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Assessing the physiological responses of the gastropod Crepidula fornicata to predicted ocean acidification and warming

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Noisette, Fanny et Bordeyne, François et Davoult, Dominique et Martin, Sophie (2016). Assessing the physiological responses of the gastropod Crepidula fornicata to predicted ocean acidification and warming. Limnology and Oceanography, 61 (2). p. 430-444.

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Résumé

Organisms inhabiting coastal waters naturally experience diel and seasonal physico‐chemical variations. According to various assumptions, coastal species are either considered to be highly tolerant to environmental changes or, conversely, living at the thresholds of their physiological performance. Therefore, these species are either more resistant or more sensitive, respectively, to ocean acidification and warming. Here, we focused on Crepidula fornicata, an invasive gastropod that colonized bays and estuaries on northwestern European coasts during the 20th century. Small (<3 cm in length) and large (>4.5 cm in length), sexually mature individuals of C. fornicata were raised for 6 months in three different pCO2 conditions (390 μatm, 750 μatm, and 1400 μatm) at four successive temperature levels (10°C, 13°C, 16°C, and 19°C). At each temperature level and in each pCO2 condition, we assessed the physiological rates of respiration, ammonia excretion, filtration and calcification on small and large individuals. Results show that, in general, temperature positively influenced respiration, excretion and filtration rates in both small and large individuals. Conversely, increasing pCO2 negatively affected calcification rates, leading to net dissolution in the most drastic pCO2 condition (1400 μatm) but did not affect the other physiological rates. Overall, our results indicate that C. fornicata can tolerate ocean acidification, particularly in the intermediate pCO2 scenario. Moreover, in this eurythermal species, moderate warming may play a buffering role in the future responses of organisms to ocean acidification. -- Keywords : Calcification ; Coastal system ; Invasive species ; Metabolism ; Mollusk ; pCO2 ; Temperature.

Type de document : Article
Validation par les pairs : Oui
Information complémentaire : Ceci est la version révisée par les pairs de l'article suivant: Noisette, F., Bordeyne, F., Davoult, D. and Martin, S. (2016), Assessing the physiological responses of the gastropod Crepidula fornicata to predicted ocean acidification and warming. Limnol. Oceanogr., 61: 430-444., dont la version finale est disponible ici: https://doi.org/10.1002/lno.10225. Cet article peut être utilisé sans visée commerciale, en accord avec les termes et conditions d'utillisation des articles auto-archivés de Wiley. This is the peer reviewed version of the following article: Noisette, F., Bordeyne, F., Davoult, D. and Martin, S. (2016), Assessing the physiological responses of the gastropod Crepidula fornicata to predicted ocean acidification and warming. Limnol. Oceanogr., 61: 430-444 , which has been published in final form at https://doi.org/10.1002/lno.10225. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions."
Départements et unités départementales : Institut des sciences de la mer de Rimouski (ISMER)
Déposé par : DIUQAR UQAR
Date de dépôt : 09 mars 2020 17:23
Dernière modification : 09 mars 2020 17:23
URI : http://semaphore.uqar.ca/id/eprint/1592

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