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首页> 外文期刊>Aquatic Invasions >Alien invasion in Wallace’s Dreamponds: records of the hybridogenic “flowerhorn” cichlid in Lake Matano, with an annotated checklist of fish species introduced to the Malili Lakes system in Sulawesi
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Alien invasion in Wallace’s Dreamponds: records of the hybridogenic “flowerhorn” cichlid in Lake Matano, with an annotated checklist of fish species introduced to the Malili Lakes system in Sulawesi

机译：华莱士梦池中的外星人入侵：在马塔诺湖中杂交的“花角”丽鱼科鱼的记录，以及在苏拉威西岛的马里里湖系统中引入的带注释鱼类清单

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Invasive fish species can have major impacts on freshwater faunas, particularly in isolated systems harbouring adaptive animal radiations. Here, we report on the occurrence and recent rapid expansion of the hybridogenic “flowerhorn” cichlid in ancient Lake Matano, the hydrological head of the Malili Lakes system in Central Sulawesi, Indonesia. We show that flowerhorns rapidly dispersed along the lake’s shoreline, inhabited most of the southern inshore habitats in 2010, and were present all around the lake in mid-2012. In addition, we present stomach content and observational data supporting the hypothesis that this cichlid threatens the local fauna through both predation and competition. We discuss 13 additional alien fish species recorded in the Malili Lakes drainage since 2000, including the recent, first record of the invasive sailfin catfish Pterygoplichthys pardalis for Sulawesi, highlighting the multitude of artificial introductions of foreign fish species into these unique and highly isolated freshwater systems. We conclude that alien fish species pose both serious and diverse threats to the fauna of the Malili Lakes system – an ecosystem of high socio-economic importance and an exceptional natural laboratory for study of evolution, referred to as “Wallace’s Dreamponds”. Finally, we provide recommendations for minimizing future alien species introductions.
机译：入侵鱼类可能对淡水动物群产生重大影响，特别是在带有适应性动物辐射的孤立系统中。在这里，我们报道了在印度尼西亚中部苏拉威西岛马里利湖系水文头的古老湖马塔诺湖中发生的杂交“ flowerhorn”丽鱼科鱼的发生和最近的迅速扩张。我们的研究表明，2010年中，花角在湖岸沿线迅速散布，栖息在南部沿海大部分生境中，并在2012年年中遍布湖中。此外，我们提供了胃内容和观察数据，支持了这种丽鱼科鱼通过捕食和竞争威胁本地动物的假设。我们讨论了自2000年以来在马里利湖流域记录的13种其他外来鱼类物种，包括最近首次记录到苏拉威西岛的侵入性sail鱼 Pterygoplichthys pardalis，强调了将大量人工鱼引进这些独特而高度孤立的淡水系统。我们得出的结论是，外来鱼类物种对马里里湖系统的动物群构成了严重且多样的威胁。马里里湖系统具有重要的社会经济意义，是一个研究进化的卓越自然实验室，被称为“华莱士的梦幻池塘”。最后，我们提供了一些建议，以尽量减少将来引入外来物种。

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