title: Trace element concentrations in the top predator jumbo squid (Dosidicus gigas) from the Gulf of California.
abstract: 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.
authors: IPMA, Portuguese Institute of Sea and Atmosphere, Avenida de Brasília, 1449-006 Lisbon, Portugal. Electronic address: jraimundo@ipma.pt.
authors: Joana
authors: J
authors: Raimundo
authors: IPMA, Portuguese Institute of Sea and Atmosphere, Avenida de Brasília, 1449-006 Lisbon, Portugal.
authors: Carlos
authors: C
authors: Vale
authors: Guia Marine Laboratory, Oceanography Center, Faculty of Sciences University of Lisbon, Av. Nossa Senhora do Cabo, 939, 2750-374 Cascais, Portugal.
authors: Rui
authors: R
authors: Rosa
mesh_terms: D000818:Animals; D002140:California; D049832:Decapodiformes / Q000737:chemistry*; D004064:Digestive System / Q000737:chemistry; D020387:Food Chain; D005880:Gills / Q000737:chemistry; D009792:Oceans and Seas; D014131:Trace Elements / Q000032:analysis*
chemical_list: D014131:Trace Elements
keywords: Dosidicus gigas; Gulf of California; Jumbo squid; Trace elements