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Evaluation of multispecies marine fishery in West Bengal, India using diversity indices

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Title Evaluation of multispecies marine fishery in West Bengal, India
using diversity indices
Not Available
 
Creator Ammini,P L
Kuriakose,Somy
Mini,K G
Augustine,Sindhu K
 
Subject Biodiversity
Multi-species marine fishery
Shannon’s index
Simpson’s index
West Bengal
 
Description Not Available
The effective management and conservation of ecosystems rely greatly on the understanding of spatial and temporal
distributions of the fish community, ecological variables and fishing activity. The information on landings for all species by
commercial fisheries can facilitate analysis of species diversity and distribution patterns. This paper attempts to assess the
marine fishery in West Bengal, with emphasis on the diversity with special regard to the variation in quantity of fish caught
during different seasons. During this period, a total of 154 different species of fish and shellfishes were landed along the West
Bengal coast among which, demersal species were highest in number (65), followed by pelagic species (59). Only two or
three groups were dominant in different seasons. During the first (January – March) and fourth (October – December)
season, the dominant groups were Bombayduck, croakers and prawns. While, in the third (July – September) season, the
dominant species were hilsa shad followed by Bombayduck and croakers. For assessing the diversity of fisheries in
West Bengal, Simpson’s index and Shannon’s index were calculated from the season-wise estimated marine fish landings for
the period 2007-2010. The values of Simpson’s index varied from 0.06 to 0.37, the lowest recorded in first season of 2009
and highest in third season of 2007. The highest value was mainly because of the landings of a single species, the hilsa shad.
Not Available
 
Date 2021-09-16T08:12:50Z
2021-09-16T08:12:50Z
2013
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63145
 
Language English
 
Relation Not Available
 
Publisher Central Marine Fisheries Research Institute