Fish lateral system is required for accurate control of shoaling behaviour
Fish lateral system is required for accurate control of shoaling behaviour
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DOI：
10.1016/j.anbehav.2009.12.020
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发表时间：
2010-03-01
期刊：
影响因子：
2.5
通讯作者：
Vandewalle, Pierre
中科院分区：
文献类型：
--
作者：
Faucher, Karine;Parmentier, Eric;Vandewalle, Pierre
在硬骨鱼，横向系统被认为有助于，除其他角色外，保持学校的行为。视觉也被认为在学校教育中发挥作用，因为侧线被切断的鱼不会停止学校教育，除非它们也失明。然而，这一结论是基于只有躯干侧线失活，而头侧系统保持完整的实验。我们研究了整个侧系统的失活如何影响鱼类浅滩行为。在用氨基糖苷类抗生素灭活其整个外侧系统之前和之后（以及假处理的标本），对火头四头虫、Hemigrammus bleheri组进行录像。浅水行为的特点是最近距离的第一，第二和第三邻居，浅滩半径，浅滩序参数和个人之间的碰撞次数。扫描电子显微镜观察显示，抗生素治疗的结果，大多数浅表神经瘤的损害。更重要的是，经杀虫剂处理的鱼无法维持鱼群。然而，在治疗结束后，它们在大约一个月内恢复了正常的组织形态和正常的浅水行为。因此，横向系统比以前认为的更重要的浅水行为。(C)2009年，动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
In teleost fishes, the lateral system is assumed to contribute, among other roles, to maintaining schooling behaviour. Sight is also assumed to play a role in schooling, as fish with a cut lateral line do not stop schooling unless they are also blinded. This conclusion, however, is based on experiments where only the trunk lateral line was inactivated, leaving the head lateral system intact. We investigated how inactivation of the whole lateral system affects fish shoaling behaviour. Groups of firehead tetras, Hemigrammus bleheri, were videorecorded before and after inactivation of their whole lateral system with aminoglycoside antibiotics (and also in sham-treated specimens). Shoaling behaviour was characterized by nearest distance to the first, second and third neighbours, shoal radius, shoal order parameter and the number of collisions between individuals. Scanning electron microscope observations showed damage to most superficial neuromasts as a result of antibiotic treatment. Importantly, the antibiotic-treated fish proved unable to maintain a shoal. After the end of the treatment, however, they recovered both a normal tissue morphology and normal shoaling behaviour within about a month. The lateral system is thus more crucial to shoaling behaviour than previously believed. (C) 2009 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.