Finfish diversity of trawl landings at Pamban therkuvady in south-east coast of India

The present research provides detailed information on the yearwise distributional patterns of fishes landed by trawl at Pamban therkuvady based on fortnightly samplings from September 2007 to April 2012. A total of 244 species belonging to 75 families under 18 orders were recorded. Quantitatively, Karalla dussumieri and family Leiognathidae dominated while by number of species, the family Carangidae contributed maximum with 20 species. The fish landing were the maximum during 2011-12 and was the minimum during 2008-09. Biodiversity studies were made using PRIMER 6 software. Different indices of conventional diversity as well as that of taxonomic distinctness based on dominance plot, dendrogram and funnel plots of delta+ and lambda+ are presented and discussed.