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Author |
Rubenstein, D.I |
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Title |
Life history and social organization in arid adapted ungulates |
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Journal Article |
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Year |
1989 |
Publication |
Journal of Arid Environments |
Abbreviated Journal |
J. Arid. Environ. |
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17 |
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145-156 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1527 |
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Author |
Galef, B.G. |
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Title |
Enduring social enhancement of rats' preferences for the palatable and the piquant |
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Journal Article |
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Year |
1989 |
Publication |
Appetite |
Abbreviated Journal |
Appetite |
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Volume |
13 |
Issue |
2 |
Pages |
81-92 |
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Abstract |
In three experiments on the social induction of food preferences in rats, I found: (a) that eight 30-min exposures of a naive “observer” rat to a “demonstrator” rat fed one of two approximately equipalatable diets produced observer preference for the diet fed to its demonstrator that lasted for more than a month, (b) that simple exposure of naive subjects to a diet itself, rather than to a rat that had eaten a diet, was not sufficient to enhance preference for that diet, and (c) that lasting preference for an unpalatable, piquant diet could also be established by exposing naive rats to demonstrators that had eaten the piquant diet, but not by simply exposure to the piquant diet itself. These findings are consistent with the hypothesis proposed by both Birch and Rozin that social-affective contexts are important in establishing stable, learned preferences for foods. |
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0195-6663 |
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Call Number |
Equine Behaviour @ team @ |
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6567 |
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Author |
Gao, X; Gu, J. |
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Title |
The distribution and status of the Equidae in China. |
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Journal Article |
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Year |
1989 |
Publication |
Acta Theriologica Sinica |
Abbreviated Journal |
Acta Theriol. Sin. |
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9 |
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4 |
Pages |
269-274 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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1101 |
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Author |
Klingel, H. |
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Title |
Odd-toed Ungulates, Horses |
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Year |
1989 |
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Grzimek's Encyclopedia of Mammals |
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4 |
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550+557-594 |
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McGraw Hill |
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Grzimek, B. |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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Call Number |
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Serial |
1320 |
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Author |
Rubenstein, D.I.; Hohmann, M.E |
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Title |
Parasites and Social Behavior of Island Feral Horses |
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Journal Article |
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Year |
1989 |
Publication |
Oikos |
Abbreviated Journal |
Oikos |
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3 |
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Pages |
312-320 |
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The horses of Shackelford Banks, North Carolina, USA, are heavily parasitized by intestinal worms and harassed by dipterans, and although both types influence behavior only internal parasites affect bodily condition and the structuring of horse society. Thirteen species of internal parasites were identified, but only 4 of 13 groups contain them all and even within groups differences among individuals are large. Among individuals ova emissions vary ranging from 50 to 76,875 eggs per gram. The most important environmental factors influencing egg production are season and a group's location on the island, presumably because of salinity and soil differences and their effects on ova survival. Of the social and life history factors, age, and group size, but neither reproductive state nor dominance status are important. The fitness consequences of internal parasitism may be large since the number emitted is negatively correlated with next year's bodily condition. Biting fly burdens are also affected by a variety of environmental factors. In general, horses are covered with more flies on sunny days, when winds are moderately brisk, when occupying dunes, and around mid-day. In contrast to endoparasites, fly burden is affected by reproductive condition and dominance status and tends to decrease as groups increase in size. Since groups do not grow very large, nor do females attempt to bring groups together, the negative effects of endoparasites appear to overide those associated with ectoparasites. Consequently, endoparasites appear to exert a stronger influence on social structure, even though ectoparasites seem to play a stronger role in shaping details of behavior. |
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Equine Behaviour @ team @ |
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2360 |
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Author |
Harrington, F.H. |
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Title |
Chorus howling by wolves: Acoustic structures, pack size and Beau Geste effect |
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Journal Article |
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Year |
1989 |
Publication |
Bioacoustics |
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Volume |
2 |
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Equine Behaviour @ team @ Harrington1989 |
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6463 |
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Author |
Trim, C.M.; Moore, J.N.; Clark, E.S. |
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Title |
Renal effects of dopamine infusion in conscious horses |
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Journal Article |
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Year |
1989 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Issue |
7 |
Pages |
124-128 |
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Keywords |
Animals; Blood Pressure/drug effects/physiology; Consciousness/*physiology; Creatinine/blood; Dopamine/administration & dosage/*pharmacology; Dose-Response Relationship, Drug; Female; Heart Rate/drug effects/physiology; Horses/*physiology; Infusions, Intravenous/veterinary; Kidney/blood supply/*drug effects/physiology; Osmolar Concentration; Potassium/blood; Random Allocation; Regional Blood Flow/drug effects/physiology; Renal Artery/drug effects/physiology/ultrasonography; Sodium/blood; Time Factors; Ultrasonography/methods/veterinary; Urination/physiology |
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Abstract |
An ultrasonic flow probe was implanted around a branch of the left renal artery in five horses. The effects of dopamine were studied in the unsedated horses 10 days after surgery. Three experiments, separated by at least two days, were performed in random order on each horse. In two experiments, dopamine was infused intravenously for 60 mins at either 2.5 and 5.0 micrograms/kg bodyweight (bwt)/min. Saline was infused for 60 mins before and after each infusion, and for 180 mins in the third experiment as a control. Renal blood flow increased during administration of dopamine at both dose rates (P = 0.0001). Urine volume increased (P = 0.055), and osmolality decreased (P < 0.05), with infusion of dopamine at 5.0 micrograms/kg bwt/min. Arterial blood pressure and heart rate were not significantly affected. Fractional excretions of sodium and potassium were not significantly changed with dopamine infusion. The higher dopamine dose rate was accompanied by dysrhythmias in some horses. |
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Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602, USA |
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English |
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Notes |
PMID:9118094 |
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Call Number |
refbase @ user @ |
Serial |
99 |
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Author |
Rau, R.E, |
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Title |
The museum's Quagga project |
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Manuscript |
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Year |
1989 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1500 |
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Author |
Kaplan, A.I.; Borodovskii, M.I. |
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Title |
[Alternative animal behavior: a model and its statistical characteristics] |
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Year |
1989 |
Publication |
Nauchnye Doklady Vysshei Shkoly. Biologicheskie Nauki |
Abbreviated Journal |
Nauchnye Doki Vyss Shkoly Biol Nauki |
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3 |
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29-32 |
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Animals; *Behavior, Animal; Cognition; Male; Mathematics; *Models, Biological; *Models, Statistical; Rats; Reinforcement (Psychology) |
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The rats' alternative behaviour in T-maze at simultaneous two-sided food refreshment in 13 trials a day during 6 days has been studied. It has been found that in the first testing days the indexes of alternative behaviour of animals correspond to the characteristics of the random alternation. However, on the 5-6th day of testing in the overwhelming majority of rats the true deviation of alternation index above or below than the theoretical values has been revealed. A question on the existence of two strategies of cognitive behaviour alteration and perseveration in rat population is under discussion. |
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Russian |
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Al'ternativnoe povedenie zhivotnykh: model' i statisticheskie kharakteristiki |
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0470-4606 |
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PMID:2742929 |
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Equine Behaviour @ team @ |
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2799 |
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Author |
de Waal, F. B. |
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Title |
Dominance “style” and primate social organization. |
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Book Chapter |
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Year |
1989 |
Publication |
Comparative Socioecology |
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Pages |
243-263 |
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Blackwell Science |
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Standen, V.; Foley, R. A. |
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978-0632023615 |
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refbase @ user @ |
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2864 |
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