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Author |
Albers, P.C.H.; de Vries, H. |
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Title |
Elo-rating as a tool in the sequential estimation of dominance strengths |
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Journal Article |
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Year |
2001 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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61 |
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2 |
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489-495 |
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refbase @ user @ |
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858 |
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Author |
Danchin, E.; Giraldeau, L.-A.; Valone, T.J.; Wagner, R.H. |
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Title |
Public information: from nosy neighbors to cultural evolution |
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Journal Article |
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Year |
2004 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
305 |
Issue |
5683 |
Pages |
487-491 |
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Animals; *Behavior, Animal; Cues; *Cultural Evolution; *Decision Making; Environment; Evolution; Feeding Behavior; Female; Genes; Humans; Male; Reproduction; Sexual Behavior, Animal |
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Abstract |
Psychologists, economists, and advertising moguls have long known that human decision-making is strongly influenced by the behavior of others. A rapidly accumulating body of evidence suggests that the same is true in animals. Individuals can use information arising from cues inadvertently produced by the behavior of other individuals with similar requirements. Many of these cues provide public information about the quality of alternatives. The use of public information is taxonomically widespread and can enhance fitness. Public information can lead to cultural evolution, which we suggest may then affect biological evolution. |
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U.P.M.C. CNRS-UMR7625, Bat A-7e etage-Case 237, 7 quai Saint Bernard, 75252 Paris Cedex 05, France. edanchin@snv.jussieu.fr |
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1095-9203 |
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PMID:15273386 |
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2131 |
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Zentall, T.R.; Kaiser, D.H. |
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Title |
Interval timing with gaps: gap ambiguity as an alternative to temporal decay |
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Journal Article |
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Year |
2005 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
31 |
Issue |
4 |
Pages |
484-486 |
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Animals; Behavior, Animal; Discrimination (Psychology)/*physiology; Memory/*physiology; Rats; Time Perception/*physiology |
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C. V. Buhusi, D. Perera, and W. H. Meck (2005) proposed a hypothesis of timing in rats to account for the results of experiments that have used the peak procedure with gaps. According to this hypothesis, the introduction of a gap causes the animal's memory for the pregap interval to passively decay (subjectively shorten) in direct proportion to the duration and salience of the gap. Thus, animals should pause with short, nonsalient gaps but should reset their clock with longer, salient gaps. The present authors suggest that the ambiguity of the gap (i.e., the similarity between the gap and the intertrial interval in both appearance and relative duration) causes the animal to actively reset the clock and prevents adequate assessments of the fate of timed intervals prior to the gap. Furthermore, when the intertrial interval is discriminable from the gap, the evidence suggests that timed intervals prior to the gap are not lost but are retained in memory. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506, USA. zentall@uky.edu |
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0097-7403 |
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PMID:16248734 |
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refbase @ user @ |
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220 |
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Harman, F.S.; Nicol, C.J.; Marin, H.E.; Ward, J.M.; Gonzalez, F.J.; Peters, J.M. |
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Title |
Peroxisome proliferator-activated receptor-delta attenuates colon carcinogenesis |
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Journal Article |
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Year |
2004 |
Publication |
Nature medicine |
Abbreviated Journal |
Nat Med |
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10 |
Issue |
5 |
Pages |
481-483 |
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Animals; Azoxymethane/toxicity; Colonic Neoplasms/etiology/genetics/*prevention & control; Colonic Polyps/etiology/genetics/pathology/prevention & control; Disease Models, Animal; Mice; Mice, Knockout; Mice, Mutant Strains; Phenotype; Receptors, Cytoplasmic and Nuclear/deficiency/genetics/*physiology; Transcription Factors/deficiency/genetics/*physiology |
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Peroxisome proliferator-activated receptor-delta (PPAR-delta; also known as PPAR-beta) is expressed at high levels in colon tumors, but its contribution to colon cancer is unclear. We examined the role of PPAR-delta in colon carcinogenesis using PPAR-delta-deficient (Ppard(-/-)) mice. In both the Min mutant and chemically induced mouse models, colon polyp formation was significantly greater in mice nullizygous for PPAR-delta. In contrast to previous reports suggesting that activation of PPAR-delta potentiates colon polyp formation, here we show that PPAR-delta attenuates colon carcinogenesis. |
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Department of Veterinary Science and The Center for Molecular Toxicology and Carcinogenesis, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. jmp21@psu.edu |
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1078-8956 |
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PMID:15048110 |
