Inter-population thermal variability and physiological response in the intertidal fish <i>Scartichthys viridis</i> (Blenniidae)

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dc.contributor.authorPulgar, Jose M.
dc.contributor.authorBozinovicz, Francisco
dc.contributor.authorOjedaz, F. Patricio
dc.date.accessioned2025-01-21T01:05:17Z
dc.date.available2025-01-21T01:05:17Z
dc.date.issued2007
dc.description.abstractDetermining habitat conditions that generate individual physiological variability represents key basic knowledge to understand the direction of animal's responses to habitat change. The coastal fish Scartichthys viridis inhabits low intertidal pools along the Chilean coast. Because seawater in the low intertidal is renewed during every tidal cycle, this zone is characterized by a low thermal variation and abundant food within and between localities. We evaluated whether seawater thermal conditions and food availability of low intertidal pools registered in three localities of Chilean coast are sufficient to generate physiological and energetic differences in individuals of S. viridis captured from three geographic separate populations spanning approximately 1,200 km. Southern fishes acclimatized to 25 degrees C showed higher metabolic rates than those from other localities and thermal treatments. On the other hand, southern fishes in natural conditions showed higher condition factor than northern fishes. This evidence is sufficient to indicate that slight latitudinal differences in tidepool seawater temperature associated to differential food availability induced an energetic constraint in this species. Moreover, southern population of S. viridis may suffer important effects on energetic allocation if seawater temperature increases slightly, with repercussions on its geographic distribution in southern Pacific Ocean.
dc.fechaingreso.objetodigital2025-06-15
dc.fuente.origenWOS
dc.identifier.eissn0717-6317
dc.identifier.issn0716-078X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95880
dc.identifier.urihttp://dx.doi.org/10.4067/S0716-078X2007000400005
dc.identifier.wosidWOS:000252317900005
dc.issue.numeroNo. 4
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final446
dc.pagina.inicio439
dc.revistaRevista chilena de historia natural
dc.rightsacceso abierto
dc.subjectintertidal fish
dc.subjectphysiological compensation
dc.subjecttidepool
dc.subjectScartichthys viridis
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.titleInter-population thermal variability and physiological response in the intertidal fish <i>Scartichthys viridis</i> (Blenniidae)
dc.title.alternativeVariabilidad térmica intrapoblacional y respuesta fisiológica en el pez intermareal Scartichthys viridis (Blenniidae)
dc.typeartículo
dc.volumenVol. 80
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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