Confirmation of the chromosomal constitution of Fea's muntjac, Muntiacus feae.

Soma, Hiroaki; Kada, Hidemi; Meckvichai, C.; Mahannop, Alongkorn

doi:10.2183/pjab.63.253

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Huang et al (2006) discovered the fusion relationship of chromosomal tandem repeats in the karyotype evolution using the tissues of the Fea’s muntjac and Gongshan muntjac from the Kunming Cell Bank of the Kunming Institute of Zoology, Chinese Academy of Sciences [ 10 ]. The results on the karyotype phenotype were consistent with the results of Soma et al (1987), namely that female Fea’s muntjacs have 2n = 13 chromosomes and males have 2n = 14 chromosomes [ 8 , 29 ]. Based on related articles and animal monographs, there are no existing photos of Fea’s muntjac, and there seem to have been very few reports on this species in the past 40 years.…”

Section: Introductionsupporting

confidence: 90%

Morphological, Phaneroptic, Habitat and Population Description of Three Muntjac Species in a Tibetan Nature Reserve

Wang

et al. 2022

Animals

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Researchers have proposed a variety of classification schemes for the species in the genus Muntiacus (Artiodactyla: Cervidae) based on morphological, molecular, and other evidence, but disputes remain. The Tibetan Yarlung Zangbo Grand Canyon National Nature Reserve in the Eastern Himalayas is an area with a rich diversity of muntjac species. The habitats of many species overlap in this area, but systematic research in this area is lacking. To clarify the species, population and habitat size of muntjac species in the study area, we used camera-traps to monitor muntjacs in the nature reserve from 2013 to 2021 and described and compared morphological characteristics of the muntjac species. Subsequently, we used the MaxEnt model to simulate the habitats of the muntjac species and the Random Encounter Model to estimate the population density and numbers of muntjacs. Three muntjac species were found in the area, namely Muntiacus vaginalis (n = 7788 ± 3866), Muntiacus gongshanensis (n = 6673 ± 2121), and Muntiacus feae (n = 3142 ± 942). The red muntjac has the largest habitat area, the highest population density, and largest size, followed by Gongshan muntjac and Fea’s muntjac. This study provides basic data for improving the background knowledge of the animal diversity in the Eastern Himalayan biodiversity hotspot, as well as detailed information and references required by wildlife workers for species identification.

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Section: Introductionsupporting

confidence: 90%

Morphological, Phaneroptic, Habitat and Population Description of Three Muntjac Species in a Tibetan Nature Reserve

Wang

et al. 2022

Animals

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“…These two species, however, can produce viable F 1 hybrids (2n ϭ 27) in captivity, and partial spermatogenesis was observed in hybrids (Shi, Ye, and Duan 1980;Shi and Pathak 1981;Neiztel 1987). Other karyotyped species have intermediate numbers of chromosomes; for example, 2n ϭ 8 F, 9 M in Muntiacus crinifrons (Shi 1983), 2n ϭ 8 F, 9 M in Muntiacus gongshanensis (Shi and Ma 1988), and 2n ϭ 13 F (Soma et al 1983(Soma et al , 1987, 14 M (L. M. Shi, personal communication) in Muntiacus feae. The tufted deer (Elaphodus cephalophus), which is the sole species in the other genus of the Muntiacinae subfamily, has polymorphic karyotypes with three different diploid numbers, 46, 47, and 48, observed in natural populations (Shi 1981;Shi, Yang, and Kumamoto 1991).…”

Section: Introductionmentioning

confidence: 99%

Rapid and Parallel Chromosomal Number Reductions in Muntjac Deer Inferred from Mitochondrial DNA Phylogeny

