Cadmium, copper and zinc in octopuses from Kerguelen Islands, Southern Indian Ocean

International audience Concentrations of cadmium, copper and zinc were measured in 34 octopuses over a large range of size and weight, caught in the Kerguelen shelf waters. Compared with levels normally encountered in European cephalopods, Cd concentrations in both species were very high: 30.7-47.1...

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Bibliographic Details
Published in:Polar Biology
Main Authors: Bustamante, Paco, Cherel, Yves, Caurant, Florence, Miramand, Pierre
Other Authors: LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de biologie et environnement marins - LBEM (LBEML), Centre d'études biologiques de Chizé (CEBC), Centre National de la Recherche Scientifique (CNRS), Région Poitou-Charentes
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1998
Subjects:
Cephalopods
Octopus
Sub-Antarctic
Heavy metals
Cadmium
Digestive gland
Detoxification processes
[SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology
Antarctic
Kerguelen
Kerguelen Islands
Indian
Antarc*
Polar Biology
Online Access:https://hal.archives-ouvertes.fr/hal-00186628
https://hal.archives-ouvertes.fr/hal-00186628/document
https://hal.archives-ouvertes.fr/hal-00186628/file/Bustamante_et_al._1998.pdf
https://doi.org/10.1007/s003000050244
Description
Summary:International audience Concentrations of cadmium, copper and zinc were measured in 34 octopuses over a large range of size and weight, caught in the Kerguelen shelf waters. Compared with levels normally encountered in European cephalopods, Cd concentrations in both species were very high: 30.7-47.1 and 27.3-54.4 wg/g dry weight in Graneledone sp. and Benthoctopus thielei, respectively; Cu concentrations were generally low while Zn concentrations exhibited similar levels. Distribution of Cd in tissues showed that the high levels of Cd in Kerguelen octopuses resulted from very high levels of the metal in the digestive gland (369 and 215 wg/g dry wt in Graneledone sp. and Benthoctopus thielei, respectively). The digestive gland accumulated about 90% of the total Cd in the whole animal. Due to the very high concentrations of Cd in the Kerguelen octopuses, we hypothesize that these species play an important role in the process of Cd transfer throughout the food chain to top vertebrate predators in this area.

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