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

Object's details: B chromosome system in populations of Oryzomys flavescens (Rodentia, Cricetidae) from southern Brazil

tile.noImage

Provider:Repozytorium Cyfrowe Instytutów Naukowych

Description

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.
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.;
Journal/Article
Object availability:
free access
Rights:
Rights Reserved - Free Access;
Copyright-protected material. May be used within the limits of statutory user freedoms;
Open
Date:
1991.12.31;
1991
Type:
Text;
Article
Language:
English
Source: http://katalog.pan.pl/webpac-bin/223bzbsPL/wgbroker.exe?new+-access+top+search+open+NR+ee95400552
Format:
application/pdf
Relation:
Acta Theriologica
Subject:
B chromosomes variation;
Brazil;
Oryzomys flavescens;
population;
Brazylia;
gryzonie
Data provider:
Repozytorium Cyfrowe Instytutów Naukowych

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