Abstract
The African pygmy mice, subgenus Nannomys, constitute the most speciose lineage of the genus Mus with 19 recognized species. Although morphologically very similar, they exhibit considerable chromosomal diversity which is here confirmed and extended by the G-banding analysis of 65 mice from West and South Africa. On the basis of their karyotype and distribution area, the specimens were assigned to at least five species. Extensive differentiation both within and between species was observed that involved almost exclusively Robertsonian translocations, 23 of which are newly described. Two of the rearrangements were sex chromosome-autosome translocations, associated in some cases with partial deletions of the X or Y chromosomes. Several authors have predicted that the highly deleterious effect of this rearrangement would be reduced if the sex and autosomal segments were insulated by a block of centromeric heterochromatin. The C-banding analyses performed showed that among the species carrying X-autosome translocations, one followed the expected pattern, while the other did not. In this case, functional isolation of the sex and autosome compartments must involve other repetitive sequences or genomic traits that require further molecular characterization. Such studies will provide insight into the causes and consequences of the high diversity of sex chromosome rearrangements in this subgenus.
Similar content being viewed by others
References
Aniskin VM, Lavrenchenko LA, Varshavskii AA, Milishnikov AN (1998) Karyotypes and cytogenetic differentiation of two african mouse species of genus Mus (Rodentia, Muridae). Russ J Genet 34: 80–85.
Arakawa Y, Nishida-Umehara C, Matsuda Y, Sutou S, Suzuki H (2002) X-chromosomal localization of mammalian Y-linked genes in two XO species of the Ryukyu spiny rat. Cytogenet Genome Res 99: 303–309.
Ashley T (2002) X-autosome translocations, meiotic synapsis, chromosome evolution and speciation. Cytogenet Genome Res 96: 33–39.
Bailey JA, Carrel L, Chakravarti A, Eichler EE (2000) Molecular evidence for a relationship between LINE-1 elements and X chromosome inactivation: the Lyon repeat hypothesis. Proc Natl Acad Sci USA 97: 6634–6639.
Banaszek A, Fedyk S, Szalaj KA, Chetnicki W (2000) A comparison of spermatogenesis in homozygotes, simple Robertsonian heterozygotes and complex heterozygotes of the common shrew (Sorex araneus L.). Heredity 84: 570–577.
Bianchi NO (2002) Akodon sex reversed females: the never ending story. Cytogenet Genome Res 96: 60–65.
Britton-Davidian J, Catalan J, Ramalhinho MDG et al. (2000) Rapid chromosomal evolution in island mice. Nature 403: 158.
Bronner GN, Hoffmann M, Taylor PJ et al. (2003) A revised systematic checklist of the extant mammals of the southern African subregion. Durban Museum Novitates 28: 56–106.
Castiglia R, Capanna E (2000) Contact zone between chromosomal races of Mus musculus domesticus. 2. Fertility and segregation in laboratory-reared and wild mice heterozygous for multiple Robertsonian rearrangements. Hereditas 85: 147–156.
Castiglia R, Gormung E, Corti M (2002) Cytogenetic analyses of chromosomal rearrangements in Mus minuto?des/ musculo?des from North-West Zambia through mapping of the telomeric sequence (TTAGGG)n and banding techniques. Chromosome Res 10: 399–406.
Catzeflis F, Denys C (1992) The African Nannomys (Muridae): an early offshoot from the Mus lineage. Evidence from scnDNA hybridization experiments and compared morphology. Israel J Zool 38: 219–231.
Delneri D, Colson I, Grammenoudi S, Roberts IN, Louis EJ, Oliver SG (2003) Engineering evolution to study speciation in yeasts. Nature 422: 68–72.
Dobigny G, Aniskin V, Volobouev V (2002) Explosive chromosome evolution and speciation in the gerbil genus Taterillus (Rodentia; Gerbillinae): a case of two new cryptic species. Cytogenet Genome Res 96: 117–124.
Dobigny G, Ozouf-Costaz C, Bonillo C, Volobouev V (submitted) Viability of X-autosome translocations in mammals: an epigenomic hypothesis from a rodent case-study.
Evans EP, Breckon G, Ford CE (1964) An air-drying method for meiotic preparations from mammalian testes. Cytogenetics 3: 289–294.
Fredga K (1965) A new sex determining in a mammal. Chromosomes of Indian mongoose (Herpestes auropunctatus). Hereditas 52: 411–420.
Fredga K (1972) Comparative chromosome studies in mongooses (Carnivora, Viverridae). I. Idiograms of 12 species and karyotype evolution in Herpestinae. Hereditas 71: 1–74.
Garagna S, Redi CA, Zuccoti M, Britton-Davidian J, Winking H (1990) Kinetics of oogenesis in mice heterozygous for Robertsonian translocations. Differentiation 42: 167–171.
Garagna S, Marziliano N, Zuccotti M, Searle J, Capanna E, Redi CA (2001) Pericentromeric organization at the fusion point of mouse Robertsonian translocation chromosomes. Proc Natl Acad Sci USA 98: 171–175.
