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Article: The potential for ontogenetic vertical migration by larvae of bathyal echinoderms | Potentialites des larves d'echinodermis de la zone bathyale a effectuer des migrations ontogeniqeus verticales

TitleThe potential for ontogenetic vertical migration by larvae of bathyal echinoderms | Potentialites des larves d'echinodermis de la zone bathyale a effectuer des migrations ontogeniqeus verticales
Authors
Issue Date1996
Citation
Oceanologica Acta, 1996, v. 19 n. 3-4, p. 263-271 How to Cite?
AbstractPlanktotrophy is a relatively common developmental mode among bathyal and abyssal echinoderms, but the sources of food used by deep-sea planktotrophic larvae remain generally unknown. Very few deep-sea echinoderm larvae have been collected in plankton samples, so we do not know whether larvae migrate to the euphotic zone to feed or if they rely on bacteria or detritus at greater depths. We approached this question indirectly by investigating whether larvae of bathyal echinoids can tolerate the temperatures they would encounter in the euphotic zone and whether they possess sufficient energy stores to migrate to the euphotic zone without feeding. Twenty-four hour survival at 20 and 24 °C was always much lower than survival at colder temperatures, but there were species- specific and stage-specific differences in temperature tolerances. A numerical model of the energy consumed by migrating larvae predicted that larvae should be able to reach adequate phytoplankton concentrations before exhausting parental reserves, unless they swim very slowly and have very high metabolic rates. These results suggest that long vertical migrations are more likely to be limited by physiological tolerances than by energy stores.
Persistent Identifierhttp://hdl.handle.net/10722/180765
ISSN
2005 Impact Factor: 1.823
2006 SCImago Journal Rankings: 0.821
References

 

DC FieldValueLanguage
dc.contributor.authorYoung, CMen_US
dc.contributor.authorDevin, MGen_US
dc.contributor.authorJaeckle, WBen_US
dc.contributor.authorEkaratne, SUKen_US
dc.contributor.authorGeorge, SBen_US
dc.date.accessioned2013-01-28T01:43:06Z-
dc.date.available2013-01-28T01:43:06Z-
dc.date.issued1996en_US
dc.identifier.citationOceanologica Acta, 1996, v. 19 n. 3-4, p. 263-271en_US
dc.identifier.issn0399-1784en_US
dc.identifier.urihttp://hdl.handle.net/10722/180765-
dc.description.abstractPlanktotrophy is a relatively common developmental mode among bathyal and abyssal echinoderms, but the sources of food used by deep-sea planktotrophic larvae remain generally unknown. Very few deep-sea echinoderm larvae have been collected in plankton samples, so we do not know whether larvae migrate to the euphotic zone to feed or if they rely on bacteria or detritus at greater depths. We approached this question indirectly by investigating whether larvae of bathyal echinoids can tolerate the temperatures they would encounter in the euphotic zone and whether they possess sufficient energy stores to migrate to the euphotic zone without feeding. Twenty-four hour survival at 20 and 24 °C was always much lower than survival at colder temperatures, but there were species- specific and stage-specific differences in temperature tolerances. A numerical model of the energy consumed by migrating larvae predicted that larvae should be able to reach adequate phytoplankton concentrations before exhausting parental reserves, unless they swim very slowly and have very high metabolic rates. These results suggest that long vertical migrations are more likely to be limited by physiological tolerances than by energy stores.en_US
dc.languageengen_US
dc.relation.ispartofOceanologica Actaen_US
dc.titleThe potential for ontogenetic vertical migration by larvae of bathyal echinoderms | Potentialites des larves d'echinodermis de la zone bathyale a effectuer des migrations ontogeniqeus verticalesen_US
dc.typeArticleen_US
dc.identifier.emailEkaratne, SUK: suki1@hku.hken_US
dc.identifier.authorityEkaratne, SUK=rp01695en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0029763165en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0029763165&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume19en_US
dc.identifier.issue3-4en_US
dc.identifier.spage263en_US
dc.identifier.epage271en_US
dc.publisher.placeFranceen_US
dc.identifier.scopusauthoridYoung, CM=7403445953en_US
dc.identifier.scopusauthoridDevin, MG=15072775500en_US
dc.identifier.scopusauthoridJaeckle, WB=6602561014en_US
dc.identifier.scopusauthoridEkaratne, SUK=7801627869en_US
dc.identifier.scopusauthoridGeorge, SB=7401960741en_US

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