Studies on Major Small Pelagic Fishes Along the Kerala Coast with Respect to the Potential Fishery Zone (Pfz) Advisories
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STUDIES ON MAJOR SMALL PELAGIC FISHES ALONG THE KERALA COAST WITH RESPECT TO THE POTENTIAL FISHERY ZONE (PFZ) ADVISORIES Thesis submitted to the MANGALORE UNIVERSITY In partial fulfilment of the degree of Doctor of Philosophy in BIOSCIENCES Under the Faculty of Science and Technology Preetha G. Nair (August 2015) CENTRAL MARINE FISHERIES RESEARCH INSTITUTE (Indian Council of Agricultural Research) Post Box 1603, Kochi, Kerala, PIN 682018 Declaration The candidate, Preetha G Nair, do hereby declare that this thesis ‘Studies on major small pelagic fishes along the Kerala coast with respect to the Potential Fishery Zone (PFZ) advisories’ is a genuine record of the research work carried out by me under the guidance of Dr. Shoji Joseph (Principal Scientist, Central Marine Fisheries Research Institute, Kochi, India) in partial fulfillment for the award of Ph.D. degree under the faculty of Bioscience, Mangalore University and no part of the work has previously formed the basis for the award of any degree, diploma, associateship, or any other title or recognition from any University / Institution Kochi - 682018 Preetha G Nair 03-08-2015 Certificate This is to certify that this Ph.D. thesis ‘Studies on major small pelagic fishes along the Kerala coast with respect to the Potential Fishery Zone (PFZ) advisories’ submitted by Preetha G Nair is an authentic records of the research work carried out under my guidance and supervision at Central Marine Fisheries Research Institute, Kochi, Kerala, India in partial fulfillment of the requirement for the award of Ph.D. degree under the faculty of Bioscience, Mangalore University. The thesis or any part thereof has not previously presented for the award of any degree, diploma, associateship, or any other title or recognition from any University / Institution. Kochi - 682018 Dr. Shoji Joseph 03-08-2015 (Guide) Principal Scientist Central Marine Fisheries Research Institute, India Certificate This is to certify that this thesis ‘Studies on major small pelagic fishes along the Kerala coast with respect to the Potential Fishery Zone (PFZ) advisories’ submitted by Preetha G Nair is an authentic records of research work carried out under my Co-guidance and supervision at Central Marine Fisheries Research Institute, Kochi, India in partial fulfillment of the requirement for the award of Ph.D. degree under the faculty of Bioscience, Mangalore University. The thesis or any part thereof has not previously presented for the award of any degree, diploma, associateship, or any other title or recognition from any University / Institution. Kochi - 682018 Dr. V. Narayana Pillai 03-08-2015 (Co- Guide) Former Director, Central Marine Fisheries Research Institute, India Acknowledgements -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- I am greatly indebted to Dr. Shoji Joseph (Guide), Principal Scientist, CMFRI, Kochi and Dr. V. Narayana Pillai (Co-Guide), Former Director, CMFRI for their guidance, constant encouragement and support during the course of this study. I am grateful to Dr. A. Gopalakrishnan and Dr. G. Syda Rao, present and former Directors of CMFRI, for encouragement, facilities and administrative support. I record my sincere thanks to Dr. Satheesh Chandra Shenoi, Director, INCOIS, Hyderabad for giving me an opportunity to work as a Senior Research Fellow under the Potential Fishery Zone (PFZ) advisory Project. I am indebted to Dr. V. Kripa, my present Project Leader and Principal Scientist, CMFRI for encouragement and motivation to complete this work. I express my thanks to Dr. P.S. Parameswaran, Scientist - in - Charge, NIO Regional Centre, Kochi for allowing me to use some of the equipment facilities. The logistic support provided by Dr. T. Sreenivasakumar and Dr. M. Nagarajakumar, INCOIS under PFZ advisory programme is thankfully remembered. The scientific support