Species richness estimates of Blattodea s.s. (Insecta: Dictyoptera) from northern Guyana vary depending upon methods of species delimitation
Species richness estimates of Blattodea s.s. (Insecta: Dictyoptera) from northern Guyana vary depending upon methods of species delimitation
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DOI：
10.1111/syen.12043
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发表时间：
2014-01-01
影响因子：
4.8
通讯作者：
Ware, Jessica L.
中科院分区：
文献类型：
--
作者：
Evangelista, Dominic A.;Bourne, Godfrey;Ware, Jessica L.
蟑螂（目：蜚蠊目）包括一个分类单元，虽然在热带森林中非常丰富，但在很大程度上仍未被研究。理解物种的多样性是一项具有挑战性的任务，受到大量物种和丰富的神秘或多态形式的阻碍。在这里，我们估计物种丰富度的蟑螂（s.s.）从北方圭亚那，同时应用一种方法来处理这些混杂因素。我们利用两种解释的丰度数据，第一个只使用形态信息，第二个使用形态和遗传条形码信息。这两种物种界定方法极大地影响了物种丰富度的估计结果。当结合遗传条形码时，我们的总物种丰富度估计值下降了26%。我们的研究结果强调了使用独立的数据集来划定物种边界和专家鉴定标本的重要性。
Cockroaches (Order: Blattodea) comprise a taxon that, although very abundant in tropical forests, remains largely unstudied. Making sense of the diversity of species is a challenging task hindered by the large numbers of species and the abundance of cryptic or polymorphic forms. Here, we estimated species richness of cockroaches (s.s.) from northern Guyana while applying a method to deal with these confounding factors. We utilized two interpretations of abundance data, the first using only morphological information, and the second using both morphological and genetic barcode information. The two methods of species delimitation greatly influenced the resulting estimates of species richness. When incorporating genetic barcodes, our total species richness estimate decreased by 26%. Our results emphasize the importance of using independent datasets to delimit species boundaries and expert identification of specimens when possible.