農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本文旨在探討泥鰍、斑馬魚、牡蠣與文蛤核型的製作與分析。試驗係以胚體為材料，取其細胞分裂旺盛，容易取得分裂中期Metaphase 細胞的優點。研究結果發現，泥鰍的染色體數2n=48，包含二對 Metacentric，八對 Submetacentric，一對 Subtelocentric，其餘十三對是Telocentric。斑馬魚的染色體數也是2n=48，包含三對 Metacentric，十七對Submetacentric 與四對 Subtelocentric。至於牡蠣其染色體數目2n=20，包括十對Metacentric。而文蛤染色體數2n=50 ，分別為十對 Metacentric，十四對Submetacentric與一對的 Subtelocentric 者。

The karyotypes of loach Misgurus anguilicaudatus, zebra fish Brachydanio rerio, oyster Crassostrea gigas and hard clam Meretrix lusoria were obtainedusing embryo chopping method.
The diploid chromosome numbers of each species are as follows, (a) loach:48, including 2 pairs of metacentric, 8 pairs of sub-metacentric, 1 pair ofsubtelocentric, and the other 13 pairs are telocentric chromosomes; (b) zebrafish: 48, including 3 pairs of metacentric, 17 pairs of submetacentric, 4 pairsof subtelocentric ones; (c) oyster: 20, including 10 pairs of metacentric ones;(d) hard clam: 50, including 10 pairs of metacentric, 14 pairs of submetacentricand 1 pair of subtelocentric ones.