| affiliative and aggressive behavior in a group of female somali wild ass (equus africanus somalicus). | we observed a group of three young female somali wild asses to develop an ethogram of social behavior in the first phase of a longer term study of social, sexual, and maternal/infant behavior. the most unexpected finding was the frequency and extent of aggressive interactions, which included charge, drive, neck wrestle, head butt, and body slam, behaviors previously reported only for males of other equid species. the overall frequency of aggressive behavior was higher than that of affiliative be ... | 2011 | 21541987 |
| ancient dna from nubian and somali wild ass provides insights into donkey ancestry and domestication. | genetic data from extant donkeys (equus asinus) have revealed two distinct mitochondrial dna haplogroups, suggestive of two separate domestication events in northeast africa about 5000 years ago. without distinct phylogeographic structure in domestic donkey haplogroups and with little information on the genetic makeup of the ancestral african wild ass, however, it has been difficult to identify wild ancestors and geographical origins for the domestic mitochondrial clades. our analysis of ancient ... | 2011 | 20667880 |
| chromosomal rearrangements in a somali wild ass pedigree, equus africanus somaliensis (perissodactyla, equidae). | chromosome analyses were conducted on 15 animals in a pedigree of somali wild ass, equus africanus somaliensis. g- and c-banded karyotypes are presented for the first time on this endangered species. the diploid number ranged from 62 to 64. numerical chromosomal variation was the result of a centric fission which was accompanied by a heterochromatic deletion. the fission polymorphism involved acrocentric elements 19 and 21 as determined by g-banding. these autosomes are homologous to those invol ... | 1998 | 9678344 |
| mass spectral analysis of domestic and wild equine apoa-i and a-ii: detection of unique dimeric forms of apoa-ii. | in pigs, humans, chimpanzees and probably other great apes, a cysteine at residue 6 enables apolipoprotein a-ii to form a homodimer. however, the apoa-iis of other primates, lacking a cysteine residue, are monomeric. we have already reported that horse apoa-iis form homodimers due also to a cysteine at residue 6. in this study, we wanted to determine whether other equine apoa-iis might be monomeric. the high density lipoproteins were ultracentrifugally isolated from the plasmas of a horse (equus ... | 2005 | 16230041 |
| [study on mitochondrial dna d-loop polymorphism in chinese donkeys]. | the mitochondrial dna (mtdna) d-loop sequences with 399 bp in 26 individuals from 5 donkey breeds in china were analyzed. aligned by clustal w software,the results showed that 23 polymorphic nucleotide sites and only transition with the percentage of 5.76% in 399 bp were observed. in reference to mtdna d-loop sequences of european domestic donkey as a control, the average percentage of mtdna d-loop nucleotide variation in 5 chinese donkey breeds was 1.80%. the average percentages of d-loop nucle ... | 2005 | 16018258 |
| genetic diversity of donkey populations from the putative centers of domestication. | donkey domestication drastically changed ancient transport systems in africa and asia, enabling overland circulation of people and goods and influencing the organization of early cities and pastoral societies. genetic studies based on mtdna have pointed to the african wild ass as the most probable ancestor of the domestic donkey, but questions regarding its center of origin remain unanswered. endeavoring to pinpoint the geographical origin of domestic donkey, we assessed levels and patterns of g ... | 2015 | 25516010 |
| ancient dna provides new insight into the maternal lineages and domestication of chinese donkeys. | the donkey (equus asinus) is an important domestic animal that provides a reliable source of protein and method of transportation for many human populations. however, the process of domestication and the dispersal routes of the chinese donkey are still unclear, as donkey remains are sparse in the archaeological record and often confused with horse remains. to explore the maternal origins and dispersal route of chinese donkeys, both mitochondrial dna d-loop and cytochrome b gene fragments of 21 s ... | 2014 | 25433485 |