Chromosomal characterization of &lt;i&gt;Arvicanthis&lt;/i&gt; species (Rodentia, Murinae) from western and central Africa: implications for taxonomy

Volobouev, V.; Ducroz, Jean-François; Анискин, В. М.; Britton‐Davidian, Janice; Castiglia, Riccardo; Dobigny, Gauthier; Granjon, Laurent; Lombard, M.; Corti, Marco; Sicard, Bruno; Capanna, Ernesto

doi:10.1159/000063041

Cited by 41 publications

(78 citation statements)

References 14 publications

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“…Two karyotyped specimens, 1 male and 1 female, yielded a diploid number of 2n562 and a NFa574 ( Figure 5). By diploid number and chromosome sub-metacentric morphology they corresponded unambiguously to A. ansorgei sensu Volobouev et al (2002a). These three individuals were both caught near water, on a small island in Koumbani and close to flooded rice fields in Mankountan and in Kaback.…”

Section: Species Assignation and Taxonomic Assessmentmentioning

confidence: 90%

“…In Senegal, A. ansorgei inhabits the region south of Gambia River and the holotype comes from Gunnal in Guinea Bissau (Thomas 1910). The species was known in grasslands and bush from Gambia (Fadda & Corti 2001), S. Senegal (Casamance, Kedougou, Pondala in Granjon et al 1992;Volobouev et al 2002a), S.W. Mali (Katibougou, Samaya, Farabana, Djaliba in Volobouev et al 2002a), Burkina Faso and Niger (Dobigny et al 2002b), S. Chad (Fadda & Corti 2001) and Benin (Capanna et al 1997).…”

Section: Species Assignation and Taxonomic Assessmentmentioning

confidence: 99%

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New data on the taxonomy and distribution of Rodentia (Mammalia) from the western and coastal regions of Guinea West Africa

Denys¹,

Lalis²,

Анискин

et al. 2009

Italian Journal of Zoology

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We compiled the first taxonomic inventory of rodents inhabiting the region from northwestern Guinea to coastal Guinea and this enabled an improved understanding of the rodent fauna of this unexplored region at the western margin of the guineo-congolese forest block. Through standard cytogenetic and morphological analyses we described the presence of two sibling species of the genus Mastomys in West Africa. We report here the first records for Guinea of Arvicanthis ansorgei and M. mattheyi. Our data indicated an extension of the known distribution of Lemniscomys striatus to include the western region of the range of Lophuromys cf. sikapusi. A comparison between southern Senegal, southern Mali, Ivory Coast and eastern Guinea assemblages shows some differences in the rodents between eastern and western Guinea as well as with the surrounding countries. It appears that coastal Guinea could correspond to a transition zone between forest and savanna but this region appears to be ecologically highly degraded in terms of its small mammal communities. Rattus rattus is found in all sampled localities but Mus musculus is restricted to one locality where it was the dominant species of the assemblage. Our study highlights the importance of surveys of rodent biodiversity in unexplored zones.

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Section: Species Assignation and Taxonomic Assessmentmentioning

confidence: 90%

Section: Species Assignation and Taxonomic Assessmentmentioning

confidence: 99%

New data on the taxonomy and distribution of Rodentia (Mammalia) from the western and coastal regions of Guinea West Africa

Denys¹,

Lalis²,

Анискин

et al. 2009

Italian Journal of Zoology

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“…For details on geographic origin, sex and number of animals of the genus Arvicanthis studied, as well as the types of chromosomal analyses applied, see Volobouev et al (2002). For similar data on the genus Acomys see Volobouev et al (1991), Volobouev et al (1996a, b) and Kunze et al (1999).…”

Section: Methodsmentioning

confidence: 99%

“…In contrast, however, enzymatic, chromosomal and molecular data argue for the presence of four sibling species provisionally labeled as ANI-1, ANI-2, ANI-3 and ANI-4 (see Ducroz, 1998;Volobouev et al, 2002).…”

Section: Arvicanthis Phylogenymentioning

confidence: 99%

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Patterns of karyotype evolution in complexes of sibling species within three genera of African murid rodents inferred from the comparison of cytogenetic and molecular data

Volobouev

Анискин

Lecompte³

et al. 2002

Cytogenet Genome Res

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Here we report on the analysis of three rodent sibling species complexes belonging to the African genera Arvicanthis, Acomys and Mastomys. Using cytogenetic and molecular approaches we set out to investigate how karyotype and molecular evolution are linked in these muroid sibling species and, in particular, to what extent chromosomal changes are relevant to cladogenic events inferred from molecular data. The study revealed that each complex is characterized by a distinct pattern of karyotype evolution (karyotypic orthoselection), and a specific mutation rate. However we found that the general pattern may be considerably modified in the course of evolution within the same species complex (Arvicanthis, Acomys). This observation suggests that karyotypic orthoselection documented in numerous groups is not so much a reflection of selection of a definite type of chromosomal mutation, as suggested by the classical concept, but is due to genome structure of a given species. In particular, karyotypic change appears related to the quantity and chromosomal location of repeated sequences. The congruence between the chromosomal and molecular data shows that chromosomal changes are often valuable phylogenetic characters (Arvicanthis and Mastomys, but not Acomys). However, most importantly the approach underscores the value of incorporating both in order to gain a better understanding of complex patterns of evolution. Moreover, the fact that every cladogenetic event in Mastomys is supported by two pericentric inversions allowed us to hypothesize that genetic differentiation is initiated by the suppression of recombination within inverted segments, and that the accumulation of multiple pericentric inversions reinforces genetic isolation leading to subsequent speciation. Finally, the low sequence divergences distinguishing karyotypically distinct sibling species within Arvicanthis and Mastomys emphasizes the power of combining cytogenetic and molecular approaches for the characterization of unrecognized components of biodiversity.

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2020

Atlas of Mammalian Chromosomes

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Chromosomal characterization of <i>Arvicanthis</i> species (Rodentia, Murinae) from western and central Africa: implications for taxonomy

Cited by 41 publications

References 14 publications

New data on the taxonomy and distribution of Rodentia (Mammalia) from the western and coastal regions of Guinea West Africa

New data on the taxonomy and distribution of Rodentia (Mammalia) from the western and coastal regions of Guinea West Africa

Patterns of karyotype evolution in complexes of sibling species within three genera of African murid rodents inferred from the comparison of cytogenetic and molecular data

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