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Author (up) Appleby, M.C.
Title Social Rank and Food Access in Red Deer Stags Type Journal Article
Year 1980 Publication Behaviour Abbreviated Journal Behaviour
Volume 74 Issue Pages 294-309
Keywords
Abstract The behaviour of a free-living group of male red deer (Cervus elaphus L.) on the Isle of Rhum, Scotland, was studied throughout the year to investigate the relations between social dominance and food access. The study is based on the collection of agonistic interactions between members of the study group outside the rutting season. Analysis of these confirmed that dyadic dominance relationships summate to a very clear agonistic hierarchy, while seasonal changes in frequency and type of interactions suggested that rank in the hierarchy may affect access to food through direct feeding interference. This would constitute a selective advantage of the acquisition of high rank. A behaviour pattern in which a stag displaces a subordinate and takes over his feeding-site is proposed as a mechanism of direct feeding interference. It occurs throughout the year, but with a frequency closely related to changes in food availability and quality. The proportion of such interactions that an individual wins is related to his rank, so advantages gained from this behaviour would primarily benefit high-ranking stags. These are likely to consist of improved body condition and winter survival. The importance of high rank in obtaining access to limited food was supported by the results of a simple experiment providing a small area of fertilized grass. Most of the grazing in the area was due to the highest-ranking stag present at any time.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4860
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Author (up) Asa, C.S.; Goldfoot, D.A.; Garcia, M.C.; Ginther, O.J.
Title Dexamethasone suppression of sexual behavior in the ovariectomized mare Type Journal Article
Year 1980 Publication Hormones and Behavior Abbreviated Journal Horm Behav
Volume 14 Issue 1 Pages 55-64
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Abstract The influence of steroids of adrenal cortical origin on estrous behavior in the ovariectomized mare was evaluated by adrenal suppression via dexamethasone (DEX) administration in two experiments. In Experiment I, 12 mares (six DEX, six control) were tested for sexual behavior in harem groups (two DEX and two control mares plus one stallion per group) for 9 consecutive days. In Experiment II, estradiol (E2) was given to a group of DEX-treated mares as an additional control. Twelve mares (four DEX, four DEX + E2, and four control) were tested in harem groups (one DEX, one DEX + E2, and one control mare plus one stallion per group) for 10 days. All DEX mares showed a clear suppression of sexual response compared to control or DEX + E2 mares, indicating that the estrous behavior seen in ovariectomized mares may be due to steroids from the adrenal cortex. The control and DEX + E2 mares were similar in all measures of proceptivity. Despite being more receptive, as indicated by fewer negative responses, the DEX + E2 mares received fewer intromissions and ejaculations than did the control animals. The ability of estradiol to induce estrous behavior in the dexamethasone-suppressed mare notwithstanding, other adrenal steroids, e.g., androgens, may be involved in estrous behavior in the untreated, ovariectomized mare.
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ISSN 0018-506x ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5360
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Author (up) Asa, C.S.; Goldfoot, D.A.; Garcia, M.C.; Ginther, O.J.
Title Sexual behavior in ovariectomized and seasonally anovulatory pony mares (Equus caballus) Type Journal Article
Year 1980 Publication Hormones and Behavior Abbreviated Journal Horm Behav
Volume 14 Issue 1 Pages 46-54
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Abstract Ten ovariectomized (OVEX) and ten intact, but seasonally anovulatory (ANOV), pony mares were observed for sexual activity with five stallions, using a “harem group” social testing paradigm (two OVEX and two ANOV mares plus one stallion per group) for 15 consecutive daily tests lasting 20 min each. All mares in both conditions showed proceptive behavior in at least one test, all mares but one were mounted, and 14 of 20 mares received ejaculations. No statistical differences were found between the two conditions for any measure of proceptivity, copulatory activity, or days in estrus. The quality of estrus was judged to be equivalent to that displayed by periovulatory mares during their initial and terminal days of estrus, but less intense than that seen near ovulation. Mares in both groups were in estrus during approximately 60-70% of the tests and only 3 of the 20 mares were sexually refractory for more than five consecutive tests. Thus, the typical 2-week phase of sexual refractoriness seen in intact diestrous mares was absent in OVEX and ANOV mares, suggesting that the ovary plays a major role in actively suppressing estrous responses during the luteal phase of the cycle.
