Copepod parasite Lepeophtheirus kabatai (Ho & Dojiri, 1977) infestation in orange spotted grouper, Epinephelus coioides (Hamilton, 1822) and its control in captivity

Ranjan, Ritesh and Xavier, Biji and Santhosh, B and Megarajan, Sekhar and Ghosh, Shubhadeep (2018) Copepod parasite Lepeophtheirus kabatai (Ho & Dojiri, 1977) infestation in orange spotted grouper, Epinephelus coioides (Hamilton, 1822) and its control in captivity. Indian Journal of Fisheries, 65 (3). pp. 122-125.

[img] Text
Ritesh Ranjan_2018_IJF_65-3_Copepod parasite Lepeophtheirus kabatai.pdf

Download (503kB)
Official URL: http://epubs.icar.org.in/ejournal/index.php/IJF/ar...
Related URLs:

    Abstract

    Parasitic infection in the orange spotted grouper Epinephelus coioides (Hamilton, 1822) and its control measures in captive conditions were studied. Wild collected groupers after 8 weeks of rearing in captivity showed lethargy and sluggishness. The caligid parasite, Lepeophtheirus kabatai (Ho & Dojiri, 1977) was identified from the affected fishes. This parasite was also prevalent in wild fish, however at lower prevalence (11%). The mean intensity of L. kabatai in fishes reared in captivity was 92.85±10.71, whereas in wild fish it was 3.54±1.61. Infected cultured fish were randomly assigned to one of five treatment groups (Group A, B, C, D and E). Group A fishes were given dip treatment in freshwater for 5 min, whereas groups B, C, D and E were given bath treatment in formalin @ 50, 100, 150 and 200 mg l-1 respectively for 30 min, followed by 5 min dip in freshwater. Group E fish were fully free of the infestation and no re-infestation was seen in them even after two months. This is the first study to confirm L. kabatai infestation in orange spotted grouper in both wild and cultured fish; and formalin treatment @ 200 mg l-1 was found effective to control the infestation in captivity.

    Item Type: Article
    Uncontrolled Keywords: Epinephelus coioides, Formalin, Lepeophtheirus kabatai, Parasite
    Subjects: Fish and Fisheries > Fish Disease
    Copepods
    Demersal Fishes > Groupers
    Divisions: CMFRI-Visakhapatnam
    Depositing User: Arun Surendran
    Date Deposited: 03 Oct 2018 11:38
    Last Modified: 03 Oct 2018 11:38
    URI: http://eprints.cmfri.org.in/id/eprint/13040

    Actions (login required)

    View Item View Item