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Mother–embryo isotope ( δ 15 N , δ 13 C ) fractionation and mercury (Hg) transfer in aplacental deep‐sea sharks
Author(s) -
Le Bourg B.,
Kiszka J.,
Bustamante P.
Publication year - 2014
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.12357
Subject(s) - biology , mercury (programming language) , embryo , isotope , fractionation , stable isotope ratio , isotopes of nitrogen , chemistry , fishery , chromatography , physics , quantum mechanics , computer science , programming language
Stable carbon ( δ 13 C ) and nitrogen ( δ 15 N ) 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 δ 13 C , 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.