Upwelling affects food availability, impacting the morphological and molecular conditions of the herviborous limpet <i>Fissurella crassa</i> (Mollusca: Archeogastropoda)

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dc.contributor.authorPulgar, Jose
dc.contributor.authorAldana, Marcela
dc.contributor.authorAlvarez, Marco
dc.contributor.authorGarcia-Huidobro, Roberto
dc.contributor.authorMolina, Pilar
dc.contributor.authorPablo Morales, Juan
dc.contributor.authorPulgar, Victor Manuel
dc.date.accessioned2025-01-24T00:04:11Z
dc.date.available2025-01-24T00:04:11Z
dc.date.issued2013
dc.description.abstractOceanographical processes, such as upwelling, induce variations in nutrient availability in marine ecosystems, and evidence indicates that nutrient input can strongly influence the physiological activities, structure, and dynamics of marine communities. Intertidal organisms have long been considered ideal study units in which to quantify the relationship of physical variations and differential energy allocations in specimens that undergo environmental variations, such as observed with nutrient availability. In habitats with differential nutrient input (upwelling versus non-upwelling), both food availability (algae abundance) and seasonal gonadal and foot weight variations were determined in the keyhole limpet Fissurella crassa. Gonadal weight is used as a measure of reproduction allocation whereas foot weight is an indirect indicator of energy allocation towards survival. RNA: DNA ratio in limpets was used as an indicator of biosynthetic capability. Our results indicate that, in general, algae abundance, muscular foot weight, and gonadal weight were higher in upwelling sites during all seasons studied. The same result was found for RNA: DNA ratios. Energetic allocation in animals that inhabit intertidal upwelling habitats supported a constant allocation towards reproduction and soft tissues. In contrast, animals that inhabit non-upwelling habitats showed important energetic restrictions associated with higher water temperature and lower food availability. Our results clearly show that in the keyhole limpet F. crassa food availability is a more important determinant of an individual's condition than a physical variation such as environment temperature.
dc.fuente.origenWOS
dc.identifier.doi10.1017/S0025315412001415
dc.identifier.eissn1469-7769
dc.identifier.issn0025-3154
dc.identifier.urihttps://doi.org/10.1017/S0025315412001415
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101789
dc.identifier.wosidWOS:000317238100025
dc.issue.numero3
dc.language.isoen
dc.pagina.final802
dc.pagina.inicio797
dc.revistaJournal of the marine biological association of the united kingdom
dc.rightsacceso restringido
dc.subjectRNA: DNA ratio
dc.subjectlife histories
dc.subjectfood availability
dc.subjectkeyhole limpet
dc.subjectupwelling
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleUpwelling affects food availability, impacting the morphological and molecular conditions of the herviborous limpet <i>Fissurella crassa</i> (Mollusca: Archeogastropoda)
dc.typeartículo
dc.volumen93
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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