Enhancement of habituation during escape swimming in starved crayfish
Enhancement of habituation during escape swimming in starved crayfish
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饥饿小龙虾逃逸游泳过程中习惯的增强
DOI：
10.1007/s00359-018-1298-5
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Nagayama Toshiki
中科院分区：
文献类型：
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作者：
Kato Nozomi;Fujiyama Naoyuki;Nagayama Toshiki
喂养对于满足动物的即时能量需求是很重要的，饥饿的动物必须消耗能量去获取食物，而不顾被捕食的危险。小龙虾通过翻动尾巴来逃避捕食者的攻击，在对吻侧刺激的反应中，小龙虾在最初快速弯曲腹部后表现出向后逃避游泳的行为。由于尾翼翻转是一种消耗能量的行为，如果通过习惯化反复施加刺激，尾翼翻转的发生就会减少。在这项研究中，我们比较了喂食和饥饿小龙虾的这种习惯过程。我们发现，在饥饿的动物中，与喂食的动物相比，习惯化得到了增强。在实验罐中放置食物进一步增强了饥饿动物的习惯化。因此，饥饿的小龙虾在节省能量和被捕食的风险之间做出了权衡。
Feeding is important to supply the immediate energy needs of animals and starved animals must expend energy in attempting to acquire foods irrespective of the danger of predation risk. Crayfish escape from attack of predators by tailflipping and in response to rostral stimuli crayfish show backward escape swimming following an initial rapid flexion of the abdomen. Since the tailflip is an energetically costly behaviour, the occurrence of a tailflip diminishes if a stimulus is repeatedly applied through habituation. In this study, we have compared the process of this habituation between fed and starved crayfish. We found that in starved animals habituation was enhanced compared to fed animals. The presence of food in the experimental tanks further enhanced habituation of starved animals. Starved crayfish thus showed trade-offs between energy saving and predation risk.