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Author |
Packer, C; Heinsohn, R. |
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Title |
Response:Lioness leadership |
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Journal Article |
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Year |
1996 |
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Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume  |
271 |
Issue |
5253 |
Pages |
1215-1216 |
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Animals; *Behavior; Animal; Cooperative Behavior; Female; Lions/*psychology; Territoriality |
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0036-8075 |
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Equine Behaviour @ team @ Jahn1996 |
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2072 |
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Author |
Gary C. Jahn; Craig Packer,Robert Heinsohn |
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Title |
Lioness leadership |
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Journal Article |
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Year |
1996 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
271 |
Issue |
5253 |
Pages |
1216-1219 |
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Keywords |
Animals; *Behavior; Animal; Cooperative Behavior; Female; Lions/*psychology; Territoriality |
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0036-8075 |
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Equine Behaviour @ team @ Jahn1996 |
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2073 |
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Author |
McLaren, B.E.; Peterson, R.O. |
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Title |
Wolves, Moose, and Tree Rings on Isle Royale |
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Journal Article |
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Year |
1994 |
Publication |
Science |
Abbreviated Journal |
Science |
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Volume |
266 |
Issue |
5190 |
Pages |
1555-1558 |
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Investigation of tree growth in Isle Royale National Park in Michigan revealed the influence of herbivores and carnivores on plants in an intimately linked food chain. Plant growth rates were regulated by cycles in animal density and responded to annual changes in primary productivity only when released from herbivory by wolf predation. Isle Royale's dendrochronology complements a rich literature on food chain control in aquatic systems, which often supports a trophic cascade model. This study provides evidence of top-down control in a forested ecosystem. |
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Equine Behaviour @ team @ |
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4995 |
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Author |
Real, L.A. |
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Title |
Animal choice behavior and the evolution of cognitive architecture |
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Journal Article |
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Year |
1991 |
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Science (New York, N.Y.) |
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Science |
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253 |
Issue |
5023 |
Pages |
980-986 |
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Keywords |
Animals; Bees/genetics/*physiology; Biomechanics; *Choice Behavior; *Cognition; *Evolution; Mathematics; Models, Genetic; Probability |
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Animals process sensory information according to specific computational rules and, subsequently, form representations of their environments that form the basis for decisions and choices. The specific computational rules used by organisms will often be evolutionarily adaptive by generating higher probabilities of survival, reproduction, and resource acquisition. Experiments with enclosed colonies of bumblebees constrained to foraging on artificial flowers suggest that the bumblebee's cognitive architecture is designed to efficiently exploit floral resources from spatially structured environments given limits on memory and the neuronal processing of information. A non-linear relationship between the biomechanics of nectar extraction and rates of net energetic gain by individual bees may account for sensitivities to both the arithmetic mean and variance in reward distributions in flowers. Heuristic rules that lead to efficient resource exploitation may also lead to subjective misperception of likelihoods. Subjective probability formation may then be viewed as a problem in pattern recognition subject to specific sampling schemes and memory constraints. |
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Department of Biology, University of North Carolina, Chapel Hill 27599-3280 |
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0036-8075 |
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PMID:1887231 |
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Call Number |
Equine Behaviour @ team @ |
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2846 |
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Author |
Galdikas, B.M. |
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Title |
Orangutan tool use |
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Journal Article |
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Year |
1989 |
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Science (New York, N.Y.) |
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Science |
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Volume |
243 |
Issue |
4888 |
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152 |
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Keywords |
Animals; Animals, Wild; *Behavior, Animal; Cognition; *Hominidae; Humans; *Pongo pygmaeus |
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0036-8075 |
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PMID:2911726 |
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Equine Behaviour @ team @ |
Serial |
2847 |
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Author |
Hamilton, C.R.; Vermeire, B.A. |
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Title |
Complementary hemispheric specialization in monkeys |
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Journal Article |
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Year |
1988 |
Publication |
Science |
Abbreviated Journal |
Science |
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Volume |
242 |
Issue |
4886 |
Pages |
1691-1694 |
