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Author |
Castley, J.G.; Knight, M.H. |
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Population status of plains zebra, Equus burchelli, in South African National Parks. |
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1997 |
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Scientific Services, National Parks Board |
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Kimberley, South Africa. |
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Equine Behaviour @ team @ |
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2254 |
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Author |
Chu, G.Z., et al |
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Title |
The summer habitat and population numbers of the Mongolian wild ass in the Kalamaili Mountains Wildlife Reserve, Xinjiang Uygur Autonomous Region |
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Year |
1985 |
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Acta Zoologica Sinica |
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Acta Zoologica Sinica |
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31 |
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2 |
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178-186 |
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Chineese |
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Equine Behaviour @ team @ |
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2258 |
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Author |
Dvoinos, G.M.; Kharchenko, V.A.; Zviagnitsova, N.S. |
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Title |
The characteristics of the helminth community in the Turkmen kulan (Equus hemionus) |
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Journal Article |
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Year |
1992 |
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Parazitologiia |
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Parazitologiia |
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26 |
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3 |
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246-251 |
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Animals; Female; Helminthiasis/parasitology; Helminthiasis, Animal; Helminths/classification/*isolation & purification; Male; Perissodactyla/*parasitology; Turkmenistan; Ukraine |
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Abstract |
The helminth fauna of 24 kulans from Askaniya-Nova and Badkhyz was studied. 42 species of helminths were found, 34 of which belong to strongylids. The helminth species composition of kulan is similar to that of other species of horses. This is a result of an intensive parasite exchange in the historical past when numerous populations of different Equidae species made long seasonal migrations over steppe inter-river lands of Asia and grazed for some time on common pastures. |
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Russian |
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K kharakteristike soobshchestva gel'mintov turkmenskogo kulana (Equus hemionus) |
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0031-1847 |
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PMID:1408368 |
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Equine Behaviour @ team @ |
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2285 |
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Henneke, D.R.; Potter, G.D.; Kreider, J.L.; Yeates, B.F. |
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Relationship between condition score, physical measurements and body fat percentage in mares |
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1983 |
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Equine Veterinary Journal |
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Equine Vet J |
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15 |
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4 |
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371-372 |
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*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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Equine Behaviour @ team @ |
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2299 |
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Joubert, E.; Louw, G.N. |
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Preliminary observations on the digestive and renal efficiency of Hartmann's zebra Equus zebra hartmannae. |
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1976 |
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Madoqua |
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Madoqua |
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10 |
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119-121 |
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Equine Behaviour @ team @ |
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2306 |
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Author |
Eisenberg, J.F.; Kleiman, D.G. |
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Title |
Olfactory Communication in Mammals |
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Year |
1972 |
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Annual Review of Ecology and Systematics |
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Annu Rev Ecol Systemat |
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3 |
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1 |
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1-32 |
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Equine Behaviour @ team @ Eisenberg1972 |
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2316 |
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Author |
Kruger, K.; Gaillard, C.; Stranzinger, G.; Rieder, S. |
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Title |
Phylogenetic analysis and species allocation of individual equids using microsatellite data |
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Journal Article |
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2005 |
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Journal of Animal Breeding and Genetics |
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122 |
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s1 |
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78-86 |
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Summary The taxonomic status of all equid species is not completely unravelled. This is of practical relevance for conservation initiatives of endangered, fragmented equid populations, such as the Asiatic wild asses (in particular Equus hemionus onager and E. hemionus kulan). In this study, a marker panel consisting of 31 microsatellite loci was used to assess species demarcation and phylogeny, as well as allocation of individuals (n = 120) to specific populations of origin (n = 11). Phylogenetic analysis revealed coalescence times comparable with those previously published from fossil records and mtDNA data. Using Bayesian approaches, it was possible to distinguish between the studied equids, although individual assignment levels varied. The observed results support the maintenance of separate captive conservation herds for E. hemionus onager and E. hemionus kulan. The first molecular genetic results for E. hemionus luteus remained contradictory, as they unexpectedly indicated a closer genetic relationship between E. hemionus luteus and E. kiang holderi compared with the other hemiones. |
