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Author |
Wolff, P.R.; Powell, A.J. |
Title |
Urine patterns in mice: An analysis of male/female counter-marking |
Type |
Journal Article |
Year |
1984 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
32 |
Issue |
4 |
Pages |
1185-1191 |
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Abstract |
Counter-marking in mice, Mus musculus was investigated by analysing urine deposition on filter paper marked asymmetrically with urine of the opposite sex. Intact males deposited large numbers of urine spots with a marked angular bias towards previously marked quadrants. More spots were deposited on proestrous and ovariectomized donor urine patterns, their distribution being more centrifugal on oestrous urine and more centripetal in quadrants containing a large female urine spot in a central position. In contrast, castrated male mice deposited very few spots with no angular bias. Female urine patterns showed angular bias in response to intact, but not castrated male donor urine, a larger number of spots being produced by oestrous females. Thus the pattern of deposition offers scope for two-way communication of information about reproductive potential. |
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2144 |
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Author |
McFarland, D.J. |
Title |
Roger L. Mellgren, Editor, Animal Cognition and Behavior, North-Holland, Amsterdam (1983), p. xi |
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Journal Article |
Year |
1984 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
32 |
Issue |
2 |
Pages |
634-635 |
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Equine Behaviour @ team @ |
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2925 |
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Author |
Sherry, D.F.; Galef Jr, B.G. |
Title |
Cultural transmission without imitation: Milk bottle opening by birds |
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Journal Article |
Year |
1984 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
Volume |
32 |
Issue |
3 |
Pages |
937-938 |
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0003-3472 |
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Equine Behaviour @ team @ |
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5611 |
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Author |
DUNCAN P et al, |
Title |
On lactation and associated behaviour in natural herd of horses |
Type |
Journal Article |
Year |
1984 |
Publication |
Anim Behav |
Abbreviated Journal |
Hans Klingels Equine Reference List |
Volume |
32 |
Issue |
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Pages |
255-263 |
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Developmental changes in time spent suckling and related mother-foal behaviour are described in an unmanaged herd of Camargue horses. Male foals spent about 40% more time suckling than females during the first 8 weeks. Body weight did not differ between the sexes but time-budgets did: males grazed less and were more active. If pregnant, the typical multiparous mare nursed her foals for 35–40 weeks, males and females alike, and weaned them 15 weeks before the next foaling. Primiparae lactated longer and weaned closer to the next foaling by 5 weeks. The mares played an active role in regulating the time spent suckling in early, and particularly in late lactation. |
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from Prof. |
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1033 |
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Author |
Keiper, R.; Houpt, K. |
Title |
Reproduction in feral horses: an eight-year study |
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Journal Article |
Year |
1984 |
Publication |
American journal of veterinary research |
Abbreviated Journal |
Am J Vet Res |
Volume |
45 |
Issue |
5 |
Pages |
991-995 |
Keywords |
Abortion, Veterinary/epidemiology; Anestrus; Animal Population Groups/*physiology; Animals; Animals, Wild/*physiology; Birth Rate; Female; Fertility; Horse Diseases/epidemiology; Horses/*physiology; Lactation; Male; Maryland; Pregnancy; *Reproduction; Seasons; Sex Ratio; Virginia |
Abstract |
The reproductive rate and foal survival of the free-ranging ponies on Assateague Island National Seashore were studied for 8 years, 1975 to 1982. Most (52%) of the 86 foals were born in May, 13% were born in April, 22.6% in June, 10.4% in July, and less than 1% in August and September. The mean foaling rate was 57.1 +/- 3.9% and the survival rate was 88.3 +/- 3.6%. Forty-eight colts and 55 fillies were born (sex ratio 53% female). Mares less than 3 years old did not foal and the foaling rate of 3-year-old mares was only 23%, that of 4-year-old mares was 46%, that of 5-year-old mares was 53%, and 6-year-old mares was 69%. The relatively poor reproduction rate was believed to be a consequence of the stress of lactating while carrying a foal when forage quality on the island was low. The hypothesis was supported by the higher reproductive rate (74.4 +/- 2.4%) of the ponies in the Chincoteague National Wildlife Refuge on the southern part of the island. Their foals are weaned and sold in July each year. Despite the low reproductive rate on Assateague Island National Seashore , the number of ponies increased from 43 to 80, a 90% increase in the 8-year period or greater than 10%/yr. There were 24 deaths and 8 dispersals from the study area. |
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English |
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0002-9645 |
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PMID:6732036 |
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refbase @ user @ |
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665 |
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Author |
BAGTACHE B et al, |
Title |
Paläontologie – Présence d`un Equus cacallin et d`une autre espéce nouvelle d`Equus dans l`Aterien des Allobroges, Agérie |
Type |
Journal Article |
Year |
1984 |
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C R Acad Sc Paris |
Volume |
298 |
Issue |
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Pages |
609-612 |
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from Professor Hans Klingels Equine Reference List |
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913 |
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Author |
Bard J, |
Title |
Perch la zebra In:Kos;Revista di Cultura e Storia della |
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Journal Article |
Year |
1984 |
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Sci Med, Nat e Humane |
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1 |
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6 |
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from Professor Hans Klingels Equine Reference List |
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no |
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922 |
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Author |
DUNCAN P et al, |
Title |
Reduction of inbreeding in a natural herd of horses |
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Journal Article |
Year |
1984 |
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Anim Beh av |
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32 |
Issue |
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520-527 |
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from Professor Hans Klingels Equine Reference List |
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1034 |
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Author |
Eisenmann V, |
Title |
Sur quelques caractères adaptatifs du squelette d`Equus et leurs implications paléoécologiques Bull |
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Journal Article |
Year |
1984 |
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Bull Mus natn Hist nat Paris |
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6 |
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185-195 |
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from Professor Hans Klingels Equine Reference List |
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1054 |
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Author |
Eisenmann V, G.C. |
Title |
Morphologie fonctionelle et environnement chez les périssodactyles. |
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Journal Article |
Year |
1984 |
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Geobios, Mém sp |
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8 |
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69 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1061 |
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