Pichler Arthur, Walters Tina L, Frischer Marc E, Nejstgaard Jens C, Ptáčníková Radka
WasserCluster Lunz - Biological Station GmbH, Dr. Carl Kupelwieser Promenade 5, 3293 Lunz am See, Austria.
University of Georgia, Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, GA 31411, USA.
J Plankton Res. 2021 Oct 28;43(6):945-956. doi: 10.1093/plankt/fbab070. eCollection 2021 Nov-Dec.
The study of invasive species often focuses on regions of recent introduction rather than native habitats. Understanding an invasive species in its natural environment, however, can provide important insights regarding the long-term outcome of invasions. In this study we investigated the diet of the invasive spiny water flea, , in two Austrian perialpine lakes, where it is native. The gut contents of wild-caught individuals were estimated by quantitative polymerase chain reaction, targeting species-specific fragments of the barcoding region of the cytochrome c oxidase I gene of potential prey. The observed prey spectrum of in the study lakes consisted primarily of and . The complex, and also contributed to the diet. Results indicate that is a generalist feeder with a preference for epilimnetic prey.
对入侵物种的研究通常集中在近期引入的区域，而非其原生栖息地。然而，在自然环境中了解入侵物种，可以提供有关入侵长期结果的重要见解。在本研究中，我们调查了奥地利两个高山湖泊中入侵性的多刺水蚤（）的食性，这两个湖泊是它的原生地。通过定量聚合酶链反应，针对潜在猎物细胞色素c氧化酶I基因条形码区域的物种特异性片段，估计野生捕获个体的肠道内容物。研究湖泊中观察到的多刺水蚤猎物谱主要由和组成。复合体、和也构成了其食物来源。结果表明，多刺水蚤是一种食性广泛的捕食者，偏好湖上层猎物。
