Morphological and Molecular Recharacterization of the Rodent Genus Mus from Nepal Based on Museum Specimens

IF 0.8 4区 生物学 Q3 ZOOLOGY Mammal Study Pub Date : 2021-08-26 DOI:10.3106/ms2020-0065
M. Kishimoto, Masaru Kato, Hitoshi Suzuki
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引用次数: 1

Abstract

Abstract. The taxonomy and phylogeny of the subgenus Mus, the Eurasian lineage of the genus Mus, remain unresolved, even for the house mouse (Mus musculus). While the subgenus is diverse in Asia, few studies cover both its morphology and molecular phylogeny. We re-examined 70 specimens identified as M. cervicolor that were collected from central Nepal in 1968 and 1975 and are currently deposited in the Hokkaido University Natural History Museum. To compare morphological features, we examined skull geometric morphometrics and body coloration, and performed a phylogenetic analysis of the mitochondrial cytochrome b gene sequences of representative specimens. The specimens were most likely either M. booduga or M. musculus. The best morphological characteristics for distinguishing the two species were the nasal length ratio, which was high and low, respectively. Mus booduga was found to inhabit altitudes lower than 1000 m and have light ventral fur, while M. musculus inhabited various altitudes up to 3000 m and had variable fur color depending on the altitude. We also discuss the taxonomic status of the fawn-colored mouse M. cervicolor.
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基于博物馆标本的尼泊尔鼠类鼠属的形态和分子重新表征
摘要小家鼠亚属的分类学和系统发育,小家鼠属的欧亚谱系,仍然没有解决,甚至家鼠(小家鼠)。虽然亚属在亚洲是多种多样的,但很少有研究涵盖其形态和分子系统发育。我们重新检查了1968年和1975年在尼泊尔中部采集的70个被鉴定为颈毛鼠的标本,这些标本目前存放在北海道大学自然历史博物馆。为了比较形态学特征,我们检查了头骨几何形态计量学和身体颜色,并对代表性标本的线粒体细胞色素b基因序列进行了系统发育分析。这些标本很可能是布杜加支原体或肌肉支原体。鼻长比高和鼻长比低是区分两种的最佳形态学特征。布杜家鼠主要分布在海拔低于1000 m的地区,腹侧毛较浅;肌鼠主要分布在海拔3000 m以下的地区,毛的颜色随海拔的不同而不同。讨论了黄褐色小鼠的分类学地位。
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来源期刊
Mammal Study
Mammal Study ZOOLOGY-
CiteScore
1.70
自引率
20.00%
发文量
23
审稿时长
>12 weeks
期刊介绍: Mammal Study is the official journal of the Mammal Society of Japan. It publishes original articles, short communications, and reviews on all aspects of mammalogy quarterly, written in English.
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