A tree island approach to inferring phylogeny in the ant subfamily Formicinae, with especial reference to the evolution of weaving
A tree island approach to inferring phylogeny in the ant subfamily Formicinae, with especial reference to the evolution of weaving
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DOI：
10.1016/s1055-7903(03)00114-3
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发表时间：
2003-11-01
影响因子：
4.1
通讯作者：
Crozier, RH
中科院分区：
文献类型：
--
作者：
Johnson, RN;Agapow, PM;Crozier, RH
蚁亚科是一个大的组合（2458种（J.Nat.Hist.29（1995）1037），包括物种编织叶巢与幼虫丝，其中的后胸膜腺-祖先定义蚂蚁的特征-已其次丢失。我们使用了两个线粒体基因的序列（细胞色素B和细胞色素氧化酶2）从18种蚁群和4种外群分类群中获得稳健的系统发育，采用10，000个随机构建的树作为起始点，并从ML树和与其没有显著不同的那些树导出最大似然一致性树。参数自举法显示ML一致性树与基于形态学的三种方案相比显著更好地拟合数据，其中博尔顿（Identification Guide to the Ant Genera of the World，哈佛大学出版社，剑桥，MA）的一致性树是这些备选树中最好的。性状图谱显示，编织至少出现了四次，可能丢失了一次。最大似然分析表明，损失的后胸膜腺是显着相关的织生活模式。树被发现的频率与它们的可能性的关系图表明，具有高可能性的树比具有低可能性的树具有更大的吸引盆。虽然这一结果表明，单次搜索更有可能找到高似然比低似然树岛，它也表明，只搜索一个最好的树可能会丢失重要的信息。(C)2003 Elsevier Science（美国）。All rights reserved.
The ant subfamily Formicinae is a large assemblage (2458 species (J. Nat. Hist. 29 (1995) 1037), including species that weave leaf nests together with larval silk and in which the metapleural gland-the ancestrally defining ant character-has been secondarily lost. We used sequences from two mitochondrial genes (cytochrome b and cytochrome oxidase 2) from 18 formicine and 4 outgroup taxa to derive a robust phylogeny, employing a search for tree islands using 10,000 randomly constructed trees as starting points and deriving a maximum likelihood consensus tree from the ML tree and those not significantly different from it. Non-parametric bootstrapping showed that the ML consensus tree fit the data significantly better than three scenarios based on morphology, with that of Bolton (Identification Guide to the Ant Genera of the World, Harvard University Press, Cambridge, MA) being the best among these alternative trees. Trait mapping showed that weaving had arisen at least four times and possibly been lost once. A maximum likelihood analysis showed that loss of the metapleural gland is significantly associated with the weaver life-pattern. The graph of the frequencies with which trees were discovered versus their likelihood indicates that trees with high likelihoods have much larger basins of attraction than those with lower likelihoods. While this result indicates that single searches are more likely to find high- than low-likelihood tree islands, it also indicates that searching only for the single best tree may lose important information. (C) 2003 Elsevier Science (USA). All rights reserved.