"SYSTEMATIC AND EVOLUTIONARY GENETIC STUDIES OF CHINESE DROSOPHILA"

利用与中国科学家合作在中国收集的果蝇，我们得到了以下结果：蝇类分类：共记录蝇类200余种，其中新种30余种。我们还有大约100个标本是未被描述的新物种。此外，我们还在广州和昆明保存了3万多具尸体标本。中期核型分析：昆明地区采集到的白纹裂殖菌核型为亚洲大陆型，即短的第4染色体。我们在70%的细胞系中发现了多余的染色体，即所谓的b染色体。与其他东亚人口相比，这是一个非常高的频率。线粒体DNA变异：利用广州产白纹蝶的限制性内切酶分析了线粒体dha的切割图谱。其中一种类型与日本菌株相似。

Using drosophilid flies collected in China by collaboration with Chinese scientists, we got following results:1. Classification of flies: We recorded 200 different species in total, including more than thirty new species. We also have about 100 speciments which are undescribed new species. Moreover, we are still keeping more than 30,000 dead-specimens in Guangzhou and in Kunming.2. Metaphase karyotype analyses: The karyotype of D. albomicans collected in Kunming have the Asian-Continent type, that is, the short 4th chromosomes. We found supernumerary chromosomes, so-called Bchromosomes in 70% of lines. This is a extremely high frequency comparing with other East-Asian populations.3. Mitochondrial DNA variations: We analysed the cleavage map of mtDHA using restriction endonucleases of D. albomicans collected in Guangzhou. One type is similar to that of the Japanese strains.