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Titolo:
Detection and avoidance of predators in white-tailed deer (Odocoileus virginianus) and mule deer (O-hemionus)
Autore:
Lingle, S; Wilson, WF;
Indirizzi:
Univ Lethbridge, Dept Psychol & Neurosci, Lethbridge, AB T1K 3M4, Canada Univ Lethbridge Lethbridge AB Canada T1K 3M4 thbridge, AB T1K 3M4, Canada
Titolo Testata:
ETHOLOGY
fascicolo: 2, volume: 107, anno: 2001,
pagine: 125 - 147
SICI:
0179-1613(200102)107:2<125:DAAOPI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANTIPREDATORY VIGILANCE; NATIONAL-PARK; GROUP-SIZE; BEHAVIOR; ATTACK; BIRDS; CONCEALMENT; SELECTION; BENEFITS; FLOCKING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Lingle, S Univ Lethbridge, Dept Psychol & Neurosci, Lethbridge, AB T1K 3M4, Canada Univ Lethbridge Lethbridge AB Canada T1K 3M4 AB T1K 3M4, Canada
Citazione:
S. Lingle e W.F. Wilson, "Detection and avoidance of predators in white-tailed deer (Odocoileus virginianus) and mule deer (O-hemionus)", ETHOLOGY, 107(2), 2001, pp. 125-147

Abstract

In this paper, we investigate the relationship between early detection of predators and predator avoidance in white-tailed deer (Odocoileus virginianus) and mule deer (O. hemionus), two closely related species that differ intheir habitat preferences and in their anti-predator behavior. We used observations of coyotes (Canis latrans) hunting deer to test whether the distance at which white-tails and mule deer alerted to coyotes was related to their vulnerability to predation. Coyote encounters with both species were more likely to escalate when deer alerted at shorter distances. However, coyote encounters with mule deer progressed further than encounters with white-tails that alerted at the same distance, and this was nor due to species differences in group size or habitat. We then conducted an experiment in which a person approached groups of deer to compare the detection abilities andthe form of alert response for white-tails and mule deer, and for age groups within each species. Mule deer alerted to the approacher at longer distances than white-tails, even after controlling for variables that were potentially confounding. Adult females of both species alerted sooner than conspecific juveniles. Mule deer almost always looked directly at the approacheras their initial response, whereas white-tails were more likely to flee orto look in another direction with no indication that they pinpointed the approacher during the trial. Mule deer may have evolved the ability to detect predators earlier than white-tails as an adaptation to their more open habitats, or because they need more time to coordinate subsequent anti-predator defenses. Corresponding author: Susan Lingle, Department of Psychology and Neuroscience, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada. E-mail: susan.lingle@uleth.ca.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 01:09:37