Grant PR (1981) Speciation and the adaptive radiation of the Darwin's Finches. Am Sci 69: 653–663.
Gropp A, Winking H, Redi C (1982) Consequences of Robertsonian heterozygosity: segregational impairment of fertility versus male-limited sterility. In: Crosignani PG, Rubin BL, eds. Serono Clinical Colloquia on Reproduction N o 3. New York: Academic Press/Grune and Stratton 3: 115–134.
Hauffe HC, Searle JB (1998) Chromosomal heterozygosity and fertility in house mice (Mus musculus domesticus) from Northern Italy. Genetics 150: 1143–1154.
Jaafar H, Gabriel-Robez O, Rumpler Y (1993) Chromosomal anomalies and disturbance of transcriptional activity at the pachytene stage of meiosis: relationship to male sterility. Cytogenet Cell Genet 64: 273–280.
Jotterand M (1970) Un nouveau système polymorphe robertsonien chez une nouvelle espèce de 'Leggada' (Mus goundae Petter). Experientia 26: 1360–1361.
Jotterand M (1972) Le polymorphisme chromosomique des Mus (Leggadas) africains. Cytogénétique, zoogéographie, évolution. Rev Suisse Zool 79: 287–359.
Jotterand-Bellomo M (1984) L'analyse cytogénétique de deux espèces de Muridae africains, Mus oubanguii et Mus minutoides/musculoides: polymorphisme chromosomique et ébauche d'une phylogénie. Cytogenet Cell Genet 38: 182–188.
Jotterand-Bellomo M (1986) Le genre Mus africain, un exemple d'homogénéité caryotypique: étude cytogénétique de Mus minutoides/musculoides (Cô te d'Ivoire), de M. setulosus (République Centrafricaine), et de M. mattheyi (Burkina Faso). Cytogenet Cell Genet 42: 99–104.
Jotterand-Bellomo M (1988) Chromosome analysis of five specimens of Mus bufo-triton (Muridae) from Burundi (Africa): three cytogenetic entities, a special type of chromosomal sex determination, taxonomy, and phylogeny. Cytogenet Cell Genet 48: 88–91.
Just W, Rau W, Vogel W et al. (1995) Absence of SRY in species of the vole Ellobius. Nature Genet 11: 117–118.
Just W, Baumstark A, Hameister H et al. (2002) The sex determination in Ellobius lutescens remains bizarre. Cytogenet Genome Res 96: 146–153.
King M (1993) Species evolution. The role of chromosome change. Cambridge: Cambridge University Press.
Lee MR, Elder FFB (1980) Yeast stimulation of bone marrow mitosis for cytogenetic investigations. Cytogenet Cell Genet 26: 36–40.
Losos JB, Jackman TR, Larson A, de Queiroz Q, Rodriguez-Schettino L (1998) Contingency and determinism in replicated adaptive radiations of island lizards. Science 279: 2115–2118.
Macholan M (2001) Multivariate analysis of morphometric variation in Asian Mus and sub-saharan Nannomys (Rodentia: Muridae). Zool Anz 240: 7–14.
Marshall JT (1981) Taxonomy. In: Foster HL, Small JD, Fox JG, eds. The mouse in biomedical research, volume 1. New York: Academic Press, pp 17–26.
Matthey R (1952) Chromosomes de Muridae (Microtinae et Cricetinae). Chromosoma 5: 113–138.
Matthey R (1959) Formules chromosomiques de Muridae et Spalacidae. La question du polymorphisme chromosomique chez les mammifères. Rev Suisse Zool 66: 175–209.
Matthey R (1964) Evolution chromosomique et spéciation chez les Mus du sous-genre Leggada. Experientia 20: 657–665.
Matthey R (1965) Etudes de cytogénétique sur les Murinae africains appartenant aux genres Arvicanthis, Praomys, Acomys et Mastomys (Rodentia). Mammalia 29: 228–249.
Matthey R (1966) Le polymorphisme chromosomique des Mus africains du sous-genre Leggada. Révision générale portant sur l'analyse de 213 individus. Rev Suisse Zool 73: 585–607.
Matthey R (1967) Cytogénétique des Leggada: (1) la formule chromosomique de Mus (Leggada) bufo, (2) Nouvelles données sur la délétion portant sur le bras court d'un X chez Mus (Leggada) triton. Experientia 23: 133–134.
Matthey R (1970) Nouvelles données sur la cytogénétique et la spéciation des Leggada (Mammalia-Rodentia-Muridae). Experientia 26: 102–103.
Mercer SJ, Wallace BMN, Searle JB (1992) Male common shrews (Sorex araneus) with long chain configurations can be fertile: implications for chromosomal models of speciation. Cytogenet Cell Genet 60: 68–73.
Metcalfe CJ, Eldridge MDB, Toder R, Johnston PG (1998) Mapping the distribution of the telomeric sequence (T2AG3)n in the Macropodoidea (Marsupialia), by fluorescence in situ hybridization. I. The swamp wallaby, Wallabia bicolor. Chromosome Res 6: 603–610.