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ISSN 0018-506x ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5361
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Author (up) Beck, B. B.
Title Animal tool behaviour: The use and manufacture of tools by animals Type Book Whole
Year 1980 Publication Abbreviated Journal
Volume Issue Pages
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Publisher Garland Place of Publication New York Editor
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6524
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Author (up) Bennett Dk,
Title Stripes do not a zebra make, Part I: A cladistic analysis of Equus Type Journal Article
Year 1980 Publication Systematic Zoology Abbreviated Journal Syst Zool
Volume 29 Issue 2 Pages 272-287
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 932
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Author (up) Bradley, B.L.
Title Animal flavor types and their specific uses in compound feeds by species and age Type Journal Article
Year 1980 Publication Fortschritte in der Tierphysiologie und Tierernahrung Abbreviated Journal Fortschr Tierphysiol Tierernahr
Volume Issue 11 Pages 110-122
Keywords Aging; *Animal Feed; Animals; Cattle; Energy Intake; *Flavoring Agents; Horses; Poultry; Smell; Species Specificity; Sweetening Agents; Swine; Taste
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Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0301-570X ISBN Medium
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Notes PMID:7390352 Approved no
Call Number Equine Behaviour @ team @ Serial 4314
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Author (up) Brügger, A.
Title Die Erkrankungen des Bewegungsapparates und seines Nervensystems. Type Book Whole
Year 1980 Publication Abbreviated Journal
Volume Issue Pages
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Publisher Gustav Fischer Place of Publication Stuttgart Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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ISSN ISBN 3437105051 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4440
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Author (up) Brügger, A.
Title Gesunde Körperhaltung im Alltag Type Book Whole
Year 1980 Publication Abbreviated Journal
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Publisher Dr. A. Brügger Place of Publication Zürich Editor
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4451
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Author (up) Bunnell, B.; Gore, W.; Perkins, M.
Title Performance correlates of social behavior and organization: Social rank and reversal learning in crab-eating macaques (M. fascicularis) Type Journal Article
Year 1980 Publication Primates Abbreviated Journal Primates
Volume 21 Issue 3 Pages 376-388
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Abstract Abstract  Seventeen male crab-eating macaques drawn from two captive troops, were tested on a brightness discrimination, reversal learning task. Fourteen of these animals completed ten reversals. It was found that the performance of the three highest ranking animals from each troop, taken together, was poorer than that of the lower ranking animals that were tested. The high ranking animals made more errors before reaching criterion on both initial learning and the reversal problems. Analysis of error patterns revealed that, while the high ranking animals had no more difficulty than the others in withholding their responses to the previously correct stimulus following reversals, they did not adopt the correct strategy as soon as the low ranking animals. The results have been interpreted in terms of a carry-over of a hypothetical factor or factors resulting from pressures created by the ongoing social dynamics involved in establishing and maintaining a given social rank at the time laboratory testing occurred.
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Notes Approved no
Call Number Serial 2083
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Author (up) Bunnell, B.; Perkins, M.
Title Performance correlates of social behavior and organization: Social rank and complex problem solving in crab-eating macaques (M. fascicularis) Type Journal Article
Year 1980 Publication Primates Abbreviated Journal Primates
Volume 21 Issue 4 Pages 515-523
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Abstract Abstract  Seventeen male crab-eating macaques, drawn from two captive troops, were tested on a series of complex problem solving tasks in a Wisconsin General Test Apparatus (wgta). The animals were trained on a series of 6-trial object quality learning set problems followed by a series of 10-trial object quality learning set problems. They were then given problems in which the correct stimulus object was reversed part way through the problem. After the animals reached criterion on this task, the reversal learning set was then extinguished. High ranking animals made more intraproblem errors than low ranking animals on the 6-trial problems, but there was no relationship between social status and the rapidity with which the object quality learning set was established. Animals that received overtraining on the 6-trial problems transferred their learning virtually intact to the 10-trial problems; however, high ranking animals without overtraining made more errors than low ranking animals. On reversal learning and reversal extinction, high ranking animals made more errors on critical trials, indicating that they formed and extinguished the reversal set more slowly than low ranking animals. Object quality sets, as measured by trial-2 performance, were not affected by the reversal conditions.
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Notes Approved no
Call Number Serial 2082
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