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Author |
Henneke, D.R.; Potter, G.D.; Kreider, J.L.; Yeates, B.F. |
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Title |
Relationship between condition score, physical measurements and body fat percentage in mares |
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Journal Article |
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Year |
1983 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
15 |
Issue |
4 |
Pages |
371-372 |
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Keywords |
*Adipose Tissue; Animals; Biometry; Body Weight; Female; Heart/anatomy & histology; Horses/anatomy & histology/*physiology; *Reproduction |
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English |
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0425-1644 |
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PMID:6641685 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2299 |
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Author |
KAUFMANN, J. H. |
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Title |
ON THE DEFINITIONS AND FUNCTIONS OF DOMINANCE AND TERRITORIALITY |
Type |
Journal Article |
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Year |
1983 |
Publication |
Biological Reviews |
Abbreviated Journal |
Biol Rev |
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Volume |
58 |
Issue |
1 |
Pages |
1-20 |
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Abstract |
1. Dominance/subordinance is a relationship between two individuals in which one defers to the other in contest situations. Each such relationship represents an adaptive compromise for each individual in which the benefits and costs of giving in or not giving in are compared. Familiar associates in groups or neighbours on nearby territories may develop relatively stable dominant-subordinate relationships based on individual recognition. Although the aggressive aspects of dominance are usually emphasized, the less conspicuous actions of the subordinate individual are actually more important in maintaining a stable relationship. 2. In evolutionary terms, dominance essentially equals priority of access to resources in short supply. Usually the subordinate, who would probably lose in combat anyway, is better off to bide its time until better able to compete at another time or another place. Both individuals save time, energy, and the risk of injury by recognizing and abiding by an established dominant-subordinate relationship. 3. Dominance can be either absolute or predictably reversible in different locations or at different times. Of the various forms of dominance behaviour, rank hierarchies and territoriality represent the two extremes of absolute and relative dominance, respectively. A dominance hierarchy is the sum total of the adaptive compromises made between individuals in an aggregation or organized group. Many animals seem to be capable of both absolute and relative dominance, and within species-specific limits the balance may shift toward one or the other. High density, or a decrease in available resources, favours a shift from relative to absolute dominance. Some species may exhibit both simultaneously. Social mammals may have intra-group hierarchies and reciprocal territoriality between groups, while the males of lek species may exhibit 'polarized territoriality' by defending small individual territories, with the most dominant males holding the central territories where most of the mating takes place. 4. Territoriality is a form of space-related dominance. Most biologists agree that its most important function is to provide the territory holder with an assured supply of critical resources. Territoriality is selected for only when the individual's genetic fitness is increased because its increased access to resources outweighs the time, energy, and injury costs of territorial behaviour. 5. Territoriality was first defined narrowly as an area from which conspecifics are excluded by overt defence or advertisement. The definition has been variously expanded to include all more or less exclusive areas without regard to possible defence, and finally to include all areas in which the owner is dominant. I define territory as a fixed portion of an individual's or group's range in which it has priority of access to one or more critical resources over others who have priority elsewhere or at another time. This priority of access must be achieved through social interaction. 6. My definition excludes dominance over individual space and moving resources, and includes areas of exclusive use maintained by mutual avoidance. It differs from most other definitions in its explicit recognition of time as a territorial parameter and its rejection of exclusivity and overt defence as necessary components of territorial behaviour. There is an indivisible continuum of degrees of trespass onto territories, and functionally it is priority of access to resources that is important rather than exclusive occupancy. 7. There is a similarly indivisible continuum in the intensity of behaviour needed to achieve priority of access to resources. Deciding whether or not an exclusive area is defended leads to the pointless exercise of trying to decide which cues indicating the owner's presence are conspicuous enough to merit being called defence. Concentrating on overt defence emphasizes the aggressive aspects of territorial behaviour rather than the equally or more important submissive aspects such as passive avoidance. |
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Department of Zoology, University of Florida, Gainesville, FL 32611, U.S.A. |
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Equine Behaviour @ team @ |
Serial |
5101 |
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Author |
Heffner, R.S.; Heffner, H.E. |
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Title |
Hearing in large mammals: Horses (Equus caballus) and cattle (Bos taurus) |
Type |
Journal Article |
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Year |
1983 |
Publication |
Behavioral Neuroscience |
Abbreviated Journal |
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Volume |
97 |
Issue |
2 |
Pages |
299-309 |
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Keywords |
auditory range & sensitivity, horses vs cattle |
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Abstract |
