Evolutionary diversification of the bean beetle genus Callosobruchus (Coleoptera: Bruchidae): traits associated with stored‐product pest status
Evolutionary diversification of the bean beetle genus Callosobruchus (Coleoptera: Bruchidae): traits associated with stored‐product pest status
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DOI：
10.1111/j.1365-294x.2006.03030.x
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发表时间：
2006-10
影响因子：
4.9
通讯作者：
M. Tuda;J. Rönn;S. Buranapanichpan;N. Wasano;G. Arnqvist
中科院分区：
文献类型：
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作者：
M. Tuda;J. Rönn;S. Buranapanichpan;N. Wasano;G. Arnqvist
尽管许多以植物为食的昆虫都是害虫，但人们很少努力去确定使类群获得或失去害虫状态的关键进化性状转变。 Callosobruchus 属中的大部分物种是菜豆族储存、干燥收获后豆类的重要经济害虫。然而，人们对这种进食习惯的演变知之甚少。在这里，我们基于三个线粒体基因重建了亚洲和非洲的Callosobruchus的系统发育，并评估了哪些性状与进化起源或在干豆上繁殖能力的丧失有关。我们的系统发育分析表明，该物种分为 chinensis 和 maculatus 分支，这也得到了生殖器形态的支持，以及一个额外的并系群。祖先使用干豆的能力在 chinensis 分支中已经丧失，但在 C. chinensis 中又获得了。干豆的使用和寄主植物的使用都受到系统发育的限制，并且两者的转变显着相关。寄主从菜豆亚族到木豆亚科的转变比相反的情况更常见，并且在使用幼豆的物种中更有可能发生。当使用菜豆寄主并促进栖息地从热带地区向温带地区转移时，更有可能获得使用干豆的能力。对干旱气候的适应也与干豆和菜豆的繁殖能力有关。因此，我们的分析表明，对干旱气候和菜豆寄主的生理适应都使甲虫易于成为栽培豆类的害虫。
Despite the fact that many plant‐feeding insects are pests, little effort has been made to identify key evolutionary trait transitions that allow taxa to acquire or lose pest status. A large proportion of species in the genus Callosobruchus are economically important pests of stored, dry postharvest beans of the tribe Phaseoleae. However, the evolution of this feeding habit is poorly understood. Here, we present a reconstruction of the phylogeny of the Asian and African Callosobruchus based on three mitochondrial genes, and assess which traits have been associated with the evolutionary origin or loss of ability to reproduce on dry beans. Our phylogenetic analysis showed that species group into the chinensis and the maculatus clades, which are also supported by genital morphology, and an additional paraphyletic group. Ancestral ability to use dry beans has been lost in the chinensis clade but acquired again in C. chinensis. Dry‐bean use and host‐plant use were both phylogenetically constrained and transitions in the two were significantly correlated. Host shifts from the subtribe Phaseolinae to Cajaninae were more common than the reverse and were more likely in species using young beans. The ability to use dry beans was more likely gained when using Phaseolinae hosts and promoted habitat shifts from tropical to temperate regions. Adaptation to arid climate was also associated with the ability to reproduce on dry beans and on Phaseolinae. Thus, our analysis suggests that physiological adaptations to an arid climate and to Phaseolinae hosts both render beetles predisposed to become pests of cultivated beans.