Trace elements in stomach oil of Scopoli's shearwater (Calonectris diomedea) from Linosa's colony.

Valentina Cumbo, Francesco Giuseppe Galluzzo, Gaetano Cammilleri, Antonietta Mascetti, Giovanni Lo Cascio, Innocenzo Ezio Giangrosso, Andrea Pulvirenti, Salvatore Seminara, Vincenzo Ferrantelli

Marine pollution bulletin 2022 Jan

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Calonectris diomedea is a colonial Procellariiform breeding on Mediterranean islands. The stomach oil produced during chick rearing is a peculiar trait of this species. The composition of the stomach oil is likely to reflect the composition of the prey ingested and might reveal the contaminants uptake with prey becoming a possible tool for the marine pollution monitoring. We examined the concentration of 15 trace elements by ICP-MS and direct mercury analyser. The principal component analysis revealed a heterogeneous pattern of metal concentration, showing a significant separation between samples collected 20 and 70 days after hatching. The data obtained in this work give preliminary information on the feeding habits and breeding ecology of Linosa's colony of Scopoli's shearwater. The trace metals variability found suggest that the stomach oil may have a role as trophic markers to understand predator-prey relationships and to have evidence on the accumulation of pollutants in the latter. Copyright © 2021. Published by Elsevier Ltd.

Citation

Valentina Cumbo, Francesco Giuseppe Galluzzo, Gaetano Cammilleri, Antonietta Mascetti, Giovanni Lo Cascio, Innocenzo Ezio Giangrosso, Andrea Pulvirenti, Salvatore Seminara, Vincenzo Ferrantelli. Trace elements in stomach oil of Scopoli's shearwater (Calonectris diomedea) from Linosa's colony. Marine pollution bulletin. 2022 Jan;174:113242