Two types of orienting behaviour during agaonistic encounters in the crayfish Procambarus clarkii (Decapoda:Cambaridae)
Two types of orienting behaviour during agaonistic encounters in the crayfish Procambarus clarkii (Decapoda:Cambaridae)
复制标题
克氏原螯虾（十足目：螯虾科）在竞争性遭遇中的两种定向行为
DOI：
10.1163/1937240x-00002411
复制
发表时间：
2016
影响因子：
1.1
通讯作者：
Minami Hiroki and Nagayama Toshiki
中科院分区：
文献类型：
--
作者：
Watanabe Susumu;Momohara Yuto;Minami Hiroki and Nagayama Toshiki
克氏原螯虾是一种领地性动物。当两个雄性个体在同一个水箱中配对时，在几次冲突后确定了支配和从属关系。在优势秩序建立之前，两个个体相互接近，接触和战斗。在优势秩序建立后，优势个体主要攻击从属个体，而从属个体则以撤退或甩尾作为反应。通过视频分析比较优势个体的两种定向行为，发现攻击时的追逐速度明显快于接近速度，且个体在攻击过程中表现出抬高的姿态。在攻击中，占优势的小龙虾在靠近对手个体时会伸展腹部。此外，优势个体在腕足和半腕足的连接处抬起它们的螯足，以威胁从属个体。这些结果提供了一个初步的方法来了解神经开关机制，小龙虾感知时，成为占主导地位的争斗。
The crayfishProcambarus clarkiiis a territorial animal. When two male individuals are paired in the same tank, a dominant and subordinate relationship is determined after several conflicts. Before the establishment of dominance order, both individuals approached each other to contact and fight. After establishment of dominance order, dominant individuals predominantly attack subordinate individuals whereas subordinate individuals respond with either a retreat or tailflip. By comparing two orienting behaviours of the dominant individuals using video analysis, we found that the chasing speed of attack was considerably faster than that of approach, and individuals exhibited a raised position during the attack. In attack, dominant crayfish extend the abdomen as they close into opponent individuals. Furthermore, dominant individuals raise their chelipeds at the joint between the carpopodite and meropodite to threaten subordinate individuals. These results provide an initial approach to understand the neural switching mechanism that crayfish perceive when becoming dominant during agonistic bouts.