Performance evaluation of different selective devices for the reduction of by-catch in shrimp trawls

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dc.contributor.authorPillai, N.S.
dc.contributor.authorVarghese, M.D.
dc.contributor.authorMathai, T.J.
dc.date.accessioned2014-03-11T05:55:51Z
dc.date.available2014-03-11T05:55:51Z
dc.date.issued2004
dc.description.abstractBy-catch landing in shrimp trawling accounted for 70 to 90% of the total catch due to non-selective fishing practice. This indiscriminate exploitation and large scale destruction of fish belonging to different species caught as by-catch including juveniles and young ones of some of the commercially important fisheries, lead to depletion of stock. The introduction of selective device in shrimp trawls enables to reduce the by-catch and other unwanted catch. These selective devices have been developed taking into consideration of the differential swimming pattern of fish and shrimp inside the trawl net. Different types of selective devices, known as by-catch reduction devices have been developed and successfully field tested in many countries. It has been reported that the reduction of by-catch varied from 15 to 35% by different devices without any significant reduction in the shrimp catch when compared to the control net. CIFT has developed four types of selective devices viz. square mesh window, radial escapement device, fish eye and grid for the reduction of by­ catch in shrimp trawling. The general performances and advantages of these devices are discussed in this paper.en_US
dc.identifier.citationPaper presented at the International Symposium on "Large Marine Ecosystems: Exploration and Exploitation for Sustainable Development and Conservation Organised by Fishery Survey of India, Mumbai at Cochin, 25-27 November 1998 ed. by Somvanshi, V.S., 569-576en_US
dc.identifier.urihttp://hdl.handle.net/123456789/1677
dc.language.isoenen_US
dc.publisherFishery Survey of India, Mumbai (India)en_US
dc.subjectShrimp trawlsen_US
dc.subjectperformance evaluationen_US
dc.subjectsquaremesh windowen_US
dc.titlePerformance evaluation of different selective devices for the reduction of by-catch in shrimp trawlsen_US
dc.typeArticleen_US
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