Costs of walking: differences in egg size and starvation resistance of females between strains of the red flour beetle (Tribolium castaneum) artificially selected for walking ability
Costs of walking: differences in egg size and starvation resistance of females between strains of the red flour beetle (Tribolium castaneum) artificially selected for walking ability
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DOI：
10.1111/jeb.13356
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发表时间：
2018-08
影响因子：
2.1
通讯作者：
Kentarou Matsumura;T. Miyatake
中科院分区：
文献类型：
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作者：
Kentarou Matsumura;T. Miyatake
在许多动物中，运动通常会影响觅食或迁徙等健康成分。另一方面，机动性高的人往往也有健身成本。这种运动和其他特征之间的权衡可以解释种群中运动能力的变化。然而，很少有研究关注通过行走的运动，尽管许多先前的昆虫研究已经研究了翅膀多态性的移动变化的进化。本研究以红粉甲虫（Tribolium castaneum）的行走能力为研究对象，考察了行走能力高的雌性与行走能力低的雌性是否存在适应成本。目前的研究结果表明，与行走能力较低的雌性相比，行走能力较高的雌性产卵较小，抗饥饿能力较低。这些结果表明，较高的行走能力对女性来说是昂贵的，这种健康成本可能解释了种群中行走能力变化的维持。
In many animals, movement often affects fitness components such as foraging or migration. On the other hand, individuals with higher mobility also often have fitness costs. This trade‐off between movement and other traits may explain the maintenance of variation in moving ability in a population. However, few studies have focused on movement by walking, although many previous studies of insects have investigated the evolution of variations in mobility with wing polymorphism. In this study, we focused on the walking ability of the red flour beetle (Tribolium castaneum) and investigated whether females with higher than lower walking ability have fitness costs. The present results showed that females with genetically higher walking ability produced smaller eggs and had lower starvation resistance than females with lower walking ability. These results suggest that higher walking ability is costly for females, and this fitness cost may explain maintenance of variations of walking ability in a population.