Data/hora: 10/06/2024 15:29:29

Provedor de dados: 	103	
País: 	Brazil	
Título: 	Ontogenesis and functional morphology of the digestive system of the freshwater prawn, Macrobrachium amazonicum (Decapoda: Palaemonidae)	
Autores: 	Queiroz,Luciano D.; Abrunhosa,Fernando A.; Maciel,Cristiana R.	
Data: 	2011-06-01	
Ano: 	2011	
Palavras-chave: 	Foregut; Larval development; Mouthparts; Neotropical species.	
Resumo: 	The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential for successful larval culture. Reports on the development and morphology of the mouthparts and foregut of these crustaceans have aided in the selection of appropriate larval foodstuffs and consequently increased larval survival and growth rate during development. In the present study, the functional morphology of foregut and mouthparts was investigated in larvae and post-larvae of the freshwater prawn M. amazonicum (Heller, 1862). From observations gathered on both the outer and inner feeding apparati the first stage larvae have obligatory lecithotrophy and feeding behaviour is initiated after molting to the second stage. The foregut of the larvae undergoes diverse morphological changes during larval development and the larval foregut of this species is primarily a mixing organ due to the absence of gastric mills and similar structures. After metamorphosis into post-larvae, drastic morphological changes occur in the foregut and mouthparts to adapt the animals to feed on the greater diversity of foods that are available in their new benthic habitat.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300014	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S1984-46702011000300014	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.28 n.3 2011	
Fonte: 	info:eu-repo/semantics/openAccess