Records |
Author |
Li, C.; Jiang, Z.; Tang, S.; Zeng, Y. |
Title |
Influence of enclosure size and animal density on fecal cortisol concentration and aggression in Pere David's deer stags |
Type |
Journal Article |
Year |
2007 |
Publication |
General and Comparative Endocrinology |
Abbreviated Journal |
Gen Comp Endocrinol |
Volume |
151 |
Issue |
2 |
Pages |
202-209 |
Keywords |
*Aggression; Animals; *Deer; *Environment; Feces/*chemistry; Handling (Psychology); Housing, Animal; Hydrocortisone/*analysis; Male; Population Density |
Abstract |
We investigated the impact of enclosure size and animal density on behavior and adrenocortical secretion in Pere David's deer in Dafeng Nature Reserve, China. From February 15 to April 16 in 2004, we conducted two experiments. First, we studied maintenance behavior and conflict behavior of Pere David's deer stags in a large enclosure (200 ha) with low animal density (0.66 deer/ha) and a small display pen (0.75 ha) with high animal density (25.33 deer/ha). The maintenance behavior we recorded included standing, locomotion, foraging and rest. During the behavioral observations, we collected fresh voided fecal samples from the stags periodically, and analyzed the fecal cortisol concentrations in those samples using radioimmunoassay technique. Second, we monitored the fecal cortisol concentrations of one group of stags (12 deer lived in an enclosure of 100 ha) before and after transferred into a small pen (0.5 ha). We found that in the first experiment: (1) there were significant differences in standing and rest whereas no significant differences of locomotion and foraging between the free-ranging group and the display group; (2) frequency of conflict behavior in the display group was significantly higher than those in the free-ranging group; and (3) fecal cortisol concentration of the display group (326.17+/-16.98 ng/g dry feces) was significantly higher than that of the free-ranging group (268.98+/-15.21 ng/g dry feces). In the second experiment, there was no significant difference of the fecal cortisol concentrations among sampling days, but the mean fecal cortisol concentration of the day after transferring (337.46+/-17.88 ng/g dry feces) was significantly higher than that of the day before transferring (248.44+/-7.99 ng/g dry feces). Comparison with published findings, our results indicated that enclosure size and animal density affect not only behaviors, but also adrenocortical secretion in Pere David's deer. Small living space with high animal density may impose physiological stress to captive Pere David's deer. Moreover, long-term physiological stress and increase of conflict behavior may subsequently affect survival and reproduction of the deer. |
Address |
Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China |
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ISSN |
0016-6480 |
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Notes |
PMID:17324429 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
5475 |
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Author |
Clark, M.L.; Ayers, M. |
Title |
Friendship similarity during early adolescence: gender and racial patterns |
Type |
Journal Article |
Year |
1992 |
Publication |
The Journal of Psychology |
Abbreviated Journal |
J Psychol |
Volume |
126 |
Issue |
4 |
Pages |
393-405 |
Keywords |
Achievement; Adolescent; African Americans/*psychology; *Cross-Cultural Comparison; Female; *Gender Identity; Humans; Individuality; *Interpersonal Relations; Male; *Personality Development; Personality Inventory; Sociometric Techniques |
Abstract |
We studied the relationship of reciprocity, gender, and racial composition (Caucasian, African American, cross-race) of adolescent friendship dyads to similarity and proximity in 136 young adolescents. We found that adolescents selected friends who were of the same gender and race and that female dyads were more similar than male dyads on verbal achievement and several personality dimensions. Caucasian dyads were more similar than African American dyads on verbal achievement, mental alertness, and dominance. African American adolescents had more contact with their best friends outside school, whereas Caucasian adolescent friends had more in-school contact. African American students had fewer reciprocal relationships than the Caucasian students. Cross-race friendships were less reciprocal than same-race friendships. Race and gender were important in determining friendship patterns. Similarity and proximity were more important than reciprocity in understanding early adolescent friendships. |
Address |
Department of Psychology, Virginia Commonwealth University |
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0022-3980 |
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PMID:1403972 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
5628 |
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Author |
Köhler, W. |
Title |
Intelligenzprüfungen an Menschenaffen |
Type |
Book Whole |
Year |
1921 |
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Keywords |
Animal intelligence , Chimpanzees , Primates , Psychology |
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Springer |
Place of Publication |
Berlin |
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German |
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no |
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Equine Behaviour @ team @ |
Serial |
5752 |
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Author |
Harlow, H.F. |
Title |
Learning and satiation of response in intrinsically motivated complex puzzle performance by monkeys |
Type |
Journal Article |
Year |
1950 |
Publication |
Journal of Comparative and Physiological Psychology |
Abbreviated Journal |
J Comp Physiol Psychol |
Volume |
43 |
Issue |
4 |
Pages |
289-294 |
Keywords |
Animals; *Haplorhini; *Learning; *Motivation; *Psychology; *Satiation; *Learning; *Motivation; *Psychology |
Abstract |
