Journal
JOURNAL OF FISH BIOLOGY
Volume 84, Issue 5, Pages 1574-1581Publisher
WILEY-BLACKWELL
DOI: 10.1111/jfb.12357
Keywords
elasmobranchs; isotopic differences; maternal influence; trace metal
Categories
Funding
- LIENSs
- CPER 13 (Contrat de Projet Etat-Region)
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Stable carbon (C-13) and nitrogen (N-15) isotopic values and total mercury (Hg) concentrations were analysed in muscle and liver of mothers and embryos of two aplacental shark species, Squalus megalops and Centrophorus moluccensis. Embryos of the two species had similar or lower isotopic values than their respective mothers, the only exception being for C-13, which was higher in the liver of C. moluccensis embryos than in their mothers. Hg concentrations were systematically lower in embryos compared with their mothers suggesting a low transfer of this element in muscle and liver.
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