초록

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1989년(年) 8월(月), 경남(慶南) 진해만(鎭海灣), 자란만(紫蘭灣)에서 채포(採捕)된 성숙한 친어(親魚)를 사용한 수조내(水槽內)에서의 쑤기미의 난발생(卵發生) 및 부화자어(孵化仔魚)의 형태(形態)에 대한 관찰(觀察) 결과(結果)를 요약하면 다음과 같다. 1. 수정난(受精卵)은 직경이 1.2~1.3 mm인 분리부성난(分離浮性卵)으로, 유구(油球)가 없다. 수온(水溫) $24.9{\sim}26.5^{\circ}C$에서 E+26~29시간만에 부화하였다. 2. 부화직후(孵化直後) 자어(仔魚)는 전장(全長)이 2.47~3.10 mm였으며, 입과 항문(肛門)이 열리지 않으며, 몸 전체에 황색소포(黃色素胞)가 산재하여 있고, 난황(卵黃)을 위로하여 떠있다. 근절수(筋節數)는 13+16~17=29~30개였다. 3. 부화(孵化) 후(後) 2일째 전장(全長) 3.61~4.16 mm의 자어(仔魚)는 가슴지느러미가 부채형으로 크게 발달하여, 그 위에 3~4개의 커다란 흑색반점(黑色斑點)이 나타났다. 4. 부화(孵化) 3일째 전장(全長) 3.97~4.29 mm의 자어(仔魚)는 난황(卵黃)을 완전히 흡수하였으며, 가슴지느러미 줄기가 4~5개 발달하였다. 5. 부화(孵化) 6일째 자어(仔魚)는 전장(全長)이 4.07~5.46 mm 범위이며, 가슴지느러미에 11개의 줄기가 발달하였고, 흑색반점(黑色斑點)은 줄기끝부분에서 8~9개로 증가하였다.

Abstract ▼ AI-Helper

In August, 1988, matured adults of devil stinger were collected from Jinhae Bay and Jaran Bay, Kyongsangnam-do, Korea and kept in the aquarium (1 ton) for spawning. The egg development was observed with the eggs laid in the aquarium of adult fish. The diameters of eggs ranged from 1.2 to 1.3 mm (n=6...

In August, 1988, matured adults of devil stinger were collected from Jinhae Bay and Jaran Bay, Kyongsangnam-do, Korea and kept in the aquarium (1 ton) for spawning. The egg development was observed with the eggs laid in the aquarium of adult fish. The diameters of eggs ranged from 1.2 to 1.3 mm (n=6), and no oil globules were found in the eggs. The hatching took place from 26 to 29 hours after eight cells stage at the water temperature of $24.9-26.5^{\circ}C$. The newly hatched larvae were 2.47~3.10 mm in total length with xanthophore on the body and yolk sac. Myomere number was 13+16-17=29-30. Two days after hatching, larvae were 3.61-4.16 mm in total length, and 3 to 4 large spots of melanophore appeared on the large pectoral fin. Three days after hatching, larvae were 3.97-4.29 mm in total length, and the larvae absorved the yolk material completely to become post larvae with 4-5 rays of the pectoral fin. Six days after hatching, larvae attained 4.07-5.46 mm in total length, and 11 rays and 8-9 spots of melanophore were developed on the pectoral fin.