Pomacea canaliculata is a freshwater snail native to southern South America. The aims of this work are to update its distribution in Argentina and to analyze through niche models whether the environmental conditions from its original distribution can anticipate its recently expanded range. Almost all records of P. canaliculata before 1958 (original records) belong to del Plata or connected basins. A quarter of the new present records are located in basins not connected to del Plata, indicating a recent expansion of the distribution range of P. canaliculata in Argentina. Recently colonized areas are mostly environmentally suitable according to the projection of the original distribution model, thus natural barriers were probably the main limits to its distribution in the past. According to the model, many regions outside its original range, including several not yet colonized, are suitable for the establishment of P. canaliculata. Consequently, it is likely that this species will continue establishing new populations in Argentina, especially if fishermen and aquarists continue to move snails to new locations. Our study revealed that an extensive but overlooked invasion is in process in its native range, where the impacts on diversity and ecosystems functioning may differ from those already described elsewhere.

中文翻译：

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超越自己的极限：全球入侵的苹果蜗牛 Pomacea canaliculata 在阿根廷的范围扩大

Pomacea canaliculata 是一种原产于南美洲南部的淡水蜗牛。这项工作的目的是更新其在阿根廷的分布，并通过生态位模型分析其原始分布的环境条件是否可以预测其最近扩大的范围。P. canaliculata 1958 年之前的几乎所有记录（原始记录）都属于del Plata 或连通盆地。四分之一的新记录位于未与德尔普拉塔相连的盆地中，这表明最近阿根廷小管藻分布范围有所扩大。根据原始分布模型的投影，最近的殖民区域大多是环境适宜的，因此自然屏障可能是过去其分布的主要限制。根据该模型，许多超出其原始范围的区域，包括几种尚未定殖的，都适合建立 P. canaliculata。因此，该物种很可能会继续在阿根廷建立新的种群，特别是如果渔民和水族爱好者继续将蜗牛转移到新的地点。我们的研究表明，在其原生范围内正在进行广泛但被忽视的入侵，对多样性和生态系统功能的影响可能与其他地方已经描述的不同。