Wind effects on individual male and female Bactrocera jarvisi (Diptera: Tephritidae) tracked using harmonic radar.

IF 1.8 3区 农林科学 Q2 ENTOMOLOGY
Allysen M Welty Peachey, Ethan R Moses, Adesola J Johnson, Meredith G M Lehman, James M Yoder, Stefano G De Faveri, Jodie Cheesman, Nicholas C Manoukis, Matthew S Siderhurst
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引用次数: 0

Abstract

Wind affects the movement of most volant insects. While the effects of wind on dispersal are relatively well understood at the population level, how wind influences the movement parameters of individual insects in the wild is less clear. Tephritid fruit flies, such as Bactrocera jarvisi, are major horticultural pests worldwide and while most tephritids are nondispersive when host plants are plentiful, records exist for potentially wind-assisted movements up to 200 km. In this study, harmonic radar (HR) was used to track the movements of both male and female lab-reared B. jarvisi in a papaya field. Overall flight directions were found to be correlated with wind direction, as were the subset of between-tree movements, while within-tree movements were not. Furthermore, the effect of wind direction on fly trajectories varied by step-distance but not strongly with wind speed. Mean path distance, step distance, flight direction, turning angle, and flight propensity did not vary by sex. Both male and female movements are well fit by 2-state hidden Markov models further supporting the observation that B. jarvisi move differently within (short steps with random direction) and between (longer more directional steps) trees. Data on flight directionality and step-distances determined in this study provide parameters for models that may help enhance current surveillance, control, and eradication methods, such as optimizing trap placements and pesticide applications, determining release sites for parasitoids, and setting quarantine boundaries after incursions.

使用谐波雷达追踪风对雌雄 Bactrocera jarvisi(双翅目:Tephritidae)个体的影响。
风会影响大多数易变昆虫的运动。虽然在种群水平上,风对昆虫扩散的影响相对较好理解,但在野外,风如何影响单个昆虫的运动参数却不太清楚。虽然在寄主植物丰富的情况下,大多数褐飞虱是不扩散的,但有记录表明,褐飞虱可能在风的协助下进行长达 200 千米的移动。在这项研究中,使用谐波雷达(HR)跟踪了实验室饲养的雄性和雌性 B. jarvisi 在木瓜田中的活动。结果发现,总体飞行方向与风向有关,树间移动也与风向有关,而树内移动则与风向无关。此外,风向对苍蝇飞行轨迹的影响因步距而异,但与风速关系不大。平均路径距离、步距、飞行方向、转弯角度和飞行倾向没有性别差异。雄性和雌性的运动都能很好地与二态隐马尔可夫模型拟合,这进一步证实了贾维氏蝇在树内(随机方向的短步距)和树间(方向性更强的长步距)的运动是不同的。本研究确定的飞行方向性和步距数据为模型提供了参数,这些参数可能有助于改进当前的监测、控制和根除方法,例如优化诱捕器的放置和杀虫剂的施用、确定寄生虫的释放地点以及在入侵后设置检疫边界。
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来源期刊
Environmental Entomology
Environmental Entomology 生物-昆虫学
CiteScore
3.90
自引率
5.90%
发文量
97
审稿时长
3-8 weeks
期刊介绍: Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment. In addition to research papers, Environmental Entomology publishes Reviews, interpretive articles in a Forum section, and Letters to the Editor.
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