Technologies for fisheries enhancement

Technologies for fisheries enhancemen

Efficacy of spatial study on catch and effort from fishing vessels for strengthening fisheries management

Ever since marine fishery operations were extended beyond territorial waters of respective states, the need was felt for incorporating spatial component of fishing effort and catch for formulating marine fishery policies. The present study is an attempt of spatio-temporal analysis of changing scenario of fishing operations in GIS platform with catch and effort data collected from fishermen, to highlight the need for the change in approach in fisheries management and also for updating the information of fishing along the Indian coast. Marine fishing operations by commercial fishing vessels operated from different states has extended up to 200 m depth since 2000 and duration of fishing, especially trawling extended from single day to 8-13 days per voyage. Present findings were drawn from the analysis of 1,217 days of trawling operations during 2007-2013 by a sampling trawler supplemented by additional fishing operational data support from a group of commercial trawlers. Study reveals that there is an organised and confidential maintenance of log sheets in most of the progressive trawler operators and the information available in spatial platform can be utilized for better fisheries management with fishermen’s participation. Spatial analysis of fish catch from the sampling trawler operated from Mangalore showed that more than 70% of the fish landed in Mangalore was brought from the area beyond the territorial waters of Karnataka signifying that majority of fish catch landing to the state is from waters beyond their jurisdiction. Even though the fishery beyond territorial waters of all maritime states is s governed by Government of India, so far, there is no comprehensive management plans regarding fishing operations beyond territorial waters of the states. The study further reveals that fishing grounds beyond territorial waters of each state are being intensively fished without any fishing regulations and there were many conflicts being reported from these waters concerning the fishing rights of different sectors and different states. In the light of the findings from the study on fishing operations and fishery, an action plan to regulate the fishery off the territorial waters of each state is felt essential. “Regional fisheries committees” with members constituting the officials from neighbouring states sharing same resources with the aegis of Central Government is recommended as a viable option to take care of the management of the fishery within the Indian EEZ

Successful Demonstration of - Seabass cage culture in Karnataka

In Karnataka marine cage culture was attempted for the first time off Uppunda, near Byndoor by the Mangalore Research Centre of Central Marine Fisheries Research Institute (CMFRI) with the financial assistance from National Fisheries Development Board (NFDB), Government of India

कर्नाटक के अध्नाशिनी मुहाने में चूना कवच विदोहन

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CMFRI Special Publication No.121 Handbook on Application of GIS as a Decision Support Tool in Marine Fisheries

CMFRI Special Publication No.121(“Handbook on Application of GIS as a Decision Support Tool in Marine Fisheries”) is a pioneering attemptto elucidatethe application of GIS in the marine fisheries sector in India, describing the protocols for mapping marine fishery resources caught using all the gears operated along Indian coast, using GIS platform. The hand book describes the utilities of satellite-based technologies in marine fisheries and emphasizes the need for expanding our vision for satellite based technologies beyond Remote Sensing. The protocols described, with sufficient illustrations in the handbook will serve as a handy tool for incorporating spatial data in marine fisheries distribution, management and conservation studies. The hand book also provides guidelines and precautions for fishery researchers while analyzing marine fisheries data on a GIS platform. Further, the book suggests methods toincorporate GISroutines to study fisheries in relation to variability in environmental and ecological characteristics. The prospects of GIS based studiesin developingMonitoring, Control and Surveillance (MCS) in fisheries management with Vessel Monitoring System (VMS) and marine spatial planning for sustainable development of fisheries and mariculture are also discussed in the handbook

GIS for Assessing Spatio-temporal Variations in Trawl Bycatch off Mangalore Coast

In India, trawl is the major gear contributing more than 50% of the marine fish landing and during 2008-2011, the average landing along the Indian coast was estimated at 1.7 million t. In India, fish brought from trawl fishery for human consumption in fresh or processed form is termed as commercial landing and the rest is called low valued bycatch (LVB). The increased demand for LVB from fish meal plants is an emerging threat for marine fish production in the future, since LVB was constituted mainly by juveniles of commercial fishes. The study showed that the percentage of LVB from the trawlers in India increased from 21% in 2008 to 23% in 2011. The results of the study identify some of the fishing grounds and seasons, in which the percentage of juvenile bycatch of the commercial species is very high. Implementing operational restrictions in the fishery in such areas will help in reviving the stock. The paper illustrates the utility of the spatio- temporal data in suggesting seasonal and spatial restrictions in fishing operations in tropical multispecies scenario

Use of spatio-temporal data in reducing low value bycatch in trawl fisheries

Use of spatio-temporal data in reducing low value bycatch in trawl fisherie

Spatio-temporal analysis and impact assessment of trawl bycatch of Karnataka to suggest operation based fishery management options

Trawling is one of the most efficient methods of catching fish world over and is also the most important human intervention causing physical disturbance to the world’s continental shelves, and consequently, the physical destruction of ecosystems (Jennings and Kaiser, 1998). Trawling is targeted at specific groups of organisms, and trawl net being a non-selective gear, catches everything available in its towing path

Bycatch from Trawlers with special reference to Its Impact on Commercial Fishery, off Mangalore

Trawling, though one of the most efficient methods of fish capture, is also found to be the most important human caused physical disturbance on the world's continental shelves and hence the physical destruction of ecosystems (Jennings and Kaiser, 1998), Trawl fishery is generally a mixed fishery targeting a number of species and sizes simultaneously. Discarding is the practice of returning an unwanted section of the catch back to the sea during fishing operations (Alverson, 1994; Van Beek, 1998; Hall,2000

कर्नाटक के तटीय पानी में पिंजरों में मछ्ली पालन की साध्यताएं

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