Complete larval development of Hemigrapsus sanguineus (Decapoda, Brachyura, Grapsidae) reared in the laboratory

Hwang, S.G.; Lee, C.; Kim, C.H.un.

Korean Journal of Systematic Zoology 92: 69-86


Accession: 020759625

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The larval stages of Hemigrapsus sanguineus were reared in the laboratory and described with illustrative figures. Five zoeal and one megalopal stages were found in the complete larval development. At 25 degree C, the megalopa and the first crab instar were attained in 18 and 31 days after hatching, respectively. The first zoeal larva of H. sanguineus showed the characteristics which coincide with those of the same genus by bearing lateral spines on carapace, B-types of telson and antenna, 1+5 setae on the endopod of maxillule, and 2+2 setae on the endopod of maxilla. Morphological features of H. sanguineus larvae were compared to the previous descriptions of larvae of the same genus and morphological differences among them were discussed.