on forests for their livelihoods (World Bank, 2002). It is estimated that between 660 and 820 million people (workers and their families) depend totally or partly on fisheries, aquaculture and related industries as a source of income and support (HLPE, 2014).

This chapter is an extensive survey of all past studies relevant to the field of investigation which gives a knowledge of what others have found out in the related f ield of study. In any scientific investigation or research a comprehensive presentation of review of literature is a statutory requirement. Its main functions are to develop a better understanding of the problem to be investigated, delineate a new area of study and avoid unnecessary duplication, decide on the tools and techniques to be adopted including developing some new ones, also to relate the present study with the previous ones by finding out the areas of agreement and disagreement.

The review of literature of the present study is based on the major concepts related to the f ield of investigation. As direct references on all the item are not in abundance, certain specific references along with some indirect references have been incorporated in this chapter for the purpose of meaningful use.

Review of literature has been organized with a view to provide hard evidences as to clinically justify the reasons, logic, and contemplation leading to heuristically infer the different echelons of resilience issues.This is also catered to isolate the apparently less attempted genre of resilience study and analysis. Climate change, uncertainty, decline of soil organic carbon, fatigued genes on land, loss of biodiversity and fragile ecology of society have only been some of myriad of factors causing the loss of resilience, from ecology and from society as well.

3.1 Conceptual Framework

Aconceptual framework is an analytical tool that is used to get a comprehensive understanding of the study. It embodies the specific direction by which the research will have to be undertaken. It is generally constructed to provide the researcher the element ofattainable and researchable problems and ideas supported by methodology, design, prospective analysis and empirical conclusion. The conceptual framework is often called as the research paradigm.

The subject matter of the present research is Resilience and productivity of agriculture in different social-ecology: the farmers’ perception, status and interpretation. It is expected that the terminologies and concepts used to frame up the topic need to undergo brief explanation for the better understanding of its meaning.

Resilience: Resilience is about anticipating, planning and reducing disaster risk to effectively protect persons, communities and countries, their livelihoods, health, cultural heritage, socio-economic assets and ecosystems. The ideas of ‘bounce back’, ‘spring forward’ and ‘build back better’ are often used in the context of resilience.

Productivity: Productivity is commonly defined as a ratio between the output volume and the volume of inputs. It measures how efficiently production inputs, are being used in an economy to produce a given level of output.

Agriculture: The word agriculture derives from the Latin ager (field) and colo (cultivate) signifying, when combined, the Latin agricultura: field or land tillage. But the word has come to subsume a very wide spectrum of activities that are integral to agriculture and have their own descriptive terms, such as cultivation, domestication, horticulture, arboriculture, and vegeculture, as well as forms of livestock management such as mixed crop-livestock farming, pastoralism, and transhumance. The Oxford English Dictionary (1971) defines agriculture as “The science and art of cultivating the soil, including the allied pursuits of gathering in the crops and rearing livestock; tillage, husbandry, farming.”

In any social science research, it is hardly possible to conceptualize and perceive the data and interpret the data more accurately until and unless a clear understanding of the characteristics in the area and attitude or the behavior of people is at commend of the interpreter who intends to unveil an understanding of the implication and behavioral complexes of the individual who live in the area under reference and form a representative part of the larger community. The socio-demographic background of the local people in a rural setting has been critically administered in this section. A research setting is a surrounding in which input and elements of research are contextually imbibed, interactive and mutually contributive to the system performance. Research setting is immensely important in the sense because it is characterizing and influencing the interplays of different factors and components. Besides the investigators must also have the basic knowledge about the socio demographic background of the people so as to have an easy understanding of their knowledge, attitude and behavior.

Research setting refers to the detail information of an area where the study has been conducted. The study area, generally comprises of a particular geographical area viz. a state, district, block, or gram panchayat area selected according to the convenience of the investigator who possess adequate knowledge regarding the location, communication facility etc. of the locality so that he/she can easily approach each and every corner of the area for data collection. Here. in this study the data collection was done mostly over telephone based on the interview schedule due to Covid-19 pandemic situation.

5.1 Locale of Research

Based on the All-India assessment report regarding Climate Vulnerability Assessment for Adaptation Planning in India Using a Common Framework which identifies the most vulnerable states and districts in India with respect to current climate risk and the main drivers of vulnerability, the present study has been conducted in two relatively highly vulnerable states of India namely West Bengal (Vulnerability Indices:0.592) and Jharkhand (Vulnerability Indices: 0.674). It specifically comes under Agro-climatic zone III (Lower Gangetic plain region) and Agro-climatic zone VII (Eastern plateau and hilly region) respectively.

On the basis of Vulnerability Indices (Vis) different district of West Bengal classified into three categories i.e. relatively high vulnerability (0.59-0.69), moderate vulnerability (0.49 -0.59), and relatively low vulnerability (0.38- 0.49). Two districts, Malda (VIs:0.690) and Jalpaiguri (VIs:0.627) from highly vulnerable and three district Murshidabad (VIs:0.524), Dakshin Dinajpur (VIs:0.523) and Burdwan (VIs:0.497) from moderate vulnerable category were selected purposively for the present study. For satisfying the purposes three agroclimatic zones of the West Bengal, viz. Terai Zone (Jalpaigudi), Old Alluvial Zone (Murshidabad and Dakshin Dinajpur) and New Alluvial Zone (Burdwan) districts were taken into account for the assessment. Twenty respondents of two Villages from each Block i.e., Alipurduar-I of Jalpaigudi, Hilli and Gangarampur of Dakshin Dinajpur, Old Malda of Murshidabad and Barabani of East Burdwan were purposively picked for the research study.

