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KMID : 0894520080120030283
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Development & Reproduction
2008 Volume.12 No. 3 p.283 ~ p.288
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Embryonic and Larval Development of Goby Minnow, Pseudogobio esocinus
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Lee Sung-Hoon
Oh Gwang-Nam
Kim Kwan-Seok
Oh Yong-Seok
Kang Kyeong-Wan
Hwang Jae-Ho
Lee Bae-Ik
Lee Won-Kyo
Han Kyeong-Ho
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Abstract
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The Pseudogobio esocinus were caught at Wyuleo-ri, Gyeombaek-myeon, Boseong-gun, Jeollanamdo from April to May 2003. The fishes were incubated in transparent aquarium located at the laboratory of Chonnam National University, and their embryonic and larval development were observed. The fertilized eggs were spherical, semitransparent, and adhesive, and were 1.98±0.19 ㎜ (n=50) in diameter. The embryo, including 31～32 myotomes, hatched through egg membrane at 164 hrs after fertilization. The newly-hatched larvae were 4.61±0.83 ㎜ (n=10) in total length (TL). At that moment, yolk was not absorbed, and mouth and anus were not open. Star and spot shaped melanophores were distributed on the lens, and dorsal, ventral, and caudal parts. At 42 days after hatching, larva was 16.22±0.65 ㎜ (n=10) in TL. Melanophores were scaterred at head, back, and side parts. Morphological features of the embryo were transferred to juvenile stage showing similar features with those of the adult fish.
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KEYWORD
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Pseudogobio esocinus, Early life history, Egg, Larva, Juvenile
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