Scientia Marina, Vol 64, No 1 (2000)

Larval development of Cyrtograpsus affinis (Dana) (Decapoda, Brachyura, Varunidae) from Río de la Plata estuary, reared in the laboratory


https://doi.org/10.3989/scimar.2000.64n129

Eduardo D. Spivak
Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Argentina

José A. Cuesta
Instituto de Ciencias Marinas de Andalucía (CSIC), Spain

Abstract


The complete larval development of the crab Cyrtograpsus affinis (Brachyura, Varunidae) was obtained by culture in the laboratory. Five zoeal stages, the megalopa and the first crab are described and illustrated. Larval development from hatching to first crab took 29 days at 20° C and 35 PSU. The genus Cyrtograpsus only consists of three species. Larval development of C. altimanus and C. angulatus had been described previously. In the present study, morphological larval characters of the three species are compared. Generic larval features are also compared with those of other Varunidae genera.

Keywords


Cyrtograpsus affinis; larval development; zoea; megalopa; Grapsoidea; Varunidae

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