Estimating hybridization rates in the wild: Easier said than done?
Estimating hybridization rates in the wild: Easier said than done?
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DOI：
10.1111/evo.14082
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发表时间：
2021-07-06
期刊：
影响因子：
3.3
通讯作者：
Delmore, Kira E.
中科院分区：
文献类型：
--
作者：
Justen, Hannah;Kimmitt, Abigail A.;Delmore, Kira E.
杂交对自然种群的进化轨迹有重要影响，但在野生和个体水平上对这一过程的估计缺乏。Justyn等人试图利用公民科学数据库eBird来填补这一空白，但这种方法存在局限性。在这里，我们通过文献检索、案例研究和eBird与北美鸟类（BNA）（一个使用科学文献记录杂交的数据库）之间的比较，概述并直接测试了这些局限性。我们使用了Lazuli和Indigo之间的杂交区来强调在估计杂交率时考虑地理范围的重要性，并进行了两项文献检索，以显示在量化这些比率时考虑隐杂交（那些不能使用表型性状识别的杂交）的重要性。我们还使用BNA和一个白面朱鹮和光泽朱鹮杂交的案例研究来表明，与专家相比，公民科学家低估了杂交的情况。Justyn等人强调了文献中的一个重要空白，但他们的结果可能代表了鸟类之间杂交的下限，需要对他们的结果进行更细致的解释（例如，考虑外在的合子后选择）。
Hybridization has important effects on the evolutionary trajectories of natural populations but estimates of this process in the wild and at the individual-level are lacking. Justyn et al. attempted to fill this gap using the citizen science database eBird but there are limitations to this approach. Here, we outline and directly test these limitations using literature searches, case studies, and a comparison between eBird and Birds of North America (BNA), a database that documents hybridization using the scientific literature. We use a hybrid zone between Lazuli and Indigo buntings to highlight the importance of considering geographic range when estimating rates of hybridization and two literature searches to show the importance of considering cryptic hybrids (those that cannot be identified using phenotypic traits) when quantifying these rates. We also use BNA and a case study of hybrid White-faced and Glossy Ibises to show that citizen scientists are underreporting hybrids compared with experts. Justyn et al. highlighted an important gap in the literature, but their results likely represent the lower limit of hybridization between birds and a more nuanced interpretation of their results (e.g., considering extrinsic postzygotic selection) is needed.