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Open AccessArticle

Otolith Fingerprints and Tissue Stable Isotope Information Enable Allocation of Juvenile Fishes to Different Nursery Areas

1
Laboratory of Ichthyology and Coastal Fisheries, Institute of Oceanography and Fisheries, Šetalište I. Meštovića 63, 21000 Split, Croatia
2
Laboratory of Fisheries Science and Management of Pelagic and Demersal Resources, Institute of Oceanography and Fisheries, Šetalište I. Meštovića 63, 21000 Split, Croatia
3
Laboratory of Chemical Oceanography and Sedimentology of the Sea, Institute of Oceanography and Fisheries, Šetalište I. Meštovića 63, 21000 Split, Croatia
4
Institute for Geosciences, Johannes Gutenberg University, SaarstraBe 21, 55131 Mainz, Germany
5
Department of Bioscience, Ny Munkegade 114, 1540 Building, Aarhus University, 8000 Aarhus, Denmark
*
Author to whom correspondence should be addressed.
Academic Editor: George Kontakiotis
Water 2021, 13(9), 1293; https://doi.org/10.3390/w13091293
Received: 8 April 2021 / Revised: 30 April 2021 / Accepted: 1 May 2021 / Published: 4 May 2021
Integrated otolith chemistry and muscle tissue stable isotope analyses were performed to allocate juvenile Diplodus puntazzo and Diplodus vulgaris to nurseries in the Adriatic Sea. Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) was used to quantify the concentrations of chemical elements in the otoliths. Fish muscle samples were analysed for δ13C and δ15N. In general, Ba/Ca and Sr/Ca ratios and isotopes varied between sites and species. Values of δ13C and δ15N were significantly different between species and sites. Multivariate analysis detected a significant difference in the element signature between species while there was no evidence for a significant interaction for sites. A clear pattern across the four groups of interest, D. puntazzo_Estuary > D. vulgaris_Estuary > D. puntazzo_Coastal > D. vulgaris_Coastal, following decreases in δ13C, and increases in δ15N were found. It seems that these species are feeding on the same local food web within more productive estuarine site while at costal site, feeding segregation among investigated species is evident. Both species were re-allocated correctly to the estuarine waters based on the otolith chemistry and stable isotopes information and higher value of δ15N. Combining otolith chemistry with tissue isotope ratios of juvenile fish provided complementary information on nursery habitat use at different spatial scales and elucidated ecological and environmental linkages. View Full-Text
Keywords: Diplodus vulgaris; Diplodus puntazzo; geochemistry; trophic relation; essential habitats; Adriatic Sea Diplodus vulgaris; Diplodus puntazzo; geochemistry; trophic relation; essential habitats; Adriatic Sea
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MDPI and ACS Style

Vrdoljak, D.; Matić-Skoko, S.; Peharda, M.; Uvanović, H.; Markulin, K.; Mertz-Kraus, R.; Grønkjær, P. Otolith Fingerprints and Tissue Stable Isotope Information Enable Allocation of Juvenile Fishes to Different Nursery Areas. Water 2021, 13, 1293. https://doi.org/10.3390/w13091293

AMA Style

Vrdoljak D, Matić-Skoko S, Peharda M, Uvanović H, Markulin K, Mertz-Kraus R, Grønkjær P. Otolith Fingerprints and Tissue Stable Isotope Information Enable Allocation of Juvenile Fishes to Different Nursery Areas. Water. 2021; 13(9):1293. https://doi.org/10.3390/w13091293

Chicago/Turabian Style

Vrdoljak, Dario; Matić-Skoko, Sanja; Peharda, Melita; Uvanović, Hana; Markulin, Krešimir; Mertz-Kraus, Regina; Grønkjær, Peter. 2021. "Otolith Fingerprints and Tissue Stable Isotope Information Enable Allocation of Juvenile Fishes to Different Nursery Areas" Water 13, no. 9: 1293. https://doi.org/10.3390/w13091293

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