Electrophoretic variability of blood proteins among populations of two genera of african rodents: Arvicanthis and Mastomys from Senegal. Genetic polymorphism and geographic differences

Sykiotis, Michèle; Duplantier, Jean‐Marc; Poulet, Alain

doi:10.1016/0305-1978(87)90095-0

Cited by 9 publications

(6 citation statements)

References 3 publications

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“…(2002), ‘it appears from cytochrome b sequencing data that despite their chromosomal differentiation, West Africa ANI‐1a and ANI‐1b are genetically closer to each other than they are to specimens (ANI‐1a) from Egypt (Ducroz et al ., 1998)’. The minor karyotypic differentiation between the two cytotypes (ANI‐1a and ANI‐1b) was proved to be mostly interfertile in captivity based on west African individuals (Petter et al ., 1969; Kaminski et al ., 1987). Although north‐east African populations have the same ANI‐1a cytotype, they are morphologically and genetically (8.9%) divergent, suggesting a long period of geographical isolation, and it would be useful to conduct breeding tests between Sudanese ANI‐1a and West African ANI‐1a and 1b individuals.…”

Section: Discussionmentioning

confidence: 99%

Phylogeny and historical demography of economically important rodents of the genus Arvicanthis (Mammalia: Muridae) from the Nile Valley: of mice and men

Ahmed

Ducroz²,

Mitchell

et al. 2008

Biological Journal of the Linnean Society

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The present study clarified the taxonomy, phylogeny and historical demography of semicommensal Nile rats (Arvicanthis) from the Nile Valley in Sudan. Nile rats are important crop pests and zoonotic disease reservoirs and are closely associated with agricultural settlements in the Nile Valley. Phylogenetic analysis of the complete cytochrome b gene (1140 bp) of 23 individuals from six localities in Sudan (from two previously recognized species, Arvicanthis niloticus and Arvicanthis testicularis), supported the existence of only a single species, A. niloticus, from the Nile Valley. Historical demography of the Sudanese Nile Valley population inferred from mismatch coefficients indicated that an exponential population expansion event occurred approximately 144 000-288 000 years ago, corresponding in time with early human expansion and colonization from Africa to the Middle East, Europe, and the world. The inferred high level of gene flow and large size of Sudanese Nile populations of A. niloticus is consistent with historically recent (300 years ago) exponential human population growth and intense agricultural activity inferred from archaeological and historical evidence. Two African Arvicanthis clades were well supported by the broader phylogenetic analysis: (1) A. niloticus, Arvicanthis abyssinicus and Arvicanthis neumanni and (2) Arvicanthis rufinus and Arvicanthis ansorgei from western Africa. Within the first clade, divergence between lineages of A. niloticus s.s. from west and north-east Africa (8.9%) suggests specific recognition, but sampling of geographically intermediate localities is required. Based on hypothesized palaeodrainage and palaeoclimatic patterns, we propose a simple model for speciation of Arvicanthis in Africa.

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Section: Discussionmentioning

confidence: 99%

Phylogeny and historical demography of economically important rodents of the genus Arvicanthis (Mammalia: Muridae) from the Nile Valley: of mice and men

Ahmed

Ducroz²,

Mitchell

et al. 2008

Biological Journal of the Linnean Society

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“…They have included cytogenetic (Capanna and Civitelli, 1988;Civitelli et al, 1995;Ducroz et al, 1997;Granjon et al, 1992;Orlov et al, 1992;Volobouev et al, 1988), electrophoretic (Capula et al, 1997;Kaminski et al, 1987), sperm morphology (Baskevich and Lavrenchenko, 1994), DNA/DNA hybridization (Ducroz et al, 1997), morphometrics (Afework Bekele et al, 1993;Corti and Fadda, 1996), and reproductive analyses (Ducroz et al, 1997), but a comprehensive assessment of species limits and interrelationships using a molecular approach was yet to be done. The cyt b proved to be a suitable molecular marker for the resolution of internal relationships within the genus Arvicanthis.…”

Section: Cyt B Gene Sequence and Phylogenetic Informationmentioning

confidence: 98%

A Molecular Perspective on the Systematics and Evolution of the GenusArvicanthis(Rodentia, Muridae): Inferences from Complete CytochromebGene Sequences

Ducroz¹,

Volobouev

Granjon³

1998

Molecular Phylogenetics and Evolution

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“…It follows from these data that ANI-1a is a paraphyletic assemblage and that ANI-1b, with its metacentric pair 30, undoubtedly represents the derived condition. This minor karyotypic differentiation thus appears of dubious taxonomic value, even more so when considering that ANI-1a and ANI-1b were shown to be inter-fertile in captivity (Kaminski et al, 1987;Petter et al, 1969). One can nevertheless point out the conspicuous karyotypic stability and geographic unity of the ANI-1a and ANI-1b groupings.…”

Section: Proposed Taxonomic Revisionmentioning

confidence: 99%

“…However, enzymatic (Kaminski et al, 1984(Kaminski et al, , 1987Capula et al, 1997), chromosomal (Volobouev et al, 1987(Volobouev et al, , 1988Capanna and Civitelli, 1988;Granjon et al, 1992;Civitelli et al, 1995;Capanna et al, 1996;Corti et al, 1996;Ducroz et al, 1997), molecular (Ducroz et al, 1997, and geometrical morphometric (Fadda, 1998;Fadda and Corti, 1998) analyses contradict such a taxonomic arrangement. In particular, chromosome banding studies have revealed the existence of four chromosomal forms, provisionally labeled as ANI-1, ANI-2, ANI-3, and ANI-4 (Ducroz, 1998), differing from each other by a series of chromosomal rearrangements likely to provide strong reproductive isolation, as corroborated between ANI-1 and ANI-3 by laboratory crossbreeding experiments (Ducroz et al, 1997).…”

mentioning

confidence: 99%

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

Volobouev

Ducroz

Анискин

et al. 2002

Cytogenet Genome Res

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A chromosome study of unstriped grass rats of the genus Arvicanthis (Rodentia, Murinae) in western and central Africa is presented. The observations extend the data available to 242 specimens from 59 localities. All individuals karyotyped belong to four karyotypic forms, or cytotypes, earlier described as ANI-1, ANI-2, ANI-3, and ANI-4 and are presumed to correspond to four distinct species. In order to provide diagnostic characters for these western and one central African Arvicanthis species, we standardized the chromosomal data available and developed a G- and C-banded chromosome nomenclature that allows easy species identification. Each form is characterized by a distinct geographical distribution, roughly following the biogeographical domains of western Africa, although their precise limits remain to be assessed. The sole area of sympatry detected is the region of the inner delta of the Niger River, where both ANI-1 and ANI-3 can be found. It is proposed that the three western African species ANI-1, ANI-3, and ANI-4 be renamed as A. niloticus, A. ansorgei, and A. rufinus, respectively.

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Electrophoretic variability of blood proteins among populations of two genera of african rodents: Arvicanthis and Mastomys from Senegal. Genetic polymorphism and geographic differences

Cited by 9 publications

References 3 publications

Phylogeny and historical demography of economically important rodents of the genus Arvicanthis (Mammalia: Muridae) from the Nile Valley: of mice and men

Phylogeny and historical demography of economically important rodents of the genus Arvicanthis (Mammalia: Muridae) from the Nile Valley: of mice and men

A Molecular Perspective on the Systematics and Evolution of the GenusArvicanthis(Rodentia, Muridae): Inferences from Complete CytochromebGene Sequences

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

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