Lateral asymmetries during escape behavior in a species of teleost fish (Jenynsia lineata)
Lateral asymmetries during escape behavior in a species of teleost fish (Jenynsia lineata)
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DOI：
10.1016/s0031-9384(96)00308-3
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发表时间：
1997-01-01
影响因子：
2.9
通讯作者：
Vallortigara, G
中科院分区：
文献类型：
--
作者：
Bisazza, A;Cantalupo, C;Vallortigara, G
报道了一种硬骨鱼在逃跑行为中转向方向的侧向不对称。当面对模拟捕食者的视觉图像时，大约有一半的个体表现出向右或向左的明显偏见，并且当同一条鱼在一个月后重新测试时，这种不对称性倾向于保留。我们测量了一些形态特征（胸鳍、自然排鳞片、眶上孔、眼前孔和后孔），以检查行为不对称的程度是否与环境应激或杂合子减少引起的形态波动不对称相关。结果表明并非如此。讨论了这些结果在个体和群体水平上解释行为偏侧化的意义。版权所有爱思唯尔科学有限公司
Lateral asymmetries in the direction of turning during escape behavior in a species of teleost fish, Jenynsia lineata, are reported. When faced with the visual image of a simulated predator, approximately half of the individuals exhibited a significant bias to turn rightwards or leftwards, and the asymmetry tended to be retained when the same fish were retested 1 month later. Some morphological characters (pectoral fin rays, scales in natural row, supraorbital, preopercular, and postotic pores) were measured to check whether the degree of behavioral asymmetry was correlated with morphological fluctuating asymmetries associated with environmental stress or reduced heterozygosis. The results showed that it was not. The implications of these results for the interpretation of behavioral lateralization at the individual and population level are discussed. Copyright (C) 1996 Elsevier Science Inc.