Genetic diversity and population structure of<scp>M</scp>ongolian domestic<scp>B</scp>actrian camels (<i>Camelus bactrianus</i>)

Battsetseg, Chuluunbat; Charruau, Pauline; Silbermayr, Katja; Khorloojav, Tumennasan; Burger, Pamela A.

doi:10.1111/age.12158

Cited by 37 publications

(33 citation statements)

References 37 publications

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“…Although these parameters have been studied in domestic Mongolian Bactrian camels (Chuluunbat et al . ), they are not yet well understood in Bactrian camels from wider geographical locations. In the present study, we investigated the 809‐bp mtDNA fragment nucleotides 15120–15928 (accession no. )…”

Section: The Geographic Regions Sample Sizes Numbers Of Haplotypesmentioning

confidence: 97%

Genetic diversity and phylogeographic structure of Bactrian camels shown by mitochondrial sequence variations

Liang

Sá

et al. 2016

Animal Genetics

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SummaryThe Bactrian camel includes various domestic (Camelus bactrianus) and wild (Camelus ferus) breeds that are important for transportation and for their nutritional value. However, there is a lack of extensive information on their genetic diversity and phylogeographic structure. Here, we studied these parameters by examining an 809‐bp mtDNA fragment from 113 individuals, representing 11 domestic breeds, one wild breed and two hybrid individuals. We found 15 different haplotypes, and the phylogenetic analysis suggests that domestic and wild Bactrian camels have two distinct lineages. The analysis of molecular variance placed most of the genetic variance (90.14%, P < 0.01) between wild and domestic camel lineages, suggesting that domestic and wild Bactrian camel do not have the same maternal origin. The analysis of domestic Bactrian camels from different geographical locations found there was no significant genetic divergence in China, Russia and Mongolia. This suggests a strong gene flow due to wide movement of domestic Bactrian camels.

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Section: The Geographic Regions Sample Sizes Numbers Of Haplotypesmentioning

confidence: 97%

Genetic diversity and phylogeographic structure of Bactrian camels shown by mitochondrial sequence variations

Liang

Sá

et al. 2016

Animal Genetics

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“…The camel population resides in close contact with cattle, sheep, goats and occasionally horses, particularly at watering places (wells, branch-water, ditch-water, rivers, and lakes) and during calving and wool shearing periods. Camels, unlike other domestic large animals, often travel up to 16 km daily in search of food [5]. They are less susceptible to some highly contagious livestock diseases, such as foot-and-mouth disease [6].…”

Section: Introductionmentioning

confidence: 99%

Risk factors of brucellosis seropositivity in Bactrian camels of Mongolia

Bayasgalan

Chultemdorj

Roth³

et al. 2018

BMC Vet Res

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BackgroundMore information on brucellosis epidemiology in Bactrian camels is needed due to their growing economic and livelihood importance for herders and renewed efforts in Mongolia to eliminate brucellosis through mass vaccination of ruminants excluding camels. Brucellosis prevalence in camels increased over the past two decades. Random multi-stage cluster surveys were done in the Eastern provinces of Dornod and Sukhbaatar in 2013 and 2014 and in the Southern & Western provinces of Dornogobi, Umnogobi and Khovd in 2014 and 2015. A total of 1822 camels, 1155 cattle, and 3023 small ruminant sera were collected and tested with the Rose Bengal Test. In addition, 195 vaginal swabs and 250 milk samples for bacteriological culture were taken from livestock with history of abortion.ResultsThe overall apparent seroprevalence in camels was 2.3% (95% confidence interval 1.6–3.3). The main risk factor for camel seropositivity was being in an Eastern province when compared to Southern & Western provinces (odds ratio 13.2, 95% CI 5.3–32.4). Camel seroprevalences were stable over the two consecutive survey years, despite introduction of ruminant vaccination: 5.7% (95% CI 3.1–10.2%) and 5.8% (3.3–10.1%) in Eastern provinces and 0.4% (0.2–1.2%) and 0.5% (0.1–2.0%) in Southern & Western provinces. We isolated Brucella abortus from camels and cattle. Camel seropositivity was associated to keeping cattle together with camels. Monitoring of vaccination campaigns showed that coverage in cattle was insufficient because animals could not be adequately restrained.ConclusionsThe present study reveals that brucellosis is present with important seroprevalence in Mongolian camels and was endemic in Eastern provinces. Camel herd seropositivity was most closely associated to infection in cattle.Longer term monitoring is needed to assess whether camel seroprevalance decreases with ongoing vaccination in Mongolia. This should be coupled with further confirmation on Brucella spp. isolates. To date, only Brucella abortus was isolated, but camels are also susceptible to Brucella melitensis. Clear verbal and written information on disease prevention in livestock and household members is important, particularly for remote camel herders who had only moderate knowledge on brucellosis epidemiology and preventive measures.Electronic supplementary materialThe online version of this article (10.1186/s12917-018-1664-0) contains supplementary material, which is available to authorized users.

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“…As a molecular marker, these characteristics of mtDNA sequences have been very important for studies of molecular evolution over past decades (Quan et al, 2000;He et al, 2009;Chuluunbat, et al, 2014). The cytochrome b gene (Cytb) in the mtDNA genome is an important protein-encoding gene for studies of phylogenetic evolution and species classification (Johns and Avise, 1998;Li et al, 2005;Zhong et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogeny of the Bactrian camel based on mitochondrial Cytochrome b gene sequences

Liang¹,

Li²,

Guo³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. The Bactrian camel is an important domesticated animal providing milk, meat, and other products in desert countries. In this study, 111 individuals representing 11 domestic Bactrian camel breeds from China, Mongolia, Russia, and one wild Bactrian camel group from Mongolia were selected for the preparation of mitochondrial DNA. The 1140-bp fragments of the cytochrome b gene (Cytb) were amplified by polymerase chain reaction and sequenced directly. Sequences of the 92 domestic and 19 wild Bactrian camel samples were analyzed with DNASTAR, and a phylogenic tree was constructed using MEGA. The analysis revealed sixteen haplotypes among the samples that were divided into two haplogroups: a domestic haplogroup (H1-H13, H15, and H16) and a wild haplogroup (H14). Haplotype diversity values were from 0.356 in the HosZogdort, to 0.889 in the Sunit Bactrian camel breed. The Sunit breed displayed the highest nucleotide diversity value (0.00115), and the HosZogdort breed had the lowest value (0.00031). All domestic Bactrian camels formed a single monophyletic lineage that is the sister group to wild Bactrian camels, a finding consistent with a single domestication event and independent maternal inheritance since domestication. In addition, the most common mitochondrial haplotypes (H1, H3, and H4) were shared between Chinese, Mongolian, and Russian domestic Bactrian camels, which indicated that there was no distinguishing geographic structure among the domestic breeds from these three regions. These findings provide important insights into patterns of relatedness among Bactrian camels from the Chinese, Mongolian, and Russian regions.

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Genetic diversity and population structure ofMongolian domesticBactrian camels (Camelus bactrianus)

Cited by 37 publications

References 37 publications

Genetic diversity and phylogeographic structure of Bactrian camels shown by mitochondrial sequence variations

Genetic diversity and phylogeographic structure of Bactrian camels shown by mitochondrial sequence variations

Risk factors of brucellosis seropositivity in Bactrian camels of Mongolia

Molecular phylogeny of the Bactrian camel based on mitochondrial Cytochrome b gene sequences

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