Anjarle, Aade, Kelshi, Velas and Ansure in Mud Crab Farming and We Express Our Thanks to Them in Taking Part in Field Trips and Assisting Us in Collection of Samples
Total Page:16
File Type:pdf, Size:1020Kb
FINAL REPORT A strategic assessment of mud crab farming potential in brackishwater stretches between Velas and Dabhol in the Ratnagiri District of Maharashtra Project Funded by GIZ-CMPA Maharashtra Project on Conservation and Sustainable Management of Existing and Potential Coastal and Marine Protected Areas in Maharashtra Implementing Partners ICAR-Central Marine Fisheries Research Institute Mangrove Cell, Maharashtra Forest Department Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH Project Team K. Vinod, P.K. Asokan, P.U. Zacharia, P. Kaladharan, V.V. Singh, A.P. Dinesh Babu, N. K. Sanil, D.D. Sawant and A. Anasukoya ICAR-Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North P.O., Kochi 682 018, Kerala, India www.cmfri.org.in PROJECT FINAL REPORT A strategic assessment of mud crab farming potential in brackishwater stretches between Velas and Dabhol in the Ratnagiri District of Maharashtra Project Team K. Vinod, P.K. Asokan, P.U. Zacharia, P. Kaladharan, V.V. Singh, A.P. Dinesh Babu, N. K. Sanil, D.D. Sawant and A. Anasukoya Project Funded by GIZ-CMPA Maharashtra Project on Conservation and Sustainable Management of Existing and Potential Coastal and Marine Protected Areas in Maharashtra ICAR-Central Marine Fisheries Research Institute, Kochi 682 018, Kerala, India @ 2016, ICAR-Central Marine Fisheries Research Institute, Assessment of mud crab farming potential in Ratnagiri District of Maharashtra Acknowledgement We wish to express our sincere thanks to Mangrove Cell, Department of Forests, Government of Maharashtra for funding this important project to identify the suitable mud crab farming sites in brackishwater stretches between Velas and Dabhol in the Ratnagiri District of Maharashtra. We sincerely thank Dr. A. Gopalakrishnan, Director, ICAR-Central Marine Fisheries Research Institute (CMFRI), Kochi for providing all the required facilities, encouragement and support. We express our deep sense of gratitude to Shri N. Vasudevan, IFS, Chief Conservator of Forests, Mangrove Cell & Nodal Officer, GOI-GIZ-CMPA Maharashtra Project for his suggestions and critical review of the work progress. We sincerely thank all Heads of Divisions, Scientists and technical personnel of ICAR-CMFRI who have helped us during the sojourn of this project. We wish to place on record the timely services of the Administrative, Audit and Accounts Sections of ICAR-CMFRI, Kochi for executing this project. Dr. Girish Gopinath, Senior Scientist, CWRDM, Calicut helped us in the preparation of digitized maps of study stations and we sincerely acknowledge the timely help rendered by him. We express our gratitude and heartfelt thanks to Shri K. Yogesh Kumar, Research Scholar, Mangalore Research Centre of ICAR-CMFRI for his untiring efforts in collection of samples, processing and analysis during the field surveys. We also express our thanks to Mrs. Silpa, Technician in helping us in the analysis of sediment samples collected during the study. Shri Bhaskar Paul, Programme Officer, GOI-GIZ-CMPA Maharashtra Project has always been kind and supportive in all phases of the project and we extend our sincere thanks to him. The arrangements made by Shri Bhaskar Paul along with his team of Project Associates Shri Mohan Upadhye and Shri Abhinay Kelaskar helped us to conduct the 'Project Report Finalisation Workshop' at Dapoli very successfully. We also wish to place on records our sincere thanks to Shri Mohan Upadhye and Shri Abhinay Kelaskar, for all their support in arranging our field trips and village-level stakeholder meetings in Ratnagiri district. We appreciate the enthusiasm shown by the village leaders and the beneficiary groups of Anjarle, Aade, Kelshi, Velas and Ansure in mud crab farming and we express our thanks to them in taking part in field trips and assisting us in collection of samples. Finally, we thank all the stakeholders who actively participated in the 'Project Report Finalisation Workshop' and providing valuable inputs. i Assessment of mud crab farming potential in Ratnagiri District of Maharashtra TABLE OF CONTENTS SUMMARY 1 PROJECT PROFILE 3 INTRODUCTION 6 PROJECT INCEPTION WORKSHOP 9 POTENTIAL AREAS FOR MUD CRAB FARMING IN RATNAGIRI DISTRICT 14 Anjarle 16 Aade 22 Kelshi 28 Velas 34 Ansure 38 SCREENING OF WILD MUD CRAB FOR PRESENCE OF PATHOGENS 45 MEETING WITH LOCAL COMMUNITIES 46 PROJECT REPORT FINALISATION WORKSHOP 48 Inaugural session 49 Technical session 50 Group discussion 54 Plenary session 54 REFERENCES 55 Appendix I LIST OF PARTICIPANTS OF THE INCEPTION WORKSHOP 56 Appendix II LIST OF PARTICIPANTS OF THE PROJECT REPORT 57 FINALISATION WORKSHOP ii Assessment of mud crab farming potential