Data for Fungal Effects on Thermal Tolerance and Energy Levels of Acyrtociphon pisum and Hippodamia convergens.

This dataset includes upper and lower thermal limits, voluntary exposure to extreme cold and warm temperatures, ATP levels, and longevity of Acyrtociphom pisum and Hippodamia convergens. Pathogens can modify many aspects of host behavior or physiology, with cascading impacts across trophic levels in terrestrial food webs. These changes include thermal tolerance of hosts, however, the effects of fungal infections on thermal tolerances and behavioral responses to extreme temperatures of prey (Acyrtociphon pisum) and predator (Hippodamia convergens) insect species have rarely been studied. We measured the impacts of fungal infection (at two levels: low and high spore load) on thermal tolerance (critical thermal maximum and minimum), voluntary exposure, energetic cost, and survival of both insect species. Fungal infection reduced thermal tolerance to heat in both insect species, but only reduced tolerance to cold of the predator. Voluntary exposure to extreme temperatures was modified by the infection, energetic cost increased with infection and thermal conditions, and survival was significantly reduced in both insect species.

本数据集涵盖了豌豆蚜（Acyrtociphom pisum）与多异瓢虫（Hippodamia convergens）的上下临界热极限、极端冷热温度主动暴露行为、三磷酸腺苷（ATP）水平以及寿命。病原体可改变宿主行为与生理的诸多方面，并对陆地食物网的跨营养级产生级联效应。其中宿主的热耐受性亦会发生改变，但目前针对真菌感染对猎物豌豆蚜（Acyrtociphom pisum）与捕食者多异瓢虫（Hippodamia convergens）这两种昆虫的热耐受性及极端温度行为响应的研究仍较为匮乏。本研究测定了两种真菌侵染水平（低孢子负荷与高孢子负荷）下，两种昆虫的热耐受性（临界高温与临界低温）、极端温度主动暴露行为、能量消耗与存活情况的变化。研究结果显示，真菌侵染会降低两种昆虫的耐热性，但仅会降低捕食者多异瓢虫（Hippodamia convergens）的耐寒性；真菌感染会改变昆虫对极端温度的主动暴露行为，能量消耗随侵染程度与温度条件升高而增加，且两种昆虫的存活率均显著下降。