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vol.49 issue3-4Abundancia y tallas de Menippe mercenaria (Crustacea: Brachyura), en refugios artificiales en Quintana Roo, MéxicoEffect of different densities of live and dead Chlorella vulgaris on the population growth of rotifers Brachionus calyciflorus and Brachionus patulus (Rotifera) author indexsubject indexarticles search
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Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744


CABRERA PENA, Jorge et al. Tallas y fecundidad de Juxtafabia muliniarum (Brachyura: Pinnotheridae) asociado con Saccostrea palmula (Bivalvia: Ostreidae), Costa Rica. Rev. biol. trop [online]. 2001, vol.49, n.3-4, pp.889-894. ISSN 0034-7744.

Size and fecundity observations of pea crab (Juxtafabia muliniarum) from the paleal cavity of!he oyster Saccostrea palmula were made from May 1998 to May 1999. Infestation frequency was 18.52 % in a sample of 540 oysters. Of 136 pea crabs, 36 % were couples, 60 % were single females and 4 % were single males. The mean caparace length of J. muliniarum was 5.6 + 0.74 mm (range 4.0 to 7.6 mm) for females and 2.7 + 0.60 mm (range 1.6 to 4.0 mm) for males. The mean weight was 0.180 + 0.084 g (range 0.06 to 0.4g) for females and 0.011 + 0.003 g (range 0.01 to 0.02 g) for males. Ovigerous females (43.75 % of all females) were found in all months. The caparace length - fecundity relationship was F = 3904.6 Ln (Lc) -4651.1. The caparace length-weight relationship was P = 6 X 10-4 Lc3.2122. The mean sex-ratio was 1.0 male: 2.4 females. Saccostrea palmula infected only by females was the dominant group (60.78 %). This mollusk is a new host record for the crab

Keywords : Juxtafabia muliniarum; feeundity; pea crab; size; Saccostrea palmula; sex ratio.

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