First record of Mus cookii (Cook's mouse) from Pothwar, Pakistan: a probable case of range extension?

摘要

The Southeast Asian species Mus (Mus) cookii Ryley 1914 has been previously reported from southern China, Nepal, northeastern and peninsular India, Myanmar, north and central Thailand and Vietnam. A cytochrome b (Cytb) gene analysis revealed the presence of M. cookii which significantly expands the known western range of this species. however, it is unclear whether the M. cookii population in the Pothwar region represents a historical or recent westward range expansion or, on the contrary, a relictual source population that further experienced an historic eastward range expansion into Southeast Asia.