Complete Larval Development of Hemigrapsus sanguineus(Decapoda, Brachyura, Grapsidae) Reared in Laboratory

무늬발개 Hemigrapsus sanguineus(게 아목, 바위게 과)의 유생발생

  • Hwang, Sang-Gu (Department of Biology, Pusan National University) ;
  • Lee, Chu (Department of Biology, Pusan National University) ;
  • Kim, Chang-Hyun (Department of Biology, Pusan National University)
  • 황상구 (부산대학교 자연과학대학 생물학과) ;
  • 이주 (부산대학교 자연과학대학 생물학과) ;
  • 김창현 (부산대학교 자연과학대학 생물학과)
  • Published : 1993.12.01

Abstract

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^{\circ}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 ~ h i c h 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.