Divergent evolutionary pathways for aggression and territoriality in Astyanax cavefish
Divergent evolutionary pathways for aggression and territoriality in Astyanax cavefish
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DOI：
10.3897/subtbiol.43.79318
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发表时间：
2022-07-15
影响因子：
1.1
通讯作者：
Rutkowski, Jennifer
中科院分区：
文献类型：
--
作者：
Espinasa, Luis;Collins, Emily;Rutkowski, Jennifer
墨西哥四乐鱼（Astyanax mexicanus）的表面形态表现出强烈的领土行为和高度的攻击性。相比之下，来自墨西哥塞拉德埃尔阿布拉的无眼洞穴适应型很少具有攻击性，并且完全失去了领土行为。这些行为是洞穴鱼行为综合症的一部分。在这里，我们报告了危地马拉山脉的几个Astyanax洞穴种群，与那些报道的塞拉德埃尔阿布拉洞穴种群不同，当被限制在一个缩小的空间中时，它们表现出显著的领土性和攻击性。我们讨论了不同的进化轨迹，在竞争行为方面的洞穴鱼种群居住在不同的山脉。
The surface morph of the Mexican tetra fish (Astyanax mexicanus) exhibits strong territoriality behavior and high levels of aggression. In contrast, the eyeless cave-adapted morph from Sierra de El Abra, Mexico, rarely are aggressive and have totally lost the territorial behavior. These behaviors are part of what has been called the cavefish behavioral syndrome. Here, we report that several Astyanax cave populations of Sierra de Guatemala, unlike those reported for the Sierra de El Abra cave populations, display significant territoriality and aggression when confined into a reduced space. We discuss divergent evolutionary trajectories in terms of agonistic behavior for cavefish populations inhabiting different mountain ranges.