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Desenvolvimento juvenil de Cyrtograpsus angulatus Dana (Crustacea, Decapoda, Grapsidae), em laboratório

Juvenile development of Cyrtograpsus angulatus Dana (Crustacea, Decapoda, Grapsidae), in laboratory

Resumo

This paper describes the first nine juvenile stages of Cyrtograpsus angulatus Dana, 1851 obtained in laboratory conditions from three ovigerous females collected at "Molhes da Barra", Rio Grande, Brazil (32ºS and 52ºW). The main morphological features, the secondary sexual characters and the gills ontogeny were observed. Twenty one individuals reached until the ninth juvenile stage. Sexual dimorphism can be verified from the fourth juvenile stage and the number of gills are complete at the second juvenile stage.

Crustacea; Brachyura; Grapsidae; development; juvenile


Crustacea; Brachyura; Grapsidae; development; juvenile

Desenvolvimento juvenil de Cyrtograpsus angulatus Dana (Crustacea, Decapoda, Grapsidae), em laboratório

Juvenile development of Cyrtograpsus angulatus Dana (Crustacea, Decapoda, Grapsidae), in laboratory

Paulo Juarez RiegerI; Roberta BeltrãoII

ILaboratório de Zoologia de Crustácea Decapoda, Departamento de Ciências Morfológicas e Biológicas, Fundação Uniersidade do Rio Grande. Caixa Postal 474, 96201-900 Rio Grande, Rio Grande do Sul, Brasil. E-Mail: dmbpjr@super.furg.br

IIBolsista de Iniciação Científica (FAPERGS). E-Mail: rbeltrao@yahoo.com

ABSTRACT

This paper describes the first nine juvenile stages of Cyrtograpsus angulatus Dana, 1851 obtained in laboratory conditions from three ovigerous females collected at "Molhes da Barra", Rio Grande, Brazil (32ºS and 52ºW). The main morphological features, the secondary sexual characters and the gills ontogeny were observed. Twenty one individuals reached until the ninth juvenile stage. Sexual dimorphism can be verified from the fourth juvenile stage and the number of gills are complete at the second juvenile stage.

Key words: Crustacea, Brachyura, Grapsidae, development, juvenile.

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AGRADECIMENTOS. Os autores agradecem o subsídio oferecido pela FAPERGS através do processo Nº 95/51017.5 e às pessoas envolvidas direta ou indiretamente no trabalho, em especial a Sandro Klippel pelo apoio e sugestões.

Recebido em 22.I.1999; aceito em 18.IV.2000.

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Datas de Publicação

  • Publicação nesta coleção
    12 Maio 2009
  • Data do Fascículo
    Jun 2000

Histórico

  • Aceito
    18 Abr 2000
  • Recebido
    22 Jan 1999
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