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Abstract
The marine catfish (Arius arius) is widely consumed in many Asian countries because of their good nutrient values and meat. Helminth infection constitutes significant economic loss in fish industry. The aim of this study was to determine seasonal intensity of nematode (Raphidascaris acus Bloch, 1779) in different months from January, 2013 to December, 2014 in catfish (Arius arius Hamilton, 1822). During the study period a total of 560 catfish were examined. Amongst them 420 fish were infected with Raphidascaris acus. The location of the parasite was intestine. The data was analysed using one way analysis of variance (ANOVA). The follow up ANOVA included Duncan’s multiple range test. The month wise percentage of infection was significant (p < 0.001), while during 2013 the highest number of nematodes recorded were in the month of October followed by April. Whereas during 2014 the highest rate of infection was recorded during April. The high prevalence of nematode R. acus in October, 2013 and April, 2014 could be due to physical conditions such as water temperature, besides age of the fish may plays an important role in occurrence of helminth infection.

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Abdul Sattar, Aly Khan, Nasira Khatoon, Samina Waheed, S. Shahid Shaukat, Rana Hadi. (2021) INTENSITY OF NEMATODE (RAPHIDASCARIS ACUS BLOCH, 1779) IN DIFFERENT MONTHS FROM JANUARY, 2013 TO DECEMBER, 2014 IN CATFISH (ARIUS ARIUS HAMILTON, 1822) OF KARACHI COAST, PAKISTAN, , Volume 18, Issue 2.
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International Journal of Biology and Biotechnology
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Volume 18
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