The production of commercial potatoes (Solanum tuberosum) for different market classes is of vital agricultural importance in the United States. For the production of chips, fresh-market or processing potatoes, potato producers rely upon different potato cultivars to meet market and consumer demands. Many cultivars possess distinctive traits which make them more or less susceptible to disease and insect pressure. One important and understudied trait that may confer host location preference and population performance include leaf fatty acid composition(s). It is known that leaf fatty acid composition can influence growth, taste, and even insect defense mechanisms. In the current investigation we examined the fatty acid composition of leaf tissue obtained from 8 commercial potato cultivars representing different market classes grown in a controlled field study. We examined colonization preference of Leptinotarsa decemlineata among the 8 different potato cultivars over a 45 day period representing the first full generation in Wisconsin. Results of these experiments suggest, i) that fatty acid compositions in leaf tissue vary between potato cultivars and among sample dates throughout the experiment, ii) that Leptinotarsa decemlineata may preferentially colonize particular potato cultivars, and iii) that there was a significant correlation between omega-3 fatty acid composition in leaf tissue and Leptinotarsa decemlineata cultivar preference.

商品马铃薯（马铃薯）的生产) 用于不同的市场类别在美国具有至关重要的农业重要性。对于薯片、新鲜马铃薯或加工马铃薯的生产，马铃薯生产商依靠不同的马铃薯品种来满足市场和消费者的需求。许多品种具有独特的性状，使它们或多或少容易受到疾病和昆虫压力的影响。一种可能赋予宿主位置偏好和种群性能的重要且未被研究的性状包括叶脂肪酸组成。众所周知，叶脂肪酸组成可以影响生长、味道，甚至昆虫防御机制。在目前的调查中，我们检查了从 8 个商业马铃薯品种中获得的叶组织的脂肪酸组成，这些品种代表了在受控田间研究中种植的不同市场类别。我们检查了殖民偏好Leptinotarsa decemlineata在 45 天的 8 种不同马铃薯品种中代表威斯康星州第一代完整的马铃薯品种。这些实验的结果表明，i) 在整个实验过程中，马铃薯品种和采样日期之间叶组织中的脂肪酸组成不同，ii) Leptinotarsa decemlineata可能优先定殖特定马铃薯品种，以及 iii) 欧米茄之间存在显着相关性。叶组织中的-3脂肪酸组成与Leptinotarsa decemlineata品种偏好。