Repository logo
 
Publication

Effects of sea-water acidification on fertilization and larval development of the oyster Crassostrea gigas

2013Journal article Restricted access
Simple item page
dc.contributor.authorBarros, P.
dc.contributor.authorSobral, P.
dc.contributor.authorRange, Pedro
dc.contributor.authorChícharo, Luís
dc.contributor.authorMatias, Domitília
dc.date.accessioned2014-09-22T13:30:07Z
dc.date.available2014-09-22T13:30:07Z
dc.date.issued2013
dc.date.updated2014-09-19T09:56:36Z
dc.description.abstractOceans face a serious change to their natural biogeochemical cycle due to the rapid absorption of CO2 generated by human activities. Ocean acidification is the common term used to describe the decrease of seawater pH caused by the absorption of atmospheric CO2. To evaluate the effects of ocean acidification, we focused on the larval stage of bivalves, which produce a fragile calcareous skeletal structure, very sensitive to changes in seawater chemistry. In this context, we investigated sperm motility, fertilization rate and larval viability (survival, growth and abnormalities) of the Pacific oyster, Crassostrea gigas, a commercially important bivalve, in a controlled CO2 perturbation experiment. The carbonate chemistry of seawater was manipulated by diffusing pure CO2, to attain two reduced pH levels (ΔpH=−0.4 and ΔpH=−0.7) which were compared to unmanipulated seawater. The results show high sensitivity of C. gigas veliger larvae to low values of pH, as reflected by a decrease in survival and growth rates, as well as an increased frequency of prodissoconch abnormalities and protruding mantle. Moreover, results also show that sperm motility, fertilization rate, and hatching success, were negatively influenced by acidification. The exposure to ΔpH=−0.7 had a higher impact on the fertilization and larval viability than ΔpH=−0.4. The results suggest that the reproductive success and the biological mechanisms for calcification may be prematurely interrupted and disturbed when C. gigas veliger larvae are exposed to an acidified environment which may reduce their viability and compromise settlement and future abundances of this species.por
dc.identifier.citationBarros, P.; Sobral, P.; Range, Pedro; Chícharo, Luís; Matias, Domitília. Effects of sea-water acidification on fertilization and larval development of the oyster Crassostrea gigas, Journal of Experimental Marine Biology and Ecology, 440, n/a, 200-206, 2013.por
dc.identifier.issn0022-0981
dc.identifier.otherAUT: LCH00360;
dc.identifier.urihttp://hdl.handle.net/10400.1/5042
dc.language.isoporpor
dc.peerreviewedyespor
dc.subjectBivalviapor
dc.subjectJapanese oysterpor
dc.subjectCarbon dioxidepor
dc.subjectOstreidapor
dc.subjectClimate changepor
dc.subjectCoastal oceanpor
dc.titleEffects of sea-water acidification on fertilization and larval development of the oyster Crassostrea gigaspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage206por
oaire.citation.startPage200por
oaire.citation.titleJournal of Experimental Marine Biology and Ecologypor
oaire.citation.volume440por
person.familyNameRange
person.familyNameChicharo
person.givenNamePedro
person.givenNameLuis
person.identifier.ciencia-id6716-EE1C-B995
person.identifier.orcid0000-0002-9269-2416
person.identifier.orcid0000-0002-4933-2300
person.identifier.ridC-5558-2008
person.identifier.scopus-author-id57200299298
person.identifier.scopus-author-id6602881426
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication4dc74a3a-fe4a-4b38-a215-c44226a438dc
relation.isAuthorOfPublicationd3ff8510-3be1-4a6a-abdd-eb671a819aef
relation.isAuthorOfPublication.latestForDiscovery4dc74a3a-fe4a-4b38-a215-c44226a438dc

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Effects of sea-water acidification on fertilization and larval development of the oyster Crassostrea gigas.pdf
Size:
693.23 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.61 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIM2-Artigos (em revistas ou actas indexadas)