6.1. Data Interpretation and Visualization of West Bengal

Any kind of production management system or decision-making process is being organised in social ecology. No variable cannot behave discrete or free without having any kind of influence as well as impact from the vary operating ecosystem. That is how it is imperative to know and visualize the basic features in terms of its distributive characters. The distribution of features in variables through this networking and interactions ultimately contribute to a holistic visualization of social ecologization under study.

Table 6.1.1 represents the distribution of variables in terms of range i.e. maximum and minimum values, mean, standard deviation and coefficient of variation for Terai Zone, Old Alluvial Zone and New Alluvial Zone of West Bengal.

The average age (x1) of the respondent stands at 49.02. It denotes that so far as responsibility of agriculture and age base livelihood runs at the population so far as the respondent under study is peaks are at the hands of farmers approaching or passing through old ages. On the contrary the absence of young population or withdrawal of young age farmers from agriculture have got a serious implecation near and far. The cv value runs at 25.78 per cent to indicate that the distribution of variable is highly consistant.

The average of functional education (x2) of the respondent stands at 8.20.The variable education charecterization the social ecology speaks that the most of the respondents are having mid level school education.So, this has got spil over effect on the function and operation of other variables i.e. precisely the perception variables.The cv value stands at 43.69 per cent that’s good enough to infer that the distribution of the variable is highly consistent.

7.1 Summary

Never ever in the annals of human civilization, the importance of ecological resilience has become so important and imperative as we are perceiving now. Both the need and greed of food economics have driven the resource bases of our ecosystem, to a dilapidated and fragile status. By 2050 the world’s population will touch close to 9.5 billion and we have to scale up our food production 60% more then what it is right now. In India by 2040, we have to cross 450 million tons of our targeted food production to keep rhythm with population growth. By 2035 we are going to cross the population of China. Understanding the cascade of risks for climate change, as well as the vulnerabilities to these risks, is key to frame ways to adapt. Reducing vulnerabilities is key to reducing the net impacts on food security and nutrition and also to reducing long-term effects. Increasing resilience of food security in the face of climate change calls for multiple interventions, from social protection to agricultural practices and risk management..

When population pressure is soaring up, the need to produce more food from less and less available land and water, the issues of ecological resilience are coming up more swashbuckling and humongous. The aftermath of green revolution has contributed to achievement in food security on one hand, the other hand water has been contaminated and depleted, soil has been eroded with a sharp decline of organic carbon. We are losing 15 tons of topsoil per hectare per year and inviting a disruptive agro-ecosystem, the syndrome of which are quite vivid and prominent.

There is no terminal of any kind of research, rather they presence a static snap of the gamut of ecological dynamics and functions.

The following scopes for future research

• To construct modelling on resilience, beyond agriculture like livestock f ishery, forestry.

• To create new Algorithm of prediction in ecological behaviour and dynamics

• Gender and economic factors in resilience study and analysis

• Ecological resilience in different agro climatic zones covering coastal ecosystem, Himalayan ecosystem red lateritic ecosystem etc

• Policy research in ensuring and intriguing ecological resilience as well as social resilience on the common platform of production behaviour

• Importance of ecological resilience in the perspective of climate change and global warming

Introduction

Azoles, a class of organic compounds containing a five-membered nitrogen containing ring, have garnered significant attention in various fields, including agriculture, medicine, and industry. These compounds are renowned for their diverse applications, particularly as anti fungal agents in both human and veterinary medicine, as well as in agriculture for crop protection. Whatever it may be, alongside their efficacy, concerns have arisen regarding their potential toxicity and environmental impact.

The Role of Azoles

Azoles play a crucial role in combating fungal infections in humans and animals. They inhibit the synthesis of ergosterol, a vital component of fungal cell membranes, thereby disrupting fungal growth and proliferation. Additionally, azoles are used in agriculture to protect crops from fungal diseases, contributing to higher yields and improved food security.

Toxicological Concerns

While azoles have proven effective in controlling fungal infections, their use raises concerns due to potential adverse effects on human health and the environment. The toxicity of azoles stems from several factors, including their mode of action, chemical properties, and metabolic pathways.

Introduction

Phenothiazines are a class of drugs primarily used to treat psychiatric disorders such as schizophrenia, bipolar disorder, and severe anxiety. While they can be effective in managing these conditions, they also come with potential risks and toxic effects when not used properly. Understanding the toxicity of phenothiazines is essential for healthcare providers and patients alike to ensure safe usage and minimize adverse effects.

Mechanism of Action

Phenothiazines exert their therapeutic effects by blocking dopamine receptors in the brain, thereby altering neurotransmitter activity and reducing symptoms of psychosis. Additionally, they also block other receptors such as histamine and alpha-adrenergic receptors, contributing to their sedative and antiemetic properties.

Types of Phenothiazines

There arevarious phenothiazine derivatives available, including chlorpro mazine, fluphenazine, thioridazine, and promethazine, among others. Each may have slightly different pharmacological properties and side effect profiles, but they share common characteristics regarding toxicity.

Toxic Effects

Extra Pyramidal Symptoms (EPS)

One of the most well-known toxic effects of phenothiazines is the development of extrapyramidal symptoms, which include akathisia, parkinsonism, and tardive dyskinesia. These symptoms can range from mild discomfort to severe motor disturbances and can be particularly problematic with long-term use.

