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Innate responses of...
Innate responses of mallard ducklings towards aerial, aquatic and terrestrial predators
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- Dessborn, Lisa, 1976- (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Högskolan Kristianstad,Avdelningen för Naturvetenskap,Forskningsmiljön Man & Biosphere Health (MABH),Institutionen för vilt, fisk och miljö,Department of Wildlife, Fish and Environmental Studies,Kristianstad University
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- Englund, Göran (author)
- Department of Ecology and Environmental Science, Umeå University
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- Elmberg, Johan, 1960- (author)
- Högskolan Kristianstad,Avdelningen för Naturvetenskap,Forskningsmiljön Man & Biosphere Health (MABH),Kristianstad University
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- Arzél, Celine (author)
- Section of Ecology, Department of Biology, University of Turku
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Arzel, Celine (author)
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- Englund, Goran (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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(creator_code:org_t)
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- Leiden, Netherlands : Brill Academic Publishers, 2012
- 2012
- English.
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In: Behaviour. - Leiden, Netherlands : Brill Academic Publishers. - 0005-7959 .- 1568-539X. ; 149:13-14, s. 1299-1317
- Related links:
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https://doi.org/10.1...
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http://www.slu.se/su...
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Abstract
Subject headings
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- Reproductive success in ducks is strongly influenced by predation on the breeding grounds. Ducklings are targeted by a range of terrestrial, aerial and aquatic predators, giving a strong selective advantage to individuals and broods that have effective ways to avoid predation. In experiments on naive mallard (Anas platyrhynchos) ducklings without an accompanying adult female we investigated the innate ability to identify and avoid threats at varying intensity from aerial, aquatic and terrestrial predators. Ducklings displayed increased vigilance in response to pre-recorded calls of predatory birds, representing a low level of threat. They did not react to visual and olfactory stimuli generated by motionless northern pike (Esox lucius). Neither did they show a strong response to caged American mink (Neovison vison) (visual and olfactory stimuli), although they avoided the area with the mink, indicating a certain level of recognition. High intensity threats were simulated by staging attacks from aerial (goshawk, Accipiter gentilis) and aquatic predators (northern pike). The aerial attack made ducklings dive and scatter under water, whereas the response to attack by pike was to run on the water and scatter in different directions. The lack of response to a ‘passive’ pike and the rather weak avoidance of mink indicate that olfactory cues are not as important in identifying a potential predatory threat by ducklings as are auditory cues. Visual cues appear to be of little importance unless they are combined with movement, and a clear response is only triggered when the intensity of predator threat is high. Mallard ducklings, thus, show an innate capacity to adjust anti-predator behaviour to different predator types and to threat intensity. Our study highlights the general trade-off between foraging needs and predator avoidance, but also second-order trade-offs in which innate avoidance behaviour towards one type of predator may increase predation risk from another.
Subject headings
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
- NATURVETENSKAP -- Biologiska vetenskaper -- Zoologi (hsv//swe)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Keyword
- innate behaviour
- raptor
- threat sensitive predator avoidance
- mink
- pike
- predator response
Publication and Content Type
- ref (subject category)
- art (subject category)