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Author Crook, J.H.
Title On attributing consciousness to animals Type Journal Article
Year 1983 Publication Nature Abbreviated Journal (down) Nature
Volume 303 Issue 5912 Pages 11-14
Keywords Animals; *Behavior, Animal; Cognition; *Consciousness; Evolution; Learning
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ISSN 0028-0836 ISBN Medium
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Notes PMID:6843653 Approved no
Call Number Equine Behaviour @ team @ Serial 2795
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Author Berger, J.
Title Induced abortion and social factors in wild horses Type Journal Article
Year 1983 Publication Nature Abbreviated Journal (down) Nature
Volume 303 Issue 5912 Pages 59-61
Keywords Abortion, Induced/*veterinary; Abortion, Veterinary/*etiology; Aggression/physiology; Animals; Evolution; Female; Horses/*physiology; Humans; Pregnancy; Sexual Behavior, Animal/*physiology
Abstract Much evidence now suggests that the postnatal killing of young in primates and carnivores, and induced abortions in some rodents, are evolved traits exerting strong selective pressures on adult male and female behaviour. Among ungulates it is perplexing that either no species have developed convergent tactics or that these behaviours are not reported, especially as ungulates have social systems similar to those of members of the above groups. Only in captive horses (Equus caballus) has infant killing been reported. It has been estimated that 40,000 wild horses live in remote areas of the Great Basin Desert of North America (US Department of Interior (Bureau of Land Management), unpublished report), where they occur in harems (females and young) defended by males. Here I present evidence that, rather than killing infants directly, invading males induce abortions in females unprotected by their resident stallions and these females are then inseminated by the new males.
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ISSN 0028-0836 ISBN Medium
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Notes PMID:6682487 Approved no
Call Number Equine Behaviour @ team @ Serial 4365
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Author Grobler, J. H.
Title Feeding habits of the cape mountain zebra Type Journal Article
Year 1983 Publication Abbreviated Journal (down) Koedoe
Volume 26 Issue Pages 159-168
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1127
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Author Kaseda Y,
Title Seasonal changes in time spent grazing and resting of Misaki horses Type Journal Article
Year 1983 Publication Abbreviated Journal (down) Jpn J Zootechn Sci
Volume 54 Issue Pages 464-469
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1235
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Author Kaseda Y,
Title Seasonal changes in the home range and the size of harem groups of Misaki horses Type Journal Article
Year 1983 Publication Abbreviated Journal (down) Jpn J Zootech Sci
Volume 54 Issue Pages 254-262
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1234
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Author Kirkpatrick, J. F.; Turner, J. W.
Title Seasonal ovarian function in feral mares: seasonal patterns of LH, progestins and estrogens in feral mares Type Journal Article
Year 1983 Publication Journal of Equine Veterinary Science Abbreviated Journal (down) J. Equine Vet. Sci.
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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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2325
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Author Duncan, P.
Title Determinants of the use of habitat by horses in a mediterranean wetland Type Journal Article
Year 1983 Publication Abbreviated Journal (down) J. Anim. Ecol.
Volume 52 Issue Pages 93-109
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1031
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Author Berger J,
Title Predation, sex ratios, and male competition in equids Type Journal Article
Year 1983 Publication Abbreviated Journal (down) J Zool Lond
Volume 201 Issue Pages 205-216
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 939
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Author BERGER J et al,
Title Chemical restraint of wild horses: Effects on reproduction and social structure Type Journal Article
Year 1983 Publication Abbreviated Journal (down) J Wildl Diseases
Volume 19 Issue Pages 265-268
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 941
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Author Miller R,
Title Habitat use of feral horses and cattle in Wyoming's Red Desert Type Journal Article
Year 1983 Publication Abbreviated Journal (down) J Range Mgmt
Volume 36 Issue Pages 195-199
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1395
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