Understanding the Toxicity of Macrolide Endectocides

Introduction

Macrolide endectocides are a class of compounds widely used in veterinary medicine to combat internal and external parasites in livestock and companion animals. While these medications have proven to be effective in controlling parasites, there are concerns regarding their potential toxicity and adverse effects on animals and the environment.

Whar are Macrolide Endectocides

Macrolide endectocides belong to a group of compounds derived from naturally occurring macrolide antibiotics, such as avermectins and milbemycins. These compounds have broad-spectrum activity against various parasites, including nematodes, arthropods, and ectoparasites like ticks and mites. Some commonly used macrolide endectocides include ivermectin, doramectin, moxidectin, and eprinomectin.

Toxicity Concerns

While macrolide endectocides are generally safe and effective when used according to label instructions, there are instances where toxicity can occur. Factors influencing toxicity include:

Aluminium is a ubiquitous metal and seen in an environment. Source of aluminium happens through dietary souce, food addivitives, packing materials, medications, environmental exposure as well as occupational exposure. Toxico kinetics is related to the interaction of aluminium with biological systems and toxicity also. Toxico dynamics of aluminium is related to the the oxidatve stress, neuro toxicity and bone toxicity. Diagnosis is based on MRI scan and measurement of serum as well as urine. Treatment is dependent on chelation therapy as well as avoidance of exposure. Finally it is concluded that aluminium toxicity leads to health risks in a significant manner along with potential adverse effects on neurological, gastro, intestinal, renal as well as skeletal systems.

Introduction

Aluminium is a ubiquitous metal observed naturally in the environment. It is widely used in various industrial and consumer products including cookware antacids, vaccines, and food additives. While aluminium is normally considered safe in low concentrations and exposure to high levels can lead to toxicity causing a range of adverse effects on human health. In this comprehensive article, authors will provide information regarding its toxicokinetics and toxicodynamics, clinical signs and symptoms, associated lesions, diagnosis and treatment strategies.

Arsenic is a naturally occurring element that can be observed in various forms in the environment, including soil, water, and air. While arsenic has some industrial applications, it is also notorious for its toxicity to humans. Exposure to arsenic can happen through ingestion, inhalation, or skin contact, with ingestion being the most common route of exposure in cases of poisoning. Here, authors provide information regarding the source of arsenic intoxication, its toxicology kinetics and dynamics, clinical signs and symptoms, lesions, diagnosis, and treatment.

Introduction

In this article, authors provide information regarding source of intoxication also.

Source of Intoxication

Arsenic poisoning can lead to various sources, including:

Contaminated Water

Arsenic contamination of drinking water is a significant concern in many parts of the world, specifically in regions where natural geological formations consists of high levels of arsenic.

Cadmium, a roxic heavy metal, poses risk in a significant manner especially to human health and the environment. It's wide spread industrial use and presence in various products make exposure a concern particularly for both environmental and occupational settings. Understanding the source, toxico dynamics, toxico kinetics, clinical manifestations, diagnosis as well as treatment of cadmium poisoning is critical in mitigating it's adverse effects especially on human health. Cadmium gains an entry into the environment through natural processes namely volcanic activity as well as weathering of rocks. Whatever it may be, human activities along with mining, smelting, refining of metals and manufacturing of batteries, plastics as well as pigments, are major contributors to cadmium release especially into the environment. Additionally, cadmium is seen in tobacco smoke, resulting in exposure among smokers as well as passive smokers. Once released into the environment, cadmium gains entry into the human body through many routes such as inhalation, ingestion and dermal contact An inhalation of cadmium containing dust or fumes is a prominent route of exposure in an occupational settings especially in industries namely mining, smelting as well as welding. The consumption of contaminated water and food is another general route of exposure especially for the general population. After consumption, cadmium in essential manner accumulates especially in the kidneys as well as liver with a half life of approximately 10 - 30 years in the organs. It also accumulates particularly in bones, where it consists of half life of several decades.

Copper is an important mineral needed fir many physiological activities especially in the human body along with the formation of red blood cells, maintenance of nerve cells and support of the immune system. Whatever it may be, like various substances copper also exhibits toxicity if present in an excessive amounts. Thus article provides an information regarding the intricacies of copper toxicity, exploring it's sources, toxico dynamics, toxico kinetics. Clinical conditions, diagnosis as well as treatment. Copper intoxication can happen through many sources such as environmental as well as occupational. Common sources are contaminated water, dietary sources, occupational exposure as well as medications. Particularly after an ingestion, an absorption of copper takes place essentially in the stomach as well as smart intestine. Now the transportation of copper happens in the blood stream, mostly in bound to ceruloplasmin, a copper _ carrying protein. An elimination of copper occurs primarily through bile secretion into the feces along with a smaller part excreted especially vin Urine. Whatever it may be, in cases of overload, an accumulation of copper takes place in tissues namely the brain, liver and kidneys, resulting in toxicity. Copper toxicity results in the formation of reactive oxygen species ( ROS ), which cause oxidative damage to cellular to cellular structures namely lipids, proteins as well as DNA. Clinical signs and symptoms include gastro intestinal portion, neurological conditions, hepatic abnormalities, hemolytic anemia as well as renal impairment. Lesions of copper toxicity are hepatic lesions, hepatic cellular necrosis, inflammation as well as fibrosis, copper accumulation, biliary changes, neurological lesions, neuronal degeneration, gliosis, de myelination, renal lesions, tubular damage, interstitial inflammation as well as vascular changes

An auricle (pinna) and ear canal (external auditory meatus) of external ear play an important rolein the process of hearing. The main function if external ear is to collect vsound waves and divert them towards the middle and inner ear. The external ear I'd prone to different conditions along with inflammation, infections and other disorders. Common conditions of the external ear include otitis external, Carmen impaction. Contact dermatitis, external otitis media. Antibiotics, antifungal, corticosteroids, ear wax softener, analgesics are useful in treating the disordersof external ear. Finally it is concluded that the function of drugs on the external ear is related to a variety of therapeutic approaches aimed atvalleviating symptoms, resolving infections and increasing healing.

