eChapters

Green nanocomposites offer promising possibilities for biomedical applications because biodegradable matrices can be combined with nanoscale fillers to obtain specific functional properties. This chapter explores their applications in tissue engineering and drug delivery, with attention to materials such as chitosan, alginate, cellulose, and polylactic acid. It discusses the fundamentals of green nanocomposites, tissue-engineering applications, controlled drug delivery, toxicity, biocompatibility, regulatory considerations, and current limitations. Nanocomposite systems can provide useful mechanical, thermal, antimicrobial, antioxidant, and therapeutic characteristics while supporting more sustainable material development. The chapter highlights the importance of balancing biomedical functionality, safety, environmental responsibility, processing requirements, and long-term biological compatibility.

Phenotypic Diversity

Phenotypic diversity measures the portion of genetic diversity which is expressed phenotypically. So it varies with the character under study and the genetic background and the environment in which it is measured. The measures of genetic diversity based on variance of quantitative traits may be unreliable indicators of diversity in a population at the level of individual gene. But diversity at the molecular level (isozymes, RFLPs) may be a reasonable estimate of phenotypic diversity. The degree of differentiation is related to several biological attributes such as breeding system, mode of pollination and seed dispersal, life history, geographical range, successional stages, etc. The outbreeding populations are much less differentiated whereas the selfers or apomictic are strongly differentiated. Populations of outbreeders contain different alleles especially the rare alleles which contribute little to the diversity. Inbreeders should have greater interpopulations diversity and less intrapopulation diversity than the comparable outbreeders. Further, inbreeders are more prone to show an even distribution of their genetic diversity among populations and this makes their optimum sampling more difficult and any evidence of the geographic pattern of this diversity levels would greatly improve sampling efficiency but geographical and environmental factors rarely explain more than 50% variation.

Biometrical genetics: This is a branches of genetics which uses the statistical concept and procedures for the study of genetic principles.

The need for better analytical tools to analyze the data in aquaculture leads to major developments in statistics. These tools play a significant role in the analysis and interpretation of data. Improvement in carp culture through genetic techniques is the only alternative for increasing the carp production and its quality when area of pond is fixed. For better hybrids or efficient strains for higher production it is essential to collect the data on the genetic diversity among the different carp species on the basis of traits. Therefore, sound statistical procedures are needed in the design of experiments as well as in the analysis of the data. This involves, the use of variability studies and the use of multivariate statistical techniques like correlations, path coefficients, D² analysis and other classificatory analysis.

Biometry is the measurement of various grossly visible dimensions of organs and their application in statistical analysis to generate biological data.
Various biometrical parameters used for different organs
The biometry of different organs is conducted with the help of non-stretchable thread, Vernier callipers, measuring scale, protector, glass beaker of various sizes, calibrated measuring cylinders, etc. While conducting biometry, it should be kept in mind that the way or the procedure for conducting biometry of different organs varies due to variation in shapes of the same and their positions. Some of the biometrical parameters of different organs and bones are summarized below.
1. Length: May be used to measure the distance between the highest points along the length of any bone or organ. Usually expressed in cm. Non-stretchable thread, Vernier callipers and measuring scale are used for this purpose.
2. Breadth: May be used to measure the distance between the highest points along the breadth of any bone or organ. Usually expressed in cm. Non-stretchable thread, Vernier callipers and measuring scale are used for this purpose.
3. Thickness: May be used to measure the distance between the highest points in regard to the thickness of any bone or organ. Usually expressed in cm. Non-stretchable thread, Vernier callipers and measuring scale are used for this purpose.
4. Volume: It is measures by water displacement of any organ. Usually smaller organs are used. The fresh organ is dipped into a calibrated

Biostatistics are the development and application of statistical methods to a wide range of topics in biology. It encompasses the design of biological experiments, the collection and analysis of data from those experiments and the interpretation of the results.

Quantitative traits are polygenic meaning they are controlled by many genes and gene interactions. Examples: height, weight, length etc.

Qualitative character

Qualitative traits are under the controlled of one or few genes, also called oligogeneic traits. For example, black or red coat color, horned or polled, coat color dilution, leaf color are all qualitative traits.

