Regulation of host colony activity by the social parasite Polistes semenowi
Regulation of host colony activity by the social parasite Polistes semenowi
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社会寄生虫马蜂对寄主群体活动的调节
DOI：
10.1007/s00040-016-0478-y
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发表时间：
2016
期刊：
影响因子：
1.3
通讯作者：
Green J
中科院分区：
文献类型：
--
作者：
Green J
社会团体的生产力在很大程度上取决于对团体成员之间的工作努力的有效管理。在群居的昆虫群体中，对工作的管理可能是分散的，或者也可能由群体内的一个或几个人(“起搏器”)控制。社会寄生虫篡夺宿主群体并取代优势群体成为主要的生殖群体，同样依赖于宿主有效地调节饲养寄生虫后代的工作，但很少有研究探索寄生虫用来实现这一点的策略。我们比较了社会寄生蜂Polistes semenowi和优势个体在寄主种群未寄生的巢上对寄主活动的调节作用。优势雌蜂在未被寄生的蜂群中充当起搏器，频繁地与蜂群成员相互作用，发起活动爆发和觅食旅行，而寄生虫并不比普通蜂群成员启动更多的活动。然而，在寄生和未寄生的群体中，总体活动水平是相似的，这表明寄生虫可能使用其他间接手段来控制宿主的活动。在清除寄生虫或优势寄主后，菌落活性没有显著变化，这可能是因为其他个体迅速占据了优势地位，或者是因为对菌落活性的持续间接影响。OFP的角色。精液在调节宿主活动方面与报道的第二种政治社会寄生虫--心房原虫有显著不同，这表明不同的政治社会寄生虫在宿主群体中可能具有根本不同的社会角色，尽管它们在系统发育上彼此密切相关。
The productivity of social groups depends critically on effective regulation of work effort among group members. In social insect colonies, regulation of work may be decentralised or alternatively may be controlled by one or a few individuals (‘pacemakers’) within the colony. Social parasites, which usurp host colonies and replace the dominant as the principal reproductive, similarly depend on efficient regulation of work by hosts to rear parasite offspring, but few studies have explored the strategies used by parasites to achieve this. We compared the role of the social parasitePolistes semenowiin regulating host activity with that of the dominant individual on unparasitized nests of the host species,P. dominula. Dominant foundresses acted as pacemakers within unparasitized colonies, interacting frequently with colony members to initiate activity bursts and foraging trips, whereas parasites did not initiate more activity than the average colony member. Nonetheless, overall activity levels were similar in parasitized and unparasitized colonies, indicating that parasites may use other, indirect means to control the host activity. Colony activity did not change significantly following the removal of parasites or dominant host foundresses, perhaps because other individuals rapidly assumed the dominant position, or because of persistent indirect effects on colony activity. The role ofP. semenowiin regulating the host activity differs strikingly from that reported for a secondPolistessocial parasite,P. atrimandibularis, suggesting that differentPolistessocial parasites may have fundamentally different social roles within host colonies, despite being closely phylogenetically related to one another.
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