Introduction

The external ear, comprising the auricle (pinna) and the ear canal (external auditory meatus), plays a vital role in the process of hearing. While its primary function is to gather sound waves and direct them towards the middle and inner ear, the external ear is also susceptible to various conditions, including infections, inflammations, and other disorders. In such cases, medications are often employed to alleviate symptoms and treat underlying issues. Understanding how drugs interact with the external ear can shed light on their therapeutic mechanisms and potential side effects.

Mercury, a heavy metal, is present vi. Various forms and is well known for its toxic effects especially on human health. Mercury occurs naturally vin the environment through volcanic eruptions, weathering of rocks and forest fires. It can be observed in soil, water and the atmosphere. Human activities such as mining, industrial processes (eg. Coal Combustion, chor alkali production) and improper disposal of mercury containing products contribute to environmental contamination. Mercury can be absorbed through inhalation ingestion or skin contact. Once absorbed, mercury distributes throughout the body, crossing g the blood brain barrier and placenta. Inorganic mercury is partly metabolized to organic forms, such as methyl mercury, by micro organisms in environment. Mercury is excreted via Urine and feces. Mercury disrupts neuronal function by interfering with neurotransmitter signalling pathways, cognitive function, motor coordination and sensory perception Mercury accumulates in the kidneys, causing tubular necrosis. Proteinuria and renal failure. Clinical signs and symptoms are tremors memory loss, nausea, vomiting, hypertension and chest pain. Diagnosis is based on medical history, physical examination, blood, Urine, hair tests and neuro imaging techniques namely MRI or CT scans. Treatment is based on chelation therapy. Finally it is concluded that understanding the sources, toxico kinetics, toxico dynamics clinical manifestations and treatment options is critical for effective management and prevention of mercury toxicity.

History of Chemical Control, Insecticide Toxicology and Properties

History of pest control probably started when the first person swatted a mosquito or pulled off a tick, the battle for the control of our planet didn’t start until organized agriculture, when pests attacked the plants, and we grew to eat and threatened our very survival.

A pesticide is any substance or mixture of substances used to stop, kill, avoid, or lessen the effects of a pest (insects, mites, nematodes, weeds, rats, etc.). This includes insecticide, herbicide, fungicide, and many other substances used to control pests. Pesticide was defined in different ways at different times and in different places. But pesticide is still generally the same: it is a (mixed) substance that is poisonous and effective on target organisms but safe for non-target organisms and environments.

Chemical control, commonly known as pest control, is the use of chemicals to reduce insect populations. Herbicides, fungicides, insecticides, rodenticides, acaricides, nematodes, and fungicides are all examples of pesticides. Insecticides are a class of chemicals used to combat insect pests. A substance or combination of compounds used to kill, repel, or otherwise prevent insects is called an insecticide. When it comes to controlling pests, insecticides are most powerful tools available for management. They have a wide range of positive effects, including high efficiency, speed of healing, general applicability, adaptability to different settings, adaptability to shifting agronomic and ecological conditions, and low cost. When insect pest numbers approach or surpass the economic threshold, insecticides are the sole viable instrument for emergency action in pest management. The usage of pesticides, a widely used method, can be central to such a system. The use of chemical pesticides will remain pivotal in these initiatives. In many cases, chemical control of pests is the best option available. Some people’s view of pesticide use for pest management as an ecological sin is incorrect. Chemical pesticides are a reliable and useful tool for the biologist, so long as they are used in accordance with good ecological principles.

A bioassay, also known as a biological assay, is a scientific experiment used to quantify the impact of a substance on a living organism. According to Finney (1952), bioassay is defined as measurement of potency of any stimulus (physical, chemical, biological, physiological) by means of reactions which it produces in living matter. It is an essential procedure in insecticide development and the assessment of environmental pollutants, as well as the evaluation of the effects of interventions viz. pesticides and herbicides on the environment. In the field of biostatistics, a bioassay refers to a set of techniques used to determine the quantity or intensity of an agent or stimulus based on the response of the subject. Typically, many methods are employed to assess the strength or effectiveness of an insecticide by examining its impact on living organisms.

An insecticide is a pesticide used to kill or eliminate insect pests in agriculture, households, and industries. Judicious use of insecticides may be a factor in the increase of agricultural productivity, but by their nature of having high toxicity to non target organisms and capability to develop resistance through widespread use, most insecticides have high potential to significantly affect and alter ecosystems. Many are toxic to humans and animals (both domestic and wildlife), and can accumulate as concentrates in the food chain and water resources, giving rise to serious environmental contamination and pollution.

