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Reproductive trade-offs in a temperate reef fish under high pCO2 levels

2018-02-27Journal article Restricted access
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dc.contributor.authorFaria, Ana Margarida
dc.contributor.authorLopes, Ana F.
dc.contributor.authorSilva, Cátia Sofia Esteves da
dc.contributor.authorNovais, Sara C.
dc.contributor.authorLemos, Marco F. L.
dc.contributor.authorGonçalves, Emanuel João
dc.date.accessioned2018-03-05T19:15:49Z
dc.date.available2018-03-05T19:15:49Z
dc.date.issued2018-02-27
dc.description.abstractFishes are currently facing novel types of anthropogenic stressors that have never experienced in their evolutionary history, such as ocean acidification. Under these stressful conditions, energetically costly processes, such as reproduction, may be sacrificed for increased chances of survival. This trade-off does not only affect the organism itself but may result in reduced offspring fitness. In the present study, the effects of exposure to high pCO2 levels were tested on the reproductive performance of a temperate species, the two-spotted goby, Gobiusculus flavescens. Breeding pairs were kept under control (∼600 μatm, pH∼ 8.05) and high pCO2 levels (∼2300 μatm, pH∼ 7.60) conditions for a 4-month period. Additionally, oxidative stress and energy metabolism- related biomarkers were measured. Results suggest that reproductive activity is stimulated under high pCO2 levels. Parental pairs in the simulated ocean acidification conditions exhibited increased reproductive output, with 50% more clutches and 44% more eggs per clutch than pairs under control conditions. However, there was an apparent trade-off between offspring number and size, as larvae of parental pairs under high pCO2 levels hatched significantly smaller, suggesting differences in parental provisioning, which could be related to the fact that these females produce more eggs. Moreover, results support the hypothesis of different energy allocation strategies used by females under high pCO2 conditions. These changes might, ultimately, affect individual fitness and population replenishment.pt_PT
dc.description.versioninfo:eu-repo/semantics/draftpt_PT
dc.identifier.citationMarine Environmental Research, 2018 Doi:10.1016/j.marenvres.2018.02.027pt_PT
dc.identifier.doi10.1016/j.marenvres.2018.02.027pt_PT
dc.identifier.issn01411136
dc.identifier.urihttp://hdl.handle.net/10400.12/6282
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier BVpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectBiomarkerpt_PT
dc.subjectEnergy metabolismpt_PT
dc.subjectFishpt_PT
dc.subjectGobiusculus flavescenspt_PT
dc.subjectOcean acidificationpt_PT
dc.subjectReproductive successpt_PT
dc.titleReproductive trade-offs in a temperate reef fish under high pCO2 levelspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNetherlandspt_PT
oaire.citation.endPage8pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMarine Environmental Researchpt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT

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