Evidence for widespread gene flow and migration in the Globe Skimmer dragonfly Pantala flavescens
Evidence for widespread gene flow and migration in the Globe Skimmer dragonfly Pantala flavescens
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DOI：
10.48156/1388.2022.1917166
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发表时间：
2022-03
影响因子：
0.9
通讯作者：
J. Ware;M. Kohli;C. M. Mendoza;Daniel Troast;H. Jinguji;K. Hobson;G. Sahlén;R. C. Anderson;F. Suhling
中科院分区：
文献类型：
--
作者：
J. Ware;M. Kohli;C. M. Mendoza;Daniel Troast;H. Jinguji;K. Hobson;G. Sahlén;R. C. Anderson;F. Suhling
利用地理上广泛的线粒体DNA数据集、更有限的核标记样本、翅同位素(δ2H)数据和文献综述，对全球种群结构和分布格局进行了评估。样本之间没有恢复到空间或时间单倍型结构。同位素数据表明，大多数样本是采集点的移民。对该物种迁徙事件的文献回顾证实，该物种经常发生洲间和洲内迁徙(大多数报告来自亚洲、非洲和澳大拉西亚)，个体和种群分散在陆地和海洋数千公里处。迁徙恰逢盛行的风和季节性的降雨，这表明了一种我们命名为泛热带潘塔拉传送带的机制，这表明具有出色飞行能力的水生昆虫可能会进行广泛的基因流动，与幼虫的快速发育有关。
The global population structure and dispersal patterns of Pantala flavescens (Fabricius, 1798) are evaluated using a geographically extensive mitochondrial DNA dataset, a more limited samples of nuclear markers, wing isotopic (δ²H) data and a literature review. No spatial or temporal haplotype structure was recovered between the samples. Isotope data suggest that most samples were immigrants at the collection locations. A literature review of migration events for the species confirms regular inter-and intra-continental migrations occur (the majority reported from Asia, Africa and Australasia), with individuals and swarms dispersing thousands of kilometers over land and oceans. Migrations coincide with prevailing winds and seasonal rains, which points to a mechanism we name the “pantropical Pantala conveyor belt”, suggesting widespread gene flow is possible for an aquatic insect with excellent flying ability linked to rapid larval development.