Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae).
Anopheles (Nyssorhynchus) albitarsis sensu lato is an important malaria vector in Brazil, especially in the Brazilian Amazon region. Chromosome preparations of fourth-instar larvae of A. albitarsis from Iranduba and Coari (AM) and Ilha Comprida (SP) were analyzed for karyotype determination and to i...
| Autor principal: | Rafael, Míriam Silva |
|---|---|
| Outros Autores: | dos Santos-Junior, Ivanildo Pereira, Tadei, Wanderli Pedro, Sallum, Maria Anice Mubeb, Forattini, Oswaldo Paulo |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Genetics and Molecular Research
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/15014 https://geneticsmr.com/sites/default/files/articles/year2005/vol4-4/pdf/gmr0184.pdf |
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oai:repositorio:1-15014 |
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oai:repositorio:1-15014 Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). Rafael, Míriam Silva dos Santos-Junior, Ivanildo Pereira Tadei, Wanderli Pedro Sallum, Maria Anice Mubeb Forattini, Oswaldo Paulo Animals Animals Disease Anopheles Brasil Disease Carrier Female Genetics Human Karyotyping Larva Male Methodology Sex Chromosome Animal Anopheles Brasil Female Humans Insect Vectors Karyotyping Larva Male Sex Chromosomes Anopheles (Nyssorhynchus) albitarsis sensu lato is an important malaria vector in Brazil, especially in the Brazilian Amazon region. Chromosome preparations of fourth-instar larvae of A. albitarsis from Iranduba and Coari (AM) and Ilha Comprida (SP) were analyzed for karyotype determination and to improve cytogenetic identification of this species. Anopheles albitarsis possesses 2n = 6 chromosomes, with two pairs (submetacentric and metacentric) of autosomes and one pair of sex chromosomes, with X-Y dimorphism. The sex pair is homomorphic and acrocentric in females and heteromorphic in males, with a punctiform Y chromosome. Somatic pairing was detected in the prometaphase and metaphase chromosomes of the three A. albitarsis populations. Apparently, sex chromosome evolution in the Culicidae does not function as does evolution in the Culicidae, since it occurs in the subfamily Anophelinae, which possesses heteromorphic sex chromosomes and is regarded as primitive, based on several criteria. These karyotype data on the albitarsis complex reinforce the hypothesis that sex chromosome evolution in the subfamily Anophelinae is conserved, and the variation revealed in the mean size of chromosomes in three populations indicates that selective pressure in these populations is occurring only at a genetic level. 2020-05-07T14:00:34Z 2020-05-07T14:00:34Z 2005 Artigo https://repositorio.inpa.gov.br/handle/1/15014 https://geneticsmr.com/sites/default/files/articles/year2005/vol4-4/pdf/gmr0184.pdf en Volume 4, Número 4, Pags. 684-690 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Genetics and Molecular Research |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Animals Animals Disease Anopheles Brasil Disease Carrier Female Genetics Human Karyotyping Larva Male Methodology Sex Chromosome Animal Anopheles Brasil Female Humans Insect Vectors Karyotyping Larva Male Sex Chromosomes |
| spellingShingle |
Animals Animals Disease Anopheles Brasil Disease Carrier Female Genetics Human Karyotyping Larva Male Methodology Sex Chromosome Animal Anopheles Brasil Female Humans Insect Vectors Karyotyping Larva Male Sex Chromosomes Rafael, Míriam Silva Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). |
| topic_facet |
Animals Animals Disease Anopheles Brasil Disease Carrier Female Genetics Human Karyotyping Larva Male Methodology Sex Chromosome Animal Anopheles Brasil Female Humans Insect Vectors Karyotyping Larva Male Sex Chromosomes |
| description |
Anopheles (Nyssorhynchus) albitarsis sensu lato is an important malaria vector in Brazil, especially in the Brazilian Amazon region. Chromosome preparations of fourth-instar larvae of A. albitarsis from Iranduba and Coari (AM) and Ilha Comprida (SP) were analyzed for karyotype determination and to improve cytogenetic identification of this species. Anopheles albitarsis possesses 2n = 6 chromosomes, with two pairs (submetacentric and metacentric) of autosomes and one pair of sex chromosomes, with X-Y dimorphism. The sex pair is homomorphic and acrocentric in females and heteromorphic in males, with a punctiform Y chromosome. Somatic pairing was detected in the prometaphase and metaphase chromosomes of the three A. albitarsis populations. Apparently, sex chromosome evolution in the Culicidae does not function as does evolution in the Culicidae, since it occurs in the subfamily Anophelinae, which possesses heteromorphic sex chromosomes and is regarded as primitive, based on several criteria. These karyotype data on the albitarsis complex reinforce the hypothesis that sex chromosome evolution in the subfamily Anophelinae is conserved, and the variation revealed in the mean size of chromosomes in three populations indicates that selective pressure in these populations is occurring only at a genetic level. |
| format |
Artigo |
| author |
Rafael, Míriam Silva |
| author2 |
dos Santos-Junior, Ivanildo Pereira Tadei, Wanderli Pedro Sallum, Maria Anice Mubeb Forattini, Oswaldo Paulo |
| author2Str |
dos Santos-Junior, Ivanildo Pereira Tadei, Wanderli Pedro Sallum, Maria Anice Mubeb Forattini, Oswaldo Paulo |
| title |
Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). |
| title_short |
Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). |
| title_full |
Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). |
| title_fullStr |
Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). |
| title_full_unstemmed |
Karyotype of Brazilian Anopheles albitarsis sensu lato (Diptera:Culicidae). |
| title_sort |
karyotype of brazilian anopheles albitarsis sensu lato (diptera:culicidae). |
| publisher |
Genetics and Molecular Research |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/15014 https://geneticsmr.com/sites/default/files/articles/year2005/vol4-4/pdf/gmr0184.pdf |
| _version_ |
1787141761070530560 |
| score |
11.674752 |