X chromosome heterochromatic pattern and nucleolar synthesis in pupal ovaries of Aedes aegypti

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorDe Cássia De Sousa, Rita-
Autor(es): dc.creatorDe Campos Bicudo, Hermione Elly Melara-
Data de aceite: dc.date.accessioned2025-08-21T19:16:29Z-
Data de disponibilização: dc.date.available2025-08-21T19:16:29Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued1998-12-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/224397-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/224397-
Descrição: dc.descriptionC-banding and silver-staining techniques were used to examine pupal ovaries of Aedes aegypti from São José do Rio Preto (Brazil). Silver staining in ovary cystocytes showed two basic patterns relative to the nucleolar morphology: viz (1) a single, compact small body; and (2) multiple bodies encompassing large nuclear areas. These two types of cystocytes were present in the ratio of 7:1, which is the same as the number of nurse cells and oocytes, respectively, in each follicle. This suggests the possibility of eventually using such a nucleolar morphological difference to recognize both cell types in developmental stages before emergence. Silver nitrate staining in metaphase chromosomes revealed centromeric bands on all six chromosomes. The C-banding pattern in metaphase chromosomes showed an intercalary band in one of the X arms, as described previously in other populations. In ovary cystocytes (pachytene stage) this C-positive band seemed to consist of two chromomeres. Phase contrast microscopy showed that the nucleolus was associated with the distal chromomere of this intercalary C-band, indicating that the nucleolus organizer region was located in that part of the heterochromatic band.-
Descrição: dc.descriptionDepartamento de Biologia Inst. Biociencias, Letras Cie. E. UNESP, Sao Jose do Rio Preto, SP-
Descrição: dc.descriptionDepartamento de Biologia Inst. Biociencias, Letras Cie. E. UNESP, Sao Jose do Rio Preto, SP-
Formato: dc.format185-193-
Idioma: dc.languageen-
Relação: dc.relationCytobios-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAedes aegypti-
Palavras-chave: dc.subjectHeterochromatic pattern-
Palavras-chave: dc.subjectNucleolar organizer regions-
Palavras-chave: dc.subjectNucleolus-
Título: dc.titleX chromosome heterochromatic pattern and nucleolar synthesis in pupal ovaries of Aedes aegypti-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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