The effects of elevated CO2 on shell properties and susceptibility to predation in mussels Mytilus edulis.
Mar Environ Res
; 139: 162-168, 2018 Aug.
Article
em En
| MEDLINE
| ID: mdl-29803323
ABSTRACT
For many species, ocean acidification (OA) is having negative physiological consequences on their fitness and resilience to environmental change, but less is known about the ecosystem effects of these changes. Here, we assess how OA conditions predicted for 2100 affects the biological functioning of an important habitat-forming species Mytilus edulis and its susceptibility to predation by a key predator, the gastropod Nucella lapillus. Change in three physiological parameters in Mytilus were assessed (1) shell thickness and cross-sectional surface area, (2) body volume and (3) feeding rate, as well as susceptibility to predation by N. lapillus. Shell thickness and cross-section area, body volume and feeding rate of Mytilus all reduced under OA conditions indicating compromised fitness. Predation risk increased by â¼26% under OA, suggesting increased susceptibility of mussels to predation and/or altered predator foraging behaviour. Notably, predation of large Mytilus - that were largely free from predation under control conditions - increased by more than 8x under OA, suggesting that body size was no longer a refuge. Our results suggest OA will impact upon ecosystem structure and functioning and the continued provision of ecosystem services associated with Mytilus reefs and the communities associated with them.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Dióxido de Carbono
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Mytilus edulis
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Exoesqueleto
Tipo de estudo:
Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article