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Control of gamete release in fucoid algae: sensing hydrodynamic conditions via carbon acquisition

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dc.contributor.authorPearson, G. A.
dc.contributor.authorSerrão, Ester
dc.contributor.authorBrawley, S. H.
dc.date.accessioned2014-05-28T15:55:10Z
dc.date.available2014-05-28T15:55:10Z
dc.date.issued1998
dc.date.updated2014-05-21T14:19:25Z
dc.description.abstractWe investigated the environmental factors providing signals for gamete release in fucoid algae, with a particular focus on the inhibitory effect of water motion. The release of gametes by Fucus distichus occurred in still water under high light and was associated with the depletion of dissolved inorganic carbon (DIC) in tide pools isolated from the ocean during daytime low tides. Diurnal patterns of gamete release that lasted for 2-3 d, as in natural populations, were found in receptacles cultured in a 12 h light: 12 h dark photoperiod under calm conditions or in a simulated tidal regime. Constant light disrupted the diurnal component of release, however, suggesting that an endogenous circadian periodicity was absent. The effects of increased [DIC] on cultured receptacles under calm conditions were similar to the inhibitory effects of high water motion; both conditions reduced release in several species from both tide pool and intertidal habitats. Bicarbonate concentration, rather than carbon dioxide, or carbonate, was shown to be the component of the DIC system most closely correlated (inversely) with gamete release in the intertidal fucoid Pelvetia compressa. The hypothesis that gamete release is triggered by DIC depletion in the unstirred boundary layer during periods of low water motion in the light was further supported by experiments with P. compressa. These showed that gamete release was not inhibited by high water motion when DIC was absent. In the same experiments, high water motion inhibited release at 2 and 20 mmol/L DIC, confirming that the sensitivity of gamete release to water motion is DIC dependent. The ability of fucoid algae to couple physiological processes (e.g., photosynthesis) with life history events (gamete release) allows external fertilization to occur under favorable hydrodynamic conditions, and may contribute greatly to reproductive success in organisms inhabiting periodically turbulent environments.por
dc.identifier.citationPearson, G.A.; Serrão, E.A.; Brawley, S.H.Control of gamete release in fucoid algae: Sensing hydrodynamic conditions via carbon acquisition, Ecology, 79, 5, 1725-17, 1998.por
dc.identifier.issn0012-9658
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4113
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherEcological Society of Americapor
dc.relation.publisherversionhttp://www.jstor.org/stable/176791por
dc.subjectExternal fertilization successpor
dc.subjectFuccoid algaepor
dc.subjectGamete release (spawning)por
dc.subjectHydrodynamic conditionspor
dc.subjectInorganic carbonpor
dc.subjectIntertidalpor
dc.subjectReproductive ecologypor
dc.titleControl of gamete release in fucoid algae: sensing hydrodynamic conditions via carbon acquisitionpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1739por
oaire.citation.issue5
oaire.citation.startPage1725por
oaire.citation.titleEcologypor
oaire.citation.volume79por
person.familyNamePearson
person.familyNameSerrao
person.givenNameGareth Anthony
person.givenNameEster A.
person.identifier113536
person.identifierC-6686-2012
person.identifier.ciencia-id3315-9919-1A52
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0002-0768-464X
person.identifier.orcid0000-0003-1316-658X
person.identifier.ridJ-3911-2013
person.identifier.scopus-author-id55916875600
person.identifier.scopus-author-id7004093604
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication0a10c448-c7f5-4c3b-9488-3917c707e35e
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery45ccfe90-155c-4d6f-9e86-8f0fd064005f

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