Mitochondrial DNA analysis of the introduced fall webworm, showing its shift in life cycle in Japan
Mitochondrial DNA analysis of the introduced fall webworm, showing its shift in life cycle in Japan
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DOI：
10.1111/j.1479-8298.2004.00051.x
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发表时间：
2004-06-01
影响因子：
0.9
通讯作者：
Takeda, M
中科院分区：
文献类型：
--
作者：
Gomi, T;Muraji, M;Takeda, M
美国白蛾Hypbantria cunea（Drury）（鳞翅目：牛蒡科），于1945年从北美引入日本。在引进后的前30年里，它的生命周期是二化性的。此后，它的生命周期在日本西南部地区转向三化性。对于导致化性转变的过程，人们提出了两种假设：一种是基于单一的殖民地，另一种是基于多个独立的殖民地。为了验证这些假设，我们分析了14个日本人、1个韩国人和2个北美人的黑头型血吸虫的线粒体（mt）DNA序列。cunea。此外，将相同区域的mtDNA与两个北美人群的红头发类型进行了比较。在黑头类型中，所有日本人群和韩国人群的线粒体DNA序列都是相同的，但北美人群的序列彼此不同，并且与其他人群的序列不同。这些结果表明，化性转变的过程最初发生在日本，日本和韩国的H。cunea起源于北美相对较小的地区。
The fall webworm, Hypbantria cunea (Drury) (Lepidoptera: Arctiidae), was introduced from North America into Japan in 1945. For the first three decades after its introduction, its life cycle was bivoltine. Thereafter, its life cycle shifted to trivoltine in south-western areas of Japan. Two hypotheses have been proposed for the process that led to the shift in voltinism: one based on a single and the other on multiple independent colonizations. To test these hypotheses, mitochondrial (mt)DNA sequences were analyzed in the black-headed type of 14 Japanese, one Korean and two North American populations of H. cunea. In addition, the same regions of mtDNA were compared with the red-headed type of two North American populations. In the black-headed type, mtDNA sequences were the same in all Japanese populations and in the Korean population, but sequences of the North American populations differed from each other and from those of the other populations. These results suggest that the process of the shift in voltinism occurred originally in Japan, and that the Japanese and the Korean population of H. cunea originated from a relatively small area in North America.