A chromosomal study on Greek populations of the genus Apodemus [Rodentia, Murinae] reveals new data on B chromosome distribution

• Autorzy: Rovatsos M. T. , Mitsainas G.P. , Tryfonopoulos G.A. , Stamatopoulos C. , Giagia-Athanasopoulou E.B.
• Języki publikacji: EN

Abstrakty

EN

During this study, 94 specimens (51 males, 43 females) of the wood mouseApodemus sylvaticus (Linnaeus, 1758), the yellow-necked mouseA. flavicollis (Melchior, 1834) and the western broad-toothed mouseA. epimelas (Nehring, 1902) from 20 localities of Greece were karyologically examined. The first two species were found to be widely distributed and their otherwise very similar karyotype (2n=48, FN=48) could be clearly distinguished, based on C-banding pattern. The third species appeared to have a more limited geographical distribution and its karyotype was distinguished from that of the previous two species, since it contained two pairs of small metacentric autosomes (2n=48, FN=52). The chromosomal study further revealed that nine individuals ofA. flavicollis possessed supernumerary B chromosomes (2n=49–50, FN=49–50). Meiotic chromosome preparations revealed that in contrast to sex chromosomes and autosomes, B chromosomes do not participate in bivalent formation. On the other hand, no supernumerary chromosomes were found in the studiedA. sylvaticus andA. epimelas material.

Słowa kluczowe

EN

Murinae; chromosomal evolution; geographic distribution; yellow-necked mouse; Apodemus epimelas; Rodentia; Apodemus flavicollis; broad-toothed mouse; C-banding; karyotype; B chromosome; Apodemus sylvaticus; wood mouse; G-banding

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 2008
• Tom: 53
• Numer: 2
• Opis fizyczny: p.157-167,fig.,ref.

Twórcy

autor

Rovatsos M. T.

• University of Patras, GR-26500 Rio, Greece

autor

Mitsainas G.P.

autor

Tryfonopoulos G.A.

autor

Stamatopoulos C.

autor

Giagia-Athanasopoulou E.B.

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