Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Morphological Development of Eggs, Larvae and Juveniles of Platycephalus indicus Caught from Yeosu

여수 연안에서 채집한 양태(Platycephalus indicus)의 난발생 및 자치어 형태발달

  • Yun, Ji-Won (Department of Fisheries Sciences, Chonnam National University) ;
  • Han, Kyeong-Ho (Department of Fisheries Sciences, Chonnam National University) ;
  • Yu, Tae-Sik (Fisheries Science Institute, Chonnam National University) ;
  • Lee, Jin (Department of Fisheries Sciences, Chonnam National University) ;
  • Lee, Sung-Hoon (Department of Fishery, Marine, Industry, Tourism, and Leisure, Chonnam National University) ;
  • Park, Jae-Min (Gyeongsangbuk-Do Native Fish Business Center) ;
  • Seo, Ji-Hoon (Department of Fisheries Sciences, Chonnam National University)
  • 윤지원 (전남대학교 수산과학과) ;
  • 한경호 (전남대학교 수산과학과) ;
  • 유태식 (전남대학교 수산과학연구소) ;
  • 이진 (전남대학교 수산과학과) ;
  • 이성훈 (전남대학교 수산해양산업관광레져융합학과) ;
  • 박재민 (경상북도 토속어류산업화센터) ;
  • 서지훈 (전남대학교 수산과학과)
  • Received : 2022.06.10
  • Accepted : 2022.06.24
  • Published : 2022.06.30
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Abstract

The egg, larvae, and juvenile development of Platycephalus indicus sampled from Yeosu estuary were conducted. The egg shape of P. indicus is spherical and transparent on the outside, with two perivitelline cavities inside and one oil globule. The diameter of the fertilized eggs were 1.03~1.12 mm (mean =1.08 mm, n =50). The embryos hatched in about 50 hrs 30 mins after fertilization at the water temperature of 20℃. The newly hatched larvae showed a total length of 2.72~3.04 mm (mean=2.93±0.21 mm, n=50). At 5 days after hatching, they were 3.88~4.42 mm (mean=4.11±0.31 mm, n=15) in TL and their yolk was completely absorbed, developing the teeth. They became juvenile 39 days after hatching and reached 10.23~11.95 mm (mean=11.09±0.86 mm, n=5) in TL. At 45 days after hatching, they were 12.01~13.25 mm (mean=12.63±0.62 mm, n=5) in TL, and their body shape and color were similar to those of adult fish.

여수 연안에서 채집한 양태(Platycephalus indicus)의 난발생과 자치어 형태발달을 연구하였다. 건식법을 통해 인공수정한 수정란은 구형 형태의 분리부성란이었으며, 직경 1.03~1.12 mm (mean =1.08 mm, n =50)였다. 수온 20.0℃에서 50시간 30분 만에 부화하였으며, 전기 자어의 전장은 2.72~3.04 mm (mean =2.93±0.21 mm, n =50)였다. 부화 5일 후 전장 3.88~4.42 mm (mean =4.11±0.31 mm, n =15)였으며, 난황을 모두 흡수하였고, 이빨이 발달하였다. 부화 39일 후 치어기 도달하였으며, 전장은 10.23~11.95 mm (mean =11.09±0.86 mm, n=5)였다. 부화 45일 후 전장은 12.01~13.25 mm (mean=12.63±0.62 mm, n=5)였으며, 체형, 체색이 모두 미성어 시기와 유사하였다.

Keywords

References

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