Statolith microchemistry traces environmental history of the boreoatlantic armhook squid Gonatus fabricii.

Zumholz, Karsten, Klügel, Andreas, Hansteen, Thor and Piatkowski, Uwe (2007) Statolith microchemistry traces environmental history of the boreoatlantic armhook squid Gonatus fabricii. Open Access Marine Ecology Progress Series, 333 . pp. 195-204. DOI 10.3354/meps333195.

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Statoliths of the gonatid squid Gonatus fabricii from Disko Bay, West Greenland, were analysed by laser ablation inductively coupled plasma mass-spectrometry (LA-ICP-MS) to determine the concentrations and spatial distributions of 9 minor and trace elements (Sr, Ba, Mg, U, Zn, Mn, Y, Zr, Na). Element composition was assigned in situ to distinct statolith regions, corresponding to ontogenetic stages of an individual squid’s life. Significant variations in concentrations of all measured elements except Na were found between different regions of the statolith. Variations in Ba/Ca ratios suggest that juveniles inhabit surface waters, while larger specimens move to deeper waters. U/Ca and Sr/Ca ratios increased towards the outer statolith region, suggesting migration of adult squid into colder waters. Mg/Ca ratios decreased progressively from the core to the edge, most likely related to changes in protein concentrations in their microstructure during ontogenesis. This study is one of the first to apply LA-ICP-MS to cephalopod statoliths. Our results emphasise the strong potential of spatially resolved statolith analyses to gather information on life history, migrations and habitat use of cephalopods.

Document Type: Article
Keywords: Ichthyology; Statolith; Trace elements; Laser-alblation ICP-MS; Cephalopods; Squid; Donatus fabricii; Greenland
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.3354/meps333195
ISSN: 0171-8630
Projects: Future Ocean
Date Deposited: 03 Dec 2008 16:51
Last Modified: 01 Jun 2018 07:35

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