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    Relative abundance and diel variation of zooplankton from south west coast of India

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    J_Indian_Fish_Assoc_23_73.pdf (901.6Kb)
    Date
    1993
    Author
    Santhakumari, V.
    Peter, K.J.
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    Abstract
    Relative abundance and diurnal variations of zooplankton from six anchor stations along Kerala Caost, were investigated. Samples were collected during April-May 1988 at three hour intervals from depths varying between 15 m and 40 m from the traditional fishing grounds of Kerala Coast. Average biomass values ranged from 45-95 ml 100/m sup(-3). Increase in zooplankton at night was discernible at most of the stations and the highest biomass noticed was 131 ml 100/m sup(-3). Copepods formed the most abundant group, of which calanoids predominated. A swarm of the hydromedusan species, Aequorea conica, (181/m sup(-3)) was seen at night. Quantitative and qualitative variations of various zooplankton groups from six stations in relation to selected physico chemical factors are discussed. Maximum fish larvae was observed in the night samples. Relatively high abundance of sardines, carangids and flat fish larvae in the collections is in agreement with the predominance of fish catch from the area of study.
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    http://drs.nio.org/drs/handle/2264/2783
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