INVERSION POLYMORPHISMS IN JAPANESE NATURAL-POPULATIONS OF DROSOPHILA-MELANOGASTER
INVERSION POLYMORPHISMS IN JAPANESE NATURAL-POPULATIONS OF DROSOPHILA-MELANOGASTER
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DOI：
10.1266/jjg.54.69
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发表时间：
1979-01-01
期刊：
影响因子：
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通讯作者：
WATANABE, TK
中科院分区：
文献类型：
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作者：
INOUE, Y;WATANABE, TK
在日本自然居群中发现了4种常见的世界性倒位（2Lt，2RNS，3LP，3RP），4种罕见的世界性倒位（2LA，3LM，3RC，3RMo）和2种复发的地方性倒位（2LW，3LY）。黑腹菌在许多自然种群和源于少量野生捕获苍蝇的种群中随机检测到独特的地方性反转[17]。南方居群的倒位频率普遍高于北方居群，尤其是In（3R）P的倒位频率更高。倒位杂合子的频率几乎等于期望值，除了少数例外的杂合子稀缺的期望值。在胜沼种群中，某些倒位在10年内显著减少，导致4种常见倒位的丰度顺序发生变化。这种变化可能发生在盐尻人身上。这两个种群都非常有趣，因为新的反转频率正在增加，并取代旧的。
Four common cosmopolitan inversions (2Lt, 2RNS, 3LP, 3RP), 4 rare cosmopolitan inversions (2LA, 3LM, 3RC, 3RMo) and 2 recurrent endemic inversions (2LW, 3LY) were distributed in Japanese natural populations of D. melanogaster. Unique endemic inversions [17] were randomly detected in many natural populations and in stocks that originated from a small number of wild caught flies. The frequency of inversions was generally higher in Southern populations than in Northern populations, especially in the case of In(3R)P. The polymorphic inversions did not show any heterosis. The frequencies of inversion heterozygotes were almost equal to the expectations, with a few exceptions of a scarcity of the heterozygotes over the expectation. In the Katsunuma population, some inversions decreased remarkably within 10 yr, which resulted in the change of abundance order among 4 common cosmopolitan inversions. This kind of change might have occurred in the Shiojiri population. Both populations are very interesting in that new inversions are increasing in frequency and replacing the old ones.