Gold Storage and Cryopreservation of Grey Mullet(Mugil cephalus) Sperm

숭어(Mugil cephalus) 정자의 냉장.냉동보존

  • Published : 1999.03.01

Abstract

Experiments were performed to study the activity and fertility of grey mullet (Mugil cephalus) sperm after the courses of cold storage and cryopreservation. The head of spermatozoon showing spherical shape was sized $1.26{\pm}0.08 \{mu}textrm{m}$ in diameter and its nucleus contained numerous granular chromatins. Flagellum of tail showed typical 9+2 structure. Preservation of grey mullet sperm was the most effective when it was stored with serum of the same species at $0^{\circ}C$ and sperm activity index was similar in egg-tris, 0.1 M, 0.3 M and 0.5 M glucose. When grey mullet sperm were cryopreserved in MFRS as diluent with 10% dimethyl sulfoxide was effective compared with other diluents. Some of post-thawed spermatozoa showed the enlarged head and ruptured plasma membrane compared with unfrozen spermatozoa.

숭어 정액의 냉장 및 냉동보존시 적합한 희석액을 선정하고, 알에 대한 수정률을 평가하였다. 비보존 숭어 정자의 머리는 공모양으로 직경 $1.26{\pm}0.08 \{mu}textrm{m}$, 길이 $1.06{\pm}0.07 \{mu}textrm{m}$ 였으며, 과립상의 염색질을 가지고 있었다. 숭어 정자의 냉장보존시($0^{\circ}C$, 10일간) 희석액으로는 동종의 혈정이 가장 높은 정자활성을 나타냈으며, egg-tris, 0.1M, 0.3M 및 0.5M glucos에서는 활성이 서로 비슷하였다. 또한 동해방지제로 10% DMSO, 희석액으로 MFRS를 사용하여 냉동보존한 후 해동시켰을 때 대조구와 유사한 수정률을 보였다. 냉동보존 후 해동시킨 일부 정자 중에서는 세포막이 이탈되거나 소실되는 구조적 변화를 나타냈다.

Keywords

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