Altered Heat-Avoidance Behavior Following Damage to the Extended Architecture of Mexican Jumping Bean Moth Larvae (Cydia saltitans)

IF 1 3区 农林科学 Q3 ENTOMOLOGY
Anna Purtell, Jesse Anderson, Rebecca Ferguson, Konrad Juskiewicz, Michael H. Lee, Megan J. Lee, Lindsey Swierk
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Abstract

In response to physical damage, organisms must balance recovery with adaptive responses to other environmental stressors. Understanding how damage and repair influence adaptive responses to high environmental temperatures is of particular interest in light of global climate change. We investigate the impact of damage and subsequent repair on heat-avoidance behaviors in Cydia saltitans larvae using host seeds (Sebastiania pavoniana) as protective structures (together colloquially known as “Mexican jumping beans”). These larvae perform temperature-dependent “jumping” or “rolling” behaviors to escape extreme heat, which are crucial for larval survival in their native arid and hot subtropical dry forests. Due to possible costs of repair and limited energetic resources, we hypothesized that experiencing damage and investing in subsequent repair to a host seed would reduce larval displacement distance from extreme heat when compared to individuals that experienced damage without repairing the host seed, or the undamaged control group. Results suggest that larvae in control conditions exhibited greater displacement from heat compared to those in either damage treatment group. Contrary to predictions, damage and subsequent repair impaired heat avoidance behavior to same extent as damage without investing in repair. This reduced displacement distance in both damage treatment groups may be linked to energy allocation or an adaptive antipredator response. These findings contribute to our understanding of how environmental stressors interact to shape behavioral responses in insects with “extended architecture.” As global temperatures rise, insights into the flexibility of adaptive behaviors are increasingly crucial.

Abstract Image

墨西哥跳豆蛾幼虫(Cydia saltitans)扩展结构受损后避热行为的改变
在应对物理损伤时,生物必须在恢复与对其他环境压力的适应性反应之间取得平衡。鉴于全球气候变化,了解损伤和修复如何影响对高环境温度的适应性反应尤为重要。我们研究了以宿主种子(Sebastiania pavoniana)为保护结构(俗称 "墨西哥跳豆")的矢车菊幼虫的损伤和后续修复对避热行为的影响。这些幼虫会做出与温度有关的 "跳跃 "或 "滚动 "行为,以躲避极端高温,这对幼虫在其原生干旱和炎热的亚热带干燥森林中的生存至关重要。由于可能的修复成本和有限的能量资源,我们假设,与经历损害但未修复寄主种子的个体或未受损的对照组相比,经历损害并投资于随后修复寄主种子的个体将减少幼虫在极端高温下的迁移距离。结果表明,与任何一个受损处理组相比,对照条件下的幼虫表现出更大的高温位移。与预测相反的是,受到损害并随后进行修复的幼虫的避热行为与没有进行修复的幼虫的避热行为受到的损害程度相同。两个损伤处理组中位移距离的减少可能与能量分配或适应性反捕食者反应有关。这些发现有助于我们理解环境压力因素如何相互作用,从而影响具有 "扩展结构 "的昆虫的行为反应。随着全球气温的升高,了解适应行为的灵活性越来越重要。
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来源期刊
Journal of Insect Behavior
Journal of Insect Behavior 生物-昆虫学
CiteScore
1.50
自引率
0.00%
发文量
16
审稿时长
6-12 weeks
期刊介绍: Journal of Insect Behavior offers peer-reviewed research articles and short critical reviews on all aspects of the behavior of insects and other terrestrial arthropods such as spiders, centipedes, millipedes, and isopods. An internationally renowned editorial board discusses technological innovations and new developments in the field, emphasizing topics such as behavioral ecology, motor patterns and recognition, and genetic determinants.
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