Wang¹,

Li²

2000

Molecular Biology and Evolution

104

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Muntjac deer (Muntiacinae, Cervidae) are of great interest in evolutionary studies because of their dramatic chromosome variations and recent discoveries of several new species. In this paper, we analyze the evolution of karyotypes of muntjac deer in the context of a phylogeny which is based on 1,844-bp mitochondrial DNA sequences of seven generally recognized species in the muntjac subfamily. The phylogenetic results support the hypothesis that karyotypic evolution in muntjac deer has proceeded via reduction in diploid number. However, the reduction in number is not always linear, i.e., not strictly following the order: 46→14/13→8/9→6/7. For example, Muntiacus muntjak (2n ϭ 6/7) shares a common ancestor with Muntiacus feae (2n ϭ 13/14), which indicates that its karyotype was derived in parallel with M. feae's from an ancestral karyotype of 2n Ն 13/14. The newly discovered giant muntjac (Muntiacus vuquangensis) may represent another parallel reduction lineage from the ancestral 2n ϭ 46 karyotype. Our phylogenetic results indicate that the giant muntjac is relatively closer to Muntiacus reevesi than to other muntjacs and may be placed in the genus Muntiacus. Analyses of sequence divergence reveal that the rate of change in chromosome number in muntjac deer is one of the fastest in vertebrates. Within the muntjac subfamily, the fastest evolutionary rate is found in the Fea's lineage, in which two species with different karyotypes diverged in around 0.5 Myr.

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“…The extreme diversification in chromosomal number and structure make them an ideal model for studying karyotypic evolution. Among the five extant muntjacs that have karyotype reports, the Indian muntjac (M. muntjak vaginalis) has the lowest chromosome number known in mammals, 2n = 6 (♀) and 2n = 7 (♂) (Wurster & Benirschke, 1970); the Chinese muntjac (M. reevesi), a close relative of the Indian muntjac, has a karyotype of 2n = 46, all chromosomes are acrocentric (Wurster & Benirschke, 1967); the other species have intermediate karyotypes: 2n = 8 (♀) and 2n = 9 (♂) in black muntjac (M. crinifrons) (Shi, 1983) and Gongshan muntjac (M. gongshanensis) (Shi & Ma, 1988); 2n = 12,13,14 (♀) and 2n = 14 (♂) in Fea's muntjac (M. feae) (Soma et al, 1983(Soma et al, , 1987Tanomtong et al, 2005).…”

mentioning

confidence: 99%

Cloning, Characterization, and FISH Mapping of Four Satellite DNAs from Black Muntjac (<I>Muntiacus crinifrons</I>)and Fea's Muntjac (<I>M. feae</I>)

Liu¹

2008

Zoological Research

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Abstract:Recent molecular cytogenetic studies demonstrate that extensive centromere-telomere fusions are the main chromosomal rearrangements underlying the karyotypic evolution of extant muntjacs. Although the molecular mechanism of tandem fusions remains unknown, satellite DNA is believed to have facilitated chromosome fusions by non-allelic homologous recombination. Previous studies detected non-random hybridization signals of cloned satellite DNA at the postulated fusion sites on the chromosomes in Indian and Chinese muntjacs. But the genomic distribution and organization of satellite DNAs in other muntjacs have not been investigated. In this study, we have isolated four satellite DNA clones (BMC5, BM700, BM1.1k and FM700) from the black muntjac (Muntiacus crinifrons) and Fea's muntjac (M. feae), and hybridized these four clones onto chromosomes of four muntjac species (M. reevesi, M. crinifrons, M. gongshanenisis and M. feae). Besides the predominant centromeric signals, non-random interstitial hybridization signals from satellite I and II DNA clones (BMC5, BM700 and FM700) were also observed on the arms of chromosomes of these four muntjacs. Our results provide additional support for the notion that the karyotypes of M. crinifrons, M. feae and M. gongshanensis have evolved from a 2n = 70 ancestral karyotype by a series of chromosome fusions.

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Confirmation of the chromosomal constitution of Fea's muntjac, Muntiacus feae.

Cited by 6 publications

References 7 publications

Morphological, Phaneroptic, Habitat and Population Description of Three Muntjac Species in a Tibetan Nature Reserve

Morphological, Phaneroptic, Habitat and Population Description of Three Muntjac Species in a Tibetan Nature Reserve

Rapid and Parallel Chromosomal Number Reductions in Muntjac Deer Inferred from Mitochondrial DNA Phylogeny

Cloning, Characterization, and FISH Mapping of Four Satellite DNAs from Black Muntjac (<I>Muntiacus crinifrons</I>)and Fea's Muntjac (<I>M. feae</I>)

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