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Author |
Klingel, H. |
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Title  |
Social organization and reproduction in equids |
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Journal Article |
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Year |
1975 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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Volume |
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Issue |
23 |
Pages |
7-11 |
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Keywords |
Animals; Behavior, Animal; Female; Male; Perissodactyla/*physiology; Reproduction; *Sexual Behavior, Animal; Social Behavior; Territoriality |
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Abstract |
There are two distinct types of social organization and, accordingly, two types of mating systems in equids. In the horse, Plains zebra and Mountain zebra, the adults live in non-territorial and cohesive one-male groups and in stallion groups. The family stallions have exclusive mating rights which are respected by all others. In Grevy's zebra and in the African and Asiatic wild asses, the stallions are permanently territorial and have exclusive mating rights within their territories. Ecological and evolutionary aspects are discussed. |
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English |
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0449-3087 |
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PMID:1060868 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2303 |
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Author |
Bayley, P.; Martin, S.; Anson, M. |
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Title |
Temperature-jump circular dichroism: observation of chiroptical relaxation processes at millisecond time resolution |
Type |
Journal Article |
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Year |
1975 |
Publication |
Biochemical and Biophysical Research Communications |
Abbreviated Journal |
Biochem Biophys Res Commun |
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Volume |
66 |
Issue |
1 |
Pages |
303-308 |
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Keywords |
*Alcohol Oxidoreductases/metabolism; Animals; Circular Dichroism; Horses; Kinetics; Liver/enzymology; Mathematics; Protein Conformation; Temperature; Time Factors |
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English |
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0006-291X |
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Notes |
PMID:1172440 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3816 |
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Author |
Leuthold W, L.B. |
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Title |
Temporal patterns of reproduction in ungulates of Tsavo East National Park Kenya |
Type |
Journal Article |
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Year |
1975 |
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Abbreviated Journal |
E Afr Wildl J |
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Volume |
13 |
Issue |
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Pages |
159-170 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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1345 |
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Author |
Syme, G.J.; Syme, L.A. |
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Title |
The concept of spatial leadership in farm animals: An experiment with sheep |
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Journal Article |
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Year |
1975 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
23 |
Issue |
Part 4 |
Pages |
921-925 |
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Abstract |
The concept of spatial leadership as applied to farm animals is discussed with particular emphasis on methodological problems. Using three experimental procedures forced spatial leadership orders were measured in a group of Romney ewes. Comparisons between orders showed the effects of both the different experimental tasks and the social context on leadership structure. Both these variables were found to affect the orders obtained. The results are interpreted in terms of the utility of the concept of spatial leadership in domestic animals and the necessity for more systematic procedural investigations in this area. |
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no |
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2039 |
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Author |
Short Rv, |
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Title |
The evolution of the horse |
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Journal Article |
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Year |
1975 |
Publication |
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Abbreviated Journal |
J Reprod Fert Suppl |
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Volume |
23 |
Issue |
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1-6 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1589 |
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Author |
Owaga Ml, |
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Title |
The feeding ecology of wildbeest and zebra in Athi – Kaputei plains |
Type |
Journal Article |
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Year |
1975 |
Publication |
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Abbreviated Journal |
E Afr Wildl J |
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Volume |
13 |
Issue |
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Pages |
375-384 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1445 |
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Author |
Ruckebusch Y, |
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Title |
The hypnogram as an index of adaptation of farm animals to changes in their environment |
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Journal Article |
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Year |
1975 |
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Abbreviated Journal |
App Anim Ethol |
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Volume |
2 |
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3-18 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1531 |
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Author |
Wood, F.E.; Cusanovich, M.A. |
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Title |
The reaction of Euglena gracilis cytochrome c-552 with nonphysiological oxidants and reductants |
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Journal Article |
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Year |
1975 |
Publication |
Archives of Biochemistry and Biophysics |
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Volume |
168 |
Issue |
2 |
Pages |
333-342 |
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Abstract |
The reaction of Euglena gracilis cytochrome c-552 (cytochrome f) with the nonphysiological reactants potassium ferrocyanide, potassium ferricyanide, sodium ascorbate, sodium dithionite, and Chromatium vinosum high potential nonheme iron protein was studied by stopped-flow and temperature-jump kinetic methods. The reaction of the purified, water-soluble protein with the reactants was investigated as a function of ionic strength, pH, and temperature. The results demonstrated that reduction and oxidation takes place at a negatively charged site on the cytochrome c-552 surface. Participation of specific amino acid residues in electron transfer is implicated from the pH results. The results obtained for the nonphysiological reactions of cytochrome c-552 are compared with available data for horse heart cytochrome c and Rhodospirillum rubrum cytochrome c2. The results strongly suggest that Euglena gracilis cytochrome c-552 undergoes nonphysiological oxidation and reduction by a mechanism different from that found for cytochrome c or cytochrome c2. |
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Call Number |
refbase @ user @ |
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3987 |
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Author |
Montagu I, |
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Title |
The wild ass of Africa |
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Journal Article |
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Year |
1975 |
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Abbreviated Journal |
Wild Life |
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Volume |
17 |
Issue |
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Pages |
400-401 |
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from Professor Hans Klingels Equine Reference List |
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1409 |
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Author |
Ayeni, J.S.O. |
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Title |
Utilization of waterholes in Tsavo National Park (East) |
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Year |
1975 |
Publication |
African Journal of Ecology |
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13 |
Issue |
3-4 |
Pages |
305-323 |
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Abstract |
Summary Utilization of waterholes by wildlife was studied between April, 1973 and July, 1974 in Tsavo National Park (East), south of the Voi river. Seasonality was an important factor which influenced the various aspects of waterhole utilization. The numbers of the herbivores utilizing the waterholes increased during the dry season but fell during the rains. Some ungulates also moved near to the artificial waterholes in the dry season but moved away from them during the rains when they drank from natural water-holes formed in clay pans filled with rain water. A basic pattern of waterhole utilization dominated by small (adult-size) species during day-time 06.00–18.00 hours and larger species at night 18.00–06.00 hours is described. The separation in times of arrival and deparature peaks of waterhole utilization, and average coincidence of percentages of paired species populations are used to show that big-game attained a measure of time-spaced ecological separation at the waterholes. The water relations of some day-time and night-time drinkers are discussed. From the baseline study the management implications of the development of additional waterholes in the park are discussed. |
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Blackwell Publishing Ltd |
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ISSN |
1365-2028 |
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Equine Behaviour @ team @ |
Serial |
5364 |
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