% pubman genre = article
@article{item_3570901,
title = {{Zinc isotope composition of enameloid, bone and muscle of gilt-head seabreams (Sparus aurata) raised in pisciculture and their relation to diet}},
author = {McCormack, Jeremy and Jaouen, Klervia and Bourgon, Nicolas and Sisma-Ventura, Guy and Tacail, Th{\'e}o J. G. and M{\"u}ller, Wolfgang and T{\"u}tken, Thomas},
language = {eng},
issn = {0025-3162; 1432-1793},
doi = {10.1007/s00227-023-04383-1},
year = {2024},
abstract = {{The isotope ratios of zinc (66Zn/64Zn expressed as $\delta$66Zn), a vital nutrient, increasingly demonstrate trophic discrimination among vertebrates, making $\delta$66Zn a valuable dietary proxy for ecological, archaeological, and palaeontological studies. Given the novelty of the methodology, tissue-diet and tissue-tissue zinc isotope fractionation factors remain poorly understood and have so far only been studied in a few terrestrial mammals. Here, we investigate $\delta$66Zn compositions of enameloid, bone, and white muscle of seven artificially-fed pisciculture gilt-head seabreams (Sparus aurata) from offshore Israel, in comparison to the Zn isotope composition of their diet. In addition, we also analysed $\delta$66Zn values in the same tissues of wild-caught S. aurata, bluespotted seabream (Pagrus caeruleostictus) and grey triggerfish (Balistes capriscus) caught off the coast of Israel. We determine a tissue-diet $\delta$66Zn offset for Sparus aurata of {\textminus} 0.04 $\pm$ 0.09 {\textperthousand} (2SD) for bone, {\textminus} 0.29 $\pm$ 0.06 {\textperthousand} (2SD) for enameloid, and {\textminus} 0.45 $\pm$ 0.07 {\textperthousand} (2SD) for white muscle. Wild-caught fish have much higher among-individual $\delta$66Zn variability with values distinct from the pisciculture S. aurata, documenting a much more isotopically heterogeneous diet consumed by the wild individuals. Still, tissue{\textendash}tissue $\delta$66Zn differences in wild-caught individuals are close to those observed in the pisciculture ones with progressively lower $\delta$66Zn values in the order bone {\textgreater} enameloid {\textgreater} white muscle. Our results demonstrate predictable tissue-diet and tissue-tissue $\delta$66Zn differences among fish hard and soft tissues and can be applied to identify the $\delta$66Zn values of dietary input, thereby informing trophic (palaeo)ecological reconstructions. {\copyright} 2024, The Author(s).}},
journal = {{Marine Biology}},
volume = {171},
eid = {65},
}