Effect of temperature and CO2 concentration on the morphogenesis of sagittal otoliths in Atlantic herring (Clupea harengus) larvae

Type Article
Date 2023-01
Language English
Author(s) Mahé KeligORCID1, Joly Lea1, 2, Telliez Solene1, Zambonino Infante Jose-LuisORCID2, Meunier Cédric Léo3, Mackenzie KirsteenORCID1, Giraldo CarolinaORCID1
Affiliation(s) 1 : Ifremer, Fisheries laboratory, Channel and North Sea Fisheries Research Unit, Boulogne-sur-mer, France
2 : Ifremer, Univ Brest, CNRS, IRD, LEMAR, Plouzané, France
3 : Helmholtz-Zentrum für Polar- und Meeresforschung, Alfred-Wegener-Institut, Helgoland, Germany
Source Journal Of Experimental Marine Biology And Ecology (0022-0981) (Elsevier BV), 2023-01 , Vol. 558 , P. 151829 (7p.)
DOI 10.1016/j.jembe.2022.151829
WOS© Times Cited 1
Keyword(s) Otolith shape, Otolith area, Temperature effect, Ocean acidification, Elliptic Fourier descriptors, Directional asymmetry

Otoliths are very useful biomarkers especially for fish growth. Climate change with the associated global changes in warming and acidification could affect the calcification and the shape of otoliths during the crucial larval period in teleost fish. To evaluate this predicted combined effect of temperature and CO2, Atlantic herring (Clupea harengus) embryos and larvae were reared from hatching to respectively 47 and 60 days post-hatching (dph), under present day conditions and a scenario predicted for the year 2100 (IPCC RCP8.5). Otolith morphogenesis was tracked by analyzing area and normalized Elliptical Fourier coefficients. We found that otolith area for fish of similar size increased under the predicted 2100 climate change scenario compared to the present day. Climate change does not, however, seem to directly affect the otolith shape. Finally, the onset of otolith morphogenesis is hardwired, but the relationship between otolith and fish size is environment-dependent.

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Mahé Kelig, Joly Lea, Telliez Solene, Zambonino Infante Jose-Luis, Meunier Cédric Léo, Mackenzie Kirsteen, Giraldo Carolina (2023). Effect of temperature and CO2 concentration on the morphogenesis of sagittal otoliths in Atlantic herring (Clupea harengus) larvae. Journal Of Experimental Marine Biology And Ecology, 558, 151829 (7p.). Publisher's official version : https://doi.org/10.1016/j.jembe.2022.151829 , Open Access version : https://archimer.ifremer.fr/doc/00804/91583/