Formulation is a word that can be used in a lot of different ways, but at its core, it means putting things together in the right way, usually by following a formula. Insecticides come in different forms, which are called formulations. A formulation is just the way a product is used. The chemical or biological makeup of a pesticide and its active ingredient (also called the active substance) determine how it works on living things. Most of the time, the active ingredient is mixed with other things, and the product as it is sold will need to be weakened even more before it can be used. Formulation makes a drug easier to handle, store, and use. It can also have a big effect on how well it works and how safe it is.

Insecticides come in many different forms because the active ingredients vary in how easily they dissolve, how well they kill pests, and how easy they are to handle and move. The pesticide is made up of both active and non-active (used to be called “inert”) chemicals. The manufacturer will need to know the identity of the pest, as well as details about its feeding behavior, reproduction, and life cycle, in order to create an effective formulation. Manufacturers also take into account factors including surface and equipment type, runoff and drift rates, pest habits, and safety when formulating insecticides. Inactive materials (adjuvants/ additives) are often added to insecticides to make them stick to the application surface or spread out over leaves. There are solvents (liquids) that dissolve the active ingredient, carriers (liquids or solids) that aid in the delivery of the active ingredient, etc.. Boosting the efficacy of active ingredients requires additives, such as spreaders, stickers, wetting agents, compatibility agents, foaming agents, etc.

Introduction

Analysis of insecticide formulations are critical for the availability of quality insecticides in the market for ultimate benefit of farmers and ecosystem health. This chapter highlights the significance of comprehensive insecticide formulation analysis protocols, encompassing methods for determining active ingredient and assessing physical and chemical parameters. Employing advanced analytical techniques such as spectroscopy and chromatography for insecticide formulation analysis will eventually maintain the quality of insecticides for the sustainable management of pests.

In India, over 339 pesticides are registered that includes insecticides, fungicides, herbicides (DPPQS, 2024). The current market of non-genuine insecticide is INR 3,200 crores (USD 525 Million) which constitutes 25 per cent by value and 30 per cent by volume of the total domestic market of agrochemicals in India as per Industry reports, primary interviews, news articles and Tata Strategic analysis (FICCI, 2015). Monitoring registration and regulation of insecticides is governed by the Insecticide Management Bill 2020, which replaced the Insecticide Act 1968 (DPPQS, 2023). The Insecticide Act of 1968 established the Central Insecticide Laboratory, Faridabad, under section 16 with two regional insecticide testing laboratories at Chandigarh and Kanpur (DPPQS, 2023). Current Quality Control of Insecticides in States/UTs during the last five years shows that 68078 insecticide samples were analysed (DPPQS, 2023). In the beginning, these laboratories involved in analysing insecticide samples drawn by any officer or the body authorized by the Central or State Governments and submit certificates of analysis to the concerned authority. Regional Pesticide Testing Laboratories (RPTLs) had a huge target of analysis of 1550 samples per annum that necessitated the establishment of 71 State Pesticide Testing Laboratories (SPTL) spread across India of which 14 are NABL accredited (DPPQS, 2023).

Insecticide classification majorly divided into three categories. A. based on chemical group, B. mode of entry in the insect, C. based on toxicity.

A. Classification of Insecticides based on chemical group

Historians have traced the use of pesticides to the time of Homer around 1000 B.C. earliest records of insecticide use pertain to the burning of “brimstone” (Sulfur) as a fumigant. Pliny the Elder (A.D. 23-79) recorded most of the earlier insecticide uses in his Natural History and included among these was the use of gall from a green lizard to protect apples from worms and rot. Later, a variety of materials used viz., extracts of pepper and tobacco, soapy water, whitewash, vinegar, turpentine, fish oil, brine, lye and many others. At the beginning of World War II (1940), insecticide selection was limited to several inorganic compounds, arsenicals, petroleum oils, nicotine, pyrethrum, rotenone, sulfur, hydrogen cyanide gas, and cryolite. It was during World War II that opened the Chemical Era with the introduction of a totally new concept of insect control.

The way a chemical moves, persists, and behaves in its surroundings is known as its behaviour. A chemical’s behaviour will dictate both its residual properties and field efficacy. The behaviour of insecticides is determined by their chemical and physical characteristics as well as the interaction of environmental elements. Our capacity to comprehend and forecast how insecticides will behave in the environment will determine our ability to keep utilizing insecticides.

Important features of systemic insecticides

1. They are not susceptible to wash off by rain

2. By virtue of their movement inside plants, they can afford to protection to regions where they have not been sprayed

3. They are often been transported towards region of growth

4. Since they have very weak contact action, safe to beneficial organism.

Pesticide use in agriculture has evolved at several stages in the last few decades. Pesticides, as defined by the FAO, are any substance or mixture of substances intended to prevent, destroy, or control any pest, including vectors of human or animal disease, unwanted species of plants or animals causing harm during or otherwise interfering with the production, processing, storage, transport, or marketing of food, agricultural commodities, wood and wood products, or animal feedstuffs, or substances that may be administered to animals. A plant growth regulator, defoliant, desiccant, or agent used to thin or prevent premature fruit fall, as well as substances applied to crops before or after harvest to prevent them from deteriorating during storage and transportation, are included in this category.

Today’s agrochemistry has a massive challenge: ensuring the availability of high quality active ingredients to enable long-term control of pest species, weeds, and agricultural diseases. The differential uptake and transfer of the active ingredient by target and non-target organisms can contribute to diverse biological activity.

