While trapping methods for Drosophila suzukii Matsumura (Diptera: Drosophilidae) have typically relied on fermentation volatiles alone or in association with a visual stimulus, the relative contribution of visual and olfactory stimuli to the food- and host-seeking behavior of D. suzukii is poorly understood. This study quantified the type of response exhibited by male and female D. suzukii to color and the effects that volatiles (fermentation, fresh fruit, and leaf) exert on the outcome. Seven-, four- and two-choice assays were used to quantify interactions between visual and olfactory cues. When no volatiles were present in a seven-choice assay, D. suzukii preferred red, black, and green pigments. Black and red were preferred when yeast odors were present, and black alone was the most attractive color when blueberry odor was present. A strawberry leaf terpenoid, β-cyclocitral, seemed to have overridden the flies' response to color. In four-choice assays, blueberry odor was more likely to interact synergistically with color than yeast or β-cyclocitral. This study demonstrates that D. suzukii modulates the response to multimodal sensory modalities (vision and olfaction) depending, to some extent, on the type of olfactory stimuli. Our findings also provide insight into the relative importance of vision as a function of odor quality in this invasive species.

中文翻译：

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来自宿主和非宿主植物气味的嗅觉提示影响成年果蝇铃木（双翅目：果蝇科）对视觉提示的行为反应。

铃木果蝇的诱捕方法通常依靠单独的发酵挥发物或与视觉刺激有关的发酵挥发物，但视觉和嗅觉刺激对铃木D.的食物和宿主寻求行为的相对贡献却很差。了解。这项研究量化了雄性和雌性铃木D.表现出的对颜色的反应类型以及挥发物（发酵，新鲜水果和叶子）对结果的影响。七选择法，四选择法和二选择法用于量化视觉提示和嗅觉提示之间的相互作用。当在七选择法分析中不存在挥发物时，铃木D.首选红色，黑色和绿色颜料。当存在酵母味时，黑色和红色是优选的，而当存在蓝莓味时，黑色是最吸引人的颜色。草莓叶片的类萜，β-cyclocitral，似乎已经覆盖了果蝇对颜色的反应。在四项选择分析中，蓝莓味比酵母或β-cyclocitral更有可能与颜色协同作用。这项研究表明，铃木D.在某种程度上取决于嗅觉刺激的类型来调节对多峰感觉模式（视觉和嗅觉）的反应。我们的发现还提供了对于这种入侵物种中视觉相对于气味质量的相对重要性的见解。铃木在某种程度上取决于嗅觉刺激的类型，调节对多模态感觉模态（视觉和嗅觉）的反应。我们的发现还提供了对于这种入侵物种中视觉相对于气味质量的相对重要性的见解。铃木在某种程度上取决于嗅觉刺激的类型，调节对多模态感觉模态（视觉和嗅觉）的反应。我们的发现还提供了对于这种入侵物种中视觉相对于气味质量的相对重要性的见解。