Adaptive Coloration in Peromyscus polionotus: Experimental Selection by Owls
D. Kaufman. Journal of Mammalogy, 55 (2):
pp. 271-283(1974)
Аннотация
Predation experiments were conducted in field enclosures using two naturally occurring phenotypes of the old-field mouse (Peromyscus polionotus) as prey, with barn owls and screech owls as predators. Two mice, one light brown and one dark brown, were released into enclosures each containing one owl. The phenotype of the first mouse captured was recorded. Effectiveness of selection against the conspicuous prey by owls under the experimental conditions was estimated using the selection index from Dice (1947). Owls captured more of the conspicuous than the matching phenotype on both dark and light soils. Changes in intensity of illumination altered the intensity of selection and this effect differed on light and dark soils.
%0 Journal Article
%1 kaufman1974adaptive
%A Kaufman, Donald W.
%D 1974
%I American Society of Mammalogists
%J Journal of Mammalogy
%K cryptic_coloration peromyscus predators
%N 2
%P pp. 271-283
%T Adaptive Coloration in Peromyscus polionotus: Experimental Selection by Owls
%U http://www.jstor.org/stable/1378997
%V 55
%X Predation experiments were conducted in field enclosures using two naturally occurring phenotypes of the old-field mouse (Peromyscus polionotus) as prey, with barn owls and screech owls as predators. Two mice, one light brown and one dark brown, were released into enclosures each containing one owl. The phenotype of the first mouse captured was recorded. Effectiveness of selection against the conspicuous prey by owls under the experimental conditions was estimated using the selection index from Dice (1947). Owls captured more of the conspicuous than the matching phenotype on both dark and light soils. Changes in intensity of illumination altered the intensity of selection and this effect differed on light and dark soils.