Data/hora: 17/06/2024 11:51:41

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	30/05/2011	
Data da última atualização: 	26/09/2023	
Autoria: 	ROCHA, M. de F.; MELO, N. F. de; SOUZA, M. J. de.	
Afiliação: 	MARÍLIA DE FRANÇA ROCHA, UPE; NATONIEL FRANKLIN DE MELO, CPATSA; MARIA JOSÉ DE SOUZA, UFPE.	
Título: 	Comparative cytogenetic analysis of two grasshopper species of the tribe Abracrini (Ommatolampinae, Acrididae).	
Ano de publicação: 	2011	
Fonte/Imprenta: 	Genetics and Molecular Biology, Ribeirão Preto, v. 34, n. 2, p. 214-219, 2011.	
Idioma: 	Inglês	
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.	
Palavras-Chave: 	Análise citogenética; Fluorocromos; Heterocromatina constitutiva.	
Thesagro: 	DNA; Gafanhoto.	
Thesaurus Nal: 	Orthoptera.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/35549/1/Natoniel-2011.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (44736-1) - UPC - AP - DD -  -  -  - DIS