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Park JM, Yim HS, Lee YS, et al. Egg Development of the Ussurian Bullhead Fish, Leiocassis ussuriensis (Pisces: Bagridae) and Morphological Development of Its Larvae and Juveniles. Dev Reprod. 2015;19(4):189-96doi: 10.12717/DR.2015.19.4.189.
Park, J. M., Yim, H. S., Lee, Y. S., Kim, H. Y., & Han, K. H. (2015). Egg Development of the Ussurian Bullhead Fish, Leiocassis ussuriensis (Pisces: Bagridae) and Morphological Development of Its Larvae and Juveniles. Development & reproduction, 19(4), 189-96. https://doi.org/10.12717/DR.2015.19.4.189
Park, Jae-Min, et al. "Egg Development of the Ussurian Bullhead Fish, Leiocassis ussuriensis (Pisces: Bagridae) and Morphological Development of Its Larvae and Juveniles." Development & reproduction vol. 19,4 (2015): 189-96. doi: https://doi.org/10.12717/DR.2015.19.4.189
Park JM, Yim HS, Lee YS, Kim HY, Han KH. Egg Development of the Ussurian Bullhead Fish, Leiocassis ussuriensis (Pisces: Bagridae) and Morphological Development of Its Larvae and Juveniles. Dev Reprod. 2015 Dec;19(4):189-96. doi: 10.12717/DR.2015.19.4.189. PMID: 26973970; PMCID: PMC4786480.
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Dev Reprod. 2015 Dec;19(4):189-96. doi: 10.12717/DR.2015.19.4.189.

Egg Development of the Ussurian Bullhead Fish, Leiocassis ussuriensis (Pisces: Bagridae) and Morphological Development of Its Larvae and Juveniles.

Development & reproduction

Jae-Min Park, Hu-Sun Yim, Yong-Sik Lee, Heung-Yun Kim, Kyeong-Ho Han

Affiliations

  1. Gyeongsangbuk-do Native Fish Business Center, Uiseong 37366, Korea.
  2. Dept. of Aqualife Science, Chonnam National University, Yeosu 59626, Korea.
  3. Dept. of Aqualife Medicine, Chonnam National University, Yeosu 59626, Korea.

PMID: 26973970 PMCID: PMC4786480 DOI: 10.12717/DR.2015.19.4.189

Abstract

This study was examined the ovogenesis of Ussurian bullhead, Leiocassis ussuriensis and the morphological development of its larvae and juveniles and to use the results as basic information for the preservation of species and resource enhancement. For artificial egg collection, human chorionic gonadotropin (HCG) was injected at a rate of 10 IU per gram of fish weight. During breeding period, water temperature maintained at 24.5~26.5°C (mean 25.0±0.05°C). The process of ovogenesis reached the two-cell stage in 50 minutes after fertilization. In 73 hours of fertilization the movement of the embryoid body became active state and the larvae began to hatch from the tail through the oolemma. Length of prelarvae were 6.33~6.50 mm long (mean 6.40±0.06 mm) just after hatching having yolk with their mouth not opened. After thirty eight days of hatching, juveniles were 30.6∼32.5 mm long (mean 31.5±0.65 mm). The color was dark yellowish brown throughout the entire body, and the number of caudal fin rays developed to thirty six perfectly.

Keywords: Egg development; Juvenile; Larvae; Leiocassis ussuriensis

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