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首页> 外文期刊>Environmental Entomology >The Thermal Breadth of Nylanderia fulva (Hymenoptera: Formicidae) Is Narrower Than That of Solenopsis invicta at Three Thermal Ramping Rates: 1.0, 0.12, and 0.06 degrees C min(-1)
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The Thermal Breadth of Nylanderia fulva (Hymenoptera: Formicidae) Is Narrower Than That of Solenopsis invicta at Three Thermal Ramping Rates: 1.0, 0.12, and 0.06 degrees C min(-1)

机译：在三种升温速率分别为1.0、0.12和0.06摄氏度时，Nylanderia fulva（膜翅目：蚁科）的热广度比Sinoenopsis invicta的热广度小（-1）。

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摘要

Determining the upper (CTmax) and lower (CTmin) critical thermal limits of invasive ants provides insight into how temperature could shape their distribution, seasonality, and daily activity. Understanding the potential distribution of invasive ants is imperative to improving quarantine and management efforts. Nylanderia fulva (Mayr) (tawny crazy ant) and Solenopsis invicta (Buren) (red imported fire ant) are invasive ants that are established throughout the southeastern United States. Recent studies have found that body size and thermal ramping rate can affect the estimation of critical thermal limits. However, the effects of both variables and their interactions on the thermal limits of N. fulva and S. invicta have not previously been described. Thus, we evaluated the impacts of body size and ramping rate on the critical thermal limits of N. fulva and S. invicta. Overall, N. fulva had a narrower thermal breadth than S. invicta (Nf CTmin = 7.3 degrees C and Nf CTmax = 41.3 degrees C vs. Si CTmin = 4.1 degrees C and Si CTmax = 45.3 degrees C). For both species, slower ramping rates resulted in lower CTmax values and ants with smaller head capsules had a narrower thermal breadth than ants with larger head capsules. These data improve our understanding of the critical thermal limits of both species and could be useful for developing predictive models that estimate the future spread of these invasive ants in nonnative ranges.
机译：确定侵入性蚂蚁的最高（CTmax）和最低（CTmin）临界热极限，可以深入了解温度如何影响其分布，季节性和日常活动。了解入侵性蚂蚁的潜在分布对于改善检疫和管理工作势在必行。 Nylanderia fulva（Mayr）（黄褐色的疯狂蚂蚁）和Solenopsis invicta（Buren）（红色导入火蚁）是在美国东南部建立的入侵性蚂蚁。最近的研究发现，机体尺寸和热升温速率会影响临界热极限的估计。但是，这两个变量及其相互作用对黄花猪笼草和S. invicta的热极限的影响以前没有进行过描述。因此，我们评估了体形和斜率对N. fulva和S. invicta的临界热极限的影响。总体而言，富叶猪笼草的热宽度比杀虫链霉菌窄（Nf CTmin = 7.3摄氏度，Nf CTmax = 41.3摄氏度，而Si CTmin = 4.1摄氏度，Si CTmax = 45.3摄氏度）。对于这两个物种，较慢的爬升速率导致较低的CTmax值，并且与较小的蚂蚁相比，较小的蚂蚁具有较宽的热宽度。这些数据增进了我们对这两个物种的临界热极限的理解，并且对于开发预测模型来估计这些侵入性蚂蚁在非自然范围内的未来传播可能有用。

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