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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
30/05/2011 |
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Data da última atualização: |
26/09/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ROCHA, M. de F.; MELO, N. F. de; SOUZA, M. J. de. |
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Afiliação: |
MARÍLIA DE FRANÇA ROCHA, UPE; NATONIEL FRANKLIN DE MELO, CPATSA; MARIA JOSÉ DE SOUZA, UFPE. |
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Título: |
Comparative cytogenetic analysis of two grasshopper species of the tribe Abracrini (Ommatolampinae, Acrididae). |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirão Preto, v. 34, n. 2, p. 214-219, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
The grasshopper species Orthoscapheus rufipes and Eujivarus fusiformis were analyzed using several cytogenetic techniques. The karyotype of O. rufipes, described here for the first time, had a diploid number of 2n = 23, whereasE. fusiformis had a karyotype with 2n = 21. The two species showed the same mechanism of sex determination (XO type) but differed in chromosome morphology. Pericentromeric blocks of constitutive heterochromatin (CH) were de- tected in the chromosome complement of both species. CMA3 /DA/DAPI staining revealed CMA3 -positive blocks in CH regions in four autosomal bivalents of O. rufipes and in two of E. fusiformis. The location of active NORs differed between the two species, occurring in bivalents M6 and S9 of O. rufipes and M6 and M7 of E. fusiformsi. The rDNA sites revealed by FISH coincided with the number and position of the active NORs detected by AgNO 3 staining. The vari- ability in chromosomal markers accounted for the karyotype differentiation observed in the tribe Abracrini. |
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Palavras-Chave: |
Análise citogenética; Fluorocromos; Heterocromatina constitutiva. |
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Thesagro: |
DNA; Gafanhoto. |
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Thesaurus Nal: |
Orthoptera. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/35549/1/Natoniel-2011.pdf
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Marc: |
LEADER 01709naa a2200217 a 4500
001 1889967
005 2023-09-26
008 2011 bl uuuu u00u1 u #d
100 1 $aROCHA, M. de F.
245 $aComparative cytogenetic analysis of two grasshopper species of the tribe Abracrini (Ommatolampinae, Acrididae).$h[electronic resource]
260 $c2011
520 $aThe grasshopper species Orthoscapheus rufipes and Eujivarus fusiformis were analyzed using several cytogenetic techniques. The karyotype of O. rufipes, described here for the first time, had a diploid number of 2n = 23, whereasE. fusiformis had a karyotype with 2n = 21. The two species showed the same mechanism of sex determination (XO type) but differed in chromosome morphology. Pericentromeric blocks of constitutive heterochromatin (CH) were de- tected in the chromosome complement of both species. CMA3 /DA/DAPI staining revealed CMA3 -positive blocks in CH regions in four autosomal bivalents of O. rufipes and in two of E. fusiformis. The location of active NORs differed between the two species, occurring in bivalents M6 and S9 of O. rufipes and M6 and M7 of E. fusiformsi. The rDNA sites revealed by FISH coincided with the number and position of the active NORs detected by AgNO 3 staining. The vari- ability in chromosomal markers accounted for the karyotype differentiation observed in the tribe Abracrini.
650 $aOrthoptera
650 $aDNA
650 $aGafanhoto
653 $aAnálise citogenética
653 $aFluorocromos
653 $aHeterocromatina constitutiva
700 1 $aMELO, N. F. de
700 1 $aSOUZA, M. J. de
773 $tGenetics and Molecular Biology, Ribeirão Preto$gv. 34, n. 2, p. 214-219, 2011.
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Embrapa Semiárido (CPATSA) |
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