Two rhesus monkeys, given 60 two-hour sessions with a six-device mechanical puzzle showed clear evidence of learning, the curve showing ratio of incorrect to correct responses appearing quite comparable to similar curves obtained during externally rewarded situations. When, on the thirteenth day of tests, the subjects were presented with the puzzle 100 times at 6-minute intervals, the number of devices manipulated decreased regularly throughout the day, although there was no significant change in the number of times the problem assembly was attacked. |
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0021-9940 |
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Notes |
PMID:15436888 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
6550 |
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Author |
Birch, H.G. |
Title |
The relation of previous experience to insightful problem-solving |
Type |
Journal Article |
Year |
1945 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J Comp Psychol |
Volume |
38 |
Issue |
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Pages |
367-383 |
Keywords |
Humans; *Problem Solving; *Psychology, Comparative; *PSYCHOLOGY/comparative |
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0021-9940 |
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PMID:21010765 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
6554 |
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Author |
Houpt, K.A. |
Title |
Why horse behaviour is important to the equine clinician |
Type |
Journal Article |
Year |
2006 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
Volume |
38 |
Issue |
5 |
Pages |
386-387 |
Keywords |
Accidents, Occupational/prevention & control; Aggression; Animals; *Behavior, Animal/physiology; Clinical Competence; Fear; Horses/*physiology; Humans; Veterinarians/psychology; Veterinary Medicine/*standards |
Abstract |
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Address |
Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853-6401, USA |
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0425-1644 |
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Notes |
PMID:16986596 |
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no |
Call Number |
refbase @ user @ |
Serial |
30 |
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Author |
Houpt, K.A. |
Title |
New perspectives on equine stereotypic behaviour |
Type |
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Year |
1995 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
Volume |
27 |
Issue |
2 |
Pages |
82-83 |
Keywords |
Animals; Horses/*psychology; Stereotyped Behavior/*physiology |
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0425-1644 |
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Notes |
PMID:7607153 |
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no |
Call Number |
refbase @ user @ |
Serial |
34 |
Permanent link to this record |
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Author |
Houpt, K.A.; Feldman, J. |
Title |
Animal behavior case of the month. Aggression toward a neonatal foal by its dam |
Type |
Journal Article |
Year |
1993 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
Volume |
203 |
Issue |
9 |
Pages |
1279-1280 |
Keywords |
Animals; Animals, Newborn; *Behavior, Animal; Female; Follow-Up Studies; Horses/*psychology; *Maternal Behavior; Rejection (Psychology); Restraint, Physical/veterinary |
Abstract |
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Address |
Department of Physiology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401 |
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0003-1488 |
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Notes |
PMID:8253618 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
36 |
Permanent link to this record |
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Author |
Houpt, K.A.; Smith, R. |
Title |
Animal behavior case of the month |
Type |
Journal Article |
Year |
1993 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
Volume |
203 |
Issue |
3 |
Pages |
377-378 |
Keywords |
Aggression; Animals; Animals, Zoo/*psychology; *Behavior, Animal; *Feeding Behavior; Female; Horses/*psychology; *Weaning |
Abstract |
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Address |
Department of Physiology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401 |
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0003-1488 |
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Notes |
PMID:8226214 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
37 |
Permanent link to this record |
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Author |
Houpt, K.A. |
Title |
Animal behavior and animal welfare |
Type |
Journal Article |
Year |
1991 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
Volume |
198 |
Issue |
8 |
Pages |
1355-1360 |
Keywords |
*Animal Welfare; Animals; *Behavior, Animal; Cats/*psychology; Hoof and Claw/surgery; Horses/*psychology; Housing, Animal |
Abstract |
The value of behavioral techniques in assessing animal welfare, and in particular assessing the psychological well being of animals, is reviewed. Using cats and horses as examples, 3 behavioral methods are presented: (1) comparison of behavior patterns and time budgets; (2) choice tests; and (3) operant conditioning. The behaviors of intact and declawed cats were compared in order to determine if declawing led to behavioral problems or to a change in personality. Apparently it did not. The behavior of free ranging horses was compared with that of stabled horses. Using two-choice preference tests, the preference of horses for visual contact with other horses and the preference for bedding were determined. Horses show no significant preference for locations from which they can make visual contact with other horses, but they do prefer bedding, especially when lying down. Horses will perform an operant response in order to obtain light in a darkened barn or heat in an outside shed. These same techniques can be used to answer a variety of questions about an animal's motivation for a particular attribute of its environment. |
Address |
New York State College of Veterinary Medicine, Cornell University, Ithaca 14853 |
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0003-1488 |
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Notes |
PMID:2061151 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
40 |
Permanent link to this record |