Evolutionary Applications · 2025
Do European Seabass Larvae Grow Better in Their Natural Temperature Regime?
Larvae of the three genetically differentiated European sea bass populations were reared together under three thermal regimes representative of the Atlantic and the Western and Eastern Mediterranean. The Atlantic population grows more than the other two in every regime, not only its own.
- The question
- Do sea bass larvae grow better in the temperature regime of their population of origin?
- The approach
- Common-garden rearing under three seasonal thermal regimes; growth followed from 20 days post-hatch to 1.5 g, with each individual's origin found by parentage assignment using 96 SNPs.
- What the article brings
- Survival is higher in warmer regimes until 23 mm; the Atlantic population is longer than the Mediterranean ones in every regime and appears the most robust to temperature variation at the larval stage.
- The limits
- Whether this high growth reflects local adaptation to a relatively cold thermal regime remains to be established.
Figures from the article
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