Invisible apple snail invasions: importance of continued vigilance and rigorous taxonomic assessments
Invisible apple snail invasions: importance of continued vigilance and rigorous taxonomic assessments
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看不见的苹果螺入侵：持续保持警惕和严格分类评估的重要性
DOI：
10.1002/ps.5241
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发表时间：
2018
影响因子：
4.1
通讯作者：
Kenneth A Hayes
中科院分区：
文献类型：
--
作者：
Qianqian Yang;Suwen Liu;Chao He;Robert H Cowie;Xiaoping Yu;Kenneth A Hayes
由于苹果蜗牛种之间的总体壳形态的相似性和相当大的物种内的变异性，大量的分类混乱困扰着准确识别的Pomaceaspecies。许多入侵的苹果蜗牛被错误地鉴定为P。自1980年左右引入亚洲以来，2008年，除P.小管被识别。在2013年，第五个，以前未被识别的血统报告来自中国，这表明，尽管以前的工作带来的分类清晰度，继续调查和分类研究是必要的，以防止额外的引进和继续传播，以及制定有效的管理策略。从这个新记录的谱系的样品中的所有序列被恢复在一个单系分支描绘密切相关的物种，但是，不同的DNA条形码方法产生不一致的物种边界。此外，核EF1α序列表明不完整的谱系排序或最近的杂交与其他两个已建立的species.CONCLUSIONBarcoding的身份不明的谱系是一个有价值的工具，物种发现，和一个强大的方法划定引进物种。然而，确定在中国新发现的入侵谱系的身份将需要一种综合的分类方法，将来自本地范围的个体纳入其中，并检查世界各地博物馆的自然历史藏品。为了管理和防止已经确定的物种的进一步扩散，并阻止引入新的分类群，必须进行持续的监测和严格的分类评估。© 2018化学工业协会
BACKGROUNDDue to the similarities of overall shell morphology among apple snail species and considerable variability within species, substantial taxonomic confusion has plagued the accurate identification ofPomaceaspecies. Many invasive apple snails have been mistakenly identified asP. canaliculatasince their introduction to Asia around 1980. In 2008, three other introduced species in addition toP. canaliculatawere recognized. In 2013, a fifth, previously unrecognized lineage was reported from China, indicating that despite the taxonomic clarity brought by previous work, continued surveys and taxonomic research are necessary to prevent additional introductions and continued spread, as well as to develop effective management strategies.RESULTSPhylogenetic analysis of mitochondrial COI sequences confirmed the presence of a widespread unidentifiedPomacealineage in China. All sequences from samples of this newly documented lineage were recovered in a monophyletic clade delineated from closely related species; however, different DNA barcoding methods yielded inconsistent species boundaries. Additionally, nuclear EF1α sequences indicated incomplete lineage sorting or recent hybridization of the unidentified lineage with the other two established species.CONCLUSIONBarcoding is a valuable tool for species discovery, and a powerful approach for delineating introduced species. However, determining the identity of the newly discovered invasive lineage in China will require an integrated taxonomic approach incorporating individuals from the native range, and examination of natural history collections at museums around the world. To manage and prevent additional spread of already established species, and to stop the introduction of new taxa, continued monitoring and rigorous taxonomic assessments must be undertaken. © 2018 Society of Chemical Industry