Insecticide mode of action is divided in to four major chapters 1. Nerve & Muscle 2. Growth & development 3. Respiration & Energy production 4. Metabolic process 5. Unknown or Non-Specific (multisite inhibitors) (Source: IRAC). To understand the mode of action of insecticides, it is necessary to understand the function of nervous system and how it works in insect. The nervous system functions transmits information throughout the body. This system has three components: 1) Peripheral nervous system (PNS) to receive and transmit incoming signals (taste, smell, sight, sound, and touch) and to transmit outgoing signals to the muscles and other organs, effectively communicating them how to respond, and 2) Central nervous system (CNS) to interpret the signals and coordinate the body’s responses and movements. 3) Visceral or sympathetic nervous system (VNS) directly connected with the brain that supplies nerves to the anterior part of the alimentary canal (foregut and midgut), heart, and spiracles. Some additional nerves arise from posterior compound ganglion of ventral nerve cord (VNC) which supply nerves to the posterior part of gut and reproductive system.

Synergists are chemicals that significantly increase the toxicity of an insecticide while being nearly non-toxic on their own. Thus, non-toxic chemicals that contribute to the increased toxicity of insecticides are referred to as synergists. Many chemical substances have the potential to synergize with poisons. Some enzyme inhibitors work well synergistically by inhibiting enzymes that metabolize pesticides, particularly in insecticide-resistant strains. When mixed with other insecticides, some insecticides increase the toxicity of the latter at non-toxic dosages. When a mixture is more harmful than expected based on the sum of its separate efficacies when administered alone, the interaction between substances is known as synergy. Antagonistic interactions among components reduce a mixture’s efficacy.

Synergism can also develop between two or more poisons. Several statistical methods have been proposed to quantify the synergy of both non-toxic and hazardous substances. Toxin interactions are assessed using bioassays, which involve mixing toxicants (two or more) in a specific ratio. The combination is then used to prepare serial dilutions. Alternatively, the poisons can be supplied sequentially in the same amounts as in the mixture. Bioassays are also used to determine the dose-mortality response of each toxin on the same insect strain. The data are subjected to probit analysis, and the toxin interactions can be evaluated using the statistical methods listed below.

Insecticide resistance is a growing concern for those who need insecticides for medical, veterinary, and agricultural control of insect pests. In response to the introduction of DDT resistance in 1947, the incidence of resistance has increased annually by an alarming amount. Resistance is “the inherited ability of a strain of some organism to survive doses of a toxicant that would kill the majority of individuals in a normal population of the same species” (WHO, 1957).

As a result of continued insecticide application, the proportion of resistant insects increases compared to that of susceptible and the population becomes increasingly difficult to control

Above photograph theoretical example illustrating the increase of insecticide resistance levels in a pest population. Some individuals (black) with genetic traits allowing them to survive insecticide applications can reproduce; if the selection pressure is frequent, they easily become the preponderant part of the population (Fig. 1).

An adaptation to a pesticide leads to reduced susceptibility to it among the pest population targeted by that pesticide. In nature, pests develop resistance to chemicals through natural selection. In the most resistant organisms, their genetic traits are passed on to their descendants. Since 1945, at least 500 species of pests have developed resistance to pesticides (Anonymous, 2007), but other sources estimate as many as 1000 species (Miller, 2004).

Farmers still rely heavily on insecticides because of their efficiency, portability, and speedy returns on investment. Although synthetic organic insecticides are highly efficient, their widespread usage has led to toxicity to natural enemies, toxic residues in plants and the environment, insect resistance, and a resurgence in insect populations. Ripper (1956) first time recognized the problem of resurgence in plant protection.

Metcalf (1986) distinguished between two types of resurgence: primary insect resurgence, in which populations of target insects that had been suppressed by insecticide application quickly recover to excessive levels (Fig. 1.A), and secondary insect outbreak, in which non-target species develop into serious insect s after insecticide application (Fig. 1.B).

Primary insect resurgence

Primary insect resurgence occurs when the target insect population increases to at least as high (Hajek, 2004) or higher (Hardin et al., 1995) than in an untreated control or higher than before the treatment (Pedigo and Rice, 2006).

Secondary insect resurgence/ secondary insect outbreak (Type II resurgence)

The phenomenon known as replacement of a primary insect with a secondary insect, or secondary insect outbreak, occurs when the population of a non-target insect, which is harmful to the crop, experiences a surge following the application of a insecticide aimed at controlling the population of the primary insect. A second insect outbreak is also called resurgence. A secondary insect outbreak is the rise of a non-target species after an insecticide has been used.

The role of toxicology in the evaluation of new agrochemicals

The widespread use of agrochemicals for crop protection may expose humans, animals, and the environment to toxic chemicals. Humans may be exposed during manufacture or application, and to a lesser extent as consumers of food products containing trace amounts of residues.

Strategies of toxicity testing

No-Observable-Adverse- Effect-Level (NOAEL)

A level in which the total diet that causes no adverse effect in treated animals when compared to untreated animals maintained under identical conditions. This NOAEL is expressed on a mg/kg of body weight/day basis. Chronic and sub chronic studies are need to be carried out in different species to determine NOAEL values.

