Getting lost: the fungal hijacking of ant foraging behaviour in space and time
Getting lost: the fungal hijacking of ant foraging behaviour in space and time
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迷路：真菌劫持蚂蚁觅食行为的空间和时间
DOI：
10.1016/j.anbehav.2021.09.003
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发表时间：
2021
期刊：
影响因子：
2.5
通讯作者：
de Bekker, Charissa
中科院分区：
文献类型：
--
作者：
Trinh, Thienthanh;Ouellette, Renee;de Bekker, Charissa
许多寄生虫已经进化出利用宿主行为成功传播的策略，Ophiocordyceps操纵木蚁行为就是一个明显的例子。被操纵的蚂蚁被迫爬上植被，并以一种典型的“死亡之握”的咬合方式夹住它们的下颚。然后真菌杀死蚂蚁，长出一根茎并释放出感染性孢子。研究主要集中在这最后的操纵上，而对更微妙的行为变化基本上没有进行探索。现场和转录组研究发现，宿主的生物钟，嗅觉和通信可能会受到干扰，这表明真菌正在影响蚂蚁的觅食活动和效率。为了验证这一假设，我们调查了觅食行为ofCamponotus floridanusants是显着影响在早期阶段Ophiocordyceps感染。具体来说，我们使用迷宫来量化觅食模式和路径优化。此外，通过比较感染个体与健康蚂蚁和感染nonmanipulatingBeauveria bassiana的个体，我们的目的是区分nonmanipulator-specific和manipulator-specific变化。我们发现，与健康的蚂蚁相比，感染了Ophiocordyceps的蚂蚁在活动模式上变得更加活跃，不太可能参与有效的觅食努力，并且似乎不太能够与它们的巢友交流。我们假设，这些行为的变化是适应Ophiocordyceptransmismission，因为它们减少了巢友的侵略性干扰的机会。事实上，感染白僵菌的个体仍然保持节奏;然而，他们似乎也失去了最佳觅食的能力，这表明，在某种程度上，这些行为变化可能只是感染的一般行为副作用。总的来说，这项研究为今后的工作提供了信息，寄生虫策略的基础主机操纵，其他寄生虫-主机的相互作用和一般的传染病的行为生态学。
Many parasites have evolved strategies to exploit host behaviour for successful transmission.Ophiocordycepsmanipulations of carpenter ant behaviour represent an evident example. Manipulated ants are coerced to ascend vegetation and clamp down their mandibles in a stereotypical ‘death-grip’ bite. The fungus then kills the ant, sprouts a stalk and releases infective spores. Research has focused on this final manipulation, leaving the subtler behavioural changes prebiting largely unexplored. Field and transcriptome studies found that the host circadian clock, olfaction and communication may be disrupted, which suggests that the fungus is affecting ant foraging activity and effectivity. To test this hypothesis, we investigated if the foraging behaviour ofCamponotus floridanusants is notably affected during early stageOphiocordycepsinfection. Specifically, we used a maze to quantify foraging patterns and trail optimization. Moreover, by comparing infected individuals to healthy ants and those infected with nonmanipulatingBeauveria bassiana, we aimed to distinguish between nonmanipulator-specific and manipulator-specific changes. We found thatOphiocordyceps-infected ants became arrhythmic in their activity patterns, were less likely to participate in effective foraging efforts and seemed less able to communicate with their nestmates compared to healthy ants. We hypothesize that these changes in behaviours are adaptive toOphiocordycepstransmission since they reduce the chance of aggressive interference by nestmates. Indeed,Beauveria-infected individuals remained rhythmic; however, they also seemed to lose their ability to forage optimally, suggesting that, in part, these changes in behaviour might be mere general behavioural side-effects of infection. Overall, this study informs future work on parasitic strategies underlying host manipulation, other parasite–host interactions and the behavioural ecology of infectious diseases in general.
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影响因子：
64.5
作者：
Dietrich MO;Zimmer MR;Bober J;Horvath TL
通讯作者：
Horvath TL
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影响因子：
1.7
作者：
Frédéric Tripet;P. Nonacs
通讯作者：
P. Nonacs
影响因子：
7.7
作者：
LeBoeuf AC;Waridel P;Brent CS;Gonçalves AN;Menin L;Ortiz D;Riba-Grognuz O;Koto A;Soares ZG;Privman E;Miska EA;Benton R;Keller L
通讯作者：
Keller L
影响因子：
2.6
作者：
de Bekker, Charissa;Merrow, Martha;Hughes, David P.
通讯作者：
Hughes, David P.
红弓背蚁觅食者和护士日常行为节律的可塑性：社会背景和进食时间的影响。
影响因子：
3.7
作者：
Mildner S;Roces F
通讯作者：
Roces F