Data/hora: 01/06/2024 08:37:17

Provedor de dados: 	104	
País: 	Brazil	
Título: 	Aspectos reprodutivos de Potimirim glabra (Kingsley) (Crustacea, Decapoda, Atyidae) no Rio Sahy, Mangaratiba, Rio de Janeiro, Brasil	
Autores: 	Lima,Giovana Valverde; Oshiro,Lídia Miyako Yoshii.	
Data: 	2002-09-01	
Ano: 	2002	
Palavras-chave: 	Crustacea; Decapoda; Atyidae; Freshwater shrimp; Potimirim glabra; Reproduction; Sahy River; Rio de Janeiro State.	
Resumo: 	The reproductive aspects of the freshwater shrimp Potimirim glabra (Kingsley, 1878) were studied from September 1997 to February 1999. Monthly, samples were collected with sieves, on the river edge, under the edging vegetation or in small pools. At the laboratory, shrimps were sexed and measured in their total lenght, from the tip of the rostrum to the end of telson with precision callipers. The ovigerous shrimps were separated and counted for fecundity determination. The eggs diameter was measured with calibrated stereomicroscope. A total of 3281 shrimps were collected, among which, 47% male, 46% female (13.4% ovigerous females) and 7% young shrimps. The Sex ratio was 1:1. Ovigerous females were present during all seasons, but the reproductive peak occurred in spring. The ovigerous female showed total lenght from 9.5 to 26.0 mm and carapace lenght from 1.6 to 7.3 mm. The mean fecundity was 545 eggs per female, with a minimun of 223 eggs and a maximum of 860 eggs. The first sexual maturation probably occur at 9.5 mm total lenght. The mean diameter of the eggs size was 0.32 mm (minor) and 0.53 mm (major).	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Português	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300024	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S0101-81752002000300024	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zoologia  v.19 n.3 2002	
Fonte: 	info:eu-repo/semantics/openAccess