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Twenty-five split-brain monkeys were taught to discriminate two types of visual stimuli that engage lateralized cerebral processing in human subjects. Differential lateralization for the two kinds of discriminations was found; the left hemisphere was better at distinguishing between tilted lines and the right hemisphere was better at discriminating faces. These results indicate that lateralization of cognitive processing appeared in primates independently of language or handedness. In addition, cerebral lateralization in monkeys may provide an appropriate model for studying the biological basis of hemispheric specialization. |
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Equine Behaviour @ team @ |
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5342 |
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Author |
Bednarz, J.C. |
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Title |
Cooperative Hunting Harris' Hawks (Parabuteo unicinctus) |
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Journal Article |
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Year |
1988 |
Publication |
Science |
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Science |
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Volume |
239 |
Issue |
4847 |
Pages |
1525-1527 |
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Coordinated hunting by several individuals directed toward the capture and sharing of one Large prey animal has been documented convincingly only for a few mammalian carnivores. In New Mexico, Harris' hawks formed hunting parties of two to six individuals in the nonbreeding season. This behavior improved capture success and the average energy available per individual enabled hawks to dispatch prey larger than themselves. These patterns suggest that cooperation is important to understanding the evolution of complex social behavior in higher vertebrates and, specifically, that benefits derived from team hunting a key factor in the social living of Harris' hawks. |
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10.1126/science.239.4847.1525 |
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Equine Behaviour @ team @ |
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4717 |
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Author |
Cheney, D.; Seyfarth, R.; Smuts, B. |
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Title |
Social relationships and social cognition in nonhuman primates |
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Journal Article |
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Year |
1986 |
Publication |
Science (New York, N.Y.) |
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Science |
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Volume |
234 |
Issue |
4782 |
Pages |
1361-1366 |
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Keywords |
Animals; *Cognition; Female; Male; Pair Bond; Primates/*physiology; *Social Behavior; Social Dominance; Social Perception |
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Complex social relationships among nonhuman primates appear to contribute to individual reproductive success. Experiments with and behavioral observations of natural populations suggest that sophisticated cognitive mechanisms may underlie primate social relationships. Similar capacities are usually less apparent in the nonsocial realm, supporting the view that at least some aspects of primate intelligence evolved to solve the challenges of interacting with conspecifics. |
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0036-8075 |
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PMID:3538419 |
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refbase @ user @ |
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349 |
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Axelrod, R.; Hamilton, W.D. |
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Title |
The evolution of cooperation |
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Journal Article |
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Year |
1981 |
Publication |
Science |
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Science |
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211 |
Issue |
4489 |
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1390-1396 |
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Cooperation in organisms, whether bacteria or primates, has been a difficulty for evolutionary theory since Darwin. On the assumption that interactions between pairs of individuals occur on a probabilistic basis, a model is developed based on the concept of an evolutionarily stable strategy in the context of the Prisoner's Dilemma game. Deductions from the model, and the results of a computer tournament show how cooperation based on reciprocity can get started in an asocial world, can thrive while interacting with a wide range of other strategies, and can resist invasion once fully established. Potential applications include specific aspects of territoriality, mating, and disease. |
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10.1126/science.7466396 |
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Equine Behaviour @ team @ |
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4933 |
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Seyfarth, R.M.; Cheney, D.L.; Marler, P. |
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Monkey responses to three different alarm calls: evidence of predator classification and semantic communication |
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1980 |
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Science (New York, N.Y.) |
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Science |
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210 |
Issue |
4471 |
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801-803 |
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*Animal Communication; Animals; Behavior, Animal/*physiology; Cercopithecidae/*physiology; *Fear; Female; Male; Predatory Behavior; Vocalization, Animal |
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Abstract |
Vervet monkeys give different alarm calls to different predators. Recordings of the alarms played back when predators were absent caused the monkeys to run into trees for leopard alarms, look up for eagle alarms, and look down for snake alarms. Adults call primarily to leopards, martial eagles, and pythons, but infants give leopard alarms to various mammals, eagle alarms to many birds, and snake alarms to various snakelike objects. Predator classification improves with age and experience. |
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PMID:7433999 |
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refbase @ user @ |
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351 |
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