نبذة مختصرة : Pages 385-388 : illustrations ; 27 cm ; Bibliographical references (page 388) ; Models of optimal search rates predict that predators increase the search rate when availability of conspicuous prey increases relative to cryptic prey. I tested this prediction by comparing foraging hop rates by 19 Painted Redstarts (Myioborus pictus) - insectivorous birds in Arizona, USA. Redstarts often use flashy displays of open wings and tail to flush their prey and to subsequently chase the prey in air. Such flush-displays make the prey conspicuous and easy to detect. Hence, foraging mode affects relative availability of conspicuous versus cryptic prey: birds foraging with frequent flush-displays encounter conspicuous prey more often then birds foraging with infrequent flush-displays. As predicted, the hop rates during foraging with infrequent flush-displays were lower than hop rates during foraging with frequent displays. ; Strony 385-388 : ilustracje ; 27 cm ; Bibliografia na stronie 388 ; Models of optimal search rates predict that predators increase the search rate when availability of conspicuous prey increases relative to cryptic prey. I tested this prediction by comparing foraging hop rates by 19 Painted Redstarts (Myioborus pictus) - insectivorous birds in Arizona, USA. Redstarts often use flashy displays of open wings and tail to flush their prey and to subsequently chase the prey in air. Such flush-displays make the prey conspicuous and easy to detect. Hence, foraging mode affects relative availability of conspicuous versus cryptic prey: birds foraging with frequent flush-displays encounter conspicuous prey more often then birds foraging with infrequent flush-displays. As predicted, the hop rates during foraging with infrequent flush-displays were lower than hop rates during foraging with frequent displays.
Relation: Polish Journal of Ecology; Barber M. B., Barber D. R., Jabłoński P. G. 2000 - Painted Redstart (Myioborus pictus). No. 528 (In: Birds of North America, Eds. A. Poole, F.Gill) - The Academy of Natural Sciences, Philadelphia, PA and The American Ornithologist's Union, Washington D.C.; Dukas R., Ellner S. 1993 - Information processing and prey detection - Ecology, 74: 1337-1346.; Evans D. L., Schmidt J. O. 1990 - Insect defenses. Adaptive Mechanisms and Strategies of Prey andPredators - State University of New York Press, New York.; Edmunds M. 1974 - Defense in Animals. A survey of anti-predator defenses - Longmann Ltd., Harlow, Essex.; Gendron R. P., Staddon J. E. R. 1983 - Searching for cryptic prey: the effect of search rate - Am. Nat. 121: 172-186.; Gendron R. P., Staddon J. E. R. 1984 - A laboratory simulation of foraging behavior: the effect of search rate on the probability of detecting prey - Am. Nat. 124: 407-415.; Gendron R. P. 1986 - Searching for cryptic prey: evidence for optimal search rates and the formation of search images in quail - Anim. Behav. 34: 898-912.; Green E. 1989 - Food resources, interspecific aggression, and community organization in a guild of insectivorous birds - Ph.D. Dissertation, Princeton University, Princeton.; Jabłoński P. G. 1996 - Dark habitats and bright birds: warblers may use wing patches to flush prey - Oikos, 75: 350-352.; Jabłoński P. G. 1999 - A rare predator exploits prey escape behavior: the role of tail-fanning and plumage contrast in foraging of the painted redstart (Myioborus pictus) - Behav. Ecol. 10: 7-14.; Jabłoński P. G. 2001 - Sensory exploitation of prey: manipulation of initial direction of prey escapes by a conspicuous "rare enemy" - Proc. Roy. Soc. London, B, 268: 1017-1022.; Jabłoński P. G. 2002 - Searching for conspicuous versus cryptic prey: a field study and a review of search rates of flush-pursuing versus substrate-gleaning birds - Condor, 104: 657-661.; Jabłoński P. G., Strausfeld N. J. 2000 - Exploitation of an ancient escape circuit by an avian predator: prey sensitivity to model predator display in the tield - Brain Behavior and Evolution, 56: 94-106.; Jabłoński P. G., Strausfeld N. J. 2001 - Exploitation of an ancient escape circuit by an avian predator: relationships between taxon-specific prey escape circuits and the sensitivity to visual cues from the predator - Brain Behavior and Evolution, 58: 218-240; Keast A., Pearce L., Saunders S. 1995 - How convergent is American Redstart (Setophaga ruticilla, Parulinae) with fiycatchers (Tyrannidae) in morphology and feeding behavior? - Auk, 112: 310-325.; Remsen J. V., Robinson S. K. 1990 - A classification scheme for foraging behavior of birds in terrestrial habitats - Stud. Avian Biol. 13: 144-160.; Rice W. R. 1989 - Analyzing tables of statistical tests - Evolution, 43: 223-225.; Rice W. R., Gaines S. D. 1994 - Heads I win, tails you lose: testing directional alternative hypotheses in ecological and evolutionary research - Trends Ecol. Evol. 9: 235-237.; Zar J. H. 1999 - Biostatistical Analysis Prentice - Hall lnt, Inc., Englewood Cliffs.; oai:rcin.org.pl:publication:91641; https://rcin.org.pl/dlibra/publication/edition/117560/content; oai:rcin.org.pl:117560
Processing Request
No Comments.