Behavioural traits of competent <i>Concholepas concholepas</i> (loco) larvae

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dc.contributor.authorManriquez, Patricio H.
dc.contributor.authorCarlos Castilla, Juan
dc.date.accessioned2025-01-21T00:01:15Z
dc.date.available2025-01-21T00:01:15Z
dc.date.issued2011
dc.description.abstractSwimming activity of competent Concholepas concholepas (Bruguiere, 1789) larvae, under different photoperiod, water turbulence and settlement cues were investigated in laboratory experiments. At night, larvae mainly swam to the water surface and then sank passively to the bottom. During the day, regardless of the photoperiod, larvae mainly stayed on the bottom, occasionally exhibiting upward movements. During the swimming period, larvae displayed the capacity to adhere to floating substrata through several mechanisms, including the secretion of a long and sticky mucous thread, air bubble capture or taking advantage of the water tension. The presence of C. concholepas prey, such as the mussel Semimytilus algosus and the chthamaloid barnacle Notochthamalus scabrosus, significantly influenced the swimming activity of competent C. concholepas larvae, inducing them to stay close to the bottom where prey were present. C. concholepas prey also triggered the initiation of larvae crawling, a characteristic of the early benthic life of C. concholepas. Although our laboratory experiments are proxies of nature, they are in good agreement with field observations in shallow nearshore areas (< ca. 0.5 km from shore) that recorded higher abundances of competent C. concholepas larvae (which are often associated with floating substrata) captured by surface planktonic tows during the night rather than day. Similarly, competent C. concholepas larvae abundances were higher in tows through inner nearshore foam slicks than in non-slick areas. The results suggest that the presence of endogenous swimming behaviour in these larvae may be a key factor enhancing adherence to floating substrata. The laboratory discovery of vertical buoyancy provides new information leading to a better understanding of the distribution and abundance patterns of these larvae in inner nearshore waters.
dc.fuente.origenWOS
dc.identifier.doi10.3354/meps09153
dc.identifier.eissn1616-1599
dc.identifier.issn0171-8630
dc.identifier.urihttps://doi.org/10.3354/meps09153
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95380
dc.identifier.wosidWOS:000291826600018
dc.language.isoen
dc.pagina.final221
dc.pagina.inicio207
dc.revistaMarine ecology progress series
dc.rightsacceso restringido
dc.subjectChile
dc.subjectConcholepas concholepas
dc.subjectLarval distribution and transport
dc.subjectSwimming behaviour
dc.subjectRafting
dc.subjectMucous thread
dc.subjectStickiness
dc.subjectFoam slicks
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.titleBehavioural traits of competent <i>Concholepas concholepas</i> (loco) larvae
dc.typeartículo
dc.volumen430
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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