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作者:虞傲撵  时间:2019-03-07 05:05:06  人气:

By Jonathan Knight in San Francisco A SPECIES’ survival normally depends on its genetic diversity. The Argentine ant, however, is conquering the world with the opposite strategy. This invasive creature has established a homogeneous “supercolony” in the US capable of dominating all local ants, say researchers in California. The Argentine ant (Linepithema humile) arrived in the US in the 19th century, in shipments of South American coffee delivered to New Orleans. Its descendants have since spread as far as California, displacing local species throughout the state. The ants have also made it to Europe,