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Effects of tidal emersion and marine heatwaves on cuttlefish early ontogeny

Coelho, João and Courtot, Mélanie and Otjacques, Eve and Lopes, Vanessa M. and Paula, José Ricardo and Repolho, Tiago and Diniz, Mário and Rosa, Rui (2023) Effects of tidal emersion and marine heatwaves on cuttlefish early ontogeny. Marine Biology, 170 (1). Art. No. 3. ISSN 0025-3162. doi:10.1007/s00227-022-04150-8.

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Anthropogenic climate change has increased the frequency and intensity of extreme weather events, such as marine heatwaves (MHW). They exert a strong influence over the structure and functioning of marine ecosystems, considering temperature is one of the most critical environmental factors affecting marine life. Additionally, intertidal habitats are ecologically challenging ecosystems, and inhabiting organisms need to possess the necessary mechanisms to adapt to the periodic fluctuations in physical characteristics across tidal cycles. To assess the effect of simulated MHWs (categories I and IV) and low tide conditions (emersion) on the early development of the common cuttlefish Sepia officinalis, the development time and hatching success were evaluated, as well as the antioxidant enzymatic machinery, lipid peroxidation, HSP70 and total ubiquitin concentrations. Embryonic development time decreased significantly with temperature, but tidal emersion held no significant impact on development time or hatching success. Superoxide dismutase activity levels were significantly increased with temperature but lowered under emersion conditions. Glutathione-S-transferase activity significantly increased with temperature, while glutathione peroxidase activity was significantly enhanced under emersion. Catalase activity, lipid peroxidation, HSP70 content and total ubiquitin content were not affected by any of the treatments. These findings suggest that while development time is greatly conditioned by temperature, S. officinalis embryos are remarkably resilient to emersion conditions. Moreover, the simulated marine heatwaves did not elicit any sub-lethal oxidative stress-related effects, suggesting that such temperatures were still within the optimum range of the cuttlefish thermal window of aerobic performance.

Item Type:Article
Related URLs:
URLURL TypeDescription
Courtot, Mélanie0000-0002-9551-6370
Otjacques, Eve0000-0002-0880-9360
Lopes, Vanessa M.0000-0001-8276-4490
Paula, José Ricardo0000-0002-1729-7256
Repolho, Tiago0000-0002-1048-8009
Rosa, Rui0000-0003-2801-5178
Additional Information:This study was funded by the project VALPRAD (MAR-01.04.02-FEAMP-0007) within the framework of MAR2020 program. The authors also acknowledge funding from Fundação para a Ciência e Tecnologia (FCT) under the strategic project UIDB/04292/2020 granted to MARE, project LA/P/0069/2020 granted to the Associate Laboratory ARNET, project UIDP/04378/2020 and UIDB/04378/2020 of the Research Unit on Applied Molecular Biosciences—UCIBIO and the project LA/P/0140/2020 of the Associate Laboratory Institute for Health and Bioeconomy—i4HBm, and the researcher contract (DL57/2016/CP1479/CT0023) granted to TR.
Funding AgencyGrant Number
MAR2020 ProgramMAR-01.04.02-FEAMP-0007
Fundação para a Ciência e a Tecnologia (FCT)UIDB/04292/2020
Fundação para a Ciência e a Tecnologia (FCT)LA/P/0069/2020
Fundação para a Ciência e a Tecnologia (FCT)UIDP/04378/2020
Fundação para a Ciência e a Tecnologia (FCT)UIDB/04378/2020
Fundação para a Ciência e a Tecnologia (FCT)LA/P/0140/2020
Fundação para a Ciência e a Tecnologia (FCT)DL57/2016/CP1479/CT0023
Issue or Number:1
Record Number:CaltechAUTHORS:20221222-396212100.2
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118606
Deposited By: Research Services Depository
Deposited On:25 Jan 2023 17:59
Last Modified:25 Jan 2023 17:59

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