Data/hora: 01/06/2024 11:37:43

Provedor de dados: 	103	
País: 	Brazil	
Título: 	Larval and adult density of the porcellanid crab Petrolisthes armatus (Anomura: Porcellanidae) in an Amazon estuary, northern Brazil	
Autores: 	Oliveira,Danielly Brito de; Silva,Dalila Costa; Martinelli-Lemos,Jussara Moretto.	
Data: 	2013-12-01	
Ano: 	2013	
Palavras-chave: 	Decapoda; Macrobenthos; Reproduction; Zooplankton.	
Resumo: 	Petrolisthes armatus (Gibbes, 1850) is a porcellanid crab with a wide geographical distribution. In the present study we analyzed variations in the abundance of P. armatus adults and larvae over an annual cycle in the Marapanim estuary of the Amazon coastal zone, in the northeastern portion of the state of Pará, Brazil. Particularly, we focused on the presence of ovigerous females and timing of larval release, with the aim of elucidating reproductive patterns in a tropical estuarine system. The mean density of P. armatus larvae (zoea I and II) correlated positively with the salinity of the shallow waters of the estuary, whereas the abundance of adults correlated with the salinity registered in water samples collected from the benthic environment. There was also a significant positive correlation between larval density (zoea I and II) and water temperature. Ovigerous females were captured throughout the study period, from August 2006 to July 2007, but were more abundant in June and less abundant during the rainy months, between February and May. Larvae were only present during the dry season and transition months (June to January), and were absent during the rainy season (February to May). Petrolisthes armatus reproduces throughout the year in the Marapanim estuary and all developmental stages of this species (zoeal stages I and II, megalopae and adults) are found in the estuary. The results indicate that the study area is an important environment for the reproduction of this decapod.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000600002	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S1984-46702013005000002	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.30 n.6 2013	
Fonte: 	info:eu-repo/semantics/openAccess