Mitochondrial DNA diversity and geographical distribution of sexual and asexual strains of the braconid parasitoid Meteorus pulchricornis
Mitochondrial DNA diversity and geographical distribution of sexual and asexual strains of the braconid parasitoid Meteorus pulchricornis
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DOI：
10.1111/eea.12853
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发表时间：
2019-12-06
影响因子：
1.9
通讯作者：
Maeto, Kaoru
中科院分区：
文献类型：
--
作者：
Fujie, Shunpei;Wachi, Nakatada;Maeto, Kaoru
无性生殖是利用寄生蜂作为生物防治剂的一个重要工具。在日本，丽角流星茧蜂（Meteorus pulchricornis（Wesmael））的无性（无融合生殖）品系与有性（生殖）品系同域。线粒体细胞色素c氧化酶亚基I（COI）序列的系统发育分析的结果表明，在日本岛屿上的两个主要的单倍型组。北方群I主要包含有性株，而南方群II包含有性株和无性株。大多数无性株可能来自组II。最近在新西兰建立的一个无性株系与日本的一个株系具有相同的单倍型，并被证明起源于东亚。讨论了该蜂无性生殖进化的三种假说：隐性基因假说、杂交假说和细胞质成分假说。
Asexuality is an important tool with regard to the use of parasitoid wasps as biocontrol agents. Asexual (apomictic thelytokous) strains of Meteorus pulchricornis (Wesmael) (Hymenoptera: Braconidae), a polyphagous endoparasitoid of lepidopteran larvae, are sympatric with sexual (arrhenotokous) strains in Japan. The results of phylogenetic analyses of mitochondrial cytochrome c oxidase subunit I (COI) sequences indicated two major haplotype groups on the Japanese islands. The northern group I predominantly contained sexual strains, whereas the southern group II contained both sexual and asexual strains. Most asexual strains were likely derived within group II. An asexual strain recently established in New Zealand has the identical haplotype to a strain in Japan and was proven to have originated from East Asia. Three hypotheses on the evolution of asexuality are discussed for this parasitoid wasp: recessive gene, hybridization, and cytoplasmic element.