Data/hora: 11/06/2024 03:42:03

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Utilisation de critères fonctionnels (présence de spermatophore, maturation des ovaires) pour la détermination de la taille et de l'âge à maturité sexuelle des Nephrops norvegicus femelles de la région sud-Bretagne	
Autores: 	Morizur, Yvon.	
Data: 	1983	
Ano: 	1983	
Palavras-chave: 	Brittany; France; ANE; Crustacea; Nephrops norvegicus; Females; Growth; Sexual maturity.	
Resumo: 	The average length at which female Nephrops norvegicus attain their first maturity was determined during 1977 and 1978 by following the presence of spermatophores and development of the ovaries. During 1978, females were sexually mature at the age of 2 but in 1977 they did not mature before the age of 3. The cumulative maturity curves are sigmoid, due to an overlapping of Gaussian curves. A logistic equation was developed to calculate the percentage of mature females at each length. There is no evidence that the present fishing levels reduce the chances of a female with developing ovaries to be fertilized, since 90 to 100% of such females bear spermatophores.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/1983/publication-2349.pdf	
Editor: 	CIEM-Conseil International pour l'Exploitation de la Mer	
Relação: 	http://archimer.ifremer.fr/doc/00000/2349/	
Formato: 	application/pdf	
Fonte: 	Journal du Conseil - Conseil International pour l'Exploration de la Mer (CIEM-Conseil International pour l'Exploitation de la Mer), 1983 , Vol. 41 , P. 28-36	
Fonte: 	1983 CIEM