SHELL WARS .2. THE INFLUENCE OF RELATIVE SIZE ON DECISIONS MADE DURING HERMIT CRAB SHELL FIGHTS
SHELL WARS .2. THE INFLUENCE OF RELATIVE SIZE ON DECISIONS MADE DURING HERMIT CRAB SHELL FIGHTS
复制标题
DOI：
10.1016/s0003-3472(85)80088-9
复制
发表时间：
1985-01-01
期刊：
影响因子：
2.5
通讯作者：
ELWOOD, RW
中科院分区：
文献类型：
--
作者：
DOWDS, BM;ELWOOD, RW
在寄居蟹的斗争中，有争议的资源（贝壳）的价值取决于螃蟹的大小相对于资源的大小。因此，当相对参赛者的大小是主要的实验变量，与壳大小相关的动机因素也将是一个实验问题。描述了两个实验，一起克服这个问题。螃蟹的相对大小影响了贝壳战斗的所有阶段，包括战斗前的展示、升级、驱逐和维克托在驱逐失败者之前和之后对失败者的贝壳的检查。大小相近的动物之间比大小相近的动物之间更常发生贝壳战。最近的理论（Maynard-Smith和帕克，1976）的这种明显矛盾可能是由于没有外壳的成本很高，而且导致战斗升级的可能性很小。蟹的相对大小影响资源评估所需的时间，因此这些评估的有效性也可能受到影响。本文描述了影响贝壳打斗中每个重大决定的因果因素，尽管这些打斗比大多数打斗更复杂，但它们总体上与动物竞赛理论一致。
The value of contested resources (shells) in hermit crab fights depends on the sizes of the crabs relative to the sizes of the resources. Thus, when relative contestant size is the main experimental variable, motivational factors associated with shell size will also be an experimental problem. Two experiments are described that together overcome this problem. Relative crab size influences all stages of shell fights including pre-fight display, escalation, eviction and examination of the opponent''s shell by the victor both before and after eviction of the loser. Shell fights occur more often between disparately-sized animals than between those similar in size. This apparent contradiction of recent theory (Maynard-Smith and Parker 1976) is probably due to the high cost of being without a shell and the small chance that an escalated fight will result. Relative crab size influences the time taken in resource assessments and thus the effectiveness of these assessments is also probably influenced. Causal factors influencing each of the major decisions in shell fights are described and although these fights are more complex than most they are in general agreement with theory on animal contests.