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refbase @ user @ |
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77 |
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Author |
Kihara, H.; Nakatani, H.; Hiromi, K.; Hon-Nami, K. |
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Title |
Kinetic studies on redox reactions of hemoproteins. I. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ferrocyanide |
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Journal Article |
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Year |
1977 |
Publication |
Biochimica et Biophysica Acta |
Abbreviated Journal |
Biochim Biophys Acta |
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460 |
Issue |
3 |
Pages |
480-489 |
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Animals; Bacteria; *Cytochrome c Group; *Ferrocyanides; Horses; Kinetics; Mathematics; Oxidation-Reduction; Spectrophotometry; Spectrophotometry, Ultraviolet; Temperature; Thermodynamics |
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The oxidation-reduction reaction of horse heart cytochrome c and cytochrome c (552, Thermus thermophilus), which is highly thermoresistant, was studied by temperature-jump method. Ferrohexacyanide was used as reductant. (Formula: see text.) Thermodynamic and activation parameters of the reaction obtained for both cytochromes were compared with each other. The results of this showed that (1) the redox potential of cytochrome c-552, + 0.19 V, is markedly less than that of horse heart cytochrome c. (2) deltaHox of cytochrome c-552 is considerably lower than that of horse heart cytochrome c. (3) deltaSox and deltaSred of cytochrome c-552 are more negative than those of horse heart cytochrome c. (4) kred of cytochrome c-552 is much lower than that of horse heart cytochrome c at room temperature. |
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0006-3002 |
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PMID:195599 |
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Equine Behaviour @ team @ |
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3815 |
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Author |
Kihara, H.; Nakatani, H.; Hiromi, K.; Hon-Nami, K.; Oshima, T. |
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Title |
Kinetic studies on redox reactions of hemoproteins. I. Reduction of thermoresistant cytochrome c-552 and horse heart cytochrome c by ferrocyanide |
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Journal Article |
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Year |
1977 |
Publication |
Biochimica et Biophysica Acta (BBA) – Bioenergetics |
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460 |
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3 |
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480-489 |
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Abstract |
The oxidation-reduction reaction of horse heart cytochrome c and cytochrome c (552, Thermus thermophilus), which is highly thermoresistant, was studied by temperature-jump method. Ferrohexacyanide was used as reductant. Thermodynamic and activation parameters of the reaction obtained for both cytochromes were compared with each other. The results of this showed that (1) the redox potential of cytochrome c-552,+0.19 V, is markedly less than that of horse heart cytochrome c. (2) [up triangle, open]Hox++ of cytochrome c-552 is considerably lower than that of horse heart cytochrome c. (3) [up triangle, open]Hox++ and [up triangle, open]Sred++ of cytoochrome c-552 are more negative than those of horse heart cytochrome c. (4) kred of cytochrome c-552 is much lower than that of horse heart cytochrome c at room temperature. |
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refbase @ user @ |
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3986 |
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Author |
Hedberg, Y.; Dalin, A.-M.; Ohagen, P.; Holm, K.R.; Kindahl, H. |
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Title |
Effect of oestrous-cycle stage on the response of mares in a novel object test and isolation test |
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Journal Article |
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Year |
2005 |
Publication |
Reproduction in Domestic Animals = Zuchthygiene |
Abbreviated Journal |
Reprod Domest Anim |
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Volume |
40 |
Issue |
5 |
Pages |
480-488 |
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Animals; Behavior, Animal/*physiology; Cross-Over Studies; Diestrus/*physiology; Estrus/*physiology; Female; Heart Rate/*physiology; Horses/*physiology; Questionnaires |
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In various species, sex, hormonal treatments and oestrous-cycle stage have been shown to affect the animal's response in behavioural tests. Few such studies have been performed in the horse. The main aim of the present study was to investigate whether oestrous-cycle stage affects mares' response to a novel object test and isolation test and, in part, to study whether mares, assumed to suffer from oestrous-related behavioural problems, respond differently in these tests when compared with controls. Twelve mares were tested twice, in oestrus and dioestrus, in a crossover design. Seven behavioural and two heart rate variables were measured for the novel object test and two heart rate variables for the isolation test. Oestrous-cycle stage and whether a mare was classified as a 'problem' mare did not affect the mare's response. However, test order, i.e. the cycle stage a mare was tested in first, affected its reaction. This effect could partly be explained by significant differences between test occasions 1 and 2 in three behavioural variables and one heart rate variable (p < 0.05) in the novel object test. The mares explored the novel object more and had a higher mean heart rate in the first test. Exploring the novel object more could largely be attributed to those mares tested in dioestrus first, perhaps indicating that the mares in oestrus were less receptive to the novel object. The reason for the differences between test occasions could be an effect of learning or habituation. |
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Division of Comparative Reproduction, Obstetrics and Udder Health, Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden. ylva.hedberg@kv.slu.se |
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0936-6768 |
