Chromosomal Polymorphism in Thracian Populations of Rattus rattus (Linnaeus, 1758) (Rodentia: Muridae)

The black rat (Rattus rattus L.) from Thrace is an Oceanian type (2n = 38). Chromosomal analyses show that a polymorphism occurs in chromosome pairs no. 9, 10, and 13 due to pericentric inversions. In the studied populations, the frequencies of homozygous and heterozygous individuals did not differ from the Hardy-Weinberg equilibrium for chromosome pair no. 13. In both Gelibolu and Pınarhisar populations of R. rattus, a polymorphism due to the supernumerary B-chromosome was found. The R. rattus karyotype with supernumerary chromosomes is reported here for the first time in Turkey. The number of diploid chromosomes are 2n = 38, 2n = 38 + B, and 2n = 38 + 2B. The chromosomal differences were recorded in the number of autosomal arms (NFa), ranging from 58 to 62. The supernumerary metacentric chromosomes were similar in morphology and size to the small metacentric chromosomes of the standard complement of 2n = 38 chromosomes.

Chromosomal Polymorphism in Thracian Populations of Rattus rattus (Linnaeus, 1758) (Rodentia: Muridae)

The black rat (Rattus rattus L.) from Thrace is an Oceanian type (2n = 38). Chromosomal analyses show that a polymorphism occurs in chromosome pairs no. 9, 10, and 13 due to pericentric inversions. In the studied populations, the frequencies of homozygous and heterozygous individuals did not differ from the Hardy-Weinberg equilibrium for chromosome pair no. 13. In both Gelibolu and Pınarhisar populations of R. rattus, a polymorphism due to the supernumerary B-chromosome was found. The R. rattus karyotype with supernumerary chromosomes is reported here for the first time in Turkey. The number of diploid chromosomes are 2n = 38, 2n = 38 + B, and 2n = 38 + 2B. The chromosomal differences were recorded in the number of autosomal arms (NFa), ranging from 58 to 62. The supernumerary metacentric chromosomes were similar in morphology and size to the small metacentric chromosomes of the standard complement of 2n = 38 chromosomes.
Turkish Journal of Zoology-Cover
  • ISSN: 1300-0179
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
Sayıdaki Diğer Makaleler

Effects of Dimethoate on Tree Frog (Hyla arborea) Larvae

Ferah SAYIM, Uğur KAYA

İstilacı Bir Balık Türü, Pseudorasbora parva (Temminck & Schlegel, 1846)’nın Türkiye’deki Dağılımı

Fitnat Güler EKMEKÇİ, Şerife Gülsün KIRANKAYA

Bioecology of the Orthoptera Species of the Setifian Plateau, North-East Algeria

Mustapha BOUNECHADA, Salah Eddine DOUMANDJI, Battal ÇIPLAK

Two new records of Hydrophilid (Coleoptera: Hydrophilidae species of the Turkish Fauna

Ümit İNCEKARA, Abdullah MART, Rüstem HAYAT

İstilacı Bir Balık Türü, Pseudorasbora parva (Temminck & Schlegel, 1846)’nın Türkiye’deki Dağılımı

Fitnat Güler EKMEKÇİ, Şerife Gülsün KIRANKAYA

Homa Dalyanı’nda (İzmir Körfezi, Ege Denizi) Altınbaş Kefal’in Liza aurata (Risso, 1810) Yafl, Büyüme ve Efşey Oranı

Akın Türker İLKYAZ, Kürşat FIRAT, Şahin SAKA, Hasan Tuncay KINACIGİL

Morphological and Biometrical Comparisons of Mesocricetus Nehring, 1898 (Mammalia: Rodentia) species distributed in the Palaearctic Region

Nuri YIĞIT, Ercüment ÇOLAK, Rolf GATTERMANN, Karsten NEUMANN, Şakir ÖZKURT, Mohammad Moradi GHARKHELOO, Peter FRITZSCHE, Reyhan ÇOLAK

A New record for the Turkish pseudoscorpion fauna; Lamprochernes savignyi (Simon, 1881) (Arachnida, Pseudoscorpionida)

Fatih SEZEK, Muhlis ÖZKAN

Age growth, and sex of golden grey mullet, Liza aurata (Risso, 1810) in homa lagoon (Risso, 1810) in homa lagoon (İzmir bay, Aegean Sea)

H. Tuncay KINACIGİL, Akın Türkler İLKYAZ, Kürşat SAKA, Kürşat FIRAT

Bat Diversity and Conservation in Jordan

Zuhair Sami AMR, Mohammad Adnan ABU BAKER, Mazin Botros QUMSIYEH