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Full-Text Articles in Animal Sciences
The Effect Of A Predator Gradient On Female Oviposition Site Selection And Larval Performance, Josef F. Rieger
The Effect Of A Predator Gradient On Female Oviposition Site Selection And Larval Performance, Josef F. Rieger
Biological Sciences Theses & Dissertations
Patterns of larval amphibian distribution and abundance have historically been ascribed to direct predation. However, adult oviposition site selection is an alternative mechanism that can produce identical patterns and significantly influence community assembly. Although such behavioral habitat selection has been documented in several amphibian species whose larvae lack particular anti-predator defenses, the sensitivity of adult amphibians in detecting predator cues and avoiding these habitats has not yet been determined. If larval survivorship is greatly reduced in sites containing predatory fish, selection to detect and avoid habitats with low fish densities should be strong. I conducted three experiments which, (1) evaluated …
Cognitive Ethology And The Cost Of Anthropomorphiphobia, Robert H.I. Dale
Cognitive Ethology And The Cost Of Anthropomorphiphobia, Robert H.I. Dale
Scholarship and Professional Work - LAS
Book review for the following titles:
Animal Minds: Beyond Cognition to Consciousness. By Donald R. Griffin, Chicago: University of Chicago Press, 2001, 376 pages. $27.50 softcover
The Smile of a Dolphin: Remarkable Accounts of Animal Emotions. Edited by Marc Bekoff, New York: Discovery Books, 2000, 240 pages. $35.00 hardcover
Minds of Their Own: Thinking and Awareness in Animals. By Lesley J. Rogers, Boulder, CO: Westview Press, 1998, 224 pages. $19.00 softcover
Discounting And Reciprocity In An Iterated Prisoner’S Dilemma, David W. Stephens, Colleen M. Mclinn, Jeffrey R. Stevens
Discounting And Reciprocity In An Iterated Prisoner’S Dilemma, David W. Stephens, Colleen M. Mclinn, Jeffrey R. Stevens
Jeffrey Stevens Publications
The Iterated Prisoner’s Dilemma (IPD) is a central paradigm in the study of animal cooperation. According to the IPD framework, repeated play (repetition) and reciprocity combine to maintain a cooperative equilibrium. However, experimental studies with animals suggest that cooperative behavior in IPDs is unstable, and some have suggested that strong preferences for immediate benefits (that is, temporal discounting) might explain the fragility of cooperative equilibria. We studied the effects of discounting and strategic reciprocity on cooperation in captive blue jays. Our results demonstrate an interaction between discounting and reciprocity. Blue jays show high stable levels of cooperation in treatments with …