Dispersal behavior correlates with personality of a North American fish
Dispersal behavior correlates with personality of a North American fish
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扩散行为与北美鱼类的个性相关
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Belk
中科院分区：
文献类型：
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作者：
Josh E Rasmussen;M. Belk
扩散过程是由个体（内在）特征和环境（外在）因素的相互作用决定的。尽管许多研究都关注并量化了扩散，但很少有研究将内在和外在因素结合起来进行评估。本研究检验了内在特征（探索倾向和大小）和外在因素（种群密度和生境质量）对美国西部中型鲦鱼——南方棱鱼（Lepidomeda aliciae）扩散的相对重要性。使用二项响应的广义线性模型来确定标记后一年个体分散的概率。中等大小的个体更倾向于探索新的环境，一年后在原始捕获区域之外被重新捕获的可能性是同等大小的个体的10.7倍（分散）。在小型和大型分类中，探索者分类之间的差异可以忽略不计。上游50米以内的开放生境也增加了扩散的可能性。研究范围内的相对位置和种群密度与个体分散概率无显著相关。我们的研究结果表明，对个性的理解可以阐明种群内部和种群之间的扩散模式（Current Zoology 58(2): 260 - 270, 2012）。
The process of dispersal is determined by the interaction of individual (intrinsic) traits and environmental (extrinsic) factors. Although many studies address and quantify dispersal, few evaluate both intrinsic and extrinsic factors jointly. We test the relative importance of intrinsic traits (exploration tendency and size) and extrinsic factors (population density and habitat quality) on dispersal of a medium-sized western United States minnow, southern leatherside chub Lepidomeda aliciae. A generalized linear model with a binomial response was used to determine the probability of individuals dispersing one year after tagging. Medium-sized individuals that were more prone to explore novel environments were 10.7 times more likely to be recaptured outside of their original capture area after a year (dispersal) compared to non-explorer individuals of the same size class. Differences be- tween explorer classifications within the small and large size classes were negligible. Open habitat within 50 m upstream also in- creased the probability of dispersal relative to controls. Relative location within the study reach, and population density were not significantly related to dispersal probabilities of individuals. Our results indicate that understanding of personality may illuminate patterns of dispersal within and among populations (Current Zoology 58 (2): 260270, 2012).