provided by Dr. E.M. Abdussamad, Principal Scientist, CMFRI is gratefully acknowledged. I express my gratitude for the guidance received from Dr. E.V. Radakrishnan, Dr. E. Vivekanandan (ICAR Emeritus Scientists), Dr. K. Sunilkumar Mohamed (Head, MFD) and Dr. D. Prema (Principal Scientist, FEMD), CMFRI, Kochi. The scientific support extended by Dr. R. Jeyabaskaran (Senior Scientist, CMFRI), Dr. A. Nandakumar, L.R. Khambadkar and other technical staff of CMFRI, Kochi is thankfully acknowledged. I record my gratitude to Dr. P.U. Zacharia, Dr. U. Ganga, Dr. Somy Kuriakose, Dr. S. Lakshmi Pillai, CMFRI, Kochi and Dr. N.V.Madhu, NIO Regional Centre Kochi for their help and encouragement. I am indebted to Dr. P.C. Thomas and Dr. Boby Ignatius (former and present SICs, HRD Cell, CMFRI) for their timely help in all matters concerned with my Ph.D. programme. The help and support extended by the HRD cell staff, CMFRI are thankfully acknowledged. I wish to express my sincere thanks to OIC and other staff members of library for the help and cooperation extended. I thank Shri. D. Prakasan, Shri. M.N. Kesavan Elayathu and Smt. K.V. Rema (staff of CMFRI, Kochi) for their immense help and constant encouragement to carry out my work. I thank Mr. Saurav Maity, INCOIS, Mr. L. Jagadeesan and Mr. C. Karnan and Mr. R.S. Pandiarajan NIO RC Kochi for their great logistic and scientific help during this research work. It is my pleasure to acknowledge my friends Rajool Shanis, Dr. K.V. Akhilesh, R. Remya, U. Manjusha, P.B. Ajith Kumar, Arun Surendran, P.R. Abhilash, K.S. Aswathy, A.M. Dhanya, and Jinesh P.T. for their help and encouragement. There are no words to convey my profound gratitude to my family, especially my husband Dr. R. Jyothibabu, parents, parents- in- law, brother, sister, brother-in-law and sisters-in-law for their love and inspiration to complete this work. My special thanks to my daughters Ms. Anupama and Ms. Anamika for their patience in difficulties during this work. Above all, I bow before the Almighty for His blessings, which enabled me to restart my career and complete this work; otherwise, it would have remained a dream. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Preetha G. Nair Acronyms ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ ANCOVA - Analysis of Covariance ANOVA - Analysis of Variance AVHRR - Advanced Very High Resolution Radiometry °C - Degree Centigrade Chl. a - Chlorophyll a CIESM - Mediterranean Science Commission CMFRI - Central Marine Fisheries Research Institute CPUE - Catch per Unit Effort CZCS - Coastal Zone Colour Scanner DOC - Dissolved Organic Carbon EDB - Electronic Display Board ELEFAN - Electronic Length Frequency Analysis HNF - Heterotrophic Nanoflagellates HP - Horse Power HTB - Heterotrophic Bacteria ICAR - Indian Council of Agricultural Research ICMAM- Integrated Coastal and Marine Area Management INCOIS - Indian National Centre for Ocean Information Services IRS - Indian Remote Sensing Satellite LWR - Length Weight Relationship m - Meter µm – Micrometer M - Micromole MODIS - Moderate Resolution Imaging Spectroradiometer MSP - Mesozooplankton MZP - Microzooplankton NIO - National Institute of Oceanography NOAA - National Oceanic and Atmospheric Administration OAL - Overall Length OCM - Ocean Colour Monitor OCR - Ocean Colour Radiometry PFZ - Potential Fishery Zone PRIMER - Plymouth Routines In Multivariate Ecological Research SST - Sea Surface Temperature SSH- Sea Surface Height -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- TABLE OF CONTENTS PAGE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CHAPTER 1- GENERAL INTRODUCTION AND LITERATURE REVIEW 1-18 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1.1. Marine pelagic fishes 1 1.2. Fishes of interest and their fishery along the Kerala coast 2 1.2.1. Indian oil sardine (Sardinella longiceps) (Valenciennes, 1847) 2 1.2.2. Indian mackerel (Rastrelliger kanagurta) (Cuvier, 1817) 4 1.2.3. Anchovies 5 1.3. Legislation to conserve the fishery along the Kerala coast