Cross-examining the influence of upwelling and seaweed quality on herbivores' feeding behavior and growth

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dc.contributor.authorSepulveda, Felipe
dc.contributor.authorQuijon, Pedro A.
dc.contributor.authorQuintanilla-Ahumada, Diego
dc.contributor.authorVargas, Juan
dc.contributor.authorAldana, Marcela
dc.contributor.authorFernandez, Melissa
dc.contributor.authorVaras, Oscar
dc.contributor.authorZapata, Javier
dc.contributor.authorPulgar, Jose
dc.contributor.authorDuarte, Cristian
dc.date.accessioned2025-01-20T17:10:47Z
dc.date.available2025-01-20T17:10:47Z
dc.date.issued2024
dc.description.abstractAt the regional scale, upwelling conditions are known to influence ecosystems and communities and their primary and secondary productivity. However, the influence of upwelling on local herbivore-algae interactions is less well understood. We address this question by cross-examining herbivores and seaweeds from sites associated with upwelling and downwelling conditions along the Humboldt Current System. Specifically, we quantified the feeding and benefits attained by the black sea urchin (Tetrapygus niger) and the black sea snail (Tegula atra) while consuming a widespread kelp species (Lessonia spicata). We hypothesized that food quality drives herbivores' preference, consumption, and growth rates, regardless of the origin or "prior" conditions of the consumers. Laboratory trials measured algal consumption rates with (preference) and without a choice, and consumer's growth rates, to assess the influence of food quality (algae from upwelling vs downwelling sites) and the site of origin of the consumers. Our results showed that algal quality was a prevailing factor for both herbivores: they chose, consumed more, and grew faster on high quality (upwelling) algae. By comparison, the origin of the consumer was only significant for sea snails: those coming from an upwelling site, consumed significantly more and grew faster than those from downwelling. The bulk of our results provided strong support to our hypothesis and suggest that the high nutritional quality of algae associated with upwelling centers has a strong influence on consumers' preferences, consumption, and performance (growth). The fact that origin was found to be relevant for one of the herbivores suggests that the conditions in which species grow may dictate some of their efficiency as consumers.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.marenvres.2023.106288
dc.identifier.eissn1879-0291
dc.identifier.issn0141-1136
dc.identifier.urihttps://doi.org/10.1016/j.marenvres.2023.106288
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91135
dc.identifier.wosidWOS:001129832300001
dc.language.isoen
dc.revistaMarine environmental research
dc.rightsacceso restringido
dc.subjectHumboldt current system
dc.subjectHerbivory
dc.subjectFeeding behavior
dc.subjectTetrapygus niger
dc.subjectTegula atra
dc.subjectLessonia spicata
dc.subject.ods14 Life Below Water
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa14 Vida submarina
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleCross-examining the influence of upwelling and seaweed quality on herbivores' feeding behavior and growth
dc.typeartículo
dc.volumen193
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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