CHEMOSENSORY BASES OF FOOD-FINDING AND FEEDING IN APLYSIA JULIANA (MOLLUSCA, OPISTHOBRANCHIA)
CHEMOSENSORY BASES OF FOOD-FINDING AND FEEDING IN APLYSIA JULIANA (MOLLUSCA, OPISTHOBRANCHIA)
复制标题
海兔（软体动物、后鳃亚纲）寻食和摄食的化学感觉基础
DOI：
10.2307/1539550
复制
发表时间：
1965
期刊：
影响因子：
--
通讯作者：
Carl Frings
中科院分区：
文献类型：
--
作者：
H. Frings;Carl Frings
海兔，Aaprosia juliana，当饥饿时，会被它们的正常食物石莼（Ulva lactuca）唤醒并定向活动。同样的反应发生时，动物受到刺激的海水中，石莼已经站了几分钟。由石莼释放的物质是不挥发的，热稳定的，并且在乙醚萃取后保留在水馏分中。这种物质的感受器，当它在唤醒和定向中起作用时，在触手上，但不在触角上。当含有石莼的海水被滴到一只无尾两栖动物的嘴上时，这种动物开始进食活动。刺激物质在非常低的浓度下起作用，并且具有强烈的兴奋性。通常，这些石莼只吃石莼末端的薄部分，而留下粗糙的基部，这些基部会产生新的叶片。这可能是由于在基地的情况下的诱食剂。因此，动物不会消灭石莼，即使它们数量非常多，它们的食物供应也因此得以维持。
Sea-hares, Aplysia juliana, when hungry, are aroused to activity by and oriented toward Ulva lactuca, their normal food. The same response occurs when the animals are stimulated by sea water in which Ulva has stood for a few minutes. The material given off by the Ulva is non-volatile, heat-stable, and remains in the water fraction after ether extraction. The receptors for this substance, when it acts in arousal and orientation, are on the tentacles, but not on the rhinophores. When sea water in which Ulva has stood is dropped onto the mouth of an aplysia, the animal starts feeding activity. The stimulating material acts at very low concentrations and is strongly excitatory. Normally these aplysias eat only the terminal thin parts of Ulva and leave the coarser bases which produce new blades. This may be due to the absence of phagostimulant in the bases. The animals therefore do not eliminate the Ulva, even when they are very numerous, and their food supply is thus maintained.