Development and Reproduction (한국발생생물학회지:발생과생식)

The Korean Society of Developmental Biology (한국발생생물학회)
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Egg Development and Morphology of Larva and Juvenile of the Oryzias latipes

  • Lee, Sung-Hun (Aquaculture Program, College of Fisheries and Ocean Sciences, Chonnam National University) ;
  • Kim, Chun-Cheol (Inland Fisheries Research Laboratory, Jeollanamdo Provincial Government) ;
  • Koh, Soo-Jin (Aquaculture Program, College of Fisheries and Ocean Sciences, Chonnam National University) ;
  • Shin, Lim-Soo (Aquaculture Program, College of Fisheries and Ocean Sciences, Chonnam National University) ;
  • Cho, Jae-Kwon (Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Han, Kyeong-Ho (Aquaculture Program, College of Fisheries and Ocean Sciences, Chonnam National University)
  • Received : 2014.08.14
  • Accepted : 2014.08.29
  • Published : 2014.09.30
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Abstract

In order to monitor the developmental features of embryos, larvae, and juveniles of Oryzias latipes (Temminck and Schlegel), Oryzias latipes was caught in river of Shinduck-dong, Yeosu-si, Jeollanam-do, on May 2011, and experiments were carried out in Ichthyology laboratory at Chonnam National University. The blastodisc step was the first level for natural spawning. The optic vesicle, Kupffer's vesicle, myotome began to appear 75 hours 57 minutes later. After blastodisc development, the pectoral fins were made at 143 hours 37 minutes and the tail was separated started at the same time. Hatching was observed at 167 hours 27 minutes after blastodisc. The total length of the hatched larvae was 4.95~5.10 mm (mean, 5.01 mm), the mouth and anus were opened. Larvae used yolk completely after 3 days after hatching. The total length larvae was 5.45~5.56 mm (mean, 5.52 mm) after 8 days after hatching, and appeared the stems for tail. The stems pectoral, anal fin were showed after 14 days and the stems dorsal, ventral fin were appeared after 19 days. For 35 days after hatching, the total length of larvae 13.95~15.30 mm (mean, 14.64 mm), and at this time, fins and body were transferred like the adult Oryzias latipes.

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References

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