CONSISTENCY OF INDIVIDUAL-DIFFERENCES IN ANTIPREDATOR BEHAVIOR AND COLOR PATTERN IN THE GARTER SNAKE, THAMNOPHIS-ORDINOIDES
CONSISTENCY OF INDIVIDUAL-DIFFERENCES IN ANTIPREDATOR BEHAVIOR AND COLOR PATTERN IN THE GARTER SNAKE, THAMNOPHIS-ORDINOIDES
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DOI：
10.1006/anbe.1993.1106
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发表时间：
1993-05-01
期刊：
影响因子：
2.5
通讯作者：
BRODIE, ED
中科院分区：
文献类型：
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作者：
BRODIE, ED
个体行为差异作为自然选择的一个因素和结果的重要性，直到最近才受到经验研究人员的极大关注。个体差异在个体遗传学上的变化方式，以及这种变化可能如何影响个人的健康状况，在很大程度上仍是未知的。本研究在实验室条件下和野外条件下，研究了西北束带蛇在头两年的生活中的反捕食行为和颜色模式的发展。研究人员检查了逃生行为的几个方面，包括最大冲刺速度、在进行反捕食者表演之前爬行的距离(耐力)，以及在飞行过程中进行常规回避动作的倾向(反转)。在这段时间里，逃逸行为的这些方面和颜色图案的条纹显示出显著的变化，尽管具体变化在实验室和野外条件下有所不同。许多发育变化与生长有关。无论是在实验室还是在田间，各年龄段的性状通常都表现出很强的正相关性。在头两年的生命中，这种蛇的反捕食者行为和颜色模式的个体差异似乎相对一致。由于个体个体的个体发育轨迹是平行的，因此使用新生儿特征值来估计在这段时间内的选择将提供选择形式的准确表示。
The importance of individual variation in behaviour as both an ingredient and a consequence of natural selection has only recently received much attention from empirical researchers. The manner in which individual differences change ontogenetically and how such changes may affect an individual's fitness are still largely unknown. This study investigates the development of anti-predator behaviour and colour pattern in the northwestern garter snake,Thamnophis ordinoides, during the first 2 years of life under laboratory conditions and in the wild. Several aspects of escape behaviour were examined, including the maximum sprint speed, the distance crawled until an anti-predator display was performed (stamina), and the tendency to perform stereotypical evasive manoeuvres during flight (reversals). These aspects of escape behaviour and the stripedness of colour pattern showed significant changes during this time, although the specific changes varied between laboratory and field conditions. Many of the developmental changes were associated with growth. Traits generally showed strong positive correlations across ages, both in the laboratory and in the field. Individual differences in anti-predator behaviour and colour pattern in this species of snake appear to be relatively consistent throughout the first 2 years of life. Using neonate trait values to estimate selection during this time will provide accurate representations of the form of selection because the ontogenetic trajectories of individuals are parallel.