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Use of multielement stable isotope ratios to investigate ontogenetic movements of Micropogonias furnieri in a tropical Brazilian estuary 5
Pizzochero, Ana Carolina; Michel, Loic; Chenery, Simon R.; Mccarthy, Ian D.; Vianna, Marcelo; Malm, Olaf; Lepoint, Gilles; Das, Krishna; Dorneles, Paulo R..
The whitemouth croaker, Micropogonias furnieri, is a long-lived fish of high commercial importance in the Western Atlantic Ocean. Here, we used stable isotope ratios of carbon, sulfur and nitrogen and isotopic niche metrics (SIBER) to study feeding habits and track habitat use by whitemouth croakers in Guanabara Bay, an estuary in Rio de Janeiro state, Brazil. Our results highlighted size-related habitat segregation, with small juvenile (< 30 cm) fishes residing mostly inside estuaries, while large adult (> 60 cm) fishes feed mainly in Continental Shelf (CS) waters. Medium adult fishes (30-60 cm) appear to feed in multiple coastal and CS habitats. Moreover, their feeding ecology showed strong temporal differences, linked with seasonal and, to a...
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Ano: 2018 URL: https://archimer.ifremer.fr/doc/00408/51985/52644.pdf
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