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IJFS 2014, 13 Back to browse issues page
Effects of temperature on hematological and histopathological changes and survival rate of juvenile Fenneropenaeus vannamei experimentally challenged to White Spot Virus
S Kakoolaki * , I Sharifpour , M Afsharnasab , A Sepahdari , M. R Mehrabi , B Ghaednia , H Nezamabadi
Abstract:   (5888 Views)
Many shrimp farmers were suffering from White Spot Disease (WSD) onset in last decades. Oscillation of environmental factors could lead mortality in susceptible hosts. Our study was aimed to investigate the effect of different temperatures on juvenile Fenneropenaeus vannamei experimentally exposed to White Spot Virus (WSV). Five hundred and forty juveniles were distributed among 3 treatments in triplicates, 22, 25 and 30°C and experimentally WSV were injected in the shrimps. Our results showed mortality started at 36 h post inoculation (hpi) in the treatment at 25°C (T25), meanwhile the mean value of mortality percent at 54 hpi in T25 (71.10±17.35) showed the significant difference (p=.045) with T22 (3.33±3.33) and T30 (Not Observed, NO.). Our results suggest that in site selection, in primary stage of farm designing, water temperature at more than 29°C, should be considered as key environmental factor. This finding can lead us that why the White Spot Disease occurred with high mortality in some area when the days of shrimp culture were prolonged until mid autumn.
Keywords: White Spot Syndrom Virus, Temperature, Fenneropenaeus vannamei, Challenge
Full-Text [PDF 615 kb]   (2115 Downloads)    
Type of Study: Orginal research papers | Subject: Biology & physiology
Received: 2014/04/28 | Accepted: 2014/04/28 | Published: 2014/04/28
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Kakoolaki S, Sharifpour I, Afsharnasab M, Sepahdari A, Mehrabi M R, Ghaednia B et al . Effects of temperature on hematological and histopathological changes and survival rate of juvenile Fenneropenaeus vannamei experimentally challenged to White Spot Virus . IJFS. 2014; 13 (1) :91-102
URL: http://jifro.ir/article-1-1429-en.html


Volume 13, Issue 1 (1-2014) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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