Musser GG, Carleton MD (1993) Family Muridae. In: Wilson DE, Reeder DM, eds. Mammal species of the world. A taxonomic and geographic reference. Washington and London: Smithsonian Institution Press, pp 501–755.
Neitzel H (1987) Chromosome evolution of Cervidae: karyotypic and molecular aspects. In: Obe G, Basler A, eds. Cytogenetics. Berlin, Heidelberg: Springer-Verlag, pp 90–112.
Pack SD, Borodin PM, Serov OL, Searle JB (1993) The Xautosome translocation in the common shrew (Sorex araneus L.): late replication in female somatic cells and pairing in male meiosis. Chromosoma 102: 355–360.
Parish DA, Vise P, Wichman HA, Bull JJ, Baker RJ (2002) Distribution of LINEs and others repetitive elements in the karyotype of the bat Carollia: implications for X-chromosome inactivation. Cytogenet Genome Res 96: 191–197.
Petter F (1963) Contribution à la connaissance des souris africaines. Mammalia 27: 602–607.
Petter F (1981) Les souris africaines du groupe sorella (Rongeurs, Muridés). Mammalia 45: 313–320
Pialek J, Hauffe HC, Rodriguez-Clark KM, Searle JB (2001) Raciation and speciation in house mice from the Alps: the role of chromosomes. Mol Ecol 10: 613–625.
Ratomponirina C, Viegas-Péquignot E, Dutrillaux B, Petter F, Rumpler Y (1986) Synaptonemal complexes in Gerbillidae: probable role of intercaled heterochromatin in gonosomeautosome translocations. Cytogenet Cell Genet 43: 161–167.
Redi CA, Capanna E (1988) Robertsonian heterozygotes in the house mouse and the fate of their germ cells. In: Daniel A, eds. The cytogenetics of mammalian autosomal rearrangements. New York: Alan R. Liss, Inc., pp 315–359.
Redi CA, Garagna S, Capanna E (1990) Nature's experiment with in situ hybridization? A hypothesis for the mechanism of Rb fusion. J Evol Biol 3: 133–137.
Rieseberg LH (2001) Chromosomal rearrangements and speciation. Trends Ecol Evol 16: 351–358.
Rodrigues Noronha RC, Nagamachi CY, Pieczarka JC, Marques-Aguiar S, De Souza Barros RM (2001) Sex-autosome translocations: meiotic behaviour suggests an inactivation block with permanence of autosomal gene activity in Phyllostomids bats. Caryologia 54: 267–277.
Rokas A, Holland PWH (2000) Rare genomic changes as a tool for phylogenetics. Trends Ecol Evol 15: 454–459.
Sa?d K, Saad A, Auffray JC, Britton-Davidian J (1993) Fertility estimates in the Tunisian all-acrocentric and Robertsonian populations of the house mouse and their chromosomal hybrids. Heredity 71: 532–538.
Sato A, O'hUigin C, Figueroa F et al. (1999) Phylogeny of Darwin's finches as revealed by mtDNA sequences. Proc Natl Acad Sci USA 96: 5101–5106.
Seabright J (1971) A rapid technique for human chromosomes. Lancet II: 971–972.
Searle JB (1993) Chromosomal hybrid zones in eutherian mammals. In: Harrison RG, eds. Hybrid zones and the evolutionary process. Oxford: Oxford University Press, pp 309–353.
Sumner AT (1972) A simple technique for demonstrating centromeric heterochromatin. Exp Cell Res 75: 304–306.
Sutou S, Mitsui Y, Tsuchiya K (2001) Sex determination without the Y chromosome in two Japanese rodents Tokudaia osimensis osimensis and Tokudaia osimensis spp. Mamm Genome 12: 17–21.
Tucker PK (1986) Sex chromosome-autosome translocations in the leaf-nosed bats, family Phyllostomidae. I. Mitotic analyses of the subfamilies Stenodermatinae and Phyllostominae. Cytogenet Cell Genet 43: 19–27.
Vassart M, Seguela A, Hayes H (1995) Chromosomal evolution in Gazelles. J Hered 86: 216–227.
Viegas-Péquignot E, Benazzou T, Dutrillaux B, Petter F (1982) Complex evolution of sex chromosomes in Gerbillidae (Rodentia). Cytogenet Cell Genet 34: 158–167.
Volobouev V, Granjon L (1996) A finding of the XX/XY1Y2 sex-chromosome system in Taterillus arenarius (Gerbillinae, Rodentia) and its phylogenetic implications. Cytogenet Cell Genet 75: 45–48.
Yang F, O'Brien PCM, Wienberg J, Ferguson-Smith MA (1997) A reappraisal of the tandem fusion theory of karyotype evolution in the Indian muntjac using chromosome painting. Chromosome Res 5: 109–117.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Veyrunes, F., Catalan, J., Sicard, B. et al. Autosome and Sex Chromosome Diversity Among the African Pygmy Mice, Subgenus Nannomys (Murinae; Mus). Chromosome Res 12, 369–382 (2004). https://doi.org/10.1023/B:CHRO.0000034098.09885.e6
Issue Date:
DOI: https://doi.org/10.1023/B:CHRO.0000034098.09885.e6