Non‐lethal sampling for the stable isotope analysis of the critically endangered European eel Anguilla anguilla : how fin and mucus compare to dorsal muscle

• Published in: Journal of Fish Biology
• Main Authors: Boardman, Rose M., Pinder, Adrian C., Piper, Adam T., Roberts, Catherine Gutmann, Wright, Rosalind M., Britton, J. Robert
• Other Authors: Bournemouth University, Environment Agency
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2022
• Subjects: Aquatic Science; Ecology, Evolution, Behavior and Systematics; Anguilla anguilla
• Online Access: http://dx.doi.org/10.1111/jfb.14992; https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14992; https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14992

Abstract Ecological studies on the critically endangered European eel Anguilla anguilla often incorporate stable isotope analysis that typically uses dorsal muscle sampled from euthanised eels. To minimise the lethal sampling of imperilled populations, fin tissue and/or epidermal mucus can provide non‐lethal alternatives to muscle. The results here indicate that δ 13 C and δ 15 N values of both eel fin and mucus are not significantly different from those of muscle and can be applied directly in comparative SI studies.