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Author |
Alexander, F.; Davies, M.E.; Muir, A.R. |
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Title |
Bacteriophage-like particles in the large intestine of the horse |
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Journal Article |
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Year |
1970 |
Publication |
Research in veterinary science |
Abbreviated Journal |
Res Vet Sci |
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Volume |
11 |
Issue |
6 |
Pages |
592-593 |
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Keywords |
Animals; Bacteriophages/*isolation & purification; Cecum/microbiology; Colon/microbiology |
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0034-5288 |
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PMID:5498578 |
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Call Number |
refbase @ user @ |
Serial |
114 |
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Author |
Alexander, F. |
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Title |
Factors affecting the blood sugar concentration in horses |
Type |
Journal Article |
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Year |
1955 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
40 |
Issue |
1 |
Pages |
24-31 |
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Keywords |
Blood Glucose/*analysis; *Horses; *BLOOD SUGAR/determination; *Horses |
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0033-5541 |
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Notes |
PMID:14371987 |
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Call Number |
refbase @ user @ |
Serial |
123 |
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Author |
Alexander, F. |
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Title |
Some functions of the large intestine of the horse |
Type |
Journal Article |
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Year |
1952 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
37 |
Issue |
4 |
Pages |
205-214 |
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Keywords |
*Horses; *Intestine, Large; *Horses; *Intestine, Large |
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0033-5541 |
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Notes |
PMID:13014259 |
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Call Number |
refbase @ user @ |
Serial |
127 |
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Author |
Alexander, F.; Benzie, D. |
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Title |
A radiological study of the digestive tract of the foal |
Type |
Journal Article |
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Year |
1951 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
36 |
Issue |
4 |
Pages |
213-217 |
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Keywords |
Gastrointestinal Tract/*radiography; *Horses; *GASTROINTESTINAL SYSTEM/radiography; *Horses; *MYOCARDITIS/etiology and pathogenesis |
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0033-5541 |
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Notes |
PMID:14892238 |
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no |
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Call Number |
refbase @ user @ |
Serial |
129 |
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Author |
Khalil, A.M.; Murakami, N.; Kaseda, Y. |
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Title |
Relationship between plasma testosterone concentrations and age, breeding season and harem size in Misaki feral horses |
Type |
Journal Article |
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Year |
1998 |
Publication |
The Journal of veterinary medical science / the Japanese Society of Veterinary Science |
Abbreviated Journal |
J Vet Med Sci |
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Volume |
60 |
Issue |
5 |
Pages |
643-645 |
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Keywords |
Age Factors; Animals; Animals, Wild; *Horses; Japan; Male; Reproduction; Seasons; Sexual Behavior, Animal; Sexual Maturation; *Social Behavior; Testosterone/*blood |
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Abstract |
Jugular vein blood samples were collected from 23 young and sexual mature feral stallions to examine the relationship between plasma testosterone concentration and age, breeding season or harem size. Testosterone concentration increased with the age of the stallions until they formed their own harems, at about 4 to 6 years old. Seasonal variations in testosterone concentrations were observed, and found to be significantly higher (P<0.001) throughout the breeding season than non-breeding season, from 3 years of age. Testosterone levels were correlated with harem size for individual stallions. It can be inferred from these results that there is a relationship between plasma testosterone concentration and age, breeding season and harem size. |
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Laboratory of Animal Behavioral Science, Faculty of Agriculture, Miyazaki University, Japan |
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ISSN |
0916-7250 |
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Notes |
PMID:9637303 |
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no |
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Call Number |
refbase @ user @ |
Serial |
137 |
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Author |
Plotnik, J.; Nelson, P.A.; de Waal, F.B.M. |
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Title |
Visual field information in the face perception of chimpanzees (Pan troglodytes) |
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Journal Article |
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Year |
2003 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1000 |
Issue |
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Pages |
94-98 |
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Keywords |
