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A study on copepod parasites of marine fish Johnius aneus (Bloch, 1793) from Visakhapatnam coast, Andhra Pradesh, India.

Vijaya Lakshmi K.*, Sowjanya P., Sreeramulu K.

Abstract


Dumping of industrial wastes into the sea is a common factor in and near by coastal cities where by there are mass mortalities of fishes as well as health deterioration of fish health.  These fishes are prone to secondary infections by microbial and eukaryotic parasitic species.  In the present study a survey has been made on Johnius aneus for copepod parasites infection.  The study has been conducted+ for 10 months.  3 species of parasites were recorded-Lernanthropus Otolith, Pillai, 1963 Caligus annualaris Yamaguti, 1954 and Brachiella albida Ranganekar, 1956.  To know the host parasite interaction, prevalence and Mean Intensity of overall parasites and individual parasite species have been studied.  It is found that over all prevalence is high being 44%, whereas Mean intensity is less being 1.6.  This gives an overall view of parasitization of copepods on the fish Johnius.  It indicates that infection with copepod parasites is common but not heavy.

Keywords


Johnius aneus, Lernanthropus otolith, Brachiella albida, caligus annularis

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References


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DOI: http://dx.doi.org/10.21746/ijbio.2016.03.0015

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