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Equine Behaviour @ team @ |
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2334 |
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Author |
Maloiy, G.M.; Boarer, C.D. |
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Response of the Somali donkey to dehydration: hematological changes |
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Journal Article |
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Year |
1971 |
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Am J Physio |
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Am J Physiol |
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221 |
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1 |
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37-41 |
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Equine Behaviour @ team @ |
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2344 |
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Author |
Sigurjónsdóttir , H.; van Dierendonck, M.C.; Snorrason, S.; Thórhallsdóttir, A.G. |
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Title |
Social relationships in a group of horses without a mature stallion |
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2003 |
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Behaviour |
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Behaviour |
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140 |
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6 |
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783-804 |
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1. The social relationships in a group of Icelandic horses without a mature stallion were studied. The horses were all familiar to each other. Mutual grooming and play relationships, spatial associations, dominance-subordinate relations and the effect of kinship on these relationships were analysed.TAGSTARTBRTAGEND 2. The social structure was clearly dominated by the behaviour of the adult mares. The horses preferred to form bonds within their social class (sex/age) and they kept close proximity with their friends. The group was effectively divided into two social subgroups, adult mares as one group and adult geldings and sub-adults as another group. The sub-adults and adult geldings formed associations, which were based on mutual grooming and play, while the adult mares did not play. Differences between the sexes were evident. Males played more than the females, had more playing partners and were more popular as playmates.TAGSTARTBRTAGEND 3. Aggression rates were low. The dominance hierarchy was linear. Adult mares ranked higher than adult geldings, sub-adults and the foals. Rank was significantly correlated with age. The closer the adult mares were in rank, the more they groomed with each other. Such relationships were not found amongst the other social group.TAGSTARTBRTAGEND 4. Kinship was calculated between all pairs of animals for up to 4 or 5 generations. Allogrooming and play frequencies and proximity were all positively correlated with kinship. Adult mares, which were close in the dominance hierarchy, were on average more related than those further apart.TAGSTARTBRTAGEND 5. The social relationships in the Icelandic herd were, to some extent, different from relationships reported from unmanaged and feral horse-herds with mature stallions and bachelors. Our results suggest that adult mares groom more in groups without a stallion. Furthermore, they have more preferred partners than in natural harems and their partners are other adult mares, not their weaned offspring as seems to be the case in feral herds. The sub-adults also seem to be more socially active in the absence of stallions. Interestingly, in the Icelandic group, the adult mares showed stallion like behaviours, like mounting and protecting foals. Only by studying the behaviour and the nature of the relationships of horses in groups of different compositions, can we expect to gain a comprehensive understanding about individual social strategies and cognitive capabilities of the species. Such knowledge is valuable for management and welfare of the horse. |
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Equine Behaviour @ team @ |
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2363 |
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Author |
Mills, M.G.L.; Shenk, M.G.L. |
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Title |
Predator--Prey Relationships: The Impact of Lion Predation on Wildebeest and Zebra Populations |
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Journal Article |
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Year |
1992 |
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The Journal of Animal Ecology |
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T. J. Anim. Ecol. |
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61 |
Issue |
3 |
Pages |
693-702 |
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1. The role of lion Panthera leo predation in the dynamics of blue wildebeest Connochaetes taurinus and zebra Equus burchelli populations was investigated through simulation models. The data used in the models were from intensive observations over 4 years in the south-east of the Kruger National Park. 2. Population estimates of wildebeest and zebra were made from aerial surveys, sex and age ratios from ground counts. Lion numbers were determined from observations of marked and radio-collared animals. Predation was studied by following lions for continuous periods of up to 336 h. 3. Two models were constructed. Model 1 ascertained the number of killing lions (adult females) that could be supported by each prey population while remaining stable. A single model was constructed for the sedentary wildebeest population. A summer and winter model was constructed for the semi-migratory zebra population. The sensitivity of the parameters in the model was tested by changing their value by 10%. In model 2, the kill age structure for each species was changed to determine the number of killing lions the altered prey selection parameters could support. 4. There was no difference in the vulnerability of either species to predation. Zebra foals (<1 year) were killed more frequently than expected. No selection for sex or by season could be found for either species. 5. Model 1 predicted that the wildebeest population stabilizes with 7.7 killing lions, close to the number in the study area. The winter zebra population stabilizes with 6.8 killing lions and the summer zebra population with 19.4. Manipulation of kill rate followed by adult fecundity rate had the greatest effect on population size of both species. In model 2, wildebeest predation was made selective towards calves and zebra predation was made non-selective for sex and age. With these parameters the wildebeest population stabilizes with 10.7 killing lions and the zebra population with 5.4 in winter and 15.1 in summer. 6. The models suggest that lion predation affected wildebeest more severely than zebra during the study. This was through the way in which lions selected their prey, and because of the sedentary behaviour of the wildebeest, as opposed to the semi-migratory behaviour of the zebra. |
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Equine Behaviour @ team @ |
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2376 |
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