Laboratório de Biologia e Tecnologia Pesqueira, Instituto de Biologia, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
Departamento de Genética, Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
J Fish Biol. 2020 Oct;97(4):1268-1272. doi: 10.1111/jfb.14479. Epub 2020 Aug 23.
Understanding elasmobranch reproductive biology is necessary for species conservation. Multiple paternity (MP) has been reported for elasmobranchs, and this study investigates the reproductive aspects and mating system (paternity genetic analyses) for Squalus albicaudus. Thirteen pregnant females were analysed concerning reproductive parameters, and the mating system was assessed for nine females and their litters. The study found a mean fecundity of 2.84 pups per litter without correlation between total female length and the number of embryos per litter. One litter showed evidence of MP, indicating the presence of polyandrous behaviour of the species.
了解软骨鱼的生殖生物学对于物种保护是必要的。多父本（MP）已在软骨鱼类中被报道，本研究调查了白斑角鲨的生殖方面和交配系统（父本遗传分析）。对 13 只怀孕的雌性进行了生殖参数分析，并对 9 只雌性及其幼崽的交配系统进行了评估。研究发现，每窝幼崽的平均数量为 2.84 只，且总雌性长度与每窝胚胎数量之间没有相关性。一窝幼崽显示出多父本的证据，表明该物种存在多雄交配行为。
