Egg development and incubation period of the swimming crab Portunus trituberculatus (Decapoda: Portunidae) reared in the laboratory

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概要

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• This study dealt with the egg development and incubation period of the swimming crab Portunus trituberculatus reared in the laboratory. Egg volume increased twice throughout development and the rate of increment was higher after the metanaupliar stage. Two embryonic growth indices which were expressed as respective relative areas of embryonic body and eye pigment in lateral profiles of the egg increased as the relative egg age advanced. Newly hatched larvae body size correlated with egg size. Smallersized larvae tended to be produced at higher egg incubation temperatures. The number of days from spawning to hatching decreased with increasing incubation temperature and the Belehradek's equation was the best non-linear regression model to describe the relationship between temperature and egg incubation period.

著者

• Fukunaga Kyohei

  Akkeshi Station Ncse

• Hamasaki Katsuyuki

  Yaeyama Station, National Center for Stock Enhancement (NCSE)

• Maruyama Keigo

  Miyako Station, NCSE

• Hamasaki Katsuyuki

  Yaeyama Station National Center For Stock Enhancement (ncse)

• Maruyama Keigo

  Miyako Station Ncse

関連論文

• Egg development and incubation period of the swimming crab Portunus trituberculatus (Decapoda: Portunidae) reared in the laboratory
• Effect of Artemia feeding schedule and density on the survival and development of larval mud crab Scylla serrata
• Mass mortality during metamorphosis to megalops in the seed production of mud crab Scylla serrata (Crustacea, Decapoda, Portunidae)
• Effects of Artemia enriched with eicosapentaenoic and docosahexaenoic acid on survival and occurrence of molting failure in megalop larvae of the mud crab Scylla serrata

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