Effect of trawling on dietary patterns of demersal fish community along the
M Asha Nair, C M Aravindan
Abstract
M Asha Nair, C M Aravindan
Abstract
The pattern of trophic organizations within fish community reflect the food resource partitioning existing in a given marine ecosystem. The present investigation was undertaken to understand the shifts in the dietary pattern of three demersal finfish species at two different sites, one where intense trawling is practised and the other where no trawling is undertaken. Multivariate statistical analysis viz ., cluster analysis was carried out to understand these patterns. Results of the study revealed interesting diet sharing patterns among the selected demersal fishes at trawled and non-trawled sites.
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The pattern of trophic organizations within fish community reflect the food resource partitioning existing in a given marine ecosystem. The present investigation was undertaken to understand the shifts in the dietary pattern of three demersal finfish species at two different sites, one where intense trawling is practised and the other where no trawling is undertaken. Multivariate statistical analysis viz ., cluster analysis was carried out to understand these patterns. Results of the study revealed interesting diet sharing patterns among the selected demersal fishes at trawled and non-trawled sites.
Key concepts: Trawling, Demersal zone, Demersal fish, Trophic level, Fishery, Fish <Actinopterygii>, Resource (disambiguation), Bottom trawling