SHELL WARS - ASSESSMENT STRATEGIES AND THE TIMING OF DECISIONS IN HERMIT CRAB SHELL FIGHTS
SHELL WARS - ASSESSMENT STRATEGIES AND THE TIMING OF DECISIONS IN HERMIT CRAB SHELL FIGHTS
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DOI：
10.1163/156853983x00011
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发表时间：
1983-01-01
期刊：
影响因子：
1.3
通讯作者：
ELWOOD, RW
中科院分区：
文献类型：
--
作者：
DOWDS, BM;ELWOOD, RW
在实验条件下观察了寄居蟹P.bernhardus的斗壳行为。蟹类的相对大小和较大蟹类的壳质影响了发生打壳的概率。这两个因素沿着小螃蟹壳的质量影响了发生升级战斗的可能性。在炮弹战斗中，攻击者能够吸收关于防御者的炮弹的信息，将其与拥有的炮弹进行比较，并决定是否驱逐防御者并进行炮弹更换。攻击者评估敌方炮弹的时间受到攻击者自身炮弹质量和区分两种炮弹质量的难易程度的影响。在某些情况下，决策比其他情况容易。防御蟹无法获得攻击者的外壳信息，因此只能估计自己的外壳质量。螃蟹们所经历的这种信息不对称，使得攻击者决定了一场贝壳大战的结果。
The shell fighting behavior of the hermit crab P. bernhardus was observed under experimental conditions. The relative sizes of the crabs and shell quality of the larger crab influenced the probability of occurrence of a shell fight. These 2 factors along with the quality of the smaller crab''s shell influenced the probability of an escalated fight occurring. During a shell fight, the attacker was able to assimilate information concerning the defender''s shell, to compare it with the shell in possession and decide whether or not to evict the defender and effect a shell changes. The time that the attacker took in assessment of the opponent''s shell was influenced by the quality of the attacker''s own shell and the ease of discrimination between the qualities of the 2 shells. Decisions were easier in some instances than in others. The defending crab did not have access to information about the attacker''s shell and therefore could only estimate the quality of its own shell. This asymmetry of information experienced by the crabs that the attacker decided the outcome of a shell fight.