The Pacific white shrimp, Litopenaeus vannamei, is important as the principal species in the worldwide aquaculture of shrimp. It has also become a model in the study of crustacean biology, especially because it is one of the first decapod crustaceans to have its genome sequenced. This study examined an aspect of the sensory biology of this shrimp that is important in its aquaculture, by describing its peripheral chemical sensors and how they are used in acquiring and consuming food pellets. We used scanning electron microscopy to describe the diversity of sensilla on the shrimp’s major chemosensory organs: antennules, antennae, mouthparts, and legs. Using behavioral studies on animals with selective sensory ablations, we then explored the roles that these chemosensory organs play in the shrimp’s search for, and acquisition and ingestion of, food pellets. We found that the antennules mediate odor-activated searching for pellets, with both the lateral and medial antennular flagella contributing to this behavior and thus demonstrating that both aesthetasc (olfactory) and distributed chemosensors on the antennules can mediate this behavior. Once the shrimp finds and grasps the food pellet, the antennular chemoreceptors no longer play a role, and then the chemoreceptors on the mouthparts and legs control ingestion of the pellets. This sequence of chemosensory control of feeding in L. vannamei, a dendrobranchiate crustacean with small antennules and an ability to live and feed in both benthic and pelagic environments, is generally similar to that of the better-studied, large-antennuled, benthic reptantian crustaceans, including spiny lobsters (Achelata), clawed lobsters and crayfish (Astacidea), and crabs (Meirua).

中文翻译：

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南美白对虾摄食行为的化学感应基础

南美白对虾（Litopenaeus vannamei）是世界范围内对虾养殖的主要品种。它也成为甲壳类生物学研究的一个模型，特别是因为它是第一个对其基因组进行测序的十足目甲壳类动物之一。这项研究通过描述其外围化学传感器以及它们如何用于获取和消耗食物颗粒，检查了这种虾的感官生物学的一个方面，这对其水产养殖很重要。我们使用扫描电子显微镜来描述虾的主要化学感受器官上感受器的多样性：触角、触角、口器和腿。通过对具有选择性感觉消融的动物的行为研究，我们随后探索了这些化学感觉器官在虾寻找、获取和摄取、食物颗粒。我们发现触角介导气味激活搜索颗粒，外侧和内侧触角鞭毛都有助于这种行为，因此证明触角上的美学（嗅觉）和分布式化学传感器都可以调节这种行为。一旦虾找到并抓住食物颗粒，触角化学感受器就不再起作用，然后口器和腿上的化学感受器控制颗粒的摄取。南美白对虾是一种具有小触角并能够在底栖和远洋环境中生活和觅食的树状鳃类甲壳类动物，这种化学感应控制的摄食序列通常与研究较好的大触须、底栖爬虫类甲壳类动物的摄食顺序相似。 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ，包括刺龙虾（Achelata），