Occurrence of Akodon cursor (Rodentia, Cricetidae) with 14, 15 and 16 chromosome cytotypes in the same geographic area in Southern Brazil

Sbalqueiro, Ives José; Nascimento, André Paulo

doi:10.1590/S0100-84551996000400005

Abstract

The karyotype of Akodon cursor (initially identified as A. arviculoides) had been reported with chromosomal numbers 14 and 15 in the South and Southeast and 16 in Northeastern Brazil. We found the three cytotypes in a region of Southern Brazil. The G-band patterns of these specimens were the same as those from southeastern and northeastern regions. Seventeen different combinations of chromosomes due to a complex rearrangement in pair 1 and pericentric inversions in pairs 2 and 3 were identified. Seven of these combinations are new to in the literature.

Akodon cursor; chromosome cytotypes; Southern Brazil

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Occurrence of Akodon cursor (Rodentia, Cricetidae) with 14, 15 and 16 chromosome cytotypes in the same geographic area in Southern Brazil

Ives José Sbalqueiro; André Paulo Nascimento

Departamento de Genética, Setor de Ciências Biológicas, Uni3versidade Federal do Paraná, Caixa Postal 19071, 81531-990 Curitiba, PR, Brasil. E-mail: ivesjs@bio.ufpr.br. Send correspondence to I.J.S.

ABSTRACT

The karyotype of Akodon cursor (initially identified as A. arviculoides) had been reported with chromosomal numbers 14 and 15 in the South and Southeast and 16 in Northeastern Brazil. We found the three cytotypes in a region of Southern Brazil. The G-band patterns of these specimens were the same as those from southeastern and northeastern regions. Seventeen different combinations of chromosomes due to a complex rearrangement in pair 1 and pericentric inversions in pairs 2 and 3 were identified. Seven of these combinations are new to in the literature.

Keywords:Akodon cursor; chromosome cytotypes; Southern Brazil.

Bianchi, N.O., Contreras, J.R. and Dulont, E.N. (1969). Intraspecies autosomal polymorphism and chromosome replication in Akodon molinae (Rodentia, Cricetidae). Can. J. Genet. Cytol. 11: 233-242.
Bianchi, N.O., Reig, O.A., Molina, O. and Dulont, E.N. (1971). Cytogenetics of the South American Akodon rodents (Cricetidae). I. A progress report of Argentinian and Venezuelan forms. Evolution 25: 724-736.
Bianchi, N.O., Vidal-Rioja, L. and Bianchi, M.S.A. (1973). Constitutive heterochromatin, G-bands and Robertsonian rearrangements in the chromosomes of Akodon molinae (Rodentia, Cricetidae). Can. J. Genet. Cytol. 15: 855-861.
Bianchi, N.O., Merani, S. and Lizarralde, M.S. (1979). Cytogenetics of the South American akodont rodents (Cricetidae). VI. Polymorphism in Akodon dolores (Thomas). Genetica 50: 99-104.
Bossle, R.C., Alzão, C.R., Beck, A.D., Sbalqueiro, I.J. and Lange, M.B.R. (1988). Estudos cromossômicos em dois gêneros de roedores da família Cricetidae coletados na Serra do Mar no Estado do Paraná. Resumos do XV Congresso Brasileiro de Zoologia, 521. Curitiba, 31 de janeiro a 05 de fevereiro de 1988, pp. 683.
Fagundes, V. (1993). Análises cromossômicas e dos complexos sinaptonêmicos em roedores brasileiros das famílias Cricetidae e Echimidae. Master's thesis, Universidade de São Paulo, São Paulo.
Ford, C.E. and Hamerton, J.L. (1956). A colchicine hypotonic citrate squash sequence for mammalian chromosomes. Stain. Tech. 31: 247-251.
Kiblisky, P., Merani, S., Molina, O. and Bianchi, N.O. (1976). Citogenética de los roedores sudamericanos akodontinos (Cricetidae). III. Polimorfismos cromossômicos intraespecíficos en Akodon dolores Thomas. Mendeliana 1: 97-103.
King, M. (1987). Chromosomal rearrangements, specification and the theoretical approach. Heredity 59: 1-6.
King, M. (1993). Species Evolution - the Role of Chromosome Change. Cambridge University Press, Cambridge, pp. 336.
Maia, V. and Langguth, A. (1981). Karyotypes of Brazilian Akodont rodents with notes on Taxonomy. Z. Säugetierk 46: 241-249.
Myers, P. and Patton, J.L. (1989). A new species of Akodon from the cloud forests of eastern Cochabamba Department, Bolivia (Rodentia: Sigmodontinae). Occas. Pap. Mus. Zool. 720: 1-28.
Seabright, M. (1971). A rapid banding technique for human chromosome. Lancet 2: 971-972.
White, M.J.D. (1978). Modes of Speciation. W.H. Freeman and Company, San Francisco, pp. 455.
Yonenaga, Y. (1972). Chromosomal polymorphisms in the rodent Akodon arviculoides ssp. (2n = 14) resulting from two pericentric inversions. Cytogenetics 11: 488-499.
Yonenaga, Y., Kasahara, S., Almeida, E.J.C. and Peracchi, A.L. (1975). Chromosomal banding patterns in Akodon arviculoides (2n = 14), Akodon sp (2n = 24 and 25), and two male hybrids with 19 chromosomes. Cytogenet. Cell Genet. 15: 388-399.
Yonenaga-Yassuda, Y. (1979). New karyotypes and somatic and germ-cell banding in Akodon arviculoides (Rodentia, Cricetidae). Cytogenet. Cell Genet. 23: 241-249.
Yonenaga-Yassuda, Y., Assis, M.F.L., Kasahara, S., L'Abbate, M. and Souza, M.J. (1983). Nucleolar organizer regions in Akodon arviculoides (Cricetidae, Rodentia): evidence for the activity of rDNA genes in both X chromosomes of females. Cytogenet. Cell Genet. 35: 143-147.
Yonenaga-Yassuda, Y., Pereira, L.A. and L'Abbate, M. (1987). Chromosomal polymorphism in Akodon reinhardti Langguth, 1975 (Rodentia, Cricetidae). Rev. Bras. Genet. 10: 199-208.

