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Timney, B.; Macuda, T. |
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Vision and hearing in horses |
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2001 |
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Journal of the American Veterinary Medical Association |
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J Am Vet Med Assoc |
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218 |
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10 |
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1567-1574 |
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Equine Behaviour @ team @ room B 3.029 |
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2278 |
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Author |
Mushiake H.; Saito N.; Sakamoto K.; Sato Y.; Tanji J. |
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Title |
Visually based path-planning by Japanese monkeys |
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Journal Article |
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2001 |
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Cognitive Brain Research |
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11 |
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165-169 |
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refbase @ user @ |
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3476 |
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Author |
Kimura, R. |
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Title |
Volatile substances in feces, urine and urine-marked feces of feral horses |
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Journal Article |
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Year |
2001 |
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Canadian Journal of Animal Science |
Abbreviated Journal |
Can. J. Anim. Sci. |
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81 |
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3 |
Pages |
411-420 |
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Odors (volatile), excrement, scent-marking, masking, horse (feral), (releaser) pheromone |
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The identity and amount of volatile substances in the feces, urine and feces scent-marked with urine (i.e., feces mixed with urine) of feral horses was determined by acid/steam distillation and gas chromatography-mass spectrometry. The frequency of excretion and scent marking, as evaluated in the breeding and non-breeding seasons, showed clear evidence of seasonal behavioral differences. The concentration of each substance (fatty acids, alcohols, aldehydes, phenols, amines and alkanes) in the feces differed according to maturity, sex and stage in the reproductive process. They had a characteristic chemical fingerprint. Although the levels of tetradecanoic and hexadecanoic acids in the feces of estrous mares were significantly higher than the respective levels in the feces of non-estrous mares, in the case of scent-marked feces by stallions, the levels of them in the feces from estrous mares had decreased to levels similar to those in non-estrous mares. The concentration of these substances in mares were not significantly different. The presence of a high concentration of cresols in the urine of stallions in the breeding season suggests that one role of scent marking by stallions is masking the odor of the feces produced by mares. |
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0008-3984 |
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Equine Museum of Japan, 1-3 Negishidai, Nakaku, Yokohama 231, Japan (hidousch@alles.or.jp) |
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Equine Behaviour @ team @ |
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2314 |
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Taylor, J.G. |
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Title |
What do Neuronal Network Models of the Mind Indicate about Animal Consciousness? |
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Year |
2001 |
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Animal Welfare |
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10 |
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63-75 |
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3490 |
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Richards, S.A.; de Roos, A.M. |
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Title |
When is habitat assessment an advantage when foraging? |
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Year |
2001 |
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Animal Behaviour. |
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Anim. Behav. |
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61 |
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6 |
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1101-1112 |
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Foragers can often show a broad range of strategies when searching for resources. The simplest foraging strategy is to search randomly within a habitat; however, foragers can often assess habitat quality over various spatial scales and use this information to keep themselves in, or direct themselves to, regions of high resource abundance or low predation risk. We investigated models that describe a population of consumers competing for a renewable resource that is distributed among discrete patches. Our aim was to identify what foraging strategy or strategies are expected to persist within a population, where strategies differ in the degree of habitat assessment (i.e. none, local, or global). We were interested in how the optimal strategies are dependent on the cost of assessment and habitat structure (i.e. the variation in renewal rates and predation risks among patches). The models showed that the simple random foraging strategy (i.e. make no habitat assessments) often persisted even when the cost of habitat assessment was low. Persistence could occur when habitat assessment and population dynamics generated an ideal free distribution because it could be exploited by the random foragers. Habitat assessment was more advantageous when consumers could not achieve ideal free distributions, which was more likely as patches became less productive. When productivity was low we sometimes observed the situation where different foraging strategies generated resource heterogeneities that promoted their coexistence, and this could occur even when all patches were intrinsically identical. |
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2153 |
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Author |
Dawkins, M.S. |
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Title |
Who Needs Consciousness? |
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Year |
2001 |
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Animal Welfare |
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10 |
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19-29 |
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refbase @ user @ |
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3489 |
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Marfin, A.A.; Petersen, L.R.; Eidson, M.; Miller, J.; Hadler, J.; Farello, C.; Werner, B.; Campbell, G.L.; Layton, M.; Smith, P.; Bresnitz, E.; Cartter, M.; Scaletta, J.; Obiri, G.; Bunning, M.; Craven, R.C.; Roehrig, J.T.; Julian, K.G.; Hinten, S.R.; Gubler, D.J. |
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Widespread West Nile virus activity, eastern United States, 2000 |
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Journal Article |
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Year |
2001 |
Publication |
Emerging Infectious Diseases |
Abbreviated Journal |
Emerg Infect Dis |
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7 |
Issue |
4 |
Pages |
730-735 |
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Keywords |
Animals; Bird Diseases/epidemiology/virology; Culicidae/virology; *Disease Outbreaks; Ecology; Horse Diseases/epidemiology/virology; Horses; Humans; Population Surveillance; Songbirds/virology; United States/epidemiology; West Nile Fever/*epidemiology/veterinary/virology; *West Nile virus |
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In 1999, the U.S. West Nile (WN) virus epidemic was preceded by widespread reports of avian deaths. In 2000, ArboNET, a cooperative WN virus surveillance system, was implemented to monitor the sentinel epizootic that precedes human infection. This report summarizes 2000 surveillance data, documents widespread virus activity in 2000, and demonstrates the utility of monitoring virus activity in animals to identify human risk for infection. |
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Division of Vector-Borne Infections Diseases, Centers for Disease Control and Prevention, P.O. Box 2087, Fort Collins, CO 80522, USA. aam@cdc.gov |
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ArboNET Cooperative Surveillance Group |
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English |
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1080-6040 |
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PMID:11585539 |
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Equine Behaviour @ team @ |
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2646 |
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Author |
Giulotto, E. |
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Will horse genetics create better champions? |
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2001 |
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Trends Genet. |
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17 |
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166 |
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Cited By (since 1996): 1; Export Date: 24 October 2008 |
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Admin @ knut @ |
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4589 |
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