Animals; *Facial Expression; Pan troglodytes; Recognition (Psychology); Visual Fields/*physiology; Visual Perception/*physiology |
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Abstract |
Evidence for a visual field advantage (VFA) in the face perception of chimpanzees was investigated using a modification of a free-vision task. Four of six chimpanzee subjects previously trained on a computer joystick match-to-sample paradigm were able to distinguish between images of neutral face chimeras consisting of two left sides (LL) or right sides (RR) of the face. While an individual's ability to make this distinction would be unlikely to determine their suitability for the VFA tests, it was important to establish that distinctive information was available in test images. Data were then recorded on their choice of the LL vs. RR chimera as a match to the true, neutral image; a bias for one of these options would indicate an hemispatial visual field advantage. Results suggest that chimpanzees, unlike humans, do not exhibit a left visual field advantage. These results have important implications for studies on laterality and asymmetry in facial signals and their perception in primates. |
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Department of Animal Science, Cornell University, Ithaca, New York 14853, USA. jmp63@cornell.edu |
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ISSN |
0077-8923 |
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Notes |
PMID:14766624 |
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no |
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Call Number |
refbase @ user @ |
Serial |
175 |
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Author |
de Waal, F.B.M. |
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Title |
Darwin's legacy and the study of primate visual communication |
Type |
Journal Article |
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Year |
2003 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1000 |
Issue |
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Pages |
7-31 |
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Keywords |
Affect; Aggression/psychology; Animals; Culture; *Evolution; *Facial Expression; Gestures; Grooming; Humans; Laughter; *Nonverbal Communication; Primates/*physiology; Smiling; *Visual Perception |
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Abstract |
After Charles Darwin's The Expression of the Emotions in Man and Animals, published in 1872, we had to wait 60 years before the theme of animal expressions was picked up by another astute observer. In 1935, Nadezhda Ladygina-Kohts published a detailed comparison of the expressive behavior of a juvenile chimpanzee and of her own child. After Kohts, we had to wait until the 1960s for modern ethological analyses of primate facial and gestural communication. Again, the focus was on the chimpanzee, but ethograms on other primates appeared as well. Our understanding of the range of expressions in other primates is at present far more advanced than that in Darwin's time. A strong social component has been added: instead of focusing on the expressions per se, they are now often classified according to the social situations in which they typically occur. Initially, quantitative analyses were sequential (i.e., concerned with temporal associations between behavior patterns), and they avoided the language of emotions. I will discuss some of this early work, including my own on the communicative repertoire of the bonobo, a close relative of the chimpanzee (and ourselves). I will provide concrete examples to make the point that there is a much richer matrix of contexts possible than the common behavioral categories of aggression, sex, fear, play, and so on. Primate signaling is a form of negotiation, and previous classifications have ignored the specifics of what animals try to achieve with their exchanges. There is also increasing evidence for signal conventionalization in primates, especially the apes, in both captivity and the field. This process results in group-specific or “cultural” communication patterns. |
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Address |
Yerkes Primate Center, and Psychology Department, Emory University, Atlanta, Georgia 30322, USA. dewaal@emory.edu |
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0077-8923 |
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Notes |
PMID:14766618 |
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no |
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Call Number |
refbase @ user @ |
Serial |
177 |
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Author |
Parish, A.R.; De Waal, F.B. |
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Title |
The other “closest living relative”. How bonobos (Pan paniscus) challenge traditional assumptions about females, dominance, intra- and intersexual interactions, and hominid evolution |
Type |
Journal Article |
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Year |
2000 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
907 |
Issue |
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Pages |
97-113 |
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Keywords |
Animals; *Evolution; Female; Hominidae/*physiology; Humans; *Interpersonal Relations; Male; Pan paniscus/*physiology; Sexual Behavior, Animal/*physiology |
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Abstract |
