| Records |
| Author |
Oakenfull, E.A.; Lim, H.; Ryder, O. |
| Title |
A survey of equid mitochondrial DNA: Implications for the evolution, genetic diversity and conservation of Equus |
Type |
Journal Article |
| Year |
2000 |
Publication |
Conservation Genetics |
Abbreviated Journal |
Conservat Genet |
| Volume |
1 |
Issue |
4 |
Pages |
341-355 |
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| Abstract |
The evolution, taxonomy and conservation of the genus Equuswere investigated by examining the mitochondrial DNA sequences of thecontrol region and 12S rRNA gene. The phylogenetic analysis of thesesequences provides further evidence that the deepest node in thephylogeny of the extant species is a divergence between twolineages; one leading to the ancestor of modern horses (E.ferus, domestic and przewalskii) and the other to thezebra and ass ancestor, with the later speciation events of the zebrasand asses occurring either as one or more rapid radiations, or withextensive secondary contact after speciation. Examination of the geneticdiversity within species suggested that two of the E. hemionussubspecies (E. h. onager and E. h. kulan) onlyrecently diverged, and perhaps, are insufficiently different to beclassified as separate subspecies. The genetic divergence betweendomestic and wild forms of E. ferus (horse) and E.africanus (African ass) was no greater than expected within anequid species. In E. burchelli (plains zebra) there was anindication of mtDNA divergence between populations increasing withdistance. The implications of these results for equid conservation arediscussed and recommendations are made for conservation action. |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5039 |
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| Author |
Byrne, R.W. |
| Title |
How monkeys find their way: leadership, coordination, and cognitive maps of African baboons. |
Type |
Book Chapter |
| Year |
2000 |
Publication |
On the Move: How and Why Animals Travel in Groups |
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Issue |
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Pages |
491–518 |
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Chicago University Press |
Place of Publication |
Chicago |
Editor |
Boinski, S.; Garber, P.A. |
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no |
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Equine Behaviour @ team @ |
Serial |
5146 |
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| Author |
Holekamp, K.E, Boydston, E.E; Smale, L. |
| Title |
Group Travel in Social Carnivores |
Type |
Book Whole |
| Year |
2000 |
Publication |
On the Move: How and Why Animals Travel in Groups |
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Issue |
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Pages |
587-627 |
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Chicago University Press |
Place of Publication |
Chicago |
Editor |
Boinski, S.; Garber, P.A. |
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no |
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Equine Behaviour @ team @ |
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5147 |
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| Author |
Johnstone, R.A.; Dugatkin, L.A. |
| Title |
Coalition formation in animals and the nature of winner and loser effects |
Type |
Journal Article |
| Year |
2000 |
Publication |
Proceedings of the Royal Society B: Biological Sciences |
Abbreviated Journal |
Proc. Roy. Soc. Lond. B Biol. Sci. |
| Volume |
267 |
Issue |
1438 |
Pages |
17-21 |
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| Abstract |
Coalition formation has been documented in a diverse array of taxa, yet there has been little formal analysis of polyadic interactions such as coalitions. Here, we develop an optimality model which examines the role of winner and loser effects in shaping coalition formation. We demonstrate that the predicted patterns of alliances are strongly dependent on the way in which winner and loser effects change with contestant strength. When winner and loser effects decrease with the resource-holding power (RHP) of the combatants, coalitions will be favoured between the strongest members of a group, but not between the weakest. If, in contrast, winner and loser effects increase with RHP, exactly the opposite predictions emerge. All other things being equal, intervention is more likely to prove worthwhile when the beneficiary of the aid is weaker (and its opponent is stronger), because the beneficiary is then less likely to win without help. Consequently, intervention is more probable when the impact of victory on the subsequent performance of a combatant increases with that individual's strength because this selects for intervention in favour of weaker combatants. The published literature on hierarchy formation does not reveal how winner and loser effects actually change with contestant strength and we therefore hope that our model will spur others to collect such data; in this light we suggest an experiment which will help to elucidate the nature of winner and loser effects and their impact on coalition formation in animals. |