Determined behavioral audiograms for 3 horses and 2 cows. Horses' hearing ranged from 55 Hz to 33.3 kHz, with a region of best sensitivity from 1 to 16 kHz. Cattle hearing ranged from 23 Hz to 35 kHz, with a well-defined point of best sensitivity at 8 kHz. Of the 2 species, cattle proved to have more acute hearing, with a lowest threshold of –21 db (re 20 μN/m–2) compared with the horses' lowest threshold of 7 db. Comparative analysis of the hearing abilities of these 2 species with those of other mammals provides further support for the relation between interaural distance and high-frequency hearing and between high- and low-frequency hearing. (39 ref) (PsycINFO Database Record (c) 2012 APA, all rights reserved) |
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American Psychological Association |
Place of Publication |
Us |
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1939-0084(Electronic);0735-7044(Print) |
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Call Number |
Equine Behaviour @ team @ 1983-29540-001 |
Serial |
5633 |
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Author |
Kirkpatrick, J. F.; Turner, J. W. |
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Title |
Seasonal ovarian function in feral mares: seasonal patterns of LH, progestins and estrogens in feral mares |
Type |
Journal Article |
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Year |
1983 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
J. Equine Vet. Sci. |
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Volume |
3 |
Issue |
4 |
Pages |
113-118 |
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Abstract |
Blood was collected every 3 days for 13 months from 4 captured [female][female] of proven fertility kept adjacent to a teaser stallion. Basal plasma LH level was greater during Apr.-July (8.1+or-0.5 ng/ml) than during Nov.-Jan. (2.2+or-0.2). A total for 21 LH peaks occurred between 13 Apr. and 31 Aug. among the 4 [female][female]; many peaks exceeded 20 times the basal level, and there was a trend to a higher LH level with each succeeding peak. On all occasions except one, LH peaks were associated with progesterone levels of 0.5 ng/ml and with increases of oestrogen (peak average 43.1+or-12.1 pg/ml). Basal progesterone level during Apr.-July (1.5+or-1.2 ng/ml) did not differ significantly from that during Oct.-Jan. (1.1+or-0.7), nor did basal oestrogen level differ significantly between those 2 periods (8.4+or-3.2 and 12.9+or-4.6 pg/ml resp.). Behavioural oestrus always occurred with LH and oestrogen peaks during Apr.-July. However, behavioural oestrus was occasionally observed during Aug.-Oct., when LH peaks no longer occurred. |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2325 |
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Author |
Hinde, R.A. |
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Title |
A conceptural framework |
Type |
Book Chapter |
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Year |
1983 |
Publication |
Primate Social Relationships |
Abbreviated Journal |
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Pages |
1-7 |
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Sinauer, Sunderland |
Place of Publication |
Massechusetts |
Editor |
Hinde, R.A |
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Call Number |
refbase @ user @ |
Serial |
818 |
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Author |
Becker C, |
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Title |
Grevy's zebra of Smburu Keya: Mother-infant behavior |
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Manuscript |
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Year |
1983 |
Publication |
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Abbreviated Journal |
Yale Univ |
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Master's thesis |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
926 |
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Author |
Berger J, |
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Title |
Predation, sex ratios, and male competition in equids |
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Journal Article |
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Year |
1983 |
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Abbreviated Journal |
J Zool Lond |
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Volume |
201 |
Issue |
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Pages |
205-216 |
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from Professor Hans Klingels Equine Reference List |
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939 |
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Author |
BERGER J et al, |
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Title |
Chemical restraint of wild horses: Effects on reproduction and social structure |
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Journal Article |
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Year |
1983 |
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Abbreviated Journal |
J Wildl Diseases |
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Volume |
19 |
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Pages |
265-268 |
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from Professor Hans Klingels Equine Reference List |
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941 |
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Author |
Duncan, P. |
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Title |
Determinants of the use of habitat by horses in a mediterranean wetland |
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Journal Article |
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Year |
1983 |
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Abbreviated Journal |
J. Anim. Ecol. |
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Volume |
52 |
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Pages |
93-109 |
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from Professor Hans Klingels Equine Reference List |
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1031 |
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Author |
Grobler, J. H. |
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Title |
Feeding habits of the cape mountain zebra |
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Journal Article |
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Year |
1983 |
Publication |
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Abbreviated Journal |
Koedoe |
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Volume |
26 |
Issue |
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Pages |
159-168 |
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from Professor Hans Klingels Equine Reference List |
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Call Number |
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1127 |
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