Invaders versus endemics: alien gastropod species in ancient Lake Ohrid
Invaders versus endemics: alien gastropod species in ancient Lake Ohrid
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DOI：
10.1007/s10750-013-1724-1
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发表时间：
2014-11-01
期刊：
影响因子：
2.6
通讯作者：
Wilke, Thomas
中科院分区：
文献类型：
--
作者：
Albrecht, Christian;Foeller, Kirstin;Wilke, Thomas
物种入侵古代湖泊是一个重要但鲜为人知的现象。在古老的奥赫里德湖，从 2003 年到 2012 年，利用形态和遗传数据对入侵软体动物物种进行了系统评估。最近在 386 个地点中的 4 个地点发现了两种全球入侵腹足动物物种，即 Physa acuta 和 Ferrissia fragilis。这些地点受到人为影响。入侵物种与地方性物种同时出现。对这两个物种的本地和入侵地区种群的系统发育分析证实了它们的身份并提供了对其入侵历史的见解。因此，P. acuta 在遗传上比 F. fragilis 更加多样化。这两个物种目前都存在于巴尔干半岛的相当多的湖泊中。讨论了奥赫里德湖和巴尔干地区未来可能的趋势，并且这两个物种有可能进一步传播。鉴于奥赫里德湖持续的环境变化，未来几年对非本地或其他广泛物种的观测数量可能会增加，应仔细监测这些物种及其对本地物种的影响。此外，经常遭受外来物种入侵的古代湖泊可能成为研究入侵生物学重要课题的有趣模型系统。
Species invasions into ancient lakes are an important but little understood phenomenon. At ancient Lake Ohrid, a systematic assessment of invasive mollusc species using morphological and genetic data was conducted from 2003 to 2012. Two globally invasive gastropod species, Physa acuta and Ferrissia fragilis, have recently been discovered at 4 out of 386 sites. These sites are anthropogenically impacted. The invasive species co-occur with endemics. Phylogenetic analyses of populations from native and invaded ranges of both species confirmed their identities and provided insights into their invasion histories. Accordingly, P. acuta is genetically more diverse than F. fragilis. Both species are currently present in a considerable number of lakes on the Balkan Peninsula. Possible future trends in Lake Ohrid and the Balkans are discussed and further spread of both species is likely. Given the ongoing environmental change in Lake Ohrid, the number of observations of non-indigenous or other widespread species will probably rise in the coming years and such species and their impact on native species should be carefully monitored. Moreover, ancient lakes with recurrent invasions of alien species might serve as interesting model systems for the study of important topics of invasion biology.