Species Diversity in the Braconid Wasp Genus Allorhogas (Doryctinae) Associated With Cynipid Galls on Live Oaks (Quercus: Fagaceae) Using Natural History, Phylogenetics, and Morphology
Species Diversity in the Braconid Wasp Genus Allorhogas (Doryctinae) Associated With Cynipid Galls on Live Oaks (Quercus: Fagaceae) Using Natural History, Phylogenetics, and Morphology
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利用自然历史、系统发育学和形态学研究与活橡树（栎属：壳斗科）上的犬瘿相关的茧蜂属 Allorhogas (Doryctinae) 的物种多样性
DOI：
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发表时间：
2020
影响因子：
3.4
通讯作者：
A. Zaldívar‐Riverón
中科院分区：
文献类型：
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作者：
Ernesto Samacá;S. Egan;A. Zaldívar‐Riverón
在一个空前灭绝的时代，新的生物多样性的发现对所有生命科学和人类生活质量都至关重要。需要注意的一个生态和经济上重要的群体是膜翅目小蜂科，估计包括数千种未被描述的物种。本研究对美国东南部三种橡树（壳斗科：栎科：栎科）的五种木蜂的幼虫进行了遗传结构和物种多样性的研究。我们探索了线粒体DNA （mtDNA）单位点条形码COI区域的遗传变异，并对上述标记和使用超保守元件（UCEs）的全基因组核数据采用不同的基于DNA序列的物种划分方法进行了分析。我们发现，在不同植物器官的不同蛇脂类物种的胆囊中饲养的异花蛇标本，以及在两个不同地理区域的相同类型的胆囊中饲养的标本之间，mtDNA条形码区域存在很大差异。此外，我们对mtDNA和多位点核数据的分析一致地划定了至少五个遗传谱系。我们将这些分子证据与形态学资料相结合，描述了4个新种，并重新描述了该属的模式种Allorhogas gallicola Gahan，该物种具有与4个新种相似的形态学、生态学和生物地理特征。这项研究强调了进行详细的饲养调查的重要性，以揭示存在于胆囊前系统中的复杂的物种相互作用和物种多样性。
Abstract The discovery of new biodiversity, during an age of unprecedented extinction, is vital for all the life sciences and the quality of human life. One ecologically and economically important group that requires attention is the hymenopteran family Braconidae, which is estimated to include thousands of undescribed species. Here we assessed the genetic structure and species diversification in the braconid wasp genus Allorhogas Gahan (Doryctinae) that were reared from galls of five cynipid wasp species associated with three live oak species (Fagaceae: Quercus: subsection Virentes) in the southeastern United States. We explored genetic variation in the single-locus barcoding COI region of the mitochondrial DNA (mtDNA), and conducted analyses with different DNA sequence-based species delimitation approaches both for the above marker and genome-wide nuclear data using ultraconserved elements (UCEs). We found high variation in the mtDNA barcoding region among specimens of Allorhogas reared from galls made by different cynipid species in distinct plant organs and among specimens reared from the same type of gall from two separate geographic regions. In addition, our analyses of mtDNA and multilocus nuclear data were concordant in consistently delimiting at least five genetic lineages. We combined this molecular evidence with morphological data to describe four new species and redescribe the type species of the genus, Allorhogas gallicola Gahan, which exhibited similar morphological, ecological, and biogeographic characteristics to the four new species.This study highlights the importance of carrying detailed rearing surveys to uncover the intricate species interactions and species diversity that is present in gall-former systems.
影响因子：
5.3
作者：
Suchard MA;Lemey P;Baele G;Ayres DL;Drummond AJ;Rambaut A
通讯作者：
Rambaut A