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1986•Indian Journal of FisheriesOpen access

A NOTE ON THE MONSOON FISHERY FOR THREADFIN BREAMS OFF COCHIN

K V Somasekharan Nair, A A Jayaprakash

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Abstract

The threadfln bream fishery by shrimp trawlers, constituted by Nemipterus japonicus and N. mesoprion, is subject to great seasonal and annual flucuations, the total catch, as well as the catch rate, being highest during SW monsoon. It appears from the catch trends at various depths that nemipterids, which normally inhabit in the depth zone 75-100 m, migrate to 35-40 m during monsoon, coinciding with upwelling. The hydrographic conditions which might be causing this shift of the population is discussed.

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What this paper is about

The threadfln bream fishery by shrimp trawlers, constituted by Nemipterus japonicus and N. mesoprion, is subject to great seasonal and annual flucuations, the total catch, as well as the catch rate, being highest during SW monsoon. It appears from the catch trends at various depths that nemipterids, which normally inhabit in the depth zone 75-100 m, migrate to 35-40 m during monsoon, coinciding with upwelling. The hydrographic conditions which might be causing this shift of the population is discussed.

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Available abstract

The threadfln bream fishery by shrimp trawlers, constituted by Nemipterus japonicus and N. mesoprion, is subject to great seasonal and annual flucuations, the total catch, as well as the catch rate, being highest during SW monsoon. It appears from the catch trends at various depths that nemipterids, which normally inhabit in the depth zone 75-100 m, migrate to 35-40 m during monsoon, coinciding with upwelling. The hydrographic conditions which might be causing this shift of the population is discussed.

Key concepts: Fishery, Hydrography, Monsoon, Upwelling, Oceanography, Shrimp, Population, Marine fisheries

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