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KMID : 0894520080120020133
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Development & Reproduction
2008 Volume.12 No. 2 p.133 ~ p.139
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Embryonic and Larva Development of Nake-Headed Goby, Luciogobius grandis
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Yun Seong-Min
Han Kyeong-Ho
Lee Sung-Hun
Yim Hu-Soon
Hwang Jae-Ho
Yeon In-Ho
Kim Yi-Cheong
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Abstract
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The eggs of Luciogobius grandis attached beneath the small stone were collected at Ocheon-dong, Yeosu-city from February to May, 2006. We carried them to the laboratory of Chonnam National University to investigate their development. The fertilized eggs were elliptical in shape (mean long axis: 2.06±0.23 ㎜; mean short axis: 0.74±0.04 ㎜) and transparent. There were filaments on the egg membrane. Their hatching was occurred at 120hrs 54mins after the morula stage at 18.4~21.0℃ (mean 19.4℃). The newly hatched larvae were 3.30±0.07 ㎜ (n＝30) in total length (TL), with 34~36 myotomes, and their mouth and auns were already open. Their melanophores were appeared over the gas globule, around the anus and a part of caudal peduncle. At 9 days after hatching, the larvae was 5.06±0.18 ㎜ (n＝30) in TL and transformed to postlarval stage with yolk absorption. At 29 days after hatching, the larvae attained full fin ray count and reached the juvenile stage with 11.46±0.12 ㎜ (n＝30) in TL.
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KEYWORD
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Luciogobius grandis, Egg, Larva, Juvenile, Hatching
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