Inter-tissue variability in the stable isotope values of European perch ( Perca fluviatilis ) and pumpkinseed ( Lepomis gibbosus )

Ecological studies on native and invasive populations of European perch Perca fluviatilis and pumpkinseed Lepomis gibbosus are often based on stable isotope (SI) analysis based on dorsal muscle, where samples are usually taken from sacrificed fishes. However, other tissues, such as scale and fin tis...

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Bibliographic Details
Published in:	Knowledge and management of aquatic ecosystems no. 424; p. 22
Main Authors:	Kurtul, Irmak, Tarkan, Ali Serhan, Britton, J. Robert
Format:	Journal Article
Language:	English
Published:	EDP Sciences 2023
Subjects:	diet fish non-lethal sampling trophic ecology δ13c δ15n
Online Access:	Get full text
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Summary:	Ecological studies on native and invasive populations of European perch Perca fluviatilis and pumpkinseed Lepomis gibbosus are often based on stable isotope (SI) analysis based on dorsal muscle, where samples are usually taken from sacrificed fishes. However, other tissues, such as scale and fin tissue, can be used as non-lethal alternatives, where their SI values can be standardised to dorsal muscle values for comparative purposes. In both perch and pumpkinseed, there was a pattern of δ 13 C enrichment and δ 15 N depletion from muscle to fin and scale. As comparative studies must account for these inter-tissue differences prior to analyses, conversion equations for SI data from scale and fin tissue to standardised muscle values are provided.
ISSN:	1961-9502 1961-9502
DOI:	10.1051/kmae/2023018