DNA Barcoding Reveals Generalization and Host Overlap in Hummingbird Flower Mites: Implications for the Mating Rendezvous Hypothesis
DNA Barcoding Reveals Generalization and Host Overlap in Hummingbird Flower Mites: Implications for the Mating Rendezvous Hypothesis
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DOI：
10.1086/718474
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发表时间：
2022-04-01
影响因子：
2.9
通讯作者：
Garcia-Robledo, Carlos
中科院分区：
文献类型：
--
作者：
Bizzarri, Laura;Baer, Christina S.;Garcia-Robledo, Carlos
蜂鸟花螨被认为是垄断单一的寄主植物物种，由于性选择独特的交配会合地点。我们测试的主要假设的交配会合假说极端主机专业化重建热带蜂鸟花螨和它们的宿主植物之间的相互作用，使用DNA条形码和分类鉴定。从489株花卉中采集螨类10,654只。我们从1,928个螨标本中提取DNA，并扩增细胞色素c氧化酶I（CO 1）DNA条形码。我们分析了网络结构，以评估螨类对寄主植物的泛化或专化程度。我们记录了来自三个属（Proctolaelaps，Rhinoseius和Tropicoseius）的18种蜂鸟花螨与14种植物相互作用。我们发现，通才螨是常见的，和同类螨种往往共享宿主植物。我们的研究结果挑战的假设，严格的专业化，支持这个系统作为一个例子，交配会合进化。
Hummingbird flower mites are assumed to monopolize single host plant species owing to sexual selection for unique mating rendezvous sites. We tested the main assumption of the mating rendezvous hypothesis-extreme host specialization-by reconstructing interactions among tropical hummingbird flower mites and their host plants using DNA barcoding and taxonomic identifications. We collected 10,654 mites from 489 flowers. We extracted DNA from 1,928 mite specimens and amplified the cytochrome c oxidase I (CO1) DNA barcode. We analyzed the network structure to assess the degree of generalization or specialization of mites to their host plants. We recorded 18 species of hummingbird flower mites from three genera (Proctolaelaps, Rhinoseius, and Tropicoseius) interacting with 14 species of plants. We found that generalist mites are common, and congeneric mite species often share host plants. Our results challenge the assumption of strict specialization that supports this system as an example of mating rendezvous evolution.