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
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Publication in this collection
16 July 2009 -
Date of issue
Dec 1997
History
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Accepted
18 Sept 1997 -
Received
07 Nov 1996