A molecular and chromosomal study of the moonshine shrew, Crocidura luna Dollman, 1910 from Zambia with a description of a new remarkable karyotype

Abstract

A molecular and chromosomal study of the moonshine shrew, Crocidura luna Dollman, 1910 from Zambia with a description of a new remarkable karyotype AbstractThe genus Crocidura Wagler, 1832 represents the most diverse group of Soricidae. It is widely accepted that the genus is in need of revision, because the taxonomy of several species is still unresolved. In this paper, we present a chromosomal (standard and G-banding) and molecular genetic (16S rDNA, 1112bp; cytochrome b, 501bp) characterization of specimens of Crocidura luna from Zambia. We compare these data with those obtained for the same species from Burundi. The genetic divergence (uncorrected p-distance) between the two samples is 4.1% for cytochrome b and 1.1% for 16S. These values are usually found among close sister species or different populations of the same species in Crocidura. The karyotype found in C. luna (2ns28 and FNs56) is of particular interest, as it represents one of the lowest diploid numbers among the genus Crocidura. Moreover, it presents large chromosomal differences compared to the karyotype of C. luna, previously described in the specimens from Burundi with 2ns36 and NFs56.

肯尼亚哺乳动物名录

“…Chinese: 新月麝鼩. With more than one species, this complex needs taxonomic revision (Castiglia et al, 2009). Recorded from NE DR Congo, Uganda, Kenya, most of Tanzania, Zambia, SE DR Congo, WC Mozambique, Malawi and Mozambique.…”

Chromosomal Differentiation in Genetically Isolated Populations of the Marsh-Specialist Crocidura suaveolens (Mammalia: Soricidae)

“…Initial studies based on nuclear and mitochondrial sequences (mtDNA) suggested a common ancestry of all Crocidura species [15,16], with a clear dichotomy between Afrotropical and Palearctic taxa, which display contrasting patterns of chromosomal differentiation [17]. With the exception of C. luna (2n = 28 or 36 [18]) Afrotropical species are characterized by high diploid numbers (from 2n = 42 to 2n = 68), 2n = 50 being the most common chromosomal form. Palearctic species, on the other hand, present a tendency for low diploid numbers (from 2n = 22 to 2n = 42, [17], with 2n = 40 as the predominant karyotype.…”