02455nas a2200265 4500008004100000245011800041210006900159260001200228300001200240490000700252520154500259653002701804653001801831653001401849653001601863653001801879653001301897653002601910653002401936653002201960653002401982100002002006700003202026856013102058 2005 eng d00aStudies on the Robertsonian chromosomal variation of Mus musculus domesticus (Rodentia, Muridae) in Greece0 aStudies on the Robertsonian chromosomal variation of iMus muscul c2005/// a503-5130 v843 aThe karyotype of the house mouse, Mus musculus domesticus, was examined in 282 specimens from 44 localities, in an effort to gain better understanding of the Robertsonian (Rb) variation known to exist in Greece. We consider that an Rb system exists in Peloponnisos, southern Greece, distributed in an area that is substantially larger than previously known. It consists of at least three Rb races with 2n = 30, 2n = 24 and 2n = 28, respectively, the last being reported for the first time in this paper and carrying Rb(3.6), Rb(8.12), Rb(10.14), Rb(13.15), Rb(9.16) and Rb(11.17) in a homozygous state. Additional instances of variation in this Rb system include individuals with 2n = 31 and 32 of variable Rb constitution and hybrids between the Rb races with 2n = 30 and 2n = 24. In southern Peloponnisos, Rb(10.14) was found in either a homozygous or a heterozygous state (2n = 38 or 39). The relationships among the Rb populations of Peloponnisos are discussed and hypotheses for their evolution are proposed. Rb variation was also recorded in two new locations of eastern Sterea Ellas (2n = 28 and 29) and one in Ipiros, north-west Greece (2n = 38). These findings corroborate the existence of two separate Rb systems in those two areas. Moreover, among a number of islands surveyed, Rb variation was only found in Kythira island, with Rb(10.14) in a heterozygous state (2n = 39). Finally, the typical all-acrocentric karyotype (2n = 40) was found in 51 of the animals studied from 13 localities. © 2005 The Linnean Society of London.10aChromosomal speciation10aContact zones10aevolution10aHouse mouse10ahybridization10aMammalia10aMonobrachial homology10aRobertsonian fusion10aRobertsonian race10aRobertsonian system1 aMitsainas, G.P.1 aGiagia-Athanasopoulou, E.B. uhttps://icgf.myspecies.info/content/studies-robertsonian-chromosomal-variation-mus-musculus-domesticus-rodentia-muridae-greece01682nas a2200157 4500008004100000245016500041210006900206260001200275300001200287490000700299520102500306653001301331100003201344700002201376856012601398 1997 eng d00aGeographical distribution and interpopulation variation in the karyotypes of Microtus (Terricola) thomasi (Rodentia, Arvicolidae) in Greece0 aGeographical distribution and interpopulation variation in the k c1997/// a303-3150 v503 aThe karyological analysis of fifty-five voles collected in different localities of Greece showed that they belong to the following cytotypes of Microtus (Terricola) thomasi: «thomasi» 2n = 44; FN = 44, «atticus» 2n = 44; FN = 46, «subalpine» 2n = 42; FN = 42 and «Rb-subalpine» 2n = 40; FN = 42. A comparative study of the G-banding patterns among them showed that the first two, differing in a pericentric inversion, both represent the type species M. (T.) thomasi. Their distribution is intermingled and extends from central Greece to Peloponissos. The «subalpine» cytotypes distributed in mountainous central Greece, in Mt. South Pindos and in lowland of Ipiros, differ by a Robertsonian centric fusion. They display moreover a tandem fusion, a pericentric inversion and addition of heterochromatin which differentiate them to a greater extend from the type species and may consequently be consider to belong to another taxon of «thomasi» complex. The relatioships among these cytotypes is also descussed.10aMammalia1 aGiagia-Athanasopoulou, E.B.1 aStamatopoulos, C. uhttps://icgf.myspecies.info/content/geographical-distribution-and-interpopulation-variation-karyotypes-microtus-terricola