Lipid extraction has tissue-dependent effects on isotopic values (δ³⁴ S, δ¹³ C, and δ¹⁵ N) from different marine predators.

ABSTRACT:

Rationale

The use of sulfur isotopes to study trophic ecology in marine ecosystems has increased in the past decade. Unlike other commonly used isotopes (e.g., carbon), sulfur can better discriminate benthic and pelagic productivity. However, how lipid extraction affects sulfur isotopic values has not been assessed, despite its frequent use to remove lipid effects on δ¹³ C values.

Methods

We used white muscle and liver samples from two species of sharks and skin samples from two species of pinnipeds (sea lion and fur seal) to assess the effects of lipid extraction on stable isotope values for δ³⁴ S, δ¹³ C, and δ¹⁵ N. Isotopic values were determined using a continuous flow-isotope ratio mass spectrometer coupled to an elemental anal

SUBMITTER: Riveron S 

PROVIDER: S-EPMC9539579 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature