Animal populations can exhibit considerable interindividual variation in both behavioral traits and niche use, but the potential connections between these characteristics are rarely compared for the same individuals. We aimed to test whether behavioral syndromes were predictive of individual diet or microhabitat in a native New Zealand freshwater fish, Gobiomorphus cotidianus. We carried out laboratory behavioral assays and repeated habitat and diet measurements in a seminatural mesocosm system. We found considerable repeatability in individual behavior, largely consistent with a proactive/reactive behavioral syndrome. We also found modest individual repeatability in microhabitat use and relatively strong individual specialization in diet. However, no measure of niche use in the mesocosms was significantly predicted by individual personality. Further studies of this type will be needed to assess whether links between individual behavior and resource use are more important in other species or ecological contexts.

中文翻译：

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人格不能预测淡水鱼的个体生态位变化

动物种群在行为特征和生态位使用上都可能表现出很大的个体差异，但是对于同一个体，很少会比较这些特征之间的潜在联系。我们旨在测试行为综合征是否可以预测新西兰本地淡水鱼Gobiomorphus cotidianus的饮食或微生境。我们在半自然的中观宇宙系统中进行了实验室行为分析，并反复进行了栖息地和饮食的测量。我们发现个人行为具有相当的可重复性，这在很大程度上与主动/反应行为综合症相符。我们还发现在微栖息地使用中个体的可重复性适中，在饮食方面的个体专业性相对较强。然而，个人人格并没有显着预测中层空间使用利基的方法。这种类型的进一步研究将需要评估个体行为与资源利用之间的联系在其他物种或生态环境中是否更为重要。