Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Induction of Tetraploid Cyprinid Loach, Misgurnus anguillicaudatus

4 배체 미꾸리(Misgurnus anguillicaudatus)의 유도

  • KIM Dong Soo (Department of Aquaculture, National Fisheries University of Pusan) ;
  • NOH Choong Hwan (Department of Aquaculture, National Fisheries University of Pusan) ;
  • NAM Yoon Kwan (Department of Aquaculture, National Fisheries University of Pusan)
  • Published : 1993.02.01
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Abstract

A tetraploid cyprinid loach, Misgurnus anguillicaudatus was induced by applying heat shock. The efficiency of inductions changed with the time of initiation of treatment and the duration of treatment. The highest incidence of tetraploid was obtained at the treatment of $41^{\circ}C$ for 3 min, 28 min after fertilization. Ploidy level was estimated by kariological examination and flow cytometric analysis. The tetraploid cyprinid loach had 4n = 100 chromosomes, while the diploid had 2n = 50. The erythrocytic volume of the tetraploid was 1.65 times larger than that of the diploid. The DNA content of the tetraploid and diploid showed 6.547 pg/cell and 3.067 pg/cell, respectively.

4 배체 미꾸리를 생산하기 위해 수정란에 여러 범위 의 자극 온도와 수정 후로부터 의 경과시간, 그리고 처리 시간에 따라 그 효율을 조사하였다. 4배체 생산에 가장효율이 좋은 조건은 수정 후 28분에 3분간 온도 $41^{\circ}C$에 처리하는 것으로 나타났고, 정상 2배체의 염색체 수가 2n=50으로 나타난 반면 4배체의 염색체 수는 4n=100으로 확인 되었다. 또한 4배체의 적혈구의 용적은 2배체 보다 1.65배나 더 컸으며 4배체와 2배체의 DNA 함량은 각각 6.547 및 3.067pg/cell로 나타났다.

Keywords