Evidence of Atlantic bluefin tuna spawning in the Bay of Biscay,north-eastern Atlantic |
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Authors: | Jose M Rodriguez Carolina Johnstone Diego Lozano-Peral |
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Institution: | 1. Centro Oceanográfico de Gijón, Instituto Español de Oceanografía, Gijón, Spain;2. Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Fuengirola, Spain;3. Centro de Supercomputación y Bioinnovación, Universidad de Málaga, Málaga, Spain |
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Abstract: | The spawning grounds of the Atlantic bluefin tuna (Thunnus thynnus) are traditionally considered to be the Gulf of Mexico (Gulf of Mexico) and the Mediterranean Sea (Mediterranean Sea). However, for the western Atlantic, unequivocal evidence of bluefin spawning outside the Gulf of Mexico has been shown. In this study we present the first records of genetically confirmed bluefin larvae in the southern Bay of Biscay (eastern Atlantic). These findings provide evidence of bluefin spawning activity outside the Mediterranean Sea, in the north-eastern Atlantic. However, our results suggest that the bluefin spawning in the Bay of Biscay is a sporadic phenomenon. |
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Keywords: | Bay of Biscay north-eastern Atlantic spawning Thunnus thynnus |
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