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* aggression * dominance * hierarchy * intervention * reciprocity |
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| Notes |
10.1098/rspb.2000.0960 |
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no |
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Equine Behaviour @ team @ |
Serial |
5290 |
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| Author |
Allman, J.M. |
| Title |
Evolving brains. |
Type |
Book Whole |
| Year |
2000 |
Publication |
Evolving brains |
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How did the human brain with all its manifold capacities evolve from basic functions in simple organisms that lived nearly a billion years ago? John Allman addresses this question in Evolving Brains, a provocative study of brain evolution that introduces readers to some of the most exciting developments in science in recent years. |
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Scientific American Library |
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New York |
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978-0716760382 |
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no |
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Equine Behaviour @ team @ |
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5460 |
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| Author |
Garber, P.; Boinski, S. |
| Title |
Group Movement in Social Primates and Other Animals: Patterns, Processes, and Cognitive Implications. |
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2000 |
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University of Chicago Press |
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Chicago |
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no |
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Equine Behaviour @ team @ |
Serial |
5466 |
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| Author |
Silanikove, N. |
| Title |
The physiological basis of adaptation in goats to harsh environments |
Type |
Journal Article |
| Year |
2000 |
Publication |
Small Rum Res |
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| Volume |
35 |
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no |
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Equine Behaviour @ team @ Silanikove2000 |
Serial |
6255 |
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| Author |
Aldezabal, A.; Garin, I. |
| Title |
Browsing preference of feral goats (Capra hircus L.) in a Mediterranean mountain scrubland |
Type |
Journal Article |
| Year |
2000 |
Publication |
J Arid Env |
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44 |
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no |
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Equine Behaviour @ team @ Aldezabal2000 |
Serial |
6256 |
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| Author |
McComb, K.; Moss, C.; Sayialel, S.; Baker, L. |
| Title |
Unusually extensive networks of vocal recognition in African elephants |
Type |
Journal Article |
| Year |
2000 |
Publication |
Anim Behav |
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| Volume |
59 |
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no |
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Equine Behaviour @ team @ McComb2000 |
Serial |
6281 |
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| Author |
Yang, S. |
| Title |
Melioidosis research in China |
Type |
Journal Article |
| Year |
2000 |
Publication |
Acta Tropica |
Abbreviated Journal |
Acta Trop |
| Volume |
77 |
Issue |
2 |
Pages |
157-165 |
| Keywords |
Animals; Anti-Bacterial Agents/pharmacology; Burkholderia pseudomallei/drug effects/immunology/*pathogenicity; China/epidemiology; Cross Reactions; Glanders/immunology/microbiology; Horses; Humans; *Melioidosis/epidemiology/immunology/microbiology/veterinary; Seroepidemiologic Studies; Virulence |
| Abstract |
Research on melioidosis and its pathogen has been ongoing in China for more than two decades. It has been demonstrated that the natural foci are located predominantly in Hainan, Guangdong and Guangxi province, where there is a good correlation between soil isolation and the serum prevalence of antibodies to Burkholderia pseudomallei. The cases of melioidosis reported up to now are concentrated in the Hainan and Zhanjiang peninsula. Investigations on serotype, virulence, ecology, antibiotic susceptibility, whole cell analysis by gas chromatography, and genetics have led to a new understanding of the pathology of the disease. Immunological cross reactions between Burkholderia mallei and B. pseudomallei and the difference between melioidosis and glanders in horses is discussed. |
| Address |
Medical Research Institute, Yan-Ling (510507), Dongguanzhuang Road 91, Guangzhou, People's Republic of China. songyangch@hotmail.com |
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English |
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0001-706X |
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| Notes |
PMID:11080506 |
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no |
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Equine Behaviour @ team @ |
Serial |
2649 |
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