Male courtship behaviors and female choice reduced during experimental starvation stress
Male courtship behaviors and female choice reduced during experimental starvation stress
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DOI：
10.1093/beheco/ary144
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发表时间：
2019-01-01
影响因子：
2.4
通讯作者：
Price, Donald K.
中科院分区：
文献类型：
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作者：
Billings, Alexis C.;Schultz, Katherine E.;Price, Donald K.
交配行为可能会表现出生存的权衡，因为分配的能量和用于生存的时间可能会减少那些对繁殖很重要的交配行为。在压力条件下生存的长期选择实验对于理解生存性状如何与其他性状（如繁殖）进行权衡是有价值的。我们研究了如何求偶行为和女性的选择可能会有所不同，在压力条件下，果蝇交配的女性和男性饥饿选择线与未选择的控制线。从饥饿选择线的男性减少求偶行为与更少的翅膀每分钟和更短的持续时间的翅膀与控制男性相比，无论女性配对。这些结果与饥饿条件下生存率的增加一致，显示出雄性动物的权衡。女性配偶的选择性也表现出显着的进化变化与未选择的控制女性表现出差异求偶持续时间：较短的求偶持续时间配对时，与男性从未选择的控制线和较长的求偶持续时间与男性从饥饿选择线。与此相反，饥饿选择的女性没有表现出显着差异，在求爱持续时间之间未选择的控制和饥饿选择的男性，尽管减少饥饿选择的男性求爱行为。我们讨论了这些结果可能表明，饥饿选择改变了女性和男性之间的相互作用的交配能力和偏好，在一个复杂的方式与生活史的权衡模型。
Mating behaviors may exhibit trade-offs with survival because the energy allocated and time devoted to survival may reduce those available for mating behaviors that are important for reproduction. Long-term selection experiments for survival in stressful conditions are valuable for understanding how survival traits may trade-off with other traits, such as reproduction. We investigated how courtship behaviors and female choice may vary under stressful conditions in Drosophila melanogaster by mating females and males from starvation-selected lines with unselected-control lines. Males from starvation-selected lines had reduced courtship behaviors with fewer wing bouts per minute and shorter duration of wing bouts compared with control males, regardless of female pairing. These results are consistent with increased survival in starvation conditions showing trade-offs in males. Female mate selectivity also showed significant evolutionary changes with unselected-control females exhibiting differential courtship durations: shorter courtship durations when paired with males from unselected-control lines and longer courtship durations with males from starvation-selected lines. In contrast, starvation-selected females showed no significant differences in courtship duration between unselected-control and starvation-selected males, despite the reduction in starvation-selected male courtship behaviors. We discuss how these results may indicate that starvation selection altered the interaction between females and males for mating ability and preferences in a complex manner consistent with life-history trade-off models.