全国统一24小时服务热线:400-0000-889400-0000-889  / 13999887799

最新新闻

当前位置:主页 > 最新新闻 >

在行为:科学家发现新物种的黄蜂进化

发布时间:2018-09-21 08:17 作者:admin 来源: 点击: 字号:

The concepts of biodiversity and evolution are generally thought of as something that occurs in thousands, maybe millions of years –; but every once in a while, scientists catch a species red handed: evolving, becoming a new species。

The parasitic wasp, Utetes canaliculatus, on a snowberry shrub, searching for its Rhagoletis fly host。

A new biological study from Rice University did just that, finding that evolutionary changes in one fruit fly species are having a domino effect on at least three species of predatory wasps, forcing them to evolve as well。

“Our study addresses one of the central questions in biology: How do new forms of life originate?” said evolutionary biologist Scott Egan, assistant professor of biosciences at Rice and a co-author of the new study, which is available online in the Proceedings of the National Academy of Sciences。

They study comes at the back of previous research by Egan and colleagues on the fruit fly Rhagoletis pomonella, aka the “apple maggot,” which began plaguing U。S。 apple growers in the 1850s。 Their work showed that Rhagoletis is changing its eating habits so much that it’;s actually diverging into two different species。 The cycle is driven by the different timing of fruiting cycles between apple trees, which some of them now prefer, and the North American hawthorn, where they traditionally used to lay their eggs。 Interestingly enough, human horticulture is leading to the development of a new species。

“Our new work takes a close look at the evolutionary process termed ‘sequential speciation,’” Egan said。 “Sequential speciation identifies the fact that adaptation and speciation of one species is not an isolated process。 The appearance of a new species creates new niche opportunities that can be exploited by other species, and that opportunity can promote the origin of other new species。”

Now, this study found that something similar is happening to three wasp species –; they are already *******ing significant changes, both in genetic terms and in terms of their physiology and behavior。

本文源自: 环亚娱乐

相关文章Related Articles

如果您觉得本站还不错,就请分享给身边的好友吧


分享成功还有机会获得精美礼品哦