Intraspecific differences in metabolic rates shape carbon stable isotope trophic discrimination factors of muscle tissue in the common teleost Eurasian perch (Perca fluviatilis).

ABSTRACT: Stable isotopes represent a unique approach to provide insights into the ecology of organisms. δ¹³C and δ¹⁵N have specifically been used to obtain information on the trophic ecology and food-web interactions. Trophic discrimination factors (TDF, Δ¹³C and Δ¹⁵N) describe the isotopic fractionation occurring from diet to consumer tissue, and these factors are critical for obtaining precise estimates within any application of δ¹³C and δ¹⁵N values. It is widely acknowledged that metabolism influences TDF, being responsible for different TDF between tissues of variable metabolic activity (e.g., liver vs. muscle tissue) or species body size (small vs. large). However, the connection between the variation of metabolism occurring wit

SUBMITTER: Scharnweber K 

PROVIDER: S-EPMC8293782 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature