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Infection level of the Asian tapeworm (Bothriocephalus acheilognathi) in the cyprinid fish, Schizothorax niger, from Anchar Lake, relative to season, sex, length and condition factor

Various studies have shown that the Asian fish tapeworm, Bothriocephalus acheilognathi causes great economic loss in hatcheries, fish farms as well as in lakes. In order to understand the seasonal variation of infection in a nutrient-enriched lake, parasitological investigation was carried out in th...

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Published in:Parasitology research (1987) 2012, Vol.110 (1), p.427-435
Main Authors: Zargar, Ummer Rashid, Chishti, M. Z., Yousuf, A. R., Ahmed, Fayaz
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description Various studies have shown that the Asian fish tapeworm, Bothriocephalus acheilognathi causes great economic loss in hatcheries, fish farms as well as in lakes. In order to understand the seasonal variation of infection in a nutrient-enriched lake, parasitological investigation was carried out in the indigenous cyprinid fish, Schizothorax niger Heckel 1838 from September, 2008 to August, 2009. Overall, this study revealed definite seasonality of infection ( p  
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Z. ; Yousuf, A. R. ; Ahmed, Fayaz</creator><creatorcontrib>Zargar, Ummer Rashid ; Chishti, M. Z. ; Yousuf, A. R. ; Ahmed, Fayaz</creatorcontrib><description>Various studies have shown that the Asian fish tapeworm, Bothriocephalus acheilognathi causes great economic loss in hatcheries, fish farms as well as in lakes. In order to understand the seasonal variation of infection in a nutrient-enriched lake, parasitological investigation was carried out in the indigenous cyprinid fish, Schizothorax niger Heckel 1838 from September, 2008 to August, 2009. Overall, this study revealed definite seasonality of infection ( p  &lt; 0.05), with greater infection in summer (prevalence = 39.5%) and lesser in winter (prevalence = 8.1%). The prevalence among different seasons revealed significant differences ( p  &lt; 0.05). Sex was not an important factor influencing the prevalence of the Asian tapeworm. A strong positive correlation (Pearson’s correlation, r  = 0.7; p  = 0.02) between total length of S. niger and number of Asian fish tapeworms was observed. Similarly, a strong positive correlation existed between weight of fish and number of tapeworms (Pearson’s correlation, r  = 0.7; p  = 0.005). Prevalence and mean abundance were positively and significantly correlated with water temperature ( r  = 0.8, p  &lt; 0.01 and r  = 0.8, p  &lt; 0.01, respectively). Thus seasonal dynamics, total length and weight of the host significantly influenced the tapeworm infection. The above findings will be useful in devising the appropriate control strategies for the Asian tapeworm in wild fish in Kashmir valley as well as in similar climatic zones of other parts of the world. 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ispartof Parasitology research (1987), 2012, Vol.110 (1), p.427-435
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subjects Agnatha. Pisces
Animals
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Body Size
Body Weight
Bothriocephalus acheilognathi
Cestoda
Cestoda - isolation & purification
Cestode Infections - epidemiology
Cestode Infections - parasitology
Cestode Infections - veterinary
Cyprinidae
Cyprinidae - anatomy & histology
Cyprinidae - parasitology
Diphyllobothrium
Female
Fish Diseases - epidemiology
Fish Diseases - parasitology
Fresh Water
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
General aspects and techniques. Study of several systematic groups. Models
Health aspects
Host-parasite relationships
Immunology
Invertebrates
Male
Medical Microbiology
Microbiology
Nemathelminthia. Plathelmintha
Original Paper
Parasite Load
Physiological aspects
Prevalence
Schizothorax niger
Seasons
Sex Factors
Statistics as Topic
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
title Infection level of the Asian tapeworm (Bothriocephalus acheilognathi) in the cyprinid fish, Schizothorax niger, from Anchar Lake, relative to season, sex, length and condition factor
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