한국어류학회지 (Korean Journal of Ichthyology)

  • 제34권1호
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  • Pages.16-24
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  • 2022
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
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영산강에 서식하는 참중고기 Sarcocheilichthys variegatus wakiyae의 난발생 및 자치어 형태발달

Morphological Development of Eggs, Larvae and Juveniles of the Sarcocheilichthys variegatus wakiyae in Yeongsangang River, Korea

  • 박재민 (경상북도 토속어류산업화센터) ;
  • 한경호 (전남대학교 수산과학과)
  • 투고 : 2022.02.04
  • 심사 : 2022.02.28
  • 발행 : 2022.03.31
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초록

본 연구는 참중고기 Sarcocheilichthys variegatus wakiyae의 난발생 및 자치어 형태발달을 관찰하여 초기생활사 특징을 밝히고 유연종과 난 및 부화자어 크기, 후기자어 및 치어기 이행시기를 비교 논의하고자 실시하였다. 연구에 사용된 친어는 전남 담양군의 영산강 일원에서 채집하였고 호르몬(Ovaprim)을 주사하여 산란을 유도하였다. 산란량은 평균 31±3.5개였고, 성숙란은 원형이었다. 성숙란의 크기는 평균 2.40±0.05 mm였다. 부화시간은 수온 22℃에서 230~240시간이 소요되었다. 부화자어 크기는 평균 10.7±0.19 mm였고, 부화 후 3일 평균 크기 12.0±0.13 mm일 때 척추 끝부분이 45°로 완전히 휘어졌고 후기자어기로 이행하였다. 부화 후 11일째 평균크기 14.6±0.13 mm일 때 모든 지느러미의 기조 수(등지느러미 iii7, 뒷지느러미 iii6, 배지느러미 i7)가 정수에 달하면서 치어기로 이행하였다.

The eggs development and early life history of Sarcocheilichthys variegatus wakiyae was investigated. The adult fishes were collected in Yeongsangang River, Damyang-gun, Jeollanam-do, Korea, and their spawning inducement was carried by sex maturation hormone (Ovaprim) injections. Spawning amount was mean 31±3.5 Mature eggs were cicular in shape and mean 2.40±0.05 mm in diameter. Hatching period of the embryo was 230 to 240 hours after fertilization under water temperature of 22℃. The newly hatched larvae were 10.7±0.19 mm in total length (TL). 3 days after hatching, postlarvae was measured 12.0±0.13 mm in TL and the tip of the caudal fin was bent at 45°. 11 days after hatching, it was measured 14.6±0.13 mm in TL, and transferred to juvenile as the number of fins (iii7 dorsal fin, iii6 anal fin, i7 ventral fins) reached a constant number of each part.

키워드

과제정보

본 연구의 친어확보 및 사진촬영에 도움을 주신 보령민물생태관 조성장 대표님, 한국의 물고기 이건우 매니저님께 감사의 말씀을 드립니다.

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