Publication Dates

Publication in this collection
31 Oct 2006
Date of issue
1996

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] Bianchi, N.O., Contreras, J.R. and Dulont, E.N. (1969). Intraspecies autosomal polymorphism and chromosome replication in Akodon molinae (Rodentia, Cricetidae). Can. J. Genet. Cytol. 11: 233-242.

[2] Bianchi, N.O., Reig, O.A., Molina, O. and Dulont, E.N. (1971). Cytogenetics of the South American Akodon rodents (Cricetidae). I. A progress report of Argentinian and Venezuelan forms. Evolution 25: 724-736.

[3] Bianchi, N.O., Vidal-Rioja, L. and Bianchi, M.S.A. (1973). Constitutive heterochromatin, G-bands and Robertsonian rearrangements in the chromosomes of Akodon molinae (Rodentia, Cricetidae). Can. J. Genet. Cytol. 15: 855-861.

[4] Bianchi, N.O., Merani, S. and Lizarralde, M.S. (1979). Cytogenetics of the South American akodont rodents (Cricetidae). VI. Polymorphism in Akodon dolores (Thomas). Genetica 50: 99-104.

[5] Bossle, R.C., Alzão, C.R., Beck, A.D., Sbalqueiro, I.J. and Lange, M.B.R. (1988). Estudos cromossômicos em dois gêneros de roedores da família Cricetidae coletados na Serra do Mar no Estado do Paraná. Resumos do XV Congresso Brasileiro de Zoologia, 521. Curitiba, 31 de janeiro a 05 de fevereiro de 1988, pp. 683.

[6] Fagundes, V. (1993). Análises cromossômicas e dos complexos sinaptonêmicos em roedores brasileiros das famílias Cricetidae e Echimidae. Master's thesis, Universidade de São Paulo, São Paulo.

[7] Ford, C.E. and Hamerton, J.L. (1956). A colchicine hypotonic citrate squash sequence for mammalian chromosomes. Stain. Tech. 31: 247-251.

[8] Kiblisky, P., Merani, S., Molina, O. and Bianchi, N.O. (1976). Citogenética de los roedores sudamericanos akodontinos (Cricetidae). III. Polimorfismos cromossômicos intraespecíficos en Akodon dolores Thomas. Mendeliana 1: 97-103.

[9] King, M. (1987). Chromosomal rearrangements, specification and the theoretical approach. Heredity 59: 1-6.

[10] King, M. (1993). Species Evolution - the Role of Chromosome Change. Cambridge University Press, Cambridge, pp. 336.

[11] Maia, V. and Langguth, A. (1981). Karyotypes of Brazilian Akodont rodents with notes on Taxonomy. Z. Säugetierk 46: 241-249.

[12] Myers, P. and Patton, J.L. (1989). A new species of Akodon from the cloud forests of eastern Cochabamba Department, Bolivia (Rodentia: Sigmodontinae). Occas. Pap. Mus. Zool. 720: 1-28.

[13] Seabright, M. (1971). A rapid banding technique for human chromosome. Lancet 2: 971-972.

[14] White, M.J.D. (1978). Modes of Speciation. W.H. Freeman and Company, San Francisco, pp. 455.

[15] Yonenaga, Y. (1972). Chromosomal polymorphisms in the rodent Akodon arviculoides ssp. (2n = 14) resulting from two pericentric inversions. Cytogenetics 11: 488-499.

[16] Yonenaga, Y., Kasahara, S., Almeida, E.J.C. and Peracchi, A.L. (1975). Chromosomal banding patterns in Akodon arviculoides (2n = 14), Akodon sp (2n = 24 and 25), and two male hybrids with 19 chromosomes. Cytogenet. Cell Genet. 15: 388-399.

[17] Yonenaga-Yassuda, Y. (1979). New karyotypes and somatic and germ-cell banding in Akodon arviculoides (Rodentia, Cricetidae). Cytogenet. Cell Genet. 23: 241-249.

[18] Yonenaga-Yassuda, Y., Assis, M.F.L., Kasahara, S., L'Abbate, M. and Souza, M.J. (1983). Nucleolar organizer regions in Akodon arviculoides (Cricetidae, Rodentia): evidence for the activity of rDNA genes in both X chromosomes of females. Cytogenet. Cell Genet. 35: 143-147.

[19] Yonenaga-Yassuda, Y., Pereira, L.A. and L'Abbate, M. (1987). Chromosomal polymorphism in Akodon reinhardti Langguth, 1975 (Rodentia, Cricetidae). Rev. Bras. Genet. 10: 199-208.