Paulina Sepa , Dialhy Coello , Marco Herrera , René Zambrano
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引用次数: 2
摘要
本文报道了2018 - 2020年在厄瓜多尔海域深海鳕鱼(Dissostichus eleginoides)实验渔业中捕获的四种深海软骨鱼(即Hydrolagus spp.， E. granulosus, C. owstonii和C. squamosus)的长度-重量关系。捕鱼包括592次，从1000米深度开始，使用1000到1500个N°14/0圆钩。用幂模型(y = axb)估计长度-权重关系(LWR)。决定系数(r2)均在0.94以上。斜率(b)呈负异速生长(b <3)褐石棘球绦虫雌虫、鳞状棘球绦虫雄虫、细粒棘球绦虫雄虫异速生长呈阳性(b >3)细粒棘球绦虫(E. granulosus)和水螅绦虫(Hydrolagus sp .)雌虫和褐鳞棘球绦虫(C. owstonii)雄虫和鳞状棘球绦虫(C. squamosus)雄虫。此外，雌雄组合的异速生长在褐家鼠中呈阴性，在鳞状家鼠和细粒家鼠中呈阳性。
Length-weight relationship of four deep-sea chondrichthyans (Elasmobranchii & Holocephali) in Ecuadorian oceanic waters
The present work reported the length-weight relationship of four deep-sea chondrichthyan species (i.e., Hydrolagus spp., E. granulosus, C. owstonii and C. squamosus) captured by the experimental fishery of the depth cod (Dissostichus eleginoides) in Ecuadorian oceanic waters, from 2018 to 2020. The fishing included 592 hauls, starting at 1,000 m depth, using between 1,000 to 1,500 N° 14/0 circle hooks. Length-weight relationship (LWR) was estimated by the power model (y = axb). The determination coefficient (r2) value was always above 0.94. The slope (b) showed negative allometric growth (b < 3) for females of C. owstonii, C. squamosus and males of E. granulosus and Hydrolagus spp. Allometry was positive (b > 3) in females of E. granulosus and Hydrolagus spp. as well as, in males of C. owstonii and C squamosus. In addition, the allometry for the combined sexes was negative in C. owstonii and was positive in C. squamosus and E. granulosus.
期刊介绍：
The Egyptian Journal of Aquatic Research is published by the National Institute of Oceanography & Fisheries. The Journal isdevoted to the publication of original papers and reviews in all branches of aquatic sciences (Oceanography, Limnology, Fisheries,Aquaculture and environmental sciences)
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