A GAME THEORETICAL INTERPRETATION OF MALE COMBAT IN THE BOWL AND DOILY SPIDER (FRONTINELLA-PYRAMITELA)
A GAME THEORETICAL INTERPRETATION OF MALE COMBAT IN THE BOWL AND DOILY SPIDER (FRONTINELLA-PYRAMITELA)
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DOI：
10.1016/s0003-3472(83)80173-0
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发表时间：
1983-01-01
期刊：
影响因子：
2.5
通讯作者：
AUSTAD, SN
中科院分区：
文献类型：
--
作者：
AUSTAD, SN
雄性碗蛛和垫蛛（Frontinella spermitela：Linyphiidae）为争夺成年雌性而争斗。在这些比赛中，残疾或致命伤害的概率是其持续时间的线性函数。因此，这场战斗非常符合博弈论消耗战的假设。因为精子竞争的细节是已知的，所以在交配的任何阶段，雌性对交配雄性或入侵者的价值（预期的受精卵数量）都可以量化。消耗战模型的预测进行了严格审查的实验操作的战斗能力和女性价值的网站居民和入侵者。当女性的价值是平等的战斗，赢得战斗的能力与身体大小和比赛的持续时间呈负相关的大小差异。特定体型差异的男性获胜率与女性价值直接相关。受伤和死亡比例最高的治疗是那些较小的居民保护一个有价值的女性的治疗。在2个处理中，较大的网络居民争夺低价值的女性，模型的预测不支持。然而，对处理的定量分析表明，这些明显异常的结果与模型是雅阁的。
Male bowl and doily spiders (Frontinella pyramitela: Linyphiidae) fight over access to adult females. The probability of disablement or fatal injury in these contests is a linear function of their duration. Thus, the fights fit closely the assumptions of a version of the game theory war of attrition. Because the details of sperm competition are known, female value (expected number of eggs fertilized) to either a copulating male or an intruder can be quantified for any stage of copulation. The predictions of the war of attrition model were critically examined by experimental manipulation of fighting ability and female value for both web residents and intruders. When female value was equal for both combatants, the ability to win fights was correlated with body size and the duration of contests was inversely correlated with size difference. The winning percentage of males of specific size differences varied directly with female value. The treatments with the highest percentage of injuries and fatalities were those in which a smaller resident was defending a female of great value. In 2 treatments in which larger web residents were contesting for females of low value, the predictions of the model were not supported. However, a quantitative analysis of the treatments shows that these apparently anomalous results are in accord with the model.