Fitness Consequences of Boldness in Juvenile and Adult Largemouth Bass
Fitness Consequences of Boldness in Juvenile and Adult Largemouth Bass
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DOI：
10.1086/690909
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发表时间：
2017-04-01
影响因子：
2.9
通讯作者：
Scribner, Kim T.
中科院分区：
文献类型：
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作者：
Ballew, Nicholas G.;Mittelbach, Gary G.;Scribner, Kim T.
迄今为止，大多数调查人格特质与健康之间关系的研究都集中在特定生命阶段的单一健康指标（如生存）上。然而，许多人格特征可能对健康产生多重影响，可能在不同的功能背景和发展阶段发挥作用。在这里，我们解决健身的后果大胆，在自然条件下，在大嘴鲈鱼（Micropterus salmoides）的生命阶段和功能背景。具体来说，我们报告的影响大胆（1）少年生存在一个室外池塘含有天然猎物和捕食者和（2）成人繁殖成功在三个室外池塘跨越三个生殖季节（年）。少年生存的负面影响大胆，大胆的少年有一个较低的生存概率比害羞的少年。相比之下，大胆的成年男性低音有更大的繁殖成功比他们害羞的男性同行。雌性生殖成功不受大胆的影响。这些发现表明，大胆可以在不同的生命阶段影响健康。此外，大胆是高度一致的跨年和显着遗传，这表明大胆有遗传成分。因此，我们的研究结果支持的理论表明，健身权衡整个生命阶段可能有助于维持人口中的个性差异。
To date, most studies investigating the relationship between personality traits and fitness have focused on a single measure of fitness (such as survival) at a specific life stage. However, many personality traits likely have multiple effects on fitness, potentially operating across different functional contexts and stages of development. Here, we address the fitness consequences of boldness, under seminatural conditions, across life stages and functional contexts in largemouth bass (Micropterus salmoides). Specifically, we report the effect of boldness on (1) juvenile survivorship in an outdoor pond containing natural prey and predators and (2) adult reproductive success in three outdoor ponds across three reproductive seasons (years). Juvenile survival was negatively affected by boldness, with bolder juveniles having a lower probability of survival than shyer juveniles. In contrast, bolder adult male bass had greater reproductive success than their shyer male counterparts. Female reproductive success was not affected by boldness. These findings demonstrate that boldness can affect fitness differently across life stages. Further, boldness was highly consistent across years and significantly heritable, which suggests that boldness has a genetic component. Thus, our results support theory suggesting that fitness trade-offs across life stages may contribute to the maintenance of personality variation within populations.