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Zoeal morphology of Pachygrapsus transversus (Gibbes) (Decapoda, Grapsidae) reared in the laboratory

Abstract

Ovigerous females of Pachygrapsus transversus (Gibbes, 1850) were collected on the Praia Dura and Saco da Ribeira beaches, Ubatuba, São Paulo, Brazil. Larvae were individually reared in a climatic room at 25ºC temperature, salinities of 28, 32 and 35‰ and under natural photoperiod conditions. The best rearing results were observed at 35%o salinity. Seven zoeal instars were observed, drawing and described in detail. The data are compared with those obtained for P. gracilis (Saussure, 1858).

Grapsidae; Pachygrapsus Iransversus; larval development; decapod


Zoeal morphology of Pachygrapsus transversus (Gibbes) (Decapoda, Grapsidae) reared in the laboratory

Ana Luiza Brossi-GarciaI; Misael Domingues RodriguesII

IDepartamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista. Caixa Postal 199, 13506-900 Rio Claro, São Paulo, Brasil. E-mail: bgarcia@cparetianas.com.br

IIDepartamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina. Caixa Postal 6001, 86051-990 Londrina, Brasil. E-mail: misael@npd.uel.br

ABSTRACT

Ovigerous females of Pachygrapsus transversus (Gibbes, 1850) were collected on the Praia Dura and Saco da Ribeira beaches, Ubatuba, São Paulo, Brazil. Larvae were individually reared in a climatic room at 25ºC temperature, salinities of 28, 32 and 35‰ and under natural photoperiod conditions. The best rearing results were observed at 35%o salinity. Seven zoeal instars were observed, drawing and described in detail. The data are compared with those obtained for P. gracilis (Saussure, 1858).

Key words: Grapsidae, Pachygrapsus Iransversus, larval development, decapod

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ACKNOWLEDGEMENT. This work was supported by a research grant from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).

Recebido em 07.XI.1996; aceito em 18.IX.1997.

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Publication Dates

  • Publication in this collection
    16 July 2009
  • Date of issue
    Dec 1997

History

  • Accepted
    18 Sept 1997
  • Received
    07 Nov 1996
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