ABSTRACT High densities of the invasive sea slug, Pleurobranchaea maculata, have been detected on the Argentinean coast, but studies on the species’ adaptation have been absent until now. Stomach contents of P. maculata in two sampling sites located at Golfo Nuevo, Patagonia Argentina, revealed animals as a major prey, but surprisingly algae ingestion on both sampling sites was abundant. This fact was not reported in previous studies that described opportunistic carnivorous feeding habits of species belonging to the genus Pleurobranchaea. Significant differences in the species prey items were found between sampling sites; however, sedentary polychaetes were the main consumed group at both sites. These results are useful to understand the adaptation of this invasive species in Argentinean waters and to monitor future changes in the benthic communities colonised by P. maculata.

中文翻译：

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巴塔哥尼亚沿海水域入侵海蛞蝓 Pleurobranchea maculata 的饮食

摘要 在阿根廷海岸发现了高密度的入侵海蛞蝓 Pleurobranchaea maculata，但直到现在还没有对该物种适应的研究。位于阿根廷巴塔哥尼亚新高尔夫球场的两个采样点的 P. maculata 的胃内容物表明动物是主要猎物，但令人惊讶的是，两个采样点的藻类摄入量都很丰富。这一事实在之前的研究中没有报道，这些研究描述了属于侧枝菌属的物种的机会性食肉习性。各采样点之间的物种猎物项目存在显着差异；然而，久坐的多毛类动物是两个站点的主要消费群体。