Schivell Amanda E, Wang Samuel S-H, Thompson Stuart H
Department of Biological Sciences and the Hopkins Marine Station, Stanford University, Pacific Grove, California 93950.
Biol Bull. 1997 Jun 1;192(3):418-425. doi: 10.2307/1542751.
Stochastic analysis was applied to observations of spontaneous behavior in the carnivorous mollusc Melibe leonina. Six behaviors were denned that could be easily recognized on inspection and it was found that transitions between each of these behaviors could be fully described by a first-order random process without memory of past behavioral choices. The behaviors are organized by frequency of transition into two modes, a feeding mode and a resting mode. Transitions within modes are more likely than transitions between modes, and the feeding and resting modes are linked by a preferred pair of behavioral transitions. The amount of time spent in the feeding mode is positively correlated with body size, but the average length of a feeding episode is independent of size. This suggests that body size regulates the probability of entry into feeding behavior but does not influence the basic pattern of feeding. In the presence of food the animals express nearly continuous feeding behavior, suggesting that food reduces the probability of exiting the feeding mode. This model of spontaneous behavior in Melibe is used to form hypotheses amenable to further exploration through neurophysiological experiments.
随机分析应用于肉食性软体动物狮子海蛞蝓（Melibe leonina）自发行为的观察。定义了六种行为，这些行为在检查时很容易识别，并且发现这些行为之间的转换可以用一个无过去行为选择记忆的一阶随机过程来完全描述。这些行为按转换频率分为两种模式，进食模式和休息模式。模式内的转换比模式间的转换更有可能发生，并且进食和休息模式通过一对优先的行为转换相联系。在进食模式下花费的时间与体型呈正相关，但进食事件的平均长度与体型无关。这表明体型调节进入进食行为的概率，但不影响进食的基本模式。在有食物的情况下，动物表现出几乎持续的进食行为，这表明食物降低了退出进食模式的概率。狮子海蛞蝓这种自发行为模型用于形成可通过神经生理学实验进一步探索的假设。
