Variability in tissue‑specific trophic discrimination factors (∆13C and ∆15N) between Antarctic krill Euphausia superba and free‑ranging Pygoscelis penguins

• Published in: Polar Biology
• Main Authors: Ceia, Filipe R., Cherel, Yves, Seco, José, Barbosa, Andrés, Chipev, Nesho, Xavier, José C.
• Other Authors: Fundação para a Ciência e a Tecnologia (Portugal), European Commission
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer Nature 2021
• Subjects: Carbon; Nitrogen; Stable isotopes; Chinstrap; Gentoo; Isotopic variability; Antarctic; Livingston Island; Antarc*; Antarctic Krill; Antarctica; Euphausia superba; Polar Biology; Pygoscelis antarctica
• Online Access: http://hdl.handle.net/10261/249413; https://doi.org/10.1007/s00300-021-02889-2; https://doi.org/10.13039/501100000780; https://doi.org/10.13039/501100001871

For top consumers in marine environments, trophic discrimination factors (∆13C and ∆15N) between food and consumers’ tissues are expected to be similar among related species. However, few studies conducted in the laboratory indicate a large variability among species, which should be potentially high...