Collective defence portfolios of ant hosts shift with social parasite pressure
Collective defence portfolios of ant hosts shift with social parasite pressure
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蚂蚁宿主的集体防御组合随着社会寄生虫压力而变化
DOI：
10.1098/rspb.2014.0225
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Foitzik
中科院分区：
文献类型：
--
作者：
Jongepier;I. Kleeberg;S. Job;S. Foitzik
随着寄生虫突破连续的防线，宿主防御的成本变得越来越高。由于选择有利于以尽可能低的成本成功抵抗寄生的宿主，因此不断升级的共同进化军备竞赛可能会推动宿主防御组合转向更加昂贵的策略。我们通过比较两种食胸虫物种的 17 个种群，研究了宿主防御组合与社会寄生虫压力之间的相互作用。如果成功，集体攻击不仅可以防止寄生，还可以节省宿主群体寻找和迁移到新巢址的成本。然而，一旦寄生虫突破了宿主的巢穴防御，宿主群体就应该采取逃跑作为更有利的抵抗策略。我们发现，在寄生虫压力较低的情况下，宿主群体更有可能对入侵的美洲原颌奴隶制造者做出集体攻击性反应，这阻止了奴隶制造者逃跑并可能招募同伴。然而，随着寄生虫压力的增加，两种宿主物种的蚁群都更有可能逃跑而不是战斗。我们得出的结论是，宿主防御组合的变化与社会寄生虫压力一致，这与前线防御的退化以及巢寄生虫宿主中经常调用的后续抗寄生虫策略的演变是一致的。
Host defences become increasingly costly as parasites breach successive lines of defence. Because selection favours hosts that successfully resist parasitism at the lowest possible cost, escalating coevolutionary arms races are likely to drive host defence portfolios towards ever more expensive strategies. We investigated the interplay between host defence portfolios and social parasite pressure by comparing 17 populations of twoTemnothoraxant species. When successful, collective aggression not only prevents parasitation but also spares host colonies the cost of searching for and moving to a new nest site. However, once parasites breach the host's nest defence, host colonies should resort to flight as the more beneficial resistance strategy. We show that under low parasite pressure, host colonies more likely responded to an intrudingProtomognathus americanusslavemaker with collective aggression, which prevented the slavemaker from escaping and potentially recruiting nest-mates. However, as parasite pressure increased, ant colonies of both host species became more likely to flee rather than to fight. We conclude that host defence portfolios shift consistently with social parasite pressure, which is in accordance with the degeneration of frontline defences and the evolution of subsequent anti-parasite strategies often invoked in hosts of brood parasites.
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影响因子：
4.9
作者：
Blatrix, R;Herbers, JM
通讯作者：
Herbers, JM
影响因子：
64.8
作者：
Gilman, R. Tucker;Nuismer, Scott L.;Jhwueng, Dwueng-Chwuan
通讯作者：
Jhwueng, Dwueng-Chwuan
DOI：
--
发表时间：
2010
期刊：
Evolution; international journal of organic evolution
影响因子：
--
作者：
T. O. Svennungsen;Ø. H. Holen
通讯作者：
Ø. H. Holen
社会性昆虫的防御机制
DOI：
--
发表时间：
1984
期刊：
影响因子：
--
作者：
H. R. Hermann
通讯作者：
H. R. Hermann
DOI：
10.1093/beheco/arq191
发表时间：
2011-03
期刊：
Behavioral ecology : official journal of the International Society for Behavioral Ecology
影响因子：
--
作者：
Pamminger T;Scharf I;Pennings PS;Foitzik S
通讯作者：
Foitzik S