Title:

B chromosome system in populations of Oryzomys flavescens (Rodentia, Cricetidae) from southern Brazil

Creator:

Sbalqueiro, I. J. ; Mattevi, M. S. ; Oliveira, L. F. B. ; Solano, M. J. V.

Place of publishing:

Białowieża

Date issued/created:

1991

Description:

Chromosome studies on 49 specimens collected from 11 Brazilian populations of the rodent species Oryzomys flavescens (Waterhouse, 1837) disclosed 2n=64 in 25 individuals, 2n=65 in 9, 2n=66 in 12, and 2n=64/65 mosaics in 3. This chromosome variation was due to the occurence of one or two extra small heterochromatic acrocentrics, interpreted as B chromosomes. Comparisons made between our data and those previously reported for O. flavescens from Uruguay and Argentina, O. fornesi from Paraguay, and Oryzomys sp. from São Paulo, Brazil, revealed that these taxa share similar karyotypes, suggesting they belong to a single cytotaxonomic group.

Type of object:

Czasopismo/Artykuł

Subject and Keywords:

B chromosomes variation ; Brazil ; Oryzomys flavescens ; population ; Brazylia ; gryzonie

Relation:

Acta Theriologica

Volume:

36

Issue:

1-2

Start page:

193

End page:

199

Resource type:

Tekst

Detailed Resource Type:

Artykuł

Format:

application/pdf

Source:

click here to follow the link

Language:

eng ; Streszcz. ang.

Rights:

Prawa zastrzeżone - dostęp nieograniczony

Terms of use:

Zasób chroniony prawem autorskim. Korzystanie dozwolone w zakresie określonym przez przepisy o dozwolonym użytku.

Digitizing institution:

Instytut Biologii Ssaków Polskiej Akademii Nauk

Original in:

Biblioteka Instytutu Biologii Ssaków PAN

Projects co-financed by:

Program Operacyjny Innowacyjna Gospodarka, lata 2010-2014, Priorytet 2. Infrastruktura strefy B + R ; Unia Europejska. Europejski Fundusz Rozwoju Regionalnego

Access:

Otwarty