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http://dx.doi.org/10.35399/ISK.34.2.3

Morphological Development of Eggs, Larvae and Juveniles of Platycephalus indicus Caught from Yeosu  

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)
Publication Information
Korean Journal of Ichthyology / v.34, no.2, 2022 , pp. 96-101 More about this Journal
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.
Keywords
Platycephalus indicus; egg development; early life history; juvenile; larvae;
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