Department of Environmental and Mathematical Sciences, Graduate School of Environmental Science, Okayama University, Tsushima-Naka 3-1-1, Okayama, 700-8530, Japan.
J Biol Dyn. 2010 May;4(3):270-81. doi: 10.1080/17513750903161036.
In male broad-horned flour beetles, Gnatocerus cornutus, losers of conflicts avoid fighting at subsequent encounters. The loser effect lasts for 4 days. It is considered that the memory of losing remains for 4 days. The duration of the memory is expected to affect the fitness, and the duration, 4 days, is expected to be optimal. We consider the fitness of a mutant in an homogeneous population to obtain the optimal duration. Here we carry out simulations using an individual-based model. The results suggest that the trade-off of getting mating chances and avoiding damage can cause the optimal duration of the memory, and that the decay in time of the female population is an important factor.
在雄性广角面粉甲虫（Gnatocerus cornutus）中，战败者在随后的遭遇中避免战斗。失败者效应持续 4 天。据认为，失败的记忆会持续 4 天。记忆的持续时间预计会影响适应性，而 4 天的持续时间预计是最佳的。我们考虑在同质群体中的突变体的适应性来获得最佳的持续时间。在这里，我们使用基于个体的模型进行模拟。结果表明，获得交配机会和避免伤害的权衡会导致记忆的最佳持续时间，而雌性群体的时间衰减是一个重要因素。
