Niella Y V, Duarte L A G, Bandeira V R, Crespo O, Beare D, Hazin F H V
Universidade Federal Rural de Pernambuco, Departamento de Pesca e Aquicultura, CEP 52171-900, Recife, PE, Brazil.
Universidade do Estado do Rio de Janeiro, Departamento de Ecologia, CEP 20559-900, Rio de Janeiro, RJ, Brazil.
J Fish Biol. 2018 Apr;92(4):1082-1089. doi: 10.1111/jfb.13569. Epub 2018 Feb 21.
The predation of cookie-cutter sharks Isistius spp. upon the early life stages of yellowfin tuna Thunnus albacares, skipjack tuna Katsuwonus pelamis and little tunny Euthynnus alletteratus are described. New evidence suggesting a connection between commercial fishing and predation by Isistius sp. is presented, with these sharks biting tunas hooked in surface waters during daylight. The healing patterns of the wounds made by the sharks are described in detail and, although such damage is known to negatively influence market price elsewhere, it is not the case on the south-east Brazilian coast.
描述了雪茄达摩鲨（Isistius spp.）对黄鳍金枪鱼（Thunnus albacares）、鲣鱼（Katsuwonus pelamis）和小金枪鱼（Euthynnus alletteratus）幼鱼阶段的捕食情况。提出了新的证据，表明商业捕鱼与达摩鲨属（Isistius sp.）的捕食之间存在联系，这些鲨鱼在白天咬食在表层水域上钩的金枪鱼。详细描述了鲨鱼造成的伤口愈合模式，尽管已知这种损伤在其他地方会对市场价格产生负面影响，但在巴西东南海岸并非如此。
