지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
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The spawning behavior and early life history of the Korean aucha perch, Coreoperca herzi were studied.
The eggs were spawned in a one-layer mass, hanging from the underside of a largy stone and guarded by one male. According to the considerable size differences of eggs in the individual ovaries, it was concluded that they spawns several times within a spawning season of May~June. The ripe eggs were demersal and adhesive, and their diameter were 2.60~3.04㎜ with several oil globule of 0.10~0.64㎜.
Hatching in the tank with 19.0±1.0℃ in mean water temperature started from the 380 hours after fertilization.
Newly-hatched larvae were measured 6.45~7.34㎜ in total length (TL, mean : 6.85㎜), and mouth and anus were open. Melanophores were present on the head, around the yolk, and on the dorsal part of the abdominal region.
3 days old larvae were measured 7.00~7.40㎜ in TL (mean : 7.25㎜), and they fed Daphnia sp. and Brachionus plicatilis actively.
6 days old larvae transformed to postlarval stage and they were 7.94~10.10㎜ in TL (mean : 9.00mm). As yolk sac were nearly absorbed, the caudal notochord flex at 45.
Aggregate numbers of all fin rays were completed at over 16.90~19.80㎜ in TL(30 days after hatching), at which time the larvae reached the juvenile stage.
In fifty days old larvae (24.60~27.10㎜ in TL) were similar in body form, lateral line and color to adult.
The eggs were spawned in a one-layer mass, hanging from the underside of a largy stone and guarded by one male. According to the considerable size differences of eggs in the individual ovaries, it was concluded that they spawns several times within a spawning season of May~June. The ripe eggs were demersal and adhesive, and their diameter were 2.60~3.04㎜ with several oil globule of 0.10~0.64㎜.
Hatching in the tank with 19.0±1.0℃ in mean water temperature started from the 380 hours after fertilization.
Newly-hatched larvae were measured 6.45~7.34㎜ in total length (TL, mean : 6.85㎜), and mouth and anus were open. Melanophores were present on the head, around the yolk, and on the dorsal part of the abdominal region.
3 days old larvae were measured 7.00~7.40㎜ in TL (mean : 7.25㎜), and they fed Daphnia sp. and Brachionus plicatilis actively.
6 days old larvae transformed to postlarval stage and they were 7.94~10.10㎜ in TL (mean : 9.00mm). As yolk sac were nearly absorbed, the caudal notochord flex at 45.
Aggregate numbers of all fin rays were completed at over 16.90~19.80㎜ in TL(30 days after hatching), at which time the larvae reached the juvenile stage.
In fifty days old larvae (24.60~27.10㎜ in TL) were similar in body form, lateral line and color to adult.
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