It depends on how much of the substance an organism is exposed to, but all chemicals are toxic to some degree. Toxicology studies try to figure out the exact types and amounts of harmful effects, as well as the lowest doses that won’t have any negative effects (called the “No Observed Adverse Effect Level” or NOAEL). Most data come from studies with lab animals and cells that have been grown in a lab. Using these numbers and extrapolation or uncertainty factors, it is possible to figure out an Acceptable Daily Intake (ADI). This is the maximum amount of a substance that a person can take in every day without putting themselves at a very high risk of getting sick. These numbers will be compared to how people might be exposed to a compound in the environment, including through food. This will show if the use of an agrochemical is potentially allowed.

i) Silicon Technology

Silicon technology in agriculture refers to the use of silicon-based compounds, primarily silicon dioxide (SiO2 ), in pesticide formulations and as part of integrated pest management (IPM) strategies. Silicon technology is not a pesticide itself but is used to enhance the effectiveness of pesticides and contribute to sustainable pest management. Here are some ways silicon technology is applied in pesticide use:

1. Silicon-Based Adjuvants: Silicon-based adjuvants are added to pesticide formulations to improve their efficacy. These adjuvants can enhance the spreading, wetting, and sticking properties of pesticides, ensuring better coverage of plant surfaces and improving the retention of the active ingredient. This leads to more effective pest control and reduces the need for higher pesticide concentrations.

2. Induced Resistance: Silicon has been shown to induce plant resistance against pests. When plants take up silicon from the soil and deposit it in their cell walls, it can create physical barriers that make it more difficult for pests to penetrate plant tissues. Additionally, silicon can trigger the production of defensive compounds in plants, making them less susceptible to pest damage.

3. pH Buffering: Silicon compounds can act as pH buffers in pesticide formulations, helping to maintain the stability and efficacy of the active ingredients over a broader pH range. This can be particularly useful when mixing pesticides with other chemicals or using them in different environmental conditions.

Crops are grown with the use of plant protection chemicals to boost production, enhance quality, and lengthen shelf life. Wherein the enormous use of pesticides which are having the longer half life period led to leave the residues in the different bodies of the ecosystem. Pesticide residues refer to the residual presence of pesticide active ingredients, their metabolites, or breakdown products in various environmental components subsequent to their application, accidental release, or disposal.

Analysis of residues gives insight on the type and extent of chemical contamination in an area, as well as how long it has been there. Before governments will approve the use of pesticides, they require comprehensive testing of their efficacy, environmental impact, and toxicology. A possible risk to human health arises from the presence of chemical residues and/or breakdown products in agricultural goods. Selective sampling plans can be used to learn more about pesticide traces in the environment, how they move about, and how quickly they degrade.

Pesticide: The act defines “pesticide” as any substance or other substance or product that is used to stop, kill, repel, or control insects, rodents, fungi, weeds, and other plants and animals that humans don’t need.

Chemicals are commonly employed to manage plant diseases, pests, and weeds, but they are only effective if administered promptly once an infestation has been discovered. These chemicals must be sprayed, dusted, or misted over the ground and plants. Since the chemicals are expensive, it is important to have tools for applying them evenly and effectively. Crop Protection Products (CPP) like herbicides, pesticides, and fungicides work best when they are used at the right time during the crop’s most productive times. This problem is getting worse because there aren’t enough people to do the work. In this situation, the only choice that makes sense is to automate the application process. Most of the time, poisons are put on with dusters or sprayers. Dusting is the easier way to apply chemicals. It works best with movable equipment and usually only needs simple tools, but it is less effective than spraying because the dust doesn’t stick around as long. High volume spraying is usually efficient and reliable, but it is more expensive than low volume spraying, which fixes some of the problems with the first two methods while keeping the things that work well about them.

Since bees are indicator species, their abundance on earth serves as a barometer for environmental conditions and the health of ecosystems. With up to 60,000 honey bees living in a single hive, each with a distinct job, the life of a bee is undoubtedly one of nature’s greatest miracles. There is much to be learnt from the exquisitely smart, well-organized lives of bees. Around the world, honey bee hives have been experiencing severe decreases over the past ten years, and local pollinating species are also experiencing significant losses. A growing number of studies point to a particular class of pesticides as the principal cause of the worldwide pollinator disaster, and if our government agencies and certain legislators don’t act quickly, the pollinator situation will only get worse.

Rachel Carson written Silent Spring 50 years ago, she expressed her concerns about the use of systemic insecticides like neonicotinoids. We are currently seeing f irst-hand how her forecasts come true

“The world of systemic insecticides is a weird world, surpassing the imaginings of the brothers Grimm… It is a world where the enchanted forest of the fairy tales has become the poisonous forest in which an insect that chews a leaf or sucks the sap of a plant is doomed. It is a world where a flea bites a dog, and dies because the dog’s blood has been made poisonous, where an insect may die from vapors emanating from a plant it has never touched, where a bee may carry poisonous nectar back to its hive and presently produce poisonous honey (Rachel Caron, Silent Spring)”.

Insecticide use for agriculture has increased along with food quality and quantity, but self-harm has also increased. Despite a high rate of insecticide poisoning and sometimes usage for homicide, little is known about insecticide management.

Insecticide poisoning kills up to 300,000 people around the world every year. According to hospital admission data, most estimates of insecticide poisoning in the short term have been based on numbers of people poisoned by insecticide s. This represents only a small part of the real number, as it includes only the most dangerous cases. IS 4015 is a standard guide for handling cases of pesticide poisoning.