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PMID:16149956 |
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Equine Behaviour @ team @ |
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5170 |
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Senior, J.M.; Pinchbeck, G.L.; Allister, R.; Dugdale, A.H.A.; Clark, L.; Clutton, R.E.; Coumbe, K.; Dyson, S.; Clegg, P.D. |
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Title |
Post anaesthetic colic in horses: a preventable complication? |
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Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
38 |
Issue |
5 |
Pages |
479-484 |
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Anesthesia/adverse effects/*veterinary; Animals; Case-Control Studies; Colic/chemically induced/epidemiology/prevention & control/*veterinary; Confidence Intervals; Fasting; Fecal Impaction/complications/epidemiology/veterinary; Horse Diseases/chemically induced/*epidemiology/prevention & control; Horses; Logistic Models; Multivariate Analysis; Odds Ratio; Postoperative Complications/chemically induced/epidemiology/prevention & control/*veterinary; Predictive Value of Tests; Prevalence; Prospective Studies; Risk Factors |
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REASONS FOR PERFORMING STUDY: There is little information on the prevalence of, and risk factors associated with, post anaesthetic colic (PAC) in horses undergoing nonabdominal operations. OBJECTIVES: To undertake the first prospective study of prevalence of PAC and identify risk factors in its development in nonabdominal procedures. METHODS: A multicentre prospective case-control study was conducted, on every horse undergoing anaesthesia for a nonabdominal procedure between April 2004 and June 2005. Colic cases were defined as any horse with recognised signs of abdominal pain within 72 h of general anaesthesia that could not be attributed to any concurrent disease. Five control horses per case were selected randomly from the study population at all hospitals. Multivariable logistic regression analysis was used to examine the relationship between predictor variables and the risk of developing PAC. RESULTS: The estimated mean prevalence of PAC in the study population was 5.2% (95% CI, 2.8, 8.0). However, the prevalence of colic varied between each centre. The most commonly diagnosed cause of colic was impaction. Multivariable analyses showed that the centre involved and the type of surgery performed were associated with an increased risk of PAC. Preoperative food deprivation and the use of opioid drugs were confounding factors. CONCLUSIONS: Prevalence of PAC varied significantly between the 4 hospitals studied; there may be hospital-related covariates that account for this. The type of surgery performed influenced the risk of PAC. POTENTIAL RELEVANCE: Identifying the risk factors for PAC is a prerequisite for its prevention. This study indicates horses at increased risk of PAC that might benefit from a more critical evaluation of post anaesthetic gastrointestinal function and/or the provision of preventative measures. Further investigation is required to explain the variation in prevalence of PAC between centres. |
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Institutes of Evolution, Immunology and Infection Research, University of Edinburgh, UK |
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0425-1644 |
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PMID:16986610 |
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1860 |
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Author |
Manson, J.H. |
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Title |
Male aggression: a cost of female mate choice in Cayo Santiago rhesus macaques |
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Journal Article |
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Year |
1994 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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48 |
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473-475 |
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10.1006/anbe.1994.1262 |
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Equine Behaviour @ team @ |
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4888 |
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Author |
McCarthy, M.S.; Jensvold, M.L.A.; Fouts, D.H. |
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Title |
Use of gesture sequences in captive chimpanzee (Pan troglodytes) play |
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Journal Article |
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Year |
2013 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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16 |
Issue |
3 |
Pages |
471-481 |
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Gestural communication; Attentional state; Chimpanzee; Gesture sequence |
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This study examined the use of sensory modalities relative to a partner’s behavior in gesture sequences during captive chimpanzee play at the Chimpanzee and Human Communication Institute. We hypothesized that chimpanzees would use visual gestures toward attentive recipients and auditory/tactile gestures toward inattentive recipients. We also hypothesized that gesture sequences would be more prevalent toward unresponsive rather than responsive recipients. The chimpanzees used significantly more auditory/tactile rather than visual gestures first in sequences with both attentive and inattentive recipients. They rarely used visual gestures toward inattentive recipients. Auditory/tactile gestures were effective with and used with both attentive and inattentive recipients. Recipients responded significantly more to single gestures than to first gestures in sequences. Sequences often indicated that recipients did not respond to initial gestures, whereas effective single gestures made more gestures unnecessary. The chimpanzees thus gestured appropriately relative to a recipient’s behavior and modified their interactions according to contextual social cues. |
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Springer-Verlag |
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1435-9448 |
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Equine Behaviour @ team @ |
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5665 |
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