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Experimental functi...
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Arzel, CelinéKristianstad University
(författare)
Experimental functional response and inter-individual variation in foraging rate of teal (Anas crecca)
- Artikel/kapitelEngelska2007
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LIBRIS-ID:oai:researchportal.hkr.se/admin:publications/48fdeef1-eedb-4dd1-8c0a-d6087f987fd7
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oai:researchportal.hkr.se/admin:publications/48fdeef1-eedb-4dd1-8c0a-d6087f987fd7URI
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https://doi.org/10.1016/j.beproc.2007.01.001DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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The functional response, i.e. the change in per capita food intake rate per time unit with changed food availability, is a widely used too] for understanding the ecology and behaviour of animals. However, waterfowl remain poorly explored in this context. In an aviary experiment we derived a functional response curve for teal (Anas crecca) foraging on rice (Oryza sativa) seeds. We found a linear relationship between intake rate and seed density, as expected for a filter-feeder. At high seed densities we found a threshold, above which intake rate still increased linearly but with a lower slope, possibly reflecting a switch from filter-feeding to a scooping foraging mode. The present study shows that food intake rate in teal is linearly related to food availability within the range of naturally occurring seed densities, a finding with major implications for management and conservation of wetland habitats.
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Guillemain, M.Office national de la chasse et de la faune sauvage
(författare)
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Gurd, D.B.Centre for Wildlife Ecology, Department of Biological Sciences, Simon Fraser University, Burnaby, BC,Centre for Wildlife Ecology, Department of Biological Sciences, Simon Fraser University, Burnaby, BC
(författare)
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Elmberg, JohanKristianstad University,Akvatisk biologi och kemi
(författare)
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Fritz, H.Centre d'Etudes Biologiques de Chizé,Centre d’Études Biologiques de Chizé
(författare)
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Arnaud, A.Tour du Valat,Centre de Recherche de la Tour du Valat, Arles
(författare)
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Pin, C.Tour du Valat,Centre de Recherche de la Tour du Valat, Arles
(författare)
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Bosca, F.Office national de la chasse et de la faune sauvage
(författare)
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Kristianstad UniversityOffice national de la chasse et de la faune sauvage
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Behavioural Processes: Elsevier75:1, s. 66-710376-63571872-8308
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