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What factors govern the occurrence of highly developed territorial behavior termed barricade building in Ilyoplax pusilla (Crustacea ; Brachyura)?

哪些因素控制 Ilyoplax pusilla（甲壳纲；Brachyura）高度发达的领土行为（称为路障构建）的发生？

基本信息

批准号：
14540578
负责人：
WADA Keiji
金额：
$ 2.24万
依托单位：
Nara Women's University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540578/
关键词：
animal ecology mathematical ecology social behavior territory invertebrate brachyuran crab tidal flat game model 海洋生物

项目摘要

Factors governing the occurrence of unique territorial behavior termed barricade building by the brachyuran crab Ilyoplax pusilla (family Dotilllidae) living on tidal flat, have been explored for the following aspects.1.Influence of external factors on frequency of barricade buildingThe frequency of barricade building increased in the breeding season, but was not correlated with the tidal regime. The frequency was also not related with the population density or with difference of the substratum condition.2.Relationship of barricade building with mating successComparison of occurrence of barricade building between pairing males and non-pairing males revealed that the former made barricade building more frequently than the latter. This finding suggests that barricade functions advantageously for pair formation.3.Interspecific comparison of earthen-structure avoiding tendencyComparison of response to artificial earthen structure between Ilyoplax pusilla and other two dotillid species with … More out barricade building behavior, revealed that I.pusilla less frequently broke the structure or avoided it more frequently than the other two species.4.Model constructionIn one model, three strategies each for barricader (build, do not build, build to smaller) and barricadee (destroy, do not destroy, destroy to smaller) are assigned, and the evolutionary dynamics of their frequency has been investigated. The model shows that cost by barricade should be frequency dependent to explain why only part of population members build barricades. However, the equilibrium is only neutrally stable and random genetic drift should turn the system with no barricade. Introduction of frequency depended strategy, destroy barricade depending on their frequency, made the equilibrium with intermediate barricade frequency stable. In the other model, life history strategies have been investigated by dynamic programming method. In ESS, barricade is built only in the breeding season, which coincides with field data Less

生活在滩涂上的短蟹Ilyoplax pusilla (Dotilllidae科)独特的领地行为——筑垒行为的发生，主要从以下几个方面进行了探讨。1.外部因素对筑垒频率的影响繁殖季节筑垒频率增加，但与潮汐情况无关。其频率也与种群密度和基质条件的差异无关。2.筑垒与交配成功的关系通过对配对雄性和非交配雄性筑垒发生的比较发现,前者筑垒的频率高于后者。这一发现表明，路障功能有利于配对形成。3.土结构回避倾向的种间比较Ilyoplax pusilla 和其他两种具有路障建筑行为的点状物种对人工土结构的反应进行比较，表明 I.pusilla 比其他两个物种更不频繁地破坏结构或更频繁地避免结构。4.模型构建在一个模型中，每种策略都有三种策略分配barricader（建造、不建造、建造更小）和barricadee（摧毁、不摧毁、摧毁更小），并研究了它们频率的进化动态。该模型表明，路障成本应该与频率相关，以解释为什么只有部分人口成员建造路障。然而，平衡只是中性稳定的，随机遗传漂移应该让系统变得没有路障。引入频率依赖策略，根据路障的频率摧毁路障，使中路障频率的平衡稳定。在另一个模型中，通过动态规划方法研究了生活史策略。在ESS中，路障仅在繁殖季节建造，这与现场数据一致 Less