Ziv I, Botzer D, Markovich S, Susswein A J
Department of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel.
Behav Neural Biol. 1991 Jan;55(1):108-13. doi: 10.1016/0163-1047(91)80130-7.
The presence of other Aplysia in the environment increases the time spent feeding. This finding is consistent with the hypothesis that a common arousal mechanism modulates feeding and reproductive behaviors. The arousal level is presumably increased by pheromones released by additional animals.