Historical effect in the territoriality of ayu fish
Historical effect in the territoriality of ayu fish
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DOI：
10.1016/j.jtbi.2010.09.040
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发表时间：
2011-01-07
影响因子：
2
通讯作者：
Tainaka, Kei-ichi
中科院分区：
文献类型：
--
作者：
Tanaka, Yumi;Iguchi, Kei'ichiro;Tainaka, Kei-ichi
在非繁殖（生长）季节，阿育鱼在河流中形成藻类觅食区。我们建立了一个成本效益理论来描述领土的分解和形成。在生长季节的早期，所有的鱼都以低密度占据地盘。一旦所有的领地都被占领，多余的鱼就会变成漂浮物。当鱼的密度进一步增加时，就会发生一个相变：所有的领地突然被打破，鱼形成了一个鱼群。相反，当鱼类密度下降时，鱼群突然形成了领地。理论和实验都表明，ayu应该表现出一种历史效应：领土的破坏和形成过程有很大的不同。特别是，信息过程理论预测了一种特定的鱼类行为：在领土形成之前，出现了一个试图占有小领土的“企图领土持有者”。(C) 2010 Elsevier Ltd.版权所有。
Ayu fish form algae-feeding territories in a river during a non-breeding (growing) season. We build a cost-benefit theory to describe the breakdown and formation of territory. In the early stage of a growing season, all fish hold territories at low densities. Once all territory sites are occupied, excess fish become floaters. When fish density further increases, a phase transition occurs: all the territories suddenly break down and fish form a school. In contrast, when the fish density is decreased, territories are suddenly formed from the school. Both theory and experiments demonstrate that ayu should exhibit a historical effect: the breakdown and formation processes of territory are largely different. In particular, the theory in formation process predicts a specific fish behavior: an "attempted territory holder" that tries to have a small territory emerges just before the formation of territory. (C) 2010 Elsevier Ltd. All rights reserved.