IPMA, Portuguese Institute of Sea and Atmosphere, Avenida de Brasília, 1449-006 Lisbon, Portugal.
IPMA, Portuguese Institute of Sea and Atmosphere, Avenida de Brasília, 1449-006 Lisbon, Portugal.
Ecotoxicol Environ Saf. 2014 Apr;102:179-86. doi: 10.1016/j.ecoenv.2014.01.026. Epub 2014 Feb 14.
Jumbo (or Humboldt) squid, Dosidicus gigas, is a large jet-propelled top oceanic predator off the Eastern Pacific. The present study reports, for the first time, concentrations of V, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Cd and Pb in gills, mantle and digestive gland of this powerful pelagic squid in the Gulf of California. Zinc and Cu were the most abundant elements. All elements, with the exception of As, were largely stored in digestive gland; particularly Cd that reached concentrations between 57 and 509 µg g(-1). Significant relationships between tissues were found for Co (digestive gland-gills), As (gills-mantle) and Cd (digestive gland-mantle). Proportionality of Cd concentrations between mantle and digestive gland suggested that detoxification capacity by digestive gland was insufficient to avoid the transfer of this element to mantle and other tissues. Nonetheless, Cd concentrations in the mantle were always below the regulatory limit and, therefore lack of constraints for human consumption. On the basis of the fishery landings, one may estimate that up to 1t of Cd can be annually removed by jumbo squid fisheries.
大王酸浆鱿，巨枪乌贼，是东太平洋近海的一种大型喷气推进式海洋顶级掠食者。本研究首次报道了加利福尼亚湾这种强大的远洋鱿鱼的鳃、套膜和消化腺中 V、Cr、Mn、Co、Ni、Cu、Zn、As、Se、Cd 和 Pb 的浓度。锌和铜是最丰富的元素。除了砷，所有元素都主要储存在消化腺中；尤其是 Cd，浓度在 57 到 509 µg g(-1) 之间。在组织之间发现了 Co（消化腺-鳃）、As（鳃-套膜）和 Cd（消化腺-套膜）之间的显著关系。套膜和消化腺之间 Cd 浓度的比例表明，消化腺的解毒能力不足以避免该元素转移到套膜和其他组织中。尽管如此，套膜中的 Cd 浓度始终低于监管限值，因此不会对人类消费造成限制。根据渔业捕捞量，大王酸浆鱿渔业每年可能会去除多达 1 吨的 Cd。
