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1. Mother-offspring isotope fractionation in two species of placentatrophic sharks.

Author

Vaudo JJ, Matich P, and Heithaus MR

Subjects
Animals, Carbon Isotopes analysis, Embryo, Nonmammalian chemistry, Female, Nitrogen Isotopes analysis, Sharks metabolism, Carbon Isotopes metabolism, Nitrogen Isotopes metabolism, Sharks physiology
Abstract

Stable-isotope values of a scalloped hammerhead Sphyrna lewini and blacktip shark Carcharhinus limbatus and their respective embryos were analysed. Embryos of both species were enriched in δ(15) N compared to their mothers (0·82 and 0·88‰, respectively), but fractionation of δ(13) C varied. Embryonic S. lewini were enriched (1·00‰) in δ(13) C while C. limbatus were depleted (0·27‰) relative to their mothers., (© 2010 The Authors. Journal of Fish Biology © 2010 The Fisheries Society of the British Isles.)

Published
2010
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