During winters, many of the evergreen species growing in the subtropics suffer chilling or freezing damage and the extent of damage however, depends greatly on their ability to perceive the low temperature stimulus and the capacity to modify the physiological or biochemical functioning at the molecular level;

Biochemistry: An Overview of Biomolecules Biochemistry is a branch of science that delves into the chemical composition and interactions of cells and organisms. It focuses on the molecular structures found within biological systems, their chemical characteristics, functions, and the reactions they undergo. By studying these molecules, biochemists gain insights into the fundamental processes that sustain life. Properties of Biomolecules General Characteristics Biomolecules are fundamentally organic compounds, sharing similar properties with typical organic molecules. They obey the same physical and chemical principles, undergo similar reactions, and adhere to universal physical laws. However, their complexity and biological specificity distinguish them from simpler organic compounds. Composition and Structural Features The backbone of biomolecules is predominantly composed of carbon, which forms four covalent bonds, often exhibiting a tetrahedral geometry. Carbon skeletons can exist in diverse forms like linear,

7.1. BioNET International

7.1.1. What is BioNet International

BioNET-International, is the Global Network for Taxonomy, and is dedicated to creating sustainable mechanisms to assist developing countries to overcome the Taxonomic Impediment by becoming self-reliant in taxonomy i.e. self-reliant in the skills, infrastructure (collections etc.) and technologies needed to discover, identify, name and classify and to understand the relationships of all organisms on this planet.

It is concerned with helping developing countries to recognise and know the organisms that constitute and threaten their biodiversity, not for taxonomy’s own sake, but rather to support national programmes for sustainable agricultural development, and conservation and sustainable use of the environment.

BioNET-International is particularly focused on helping countries implement the various environmental conventions such as the International Plant Protection Convention (IPPC; www.ippc.int) and the Convention on Biological Diversity (CBD; www.biodiv.org), especially its taxonomic capacity building compnent, the Global Taxonomy Initiative (GTI). The subregional networks of BioNET-International have been identified as appropriate structures through which much of the GTI (www.biodiv.org/programmes/cross-cutting/taxonomy/default.asp) can be effectively implemented.

The single piece of legislation under the Indian Government that regulates the import, manufacturing, sale, transportation, distribution, and use of all varieties of insecticides, including biopesticides, is the Insecticide Act (1968). Various parameters like shelf life, cross-contamination, moisture content, and packaging are significant factors that must be addressed before a biopesticide is registered. According to Organization for Economic Co-operation and Development’s (OECD) recommendations, CIB simplified the protocols and listed the infrastructure needs for manufacturing of biopesticides. Information required to generate toxicity calls a strenuous effort.

Agriculture is the main source of income of the rural masses in India and the disease accounts for more than 30% losses every year. According to a WHO estimate of 1990. There were 25 million cases of acute occupational pesticides poisoning in developing countries each year. ILO 1996 estimates suggests that out of 14% of all known occupational injuries 10% of all total injuries are caused by pesticides. Further more developing countries are a dustbin for the developed countries. More than 20, 000 tonnes of obsolete pesticides are dumped in Africa alone. The biopesticides are amenable to small scale and local production. Presently there is an increased awareness regarding environmental and food safety. The biopesticides as such can be used as an essential and fundamental component of integrated pest management. It helps to manage the disease which are difficult, otherwise to be managed and so also these control the pests resistant to conventional pesticides. Paulitz and Belanger (2001) has reviewed the potential of biological control in green house systems.

Three kinds of biocontrol products are being used in India which include 1) Microbial biopesticides, 2) Plant-derived botanical pesticides, and 3) Pheromones or other natural insect growth regulators. Microbial biopesticides consist majorly of fungi, bacteria, viruses or entomopathogenic nematodes as bioactive principles.

Introduction

Huge population in the developing countries requires increased amounts of food and fiber from a shrinking agricultural land base. Intensification of agriculture through expansion of irrigation facilities, introduction of high yielding varieties and application of increased amounts of agrochemicals has been in progress. Besides, the cultural practices like spacing, crop rotations, sowing times and tillage methods have been modified to achieve maximum productively per unit time from the available land. However, along with various technological achievements, sever outbreaks of insect pests, diseases and weeds in agricultural crops have also occurred. Many hitherto unknown species have assumed serious status and some of the serious pests have developed resistance to one or more groups of pesticides. In addition, pesticides have contaminated different components of our environment and pose a potential health hazard to consumers. Therefore, the future pest problems will have to be tackled in an environmentally benign manner as a part of a sustainable crop production technology (Dhaliwal and Heinrichs, 1998; Koul et al., 2004; Koul, 2008).

Worldwide, various biopesticides have been created and are in use, including viruses, microorganisms (bacteria, fungi, etc.), microorganism derived products, animal derived goods (pheromones, hormones, insect-specific toxins, etc.), plant derived products, and genetically modified organisms (Nicholson 2007; Erlandson 2008; Mazhabi et al. 2011; Islam and Omar 2012).