Insecticides possess toxicity towards both pest organisms and human beings. Nevertheless, the potential harm to humans and non-target animal species can be mitigated by implementing appropriate safety measures. The ingestion or prolonged dermal exposure to most insecticide s can result in deleterious effects, whether intentional or accidental. Inhalation of insecticide particles may occur during the spraying process, and there is an associated risk of contamination of drinking water, food, or soil. The issue of safety is consistently a concern when utilizing insecticide s. Exposure to insecticide concentrates or vapour drift has the potential to cause harm to applicators, bystanders, and the surrounding environment. It is imperative to exercise specific precautions when engaging in the activities of transportation, storage, and handling. Individuals who are engaged in the handling and application of insecticide s are required to possess knowledge and adhere to appropriate safety protocols in order to mitigate potential risks. The foundation of ensuring insecticide safety lies in the selection of an appropriate product. The preservation of safety is of utmost significance in the various stages of insecticide management, including storage, transportation, mixing, and loading. The safe execution of equipment cleanup and maintenance is imperative, as it necessitates the proper disposal of unwanted insecticide s and empty insecticide containers. Regular cleaning and maintenance of spray equipment is essential in order to mitigate the occurrence of leaks. Furthermore, individuals who are involved in insecticide application should undergo comprehensive training to ensure their adeptness in handling these substances safely.

The Cerebellum, a critical structure in the brain essential for coordination, balance and motor control. Can be influenced by many factors along with drugs. Adiadiochokinesia refers ro the impaired ability to perform rapid alternating movements namely rapidly pronation and supination the hands or tapping the feet. Dysfunction in Cerebellum can result in a range of motor impairment along with tremors, ataxia (lack of coordination) and dysmetria (inaccurate movements). A very few common classes of drugs associated with cerebellar dysfunction include alcohol, anti epileptic drugs, sedatives asxwell as benzodiazepines and opioid. Regarding treatment, physical therapy and rehabilitation techniques aimed at improving coordination and motor skills can be beneficial for individuals with cerebellar impairment. Finally it is concluded that drugs can exert profound effects on cerebellar function, leading to abnormalities such as adiadiochokinesia.

Introduction

The cerebellum, a critical structure in the brain essential for coordination, balance and motor control, can be influenced by various factors including drugs. One notable manifestation of cerebellar dysfunction is adiadochokinesia, a condition manifested by the inability to perform rapid alternating movements. Understanding how drugs impact cerebellar function and contribute to abnormalities like adiadochokinesia is essential for both medical professionals and the general public.

Introduction

The cerebellum, often referred to as the “little brain,” plays a crucial role in motor control, coordination, and speech. Dysarthria, a motor speech disorder manifested by difficulty in articulating words because of muscle weakness or incoordination, can be impacted by various factors along with drugs. Understanding the impact of drugs on cerebellar function and subsequent dysarthria is responsible for both medical professionals and individuals impacted by these conditions.

Cerebellar Abnormalities and Dysarthria

Cerebellar abnormalities can lead to a variety of causes including stroke, trauma, infections and neuro degenerative diseases. If the cerebellum is affected, it can lead to motor impairments namely ataxia (lack of coordination), tremors and dysarthria. Dysarthria particularly refers to difficulties in controlling the muscles used for speech, leading to slurred or unintelligible speech patterns.

Influence of Drugs on Cerebellar Function

Several drugs can influence cerebellar function either in a direct manner or an indirect manner. These drugs may impact neurotransmitter systems, interfere with neuronal activity or cause structural changes in the cerebellum. Some medications known to influence cerebellar function include:

Introduction

The cerebellum, a structure located at the back of the brain, plays a crucial role in coordinating movement, balance, and posture. Various factors along with drug use, can significantly impact its function resulting in cerebellar abnormalities. Among these effects, the rebound phenomenon stands out as a particularly intriguing aspect, shedding light on the intricate relationship between drugs and the brain.

Cerebellar Abnormalities and Drug Influence

Cerebellar Ataxia

Drug-induced cerebellar ataxia is a common manifestation of cerebellar dysfunction. Substances such as alcohol, anti epileptic drugs and certain chemotherapy agents can disrupt cerebellar function, leading to uncoordinated movements and impaired balance.

Neurotransmitter Imbalance

Many drugs alter neurotransmitter levels in the brain, affecting communication between neurons. GABAergic and glutamatergic neuro transmission, in particular, play crucial roles in cerebellar function. Disruption of these systems by drugs can contribute to cerebellar abnormalities.

An accumulation of cerebro Spinal fluid (CSF) within the brains ventricles, leading to the enhancement of intra cranial pressure (ICP). This condition can happen at any age and may result from many underlying causes. Hydrocephalus can be congenital or acquired. Symptoms of Hydrocephalus include headache, nausea, vomiting, Gait disturbances, enlargement of the head in infants. Diagnosis is based on medical history, review, physical examination, Diagnostic tests and imaging studies namely MRI or CT scans. Differential Diagnosis include normal pressure Hydrocephalus, intea cranial hemorrhage and idiopathic intra cranial hypertension. Treatment is dependent upon ventricular shunt and endoscopic third ventriculostomy. Finally it is concluded that Hydrocephalus is a complex neurological condition along with diverse causes as well as presentations.

Introduction

Hydrocephalus, often referred to as “water on the brain,” is a condition manifested by the accumulation of cerebrospinal fluid (CSF) within the brain’s ventricles, resulting in the enhancement of intracranial pressure (ICP). This condition can happen at any age and may result from various underlying causes. Understanding its history, causes, symptoms, diagnosis, differential diagnosis and treatment is critical for effective management.