Data/hora: 06/06/2024 05:49:30

Provedor de dados: 	104	
País: 	Brazil	
Título: 	Population structure of the lancelet Branchiostoma caribaeum (Cephalochordata: Branchiostomidae) in the Baía de Guanabara, Rio de Janeiro, southeastern Brazil	
Autores: 	Silva,Luis F. B. da; Tavares,Marcos; Soares-Gomes,Abilio.	
Data: 	2008-12-01	
Ano: 	2008	
Palavras-chave: 	Amphioxus; Autoecology; Macrobenthos; Marine invertebrates; Soft-bottoms; Sublittoral.	
Resumo: 	Population structure of the lancelet Branchiostoma caribaeum Sandevall, 1853 was studied in four surveys, corresponding to austral seasons, in a tropical bay, southeast of Brazil. Abundance was higher in the spring and was positively correlated to coarse sediments, limiting its occurrence to some sectors of the sampling area. Body length and biomass differed seasonally but not between sexes. Sexually mature individuals occurred in all seasons, suggesting continuous breeding that is typical of tropical species. Variation in the frequency of small specimens indicates temporal differences in the intensity of breeding. The body length of recruits differed from other population of lancelets and the small length which B. caribaeum attained sexual maturity in Guanabara Bay may be related to local environmental stress or the great availability of food.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000400006	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S0101-81752008000400006	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zoologia  v.25 n.4 2008	
Fonte: 	info:eu-repo/semantics/openAccess