Intraspecific Relationship between Freshwater Carp Fish (Cypriniformes: Cyprinidae) Length-Weight and Prevalence of Ectoparasites
Journal Title: Global Journal of Animal Scientific Research - Year 2015, Vol 3, Issue 1
Abstract
During the present study, a total of 1800 fish of 6 species including indigenous and exotic fresh water carp (Cypriniformes: Cyprinidae) were examined for determining intraspecific-relationship between their lengthweight and prevalence of ectoparasites at Charbanda Carp Fish Hatchery (CCFH), Mardan, Khyber Pakhtunkhwa, Pakistan. The prevalence of 3 ectoparasites were recovered viz.: the anchor worm, Lernaea cyprinacea Linnaeus (Crustacea: Copepoda) (14.4%); carp lice, Argulus foliaceus Linnaeus (Crustacea: Maxillopoda) (3.6%) and salmon fluke, Gyrodactylus sp. Malmberg (Platyhelminthes: Monogenea) (2%). The relationship between body-length and ectoparasites revealed maximum infestation was 18.3% on both sides by L. cyprinacea in length group of 12-30 cm and it was minimum 8.1% in 69<cm group. While maximum prevalence was 15.5% by A. foliaceus in 69<cm and minimum 0.6% was in 12-30 cm groups. The prevalence by Gyrodactylus sp. was maximum 0.7% in 50-68 cm group. The relationship between body-weight and ectoparasites showed that L. cyprinacea was the highest 21% in 15-500 g and the lowest 8.2% in 987<g groups, while for A. foliaceus maximum prevalence 7.2% was observed in 987<g and the prevalence by Gyrodactylus sp. was maximum 0.5% in 501-986 g group. The prevalence of L. cyprinacea was 50.2% in indigenous and 49.9% exotic carp, however, the prevalence of A. foliaceus was 54% in exotic compared with indigenous (11%), moreover, Gyrodactylus sp. was only found in indigenous carp, i.e., C. mrigala (6%). Ectoparasites, L. cyprinacea, A. foliaceus and Gyrodactylus sp. are existing in Pakistan. This paper helps in keeping the health status of carp fish with respect to observe ectoparasites.
Authors and Affiliations
Farzana Perveen, Hanif Ullah
Keywords
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