Data/hora: 11/06/2024 11:14:20

Provedor de dados: 	104	
País: 	Brazil	
Título: 	Aspectos gametogênicos e histoquímicos de Iphigenia brasiliana (Lamarck) (Bivalvia, Donacidae) da Lagoa de Itaipu, Niterói, Rio de Janeiro, Brasil	
Autores: 	Mesquita,Eliana de Fátima Marques de; Abreu,Marta Guimarães de; Lima,Francisco Carlos de.	
Data: 	2001-06-01	
Ano: 	2001	
Palavras-chave: 	Gametogenic cycle; Histology; Special-staining methods; Iphigenia brasiliana; Ltaipu Lagoon; Brazil.	
Resumo: 	Gametogenic and histochemical aspects of an edible bivalve, lphigenia brasiliana (Lamarek, 1818) from Itaipu Lagoon, Niterói, State of Rio de Janeiro, were studied. Between May 1998 and October 1999 a total of 120 clams were picked up. Samples of 10 animals were collected once a month. Specimens were fixed in Bouin's fixative for 4 hours or less and transferred to 10% formalin for 24 hours. The shell lenght has been measured with the valves lightly opened to permit the penetration of fixative solution deeply in the tissues. Transverse sections including digestive diverticula, mantle, gills, gonad and foot were obtained from the total body. After fixative treatment, tissues sections were embedded in paraffin, cut routinely at 5 µm and stained with Harris's hematoxylin and eosin. Microscopic analysis was carried out at low and high dry magnifications, as well as under oil immersion. Advanced ova stages were measured. Special staining techniques have been applied as a tentative tool for searching glycogen, mucous cells, collagenic and reticulin fibers, RNA and protozoan organisms. The animals collected showed variation in lenght from 7.20 cm to 4.10 cm and in height from 4.60 cm to 3.10 cm. The sex ratio (M:F) was 40:69. The average ova diameter of I. brasiliana was 34.70 µm with a standard deviation of 5.19 µm. Nothing could be observed in I. brasiliana, concerning to lesions and parasites at histopathological analysis.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Português	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200023	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S0101-81752001000200023	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zoologia  v.18 n.2 2001	
Fonte: 	info:eu-repo/semantics/openAccess