Osmoregulatory and demographic responses to salinity of the exotic cladoceran <i>Daphnia exilis</i>

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dc.contributor.authorHeine-Fuster, Inger
dc.contributor.authorVega-Retter, Caren
dc.contributor.authorSabat, Pablo
dc.contributor.authorRamos-Jiliberto, Rodrigo
dc.date.accessioned2025-01-21T00:04:42Z
dc.date.available2025-01-21T00:04:42Z
dc.date.issued2010
dc.description.abstractDaphnia exilis is a halophylic species that was recently found in Chile, distant from its natural range. In this study, we analyze the osmoregulatory and life-history responses to salinity exhibited by Daphnia exilis, as a first step towards understanding the ecology of this exotic species whose invasion potential has been related to its ability to tolerate saline environments. A set of laboratory experiments were carried out, in which we exposed organisms to a salinity gradient, and measured internal and environmental osmolality, assessed the effect of acclimation time and measured life-history traits that were used to perform a demographic retrospective analysis. Our results showed that (i) D. exilis exhibited a hyper-osmoconformer response, (ii) acclimation time did not exert effects on the osmoregulatory response, (iii) salinity up to 6 g L-1 did not alter the population growth rate, (iv) at 8 g L-1 population growth rate declined, mainly due to a delayed age at maturity and reduced fertility. Based on this information, we suggest that the responses to salinity exhibited by the exotic D. exilis confer an advantage over its natural enemies and may facilitate colonization through exploiting disturbed places as chemical refuges.
dc.fuente.origenWOS
dc.identifier.doi10.1093/plankt/fbq055
dc.identifier.eissn1464-3774
dc.identifier.issn0142-7873
dc.identifier.urihttps://doi.org/10.1093/plankt/fbq055
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95517
dc.identifier.wosidWOS:000281536000005
dc.issue.numero10
dc.language.isoen
dc.pagina.final1411
dc.pagina.inicio1405
dc.revistaJournal of plankton research
dc.rightsacceso restringido
dc.subjectosmolality
dc.subjectLTRE
dc.subjectzooplankton
dc.subjectinvasion
dc.subjectDaphnia exilis
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.ods06 Clean Water and Sanitation
dc.subject.ods13 Climate Action
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa06 Agua limpia y saneamiento
dc.subject.odspa13 Acción por el clima
dc.titleOsmoregulatory and demographic responses to salinity of the exotic cladoceran <i>Daphnia exilis</i>
dc.typeartículo
dc.volumen32
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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