Genetic diversity and colony breeding structure in native and introduced ranges of the Formosan subterranean termite, Coptotermes formosanus
Genetic diversity and colony breeding structure in native and introduced ranges of the Formosan subterranean termite, Coptotermes formosanus
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DOI：
10.1007/s10530-011-0087-7
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发表时间：
2012-02-01
影响因子：
2.9
通讯作者：
Vargo, Edward L.
中科院分区：
文献类型：
--
作者：
Husseneder, Claudia;Simms, Dawn M.;Vargo, Edward L.
台湾乳白蚁（Coptotermes formosanus）是重要的外来入侵害虫之一。原产于中国，C.在过去的400年里，福尔摩沙已扩散到地球仪的许多热带和亚热带地区，包括日本、夏威夷和美国大陆。虽然目前的分布是有据可查的，但关于入侵模式和引进对该物种种群遗传学的影响的信息在很大程度上缺乏。本研究利用微卫星基因分型技术对两个本地种群（中国广东和湖南）和两个引进种群（毛伊岛和考艾岛，夏威夷）的遗传结构进行了分析。我们还重新分析了来自中国、日本、夏威夷和美国大陆的其他种群的已发表数据。来自湖南的种群，最早引入中国以外（日本）和第一个引入美国大陆（南卡罗来纳州），与任何本地或引进种群的遗传相似性很小。然而，来自俄勒冈州（HI），新奥尔良（LA）和卢瑟福县（NC）的种群表现出密切的相似性。一般来说，遗传模式表明多次引入美国，例如，两个单独的引入毛伊岛。在几乎所有最近的引进（1940年后）中发现了瓶颈效应。在引进范围内的所有群体表现出较低的遗传多样性比那些在本地范围。然而，这种低遗传多样性并没有导致形成一夫多妻制的超级殖民地已被描述为其他入侵的白蚁和蚂蚁物种。
The Formosan subterranean termite, Coptotermes formosanus is recognized as one of the most important invasive pest species. Originating from China, C. formosanus has spread to many tropical and subtropical regions around the globe in the last 400 years, including Japan, Hawaii and the continental USA. Although the current distribution is well documented, information about the patterns of invasion and effects of introduction on the population genetics of this species is largely lacking. We analyzed the genetic structure of populations from two native populations (Guangdong and Hunan provinces, China) and two introduced populations (Maui and Kauai, Hawaii) using microsatellite genotyping. We also reanalyzed published data of additional populations from China, Japan, Hawaii, and the continental USA. The population from Hunan, the earliest introduction outside of China (Japan) and the first introduction to the continental USA (South Carolina) showed little genetic similarity with any of the native or introduced populations investigated. However, populations from Oahu (HI), New Orleans (LA) and Rutherford County (NC) showed close similarity. In general, genetic patterns suggest multiple introductions to the USA, with, for example, two separate introductions to the island of Maui. Bottleneck effects were detected in almost all recent introductions (after 1940). All populations in the introduced range showed lower genetic diversity than those in the native range. However, this low genetic diversity did not result in the formation of polygynous supercolonies as has been described for other invasive termite and ant species.