in Ratnagiri District of Maharashtra LIST OF TABLES Table 1. Mangrove species observed at Anjarle Table 2. Physico-chemical parameters of water in brackishwater stretches at Anjarle Table 3. Nutrient characteristics and productivity in brackishwater stretches at Anjarle Table 4. Sediment characteristics in the brackishwater stretches of Anjarle Table 5. Mangrove species observed at Aade Table 6. Physico-chemical parameters of water in brackishwater stretches at Aade Table 7. Nutrient characteristics and productivity in brackishwater stretches at Aade Table 8. Sediment characteristics in the brackishwater stretches of Aade Table 9. Mangrove species observed at Kelshi Table 10. Physico-chemical parameters of water in brackishwater stretches at Kelshi Table 11. Nutrient characteristics and productivity in brackishwater stretches at Kelshi Table 12. Sediment characteristics in the brackishwater stretches of Kelshi Table 13. Mangrove species observed at Velas Table 14. Physico-chemical parameters of water in brackishwater stretches at Velas Table 15. Nutrient characteristics in brackishwater stretches at Velas Table 16. Sediment characteristics in the brackishwater stretches of Velas Table 17. Mangrove species observed at Ansure Table 18. Physico-chemical parameters of water in brackishwater stretches at Ansure Table 19. Nutrient characteristics and productivity in brackishwater stretches at Ansure Table 20. Sediment characteristics in the brackishwater stretches of Ansure iii Assessment of mud crab farming potential in Ratnagiri District of Maharashtra LIST OF FIGURES Fig. 1. Google map showing the study locations Fig. 2. Map of Anjarle showing the suitable sites for mud crab farming Fig. 3. Map of Aade showing the suitable sites for mud crab farming Fig. 4. Map of Kelshi showing the suitable sites for mud crab farming Fig. 5. Map of Velas showing the suitable sites for mud crab farming Fig. 6. Map of Ansure showing the suitable sites for mud crab farming ACRONYMS USED CMFRI Central Marine Fisheries Research Institute CMPA Coastal and Marine Protected Areas DNA Deoxyribonucleic Acid FAO Food and Agriculture Organisation GIZ-GmbH Deutsche Gesellscheft fur Internationale Zusammenarbeit GOI Government of India GOM Government of Maharashtra ICAR Indian Council of Agricultural Research IFS Indian Forest Service NPP Net Primary Production PCR Polymerase Chain Reaction TDS Total Dissolved Solids TSS Total Suspended Solids WSSV White Spot Syndrome Virus iv Assessment of mud crab farming potential in Ratnagiri District of Maharashtra SUMMARY The State of Maharashtra has vast stretches of estuaries, creeks and mangrove swamps which would have great potential for aquaculture. The mud crab, Scylla serrata is one good candidate species which has great demand in local markets as well as in the export trade and commands a premium price. The lucrative price for mud crabs, both in the domestic and international markets has made many coastal communities to opt for mud crab farming as one of the enterprise. The Department of Forests, Government of Maharashtra aims to promote mud crab farming in the state of Maharashtra considering the vast natural resources like the estuaries, tidal creeks and mangrove swamps which the state is endowed with and also considering the market potential. This novel approach aims at A total of 10.063 ha providing livelihood support to the local communities utilizing the have been identified mangrove wetlands, and thereby the local communities also as suitable area for shoulder the responsibility of conservation of mangroves. In this mud crab farming backdrop, GIZ-CMPA Maharashtra Project on 'Conservation and based on the Sustainable Management of Existing and Potential Coastal and Marine Protected Areas in Maharashtra' supported the programme studies carried out in which the ICAR-Central Marine Fisheries Research Institute, at Anjarle, Aade, Mangrove Cell of the Maharashtra Forest Department and Deutsche Kelshi, Velas and Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH are Ansure in the the implementing partners. Ratnagiri District of The main objective of the project was to undertake an assessment Maharashtra of mud crab farming potential in brackishwater stretches between 1 Velas and Dabhol in the Ratnagiri District of Maharashtra. The study was aimed to identify the suitable sites for sustainable mud crab culture in GIS environment based on various physical and environmental criteria including topography, soil types, land-use systems, vegetation, water quality, water availability, salinity, risks of flooding, infrastructure, seed resources and availability, market and support services. Detailed field surveys were conducted in brackishwater areas of Anjarle, Kelshi, Aade, Velas and Ansure in the Ratnagiri district of Maharashtra. All stations in the study region had patchy to thick