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

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Title Copepod parasite Lepeophtheirus kabatai (Ho & Dojiri, 1977) infestation in orange spotted grouper, Epinephelus coioides (Hamilton, 1822) and its control in captivity
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Creator Ghosh,Shubhadeep
Megarajan,Sekhar
Santhosh,B
Xavier,Biji
Ranjan,Ritesh
 
Subject Epinephelus coioides, Formalin, Lepeophtheirus kabatai, Parasite
 
Description Not Available
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.
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Date 2021-09-17T09:00:33Z
2021-09-17T09:00:33Z
2018
 
Type Article
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/64034
 
Language English
 
Relation Not Available
 
Publisher Not Available