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This book has been considered by academicians and scholars of great significance and value to literature. This forms a part of the knowledge base for future generations. We have represented this book in the same form as it was first published. Hence any marks seen are left intentionally to preserve its true nature.

The present book is compendium of recent original research in the field of aquatic ecology. It is an assemblage of up-to-date information of rapid advances and developments taking place in the field of aquatic ecology. The chapters in the book have been contributed by eminent scientists/academicians.The book is a unique compilation of 37 chapters which discusses exhaustive studies on fish biology, planktonology, physico-chemical environment, toxicology, physiology etc. With its application oriented and interdisciplinary approach, the book would be immensely useful to students, teachers, researchers, scientists,policy makers, environmental lawyers and others interested in aquatic ecology.The chapters in the book have been contributed by eminent scientists/academicians active in the areas of aquatic ecology.

Indian fisheries and aquaculture is an important sector of food production, providing nutritional security to the food basket, contributing to the agriculturalexports and engaging about fourteen million people in different activities. With diverse resources ranging from deep seas to lakes in the mountains and more than 10 per cent of the global biodiversity in terms of fish and shellfish species, the country has shown continuous and sustained increments in fish production since independence. Constituting about 4.4 per cent of the global fish production, the sector contributes to 1.1 per cent of the GDP and 4.7 per cent of the agricultural GDP. India has a coastline of about 8,129 km, 0.506 million sq. km of continental shelf and 2.02 million sq. km of exclusive economic zone. India is a major fish producer and ranks third in fisheries and second in the world aquaculture. This volume is a proceedings of National Conference on Emerging Trends in Fisheries and Aquaculture (ETFA-2012),organized by Post Graduate Department of Zoology, Yogeshwari Mahavidyalaya, Ambajogai (Maharashtra) during 27th-28th September, 2012. This volume presents a compilation of papers presented in the conference, addresses the issues, highlights the present constraints in the development and proposes strategies for advancement of this sector. This volume will be highly useful to planners, policy makers, scientists, fishery managers, environmentalists and those to who are directly and indirectly involved in the development and management of fisheries and aquaculture. It is hoped that the contents of this volume would provide a new orientation and impetus to fisheries development in India and offer better inputs for scientific management and utilization of the resources on a long-term sustainable basis, contributing to food security, economic viability of operations, ecological and environmental safety.