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Title: Behavioural Responses of Cerastoderma edule as Indicators of Potential Survival Strategies in the Face of Flooding Events
Authors: Verdelhos, Tiago 
Veríssimo, Helena 
Marques, João C. 
Anastácio, Pedro
Keywords: wild cockles; salinity changes; riverine flooding events; climate change; estuarine and coastal habitats
Issue Date: 2021
Project: FCT UIDB/04292/2020–MARE 
FCT - Post-Doc Grant SFRH/BPD/66838/2009 
MAR2020 project ReSEt-Restauro de Sapais Estuarinos com Vista à Sustentabilidade 
FCT and University of Coimbra through the Decree-law 57/2016 contracts of Tiago Verdelhos and Helena Veríssimo, subsidised by the European Social Fund and Portuguese Ministry of Science, Technology and Higher Education (MCTES) through the Human Potential Operational Programme (POPH); 
Serial title, monograph or event: Applied Sciences (Switzerland)
Volume: 11
Issue: 14
Abstract: According to climate change scenarios the incidence of extreme events, such as flooding, is expected to increase worldwide. In the current climate change context, understanding behavioural responses of marine species to such stressors is essential, especially for species of high ecological and economic interest such as bivalves, which can be quite useful for future management and conservation actions. In this study, a laboratory experiment using different salinity conditions was undertaken to assess potential behavioural responses of cockles (Cerastoderma edule), as a survival strategy facing low-salinity stress during riverine flood events. Results showed consistent patterns of burrowing/emergence of cockles facing salinity variation: with high salinities the individuals were observed buried in the sediment; when salinity decreased, organisms were observed to actively emerge, and when salinity was <10, cockles were found exposed at the sediment surface. These behavioural changes may be a strategy for the survival of this species in response to flooding: once at the sediment surface, hydrodynamics may transport organisms towards areas that are more suitable
ISSN: 2076-3417
DOI: 10.3390/app11146436
Rights: openAccess
Appears in Collections:I&D MARE - Artigos em Revistas Internacionais

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