Definition

“Biological pesticides”, or “Biopesticides” as the name suggests, are naturally occurring substances that biologically control harmful pests, especially among field crops. These are naturally produced bio chemical materials basically non-toxic to the environment that can be employed in pest control. Biopesticides could mean living organisms (bacteria, virus, and algae), their products (biochemicals produced by them) and also plant byproducts. Biopesticides offer an ecologically effective solution to the harmful effects of synthetic pesticides.

Chemical pesticides though extremely effective in controlling pest population suffer from disadvantages. They have a broad toxic range and potentially toxic to non target organisms. Other constraints that have emerged with the use of chemical pesticides such as development of resistance and resurgence in insects, residual toxicity, secondary outbreak of minor insect pests, etc., In this juncture, the biopesticides have proven to be effective tool in managing the devastating insect pests of various crops.

The biopesticides are types of pesticides derived from natural materials such as microorganisms, plants, animals and certain minerals. They are living organisms or their products or byproducts, which can be used for the management of pests that are injurious to crop plants. Biopesticides have a vital role in crop protection, although most commonly in combination with other tools including chemical pesticides as part of integrated pest management (IPM). Microorganisms help to regulate the abundance of many pests or potential pests without any cost to society. Microbes can be increased artificially and thereby achieve faster, higher and more consistent control of the target pests that will occur naturally. Insect pathogens that are transmissible in nature from one host to another offer an important bonus effect that chemical insecticides do not have. A pathogen will kill pests exposed and many continue killing them by natural transmission from one individual host to another through subsequent host generation.

Biopesticides generally have several advantages compared to conventional pesticides. While chemical pesticides are responsible for extensive pollution of the environment, a serious health hazard due to the presence of their residues in food and development of resistance in targeted insect pest populations, biopesticides, in contrast, are inherently less toxic to humans and the environment, do not leave harmful residues, and are usually more specific to target pests. The agents employed as biopesticides, include parasites, predetors and disease causing fungi, bacteria and viruses, which are the natural enemies of pests. Utilization of naturally occurring parasites, predators and pathogens for pest control is a classical biological control. These bio agents can be conserved, preserved and multiplied under laboratory condition for field release. Once these bio-agents are introduced in the field to build their population considerably, they are capable of bringing down the targeted pest population below economic threshold level (ETL).

Introduction

Introduction of improved high yielding varieties of crop plants, use of modern agricultural practices coupled with essential control of pests of food and fiber crops have significantly contributed towards increasing the food production in green revolution era in India. Pesticide application forms the foremost limb in hiked agricultural food production and management practices. The production and post production management of crop yield requires increased use of pesticides.

Biopesticides presents biologically derived pest-management products as alternatives or complements to synthetic pesticides. The chapter explains their advantages, including biodegradability, target specificity, compatibility with Integrated Pest Management, reduced resistance risk, and comparatively favorable environmental characteristics. It classifies biopesticides into biochemical and microbial groups and describes mechanisms such as hyperparasitism, competition, antibiosis, parasitism, and volatile-compound production. Particular attention is given to neem and other botanical sources, including chinaberry, tobacco, pyrethrum, rotenone, and Melia toosendan. Their pest-control uses and preparation approaches demonstrate how botanical and microbial resources can contribute to sustainable crop protection and natural farming systems. for integrated crop protection effectively.

15.1 Biopiracy – Definition, Examples, and Impacts
Introduction
Biopiracy represents a grave ethical and legal concern in the field of biotechnology and intellectual property rights. It refers to the unauthorized and uncompensated exploitation of biological resources and traditional knowledge—primarily from developing countries—by corporations, research institutions, or individuals, often for commercial gains. Biopiracy is inherently unjust as it involves the misappropriation of community knowledge, undermining the rights of indigenous peoples, and violating the principles of equity, fairness, and sovereignty over natural resources.
As globalization intensifies biotechnological exploration, biopiracy challenges ethical norms and highlights the need for strong legal, institutional, and ethical safeguards.
Definition of Biopiracy
Biopiracy can be defined as:
“The unauthorized extraction, use, and commercialization of genetic resources or associated traditional knowledge from indigenous communities or biodiversity-rich regions without prior informed consent or fair and equitable benefit sharing.”
Biopiracy often involves patenting biological materials or indigenous medicinal knowledge without recognizing the origin communities as rightful holders of such knowledge or genetic wealth. It is closely linked to ethical misappropriation, exploitation, and violations of bioethical norms and international agreements.