Darmaillacq Anne-Sophie, Chichery Raymond, Poirier Roseline, Dickel Ludovic
Laboratoire de Psychophysiologie, Université de Caen, Caen, France.
Dev Psychobiol. 2004 Dec;45(4):239-44. doi: 10.1002/dev.20034.
Food preferences were investigated in cuttlefish during the first 3 months' posthatching, using choice tests between crabs, shrimps, and young fish. The results showed that without previous feeding experience, cuttlefish preferred shrimps on Day 3. This suggests an innate food preference; however, it was possible to induce a preference for an originally nonpreferred prey item in 3-day-old and naïve cuttlefish, demonstrating the flexibility of this initial behavioral preference in response to previous individual experience. This preference suggests a learning process involving a form of long-term memory, demonstrated for the first time in juvenile cuttlefish. Until Day 30, juvenile cuttlefish fed exclusively shrimps chose shrimps. This preference probably depends on their previous feeding experience. Finally, it appears that from Day 60, cuttlefish reared on the same restricted diet have a tendency to switch their preference to novel prey items, which diversify their diet.
在孵化后的前3个月，通过对螃蟹、虾和幼鱼进行选择测试，研究了乌贼的食物偏好。结果表明，在没有先前摄食经验的情况下，乌贼在第3天更喜欢虾。这表明存在一种先天的食物偏好；然而，有可能在3日龄且未接触过食物的乌贼中诱导出对原本不喜欢的猎物的偏好，这表明这种初始行为偏好会根据先前的个体经验而具有灵活性。这种偏好表明存在一个涉及某种长期记忆形式的学习过程，这在幼年乌贼中首次得到证明。直到第30天，只喂食虾的幼年乌贼会选择虾。这种偏好可能取决于它们先前的摄食经验。最后，似乎从第60天起，以相同受限饮食饲养的乌贼倾向于将其偏好转向新的猎物，从而使它们的饮食多样化。
