Vis enkel innførsel

dc.contributor.authorde Meo, Ilaria
dc.contributor.authorØstbye, Kjartan
dc.contributor.authorKahilainen, Kimmo Kalevi
dc.contributor.authorHayden, Brian
dc.contributor.authorFagertun, Christian
dc.contributor.authorPoleo, Antonio
dc.date.accessioned2022-05-06T10:42:10Z
dc.date.available2022-05-06T10:42:10Z
dc.date.created2021-09-29T19:36:59Z
dc.date.issued2021
dc.identifier.citationEcology and Evolution. 2021, 11 (5), 2072-2085.en_US
dc.identifier.issn2045-7758
dc.identifier.urihttps://hdl.handle.net/11250/2994531
dc.description.abstractPhenotypic plasticity can be expressed as changes in body shape in response to environmental variability. Crucian carp (Carassius carassius), a widespread cyprinid, displays remarkable plasticity in body morphology and increases body depth when exposed to cues from predators, suggesting the triggering of an antipredator defense mechanism. However, these morphological changes could also be related to resource use and foraging behavior, as an indirect effect of predator presence. In order to de-termine whether phenotypic plasticity in crucian carp is driven by a direct or indirect response to predation threat, we compared twelve fish communities inhabiting small lakes in southeast Norway grouped by four categories of predation regimes: no predator fish, or brown trout (Salmo trutta), perch (Perca fluviatilis), or pike (Esox lucius) as main piscivores. We predicted the body shape of crucian carp to be associated with the species composition of predator communities and that the presence of efficient piscivores would result in a deeper body shape. We use stable isotope analyses to test whether this variation in body shape was related to a shift in individual resource use- that is, littoral rather than pelagic resource use would favor the development of a specific body shape- or other environmental characteristics. The results showed that increasingly efficient predator communities induced progressively deeper body shape, larger body size, and lower population densities. Predator maximum gape size and individual trophic position were the best variables explaining crucian carp variation in body depth among predation categories, while littoral resource use did not have a clear effect. The gradient in predation pressure also corresponded to a shift in lake productivity. These results indicate that crucian carp have a fine-tuned morpho-logical defense mechanism against predation risk, triggered by the combined effect of predator presence and resource availabilityen_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectbody shapeen_US
dc.subjectlake productivityen_US
dc.subjectphenotypic plasticity,en_US
dc.subjectpredation risk regimeen_US
dc.subjectresource useen_US
dc.titlePredator community and resource use jointly modulate the inducible defense response in body height of crucian carpen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber2072-2085en_US
dc.source.volume11en_US
dc.source.journalEcology and Evolutionen_US
dc.source.issue5en_US
dc.identifier.doi10.1002/ece3.7176
dc.identifier.cristin1940872
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 4.0 Internasjonal