:: Volume 4, Issue 2 (9-2016) ::
JAIR 2016, 4(2): 31-43 Back to browse issues page
Survey on monthly variations catch per unit effort (CPUE) of Benthosema pterotum (Alcock, 1890) (Myctophidea) in Iranian waters of the Oman sea
Sasan Sadeghi Mazidi *
Abstract:   (3785 Views)

The present study aimed to determine monthly variations catch per unit effort (CPUE) of Benthosema pterotum (Myctophidea) in Iranians waters of the Oman Sea. In this survey, more than 665 cases of hauling net were analyzed from April 2011 to march 2012. CPUE in different seasons were calculated as 937±45, 1002±51, 828±51 and 640±43 kg/h in spring, summer, autumn and winter, respectively. In terms of trawling time, CPUE was calculated as 1108±60 in 2-3, 802±31 in 3-4 and 732±40 kg/h in>4 hours range. Furthermore, CPUE was calculated for different trawling depth and represented 922±33 for <250m and 791±36 kg/h for >250m depth layers. According to daytime in daybreak, CPUE was calculated as 779±37, 987±42 in the middle of the day and 805±48 kg/h in afternoon. Nonparametric Kolmogorov-Smirnov test showed normal distribution of CPUE data. The ANOVA test showed significance different between CPUE in different seasons, trawling time, trawling depth and daytime (P<0.05). Linear regression confirmed the relationship between CPUE with trawling depth and trawling time. The Pearson rank correlation showed relationship between CPUE with trawling time (p=0.0007) and trawling depth (p=0.009). 

Keywords: B. pterotum, Gulf of Oman, CPUE, Iranian waters, Hormozgan
Full-Text [PDF 282 kb]   (1466 Downloads)    
Type of Study: Research | Subject: Special
Received: 2015/10/11 | Accepted: 2015/12/22 | Published: 2016/09/21


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