Chimpanzee (Pan troglodytes) societies are typically characterized as physically aggressive, male-bonded and male-dominated. Their close relatives, the bonobos (Pan paniscus), differ in startling and significant ways. For instance, female bonobos bond with one another, form coalitions, and dominate males. A pattern of reluctance to consider, let alone acknowledge, female dominance in bonobos exists, however. Because both species are equally “man's” closest relative, the bonobo social system complicates models of human evolution that have historically been based upon referents that are male and chimpanzee-like. The bonobo evidence suggests that models of human evolution must be reformulated such that they also accommodate: real and meaningful female bonds; the possibility of systematic female dominance over males; female mating strategies which encompass extra-group paternities; hunting and meat distribution by females; the importance of the sharing of plant foods; affinitive inter-community interactions; males that do not stalk and attack and are not territorial; and flexible social relationships in which philopatry does not necessarily predict bonding pattern. |
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Department of Anthropology, University College London, England |
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0077-8923 |
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Notes |
PMID:10818623 |
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Call Number |
refbase @ user @ |
Serial |
189 |
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Author |
Judge, P.G.; de Waal, F.B.; Paul, K.S.; Gordon, T.P. |
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Title |
Removal of a trauma-inflicting alpha matriline from a group of rhesus macaques to control severe wounding |
Type |
Journal Article |
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Year |
1994 |
Publication |
Laboratory animal science |
Abbreviated Journal |
Lab Anim Sci |
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Volume |
44 |
Issue |
4 |
Pages |
344-350 |
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Keywords |
*Aggression; Animals; Female; *Macaca mulatta; Male; *Monkey Diseases; *Social Dominance; Wounds and Injuries/epidemiology/prevention & control/*veterinary |
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Abstract |
Wounding in an 83-member group of rhesus macaques (Macaca mulatta) housed at the Yerkes Regional Primate Research Center Field Station became excessive to the point that intervention was deemed necessary. When observations indicated that three females from the group's alpha matriline were principally responsible for the wounding, the matriline (N = 7) was removed from the group. This study was conducted to document an atypical pattern of wounding in this group and to evaluate the effectiveness of removal as a procedure for controlling injuries. The aggression rates of 21 adult subjects and the wounds of all group members were recorded before and after the removal procedure and compared with those in a similar-sized group. Removing the alpha matriline did not alter aggression rates in the group or the rank order among the remaining matrilines. Aggression rates in the experimental group were also not significantly different from those in the comparison group before or after the removal. With the alpha matriline present, wounding levels in the group were significantly higher than those in the comparison group. After removal of the matriline, the frequency of wounds decreased significantly to levels similar to those of the comparison group. The pattern of excess wounding attributed to the extracted alpha females was idiosyncratic, involving removal of large patches of skin from the hindquarters of adult females or removal of the distal portion of the fingers, toes, or tail from juveniles.(ABSTRACT TRUNCATED AT 250 WORDS) |
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Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30329 |
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0023-6764 |
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PMID:7983846 |
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no |
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refbase @ user @ |
Serial |
207 |
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Author |
Clement, T.S.; Zentall, T.R. |
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Title |
Development of a single-code/default coding strategy in pigeons |
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Journal Article |
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Year |
2000 |
Publication |
Psychological science : a journal of the American Psychological Society / APS |
Abbreviated Journal |
Psychol Sci |
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Volume |
11 |
Issue |
3 |
Pages |
261-264 |
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Keywords |
Animals; Attention; Columbidae; *Discrimination Learning; Female; Male; *Pattern Recognition, Visual; *Problem Solving; Retention (Psychology) |
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Abstract |
We tested the hypothesis that pigeons could use a cognitively efficient coding strategy by training them on a conditional discrimination (delayed symbolic matching) in which one alternative was correct following the presentation of one sample (one-to-one), whereas the other alternative was correct following the presentation of any one of four other samples (many-to-one). When retention intervals of different durations were inserted between the offset of the sample and the onset of the choice stimuli, divergent retention functions were found. With increasing retention interval, matching accuracy on trials involving any of the many-to-one samples was increasingly better than matching accuracy on trials involving the one-to-one sample. Furthermore, following this test, pigeons treated a novel sample as if it had been one of the many-to-one samples. The data suggest that rather than learning each of the five sample-comparison associations independently, the pigeons developed a cognitively efficient single-code/default coding strategy. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506, USA |
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0956-7976 |
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PMID:11273414 |
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refbase @ user @ |
Serial |
246 |
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