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首页> 外文期刊>Journal of Fish Biology >Correlation between boldness and body mass in natural populations of the poeciliid Brachyrhaphis episcopi
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Correlation between boldness and body mass in natural populations of the poeciliid Brachyrhaphis episcopi

机译：短孢子虫短种群自然种群中胆量与体重的相关性

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摘要

The boldness of individual Brachyrhaphis episcopi, collected from regions of high and low predation, was investigated using two independent assays: (1) the time to emerge from cover and (2) the propensity to leave shoal mates and investigate a novel object. A strong correlation between the two assays was revealed such that fish that emerged from shelter sooner were also more likely to approach a novel object. This is indicative of a boldness personality axis acting across both behavioural contexts. Fish from high-predation areas were bolder than those from low-predation areas and males were bolder than females. A significant correlation between body mass, standard length (L-S) and boldness score was also found. In general, bold fish had a greater body mass at a given L-S than shy fish. These results suggest that personality traits are strongly influenced by population-specific ecological variables and may have fitness consequences in wild populations.
机译：使用两个独立的方法研究了从高捕食和低捕食地区收集的单个腕鲷的勇气：（1）从掩盖出现的时间;（2）离开浅滩伴侣并研究新物体的倾向。揭示了这两种测定法之间的强相关性，因此从庇护所出来的鱼类越早越有可能接近新物体。这表明了在两种行为情境中都发挥作用的大胆个性轴。高捕捞区的鱼比低捕捞区的鱼大胆，雄鱼比雌鱼大胆。体重，标准长度（L-S）和胆量得分之间也存在显着相关性。通常，在给定的L-S下，大胆鱼的体重要比害羞鱼大。这些结果表明，人格特质受到种群特定生态变量的强烈影响，并且可能对野生种群产生适应性后果。

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