نوع مقاله : مقاله کامل علمی - پژوهشی
نویسندگان
1 دانشجوی کارشناسی‌ارشد صید و بهره‌برداری آبزیان، دانشکده علوم دریایی، دانشگاه دریانوردی و علوم دریایی چابهار
2 استادیار گروه شیلات، دانشکده علوم دریایی، دانشگاه دریانوردی و علوم دریایی چابهار
3 عضو هیأت علمی گروه شیلات دانشکده علوم و فنون دریایی، دانشگاه هرمزگان
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The present study was aimed to assess spatial variation of the catch composition and catch rate of Gargoor trap fishery in the Beris fishing grounds, Sistan and Baluchistan province, between September and March 2021. Thirty Gargoors’ fishing operation in two depth strata, (1) average depth (±SD) of 28 (±2.04) m; 12 No. (2) average depth (±SD) of 52 (±1.48) m; 18 No., were monitored weekly. Despite that mean CPUE (± S.E.) of Gargoors in the depths of 30 and 50 m were computed at 2892±658.57 and 3257±501.24 g. garoor-1. week-1, there was no significant difference between them (P>0.05). Moreover, catch rate based on the number of specimens caught, was differed between the groups (P<0.05). The catch composition of the Gargoors located in the depth of 28 m included 5 species which Lutjanus johnii and Heniochus acuminatus had the maximum and minimum weighted abundance and Argyrops filamentosus and Caranx heberi had the highest and lowest numerical abundance. As well, 12 species were captured by the Gargoors in the depth of 52 m which Caranx heberi and Abalistes stellaris had the maximum and minimum weighted abundance and Scomberoides commersonnianus had highest numerical abundance. Results of nMDS and ANOSIM statistical tests indicated a weak dissimilarity between the catch composition of Gargoors in the two studied depth stratums.
کلیدواژه‌ها [English]
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