Southern African mammals 1758 to 1951 : a reclassification /

Ellerman, J. R.; Morrison-Scott, T. C. S.; Hayman, R.W.

doi:10.5962/bhl.title.113025

Cited by 143 publications

(63 citation statements)

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“…3 in Robinson et al, 2004). That said, however, the two hypotheses are equally parsimonious only in the case where the genus Amblysomus is sister to a clade that groups all other golden moles, which although feasible, would conflict with all previously published classifications based on morphology (Roberts, 1951;Ellerman et al, 1953;Meester et al, 1986). Based on these considerations we posit that hypothesis (i) is more likely than hypothesis (ii), and that the large pericentric heterochromatin regions observed in chromosomes homologous to CAS1-5, 10 and X of all Amblysomus spp.…”

Section: Resultsmentioning

confidence: 38%

“…Similarities between the two genera include the lack of talonids on the lower molars (Roberts, 1924(Roberts, , 1951 and the absence of vesicular bullae on the head of the malleus (Broom, 1907). It is, however, not clear whether these characters are plesio-or apomorphic within Chrysochloridae, and a sister relationship between Calcochloris and Eremitalpa has consequently never been proposed, hence their placement in different taxonomic categories (Ellerman et al, 1953;Simonetta, 1968;Petter, 1981) in the most recent classification of golden moles (Bronner and Jenkins, 2005). Given the current lack of evidence in support of a close relationship between these genera, a definitive statement on which of the two phylogenetic interpretations of the CAS7 and 13 fusion accurately reflects the natural situation must await the generation of a well resolved molecular phylogeny for chrysochlorids.…”

Section: Description and Polarization Of The Interchromosomal Rearranmentioning

confidence: 99%

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Chromosomal evolution and distribution of telomeric repeats in golden moles (Chrysochloridae, Mammalia)

Gilbert

Maree

Robinson³

2008

Cytogenet Genome Res

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Golden moles (Chrysochloridae) are small, subterranean mammals endemic to sub-Saharan Africa that together with tenrecs constitute one of six orders in Afrotheria. Here we present a comprehensive karyotypic comparison among six species/subspecies of golden moles based on G-banding and chromosome painting. By expanding the species representation to include a further five species recently published in a companion paper, we were able to map the distribution of telomeric repeats in ten species/subspecies that are representative of six of the nine currently recognized genera. We conclude that: (i) the monophyly of Amblysomus is supported by the amplification of heterochromatin in several pericentric regions and one intrachromosomal rearrangement; (ii) A. hottentotus meesteri groups as sister to a clade that contains A. h. hottentotus, A. h. longiceps, A. h. pondoliae and A. robustus, an association that is underpinned by a shared intrachromosomal rearrangement and the detection of telomeric sequences in the centromeres of all chromosomes of the three A. hottentotus subspecies and A. robustus but, importantly, not in those of A. h. meesteri. These findings indicate an absence of gene flow suggesting that A. h. meesteri should be elevated to specific status. We hypothesize that the lack of gene flow may, in part, reflect hybrid dysgenesis resulting from abnormal meiotic segregation as a consequence of differences in the nature of the centromeric specific satellites; (iii) chromosomes 7 and 13 of Chrysochloris asiatica are fused in both Calcochloris obtusirostris and Eremitalpa granti, but that the position of the centromere in the fused chromosome differs in each species. This suggests that rather than being indicative of common ancestry, the fusion is more likely a convergent character which has arisen independently in each lineage. Furthermore our painting data show two centromeric shifts that are probably autapomorphic for C. obtusirostris. Finally, we conclude that (iv) golden moles are characterized by strong karyotypic conservatism but in marked contrast to the constrained rates of change exhibited by most species, A. robustus is unique in that three autapomorphic fissions define its evolutionary history, and hence the more extensive reshuffling of its genome.

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Section: Resultsmentioning

confidence: 38%

Section: Description and Polarization Of The Interchromosomal Rearranmentioning

confidence: 99%

Chromosomal evolution and distribution of telomeric repeats in golden moles (Chrysochloridae, Mammalia)

Gilbert

Maree

Robinson³

2008

Cytogenet Genome Res

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“…First, given the apparent morphological differentiation (Roberts, 1951;Ellerman et al, 1953;Petter, 1972) among the seven currently recognized southern African subspecies (Meester et al, 1986), and the sometimes marked geographical discontinuities distinguishing many populations, molecular measures of divergence might be expected to reveal regional genetic differences between populations. Secondly, as deep divisions in an infraspecific phylogeny represent a major source of gene pool diversity within a species (Avise, 1992), our investigation has clear conservation implications.…”

Section: Mtdna Differentiation In Smith's Red Rock Rabbit 515mentioning

confidence: 99%

Mitochondrial DNA differentiation among geographical populations of Pronolagus rupestris, Smith's red rock rabbit (Mammalia: Lagomorpha)

Matthee

Robinson

1996

Heredity

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Geographical genetic population structure was determined for an endemic African leporid, Smith's red rock rabbit, Pronolagus rupestris. Restriction fragment length polymorphism analysis of mitochondrial DNA from 55 specimens revealed 32 distinct maternal lineages for the 21 populations sampled. The data show two major genetic assemblages separated by a mean sequence divergence of 7.94 per cent (± 1.40 per cent) and provide little support for the continued recognition of most of the described subspecies. The south-eastern assemblage is confined to the mountain ranges comprising the Great Escarpment of South Africa, while the north-western assemblage is not so tightly constrained. With the possible exception of elevation, no readily apparent ecological or topographical barrier could be identified which delimits the two mitochondrial clades. The sequence divergence separating the south-eastern and north-western P rupestris clades is high, and approximates the interspecific sequence divergences detected between P rupestris and other Pronolagus species. The two P rupestris clades are parapatric for part of their distribution, and the absence of shared mtDNA lineages is consistent with the hypothesis that the two populations are reproductively isolated from each other. We provisionally interpret this to reflect the presence of two hitherto undetected biological species in what has conventionally been recognized as a single taxon, P rupestris.

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“…Interfemoral membrane is red-brown, speckled with black irregular spots, and sparsely haired near body (Kingdon 1974). Wing membranes are dichromatic with an orange-red to red to red-brown background that is speckled with irregular blackbrown to black spots (Ansell 1960;Ellerman et al 1953;Gray 1866;Kock 1967;Stuart and Stuart 1988). Variability in color may be due to alcohol preservation or age (Kock 1967).…”

Section: Diagnosis Myotis Welwitschiimentioning

confidence: 99%

Myotis welwitschii

2002

Mammalian Species

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Southern African mammals 1758 to 1951 : a reclassification /

Cited by 143 publications

References 0 publications

Chromosomal evolution and distribution of telomeric repeats in golden moles (Chrysochloridae, Mammalia)

Chromosomal evolution and distribution of telomeric repeats in golden moles (Chrysochloridae, Mammalia)

Mitochondrial DNA differentiation among geographical populations of Pronolagus rupestris, Smith's red rock rabbit (Mammalia: Lagomorpha)

Myotis welwitschii

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