THE TIMING OF DECISIONS DURING SHELL INVESTIGATION BY THE HERMIT CRAB, PAGURUS-BERNHARDUS
THE TIMING OF DECISIONS DURING SHELL INVESTIGATION BY THE HERMIT CRAB, PAGURUS-BERNHARDUS
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DOI：
10.1016/s0003-3472(85)80086-5
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发表时间：
1985-01-01
期刊：
影响因子：
2.5
通讯作者：
STEWART, A
中科院分区：
文献类型：
--
作者：
ELWOOD, RW;STEWART, A
通过系统地改变所拥有的贝壳的大小和提供的贝壳的大小，研究了影响寄居蟹决定是否接近、调查和进入另一个贝壳的因素。螃蟹接近或进入贝壳的概率取决于这两个变量。然而，接触后的调查只取决于拥有的炮弹的大小。序列中每个阶段的持续时间与执行下一阶段的每个试验组中的螃蟹数量呈负相关。对于最后的孔径调查活动序列，进入提供的贝壳的螃蟹越少，这些螃蟹进行的调查行为的数量就越多。除了行为次数和调查持续时间的不同外，附件的具体使用也因实验情况而异。因此，裸蟹使用次要的龟类来研究贝壳，而不是通常被安置的螃蟹使用的主要的龟类，而主要的龟类被裸蟹保留用于防御。在信息收集和根据这些信息作出决定方面对这些数据进行了讨论。
Factors which influence decisions by hermit crabs concerning whether to approach, investigate and enter another shell were investigated by systematically varying the size of the shell in possession and the size of the shell being offered. The probability that a crab will approach or enter the shell depends on both variables. Investigation after contact, however, depends only on the size of the shell in possession. Durations of each stage of the sequence are negatively correlated with the numbers of crabs in each experimental group performing the next stage. For the final sequence of aperture investigatory activities, the fewer crabs entering the offered shell, the greater the number of investigatory acts performed by those crabs. In addition to variation in number of acts and duration of investigation, specific use of appendages varies according to the experimental situation. Thus, naked crabs use the minor cheliped to investigate shells in preference to the major cheliped, which is normally used by housed crabs, with the major cheliped being reserved for defence by naked crabs. These data are discussed in terms of information collection and decisions made on the basis of that information.