A simulated marine heatwave impacts European sea bass sperm quantity, but not quality.

Autor: Geffroy B; MARBEC University of Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France., Sandoval-Vargas L; Nucleus of Research in Food Production, Faculty of Natural Resources, Catholic University of Temuco, Temuco, Chile., Boyer-Clavel M; Montpellier Ressources Imagerie, Biocampus, University of Montpellier, CNRS, Montpellier, France., Pérez-Atehortúa M; Nucleus of Research in Food Production, Faculty of Natural Resources, Catholic University of Temuco, Temuco, Chile., Lallement S; MARBEC University of Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France., Isler IV; Nucleus of Research in Food Production, Faculty of Natural Resources, Catholic University of Temuco, Temuco, Chile.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2023 Oct; Vol. 103 (4), pp. 784-789. Date of Electronic Publication: 2023 Jan 30.
DOI: 10.1111/jfb.15327
Abstrakt: Rapid environmental changes will be the major challenge that most biota will have to deal with in the near future. Extreme events, such as marine heatwaves, are becoming more frequent and could be spatially uniform at a regional scale for a relatively long period of time. To date, most research studies on heatwaves have focused on sessile organisms, but these extreme events can also impact mobile species. Here, a 3-week marine heatwave was simulated to investigate its effects on the male reproductive performance of a Mediterranean Sea emblematic species, the European sea bass Dicentrarchus labrax. Males from the control condition (c. 13°C) produced significantly more sperm than those exposed to a relatively warm thermal treatment (c. 16°C). Nonetheless, neither the percentage of motile spermatozoa nor most of the other sperm motility parameters were significantly affected by the rearing temperature over the whole period. Overall, the results of this study suggest only moderated effects of a potential winter heatwave on the reproductive performance of male European sea bass.
(© 2023 Fisheries Society of the British Isles.)
Databáze: MEDLINE
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