宁夏兽类两新纪录——川西缺齿鼩和小纹背鼩鼱

doi:10.16829/j.slxb.150709

摘要/Abstract

Abstract:

In September 2011, six shrew specimens were collected with traps from Mt. Liupanshan, Ningxia Hui Autonomous Region (35°36′76″N, 106°32′79″E, 2 000 m asl). Pelage, skull, and teeth morphologies of one specimen are similar to Chodsigoa hypsibia and the others are similar to Sorex bedfordiae. Molecular analyses supported the two species C. hypsibia and S. bedfordiae to be monophyletic, and the K2P genetic distance of Cyt b gene is 0.4% (C. hypsibia) and 6.7% - 7.4% (S.bedfordiae). Thus, these specimens were identified as C. hypsibia and S. bedfordiae based on morphological and phylogenetic analyses. They represent the first records of C. hypsibia and S. bedfordiae in Ningxia, and expand the known distribution range of the two species.

Key words: Chodsigoa hypsibia, Sorex bedfordiae, Ningxia, New records

中图分类号:

Q958.2

周利, 廖锐, 侯全芬, 陈顺德, 刘少英. 宁夏兽类两新纪录——川西缺齿鼩和小纹背鼩鼱[J]. 兽类学报, 2023, 43(2): 224-228.

Li ZHOU, Rui LIAO, Quanfen HOU, Shunde CHEN, Shaoying LIU. Two new records of Chodsigoa hypsibia and Sorex bedfordiae from Ningxia in China[J]. ACTA THERIOLOGICA SINICA, 2023, 43(2): 224-228.

图/表 4

表1 宁夏小纹背鼩鼱和川西缺齿鼩标本外形、头骨量度 (体重单位：g；长度单位：mm)

Table 1 External and cranial measurements of Sorex bedfordiae and Chodsigoa hypsibia from Ningxia (Body weight: g; measurements: mm)

测量指标 Measurements	小纹背鼩鼱 Sorex bedfordiae					川西缺齿鼩 Chodsigoa hypsibia
测量指标 Measurements	SAF11133	SAF11136	SAF11159	SAF11146	SAF11183	SAF11148
体重W	6.0	8.0	6.0	7.0	6.0	10.0
头体长HB	55.0	54.0	58.0	58.0	58.0	71.0
尾长TL	45.0	50.0	52.0	56.0	52.0	60.0
后足长HF	12.0	12.0	12.0	13.0	12.0	13.0
颅全长CIL	17.71	17.90	17.12	―	―	―
脑颅宽CB	8.14	8.12	8.13	―	―	―
颅高CH	5.62	5.36	5.30	―	5.52	―
眶间宽IOB	3.43	3.26	3.37	―	―	―
吻长RL	7.44	7.31	7.46	―	―	―
吻后长PRL	9.53	10.12	9.47	―	―	―
颚枕长PPL	7.60	7.42	6.70	―	―	―
上齿列长UTL	7.58	7.46	7.67	―	―	―
第二上臼齿宽M²-M²	4.31	4.20	4.19	―	―	―
下颌长ML	10.08	10.14	10.27	10.39	―	11.70
下列齿长LTR	6.82	6.99	6.84	6.88	―	7.90
颚骨至门牙PIL	7.68	7.70	7.80	―	―	―

图1 宁夏六盘山川西缺齿鼩 (编号：SAF11148) 的背面、腹面及侧面观

Fig. 1 Dorsal, ventral and lateral view of specimen of C. hypsibia (NO.SAF11148) from Liupanshan, Ningxia Hui Autonomous Region

图2 宁夏六盘山小纹背鼩鼱 (编号：SAF11133) 的背面、腹面、侧面及头骨腹面、背面、侧面和下颌骨

Fig. 2 Dorsal, ventral, lateral view of the pelage, cranium and the mandible of specimen of S. bedfordiae from Liupanshan, Ningxia Hui Autonomous Region (NO. SAF11133)

图3 基于线粒体Cyt b基因构建的贝叶斯树. 节点上的数值为贝叶斯后验概率，节点下为自展值

Fig. 3 The Bayesian phylogenetic tree based on mitochondrial Cyt b gene. The numbers above the branches are the Bayesian posterior probability (PP) and the numbers below the branches refer to bootstrap values (BS)

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