Olfactory sensitivity differentiates morphologically distinct worker castes in Camponotus floridanus.
Olfactory sensitivity differentiates morphologically distinct worker castes in Camponotus floridanus.
复制标题
DOI：
10.1186/s12915-022-01505-x
复制
发表时间：
2023-01-08
期刊：
影响因子：
5.4
通讯作者：
Zwiebel LJ
中科院分区：
文献类型：
--
作者：
Ferguson ST;Bakis I;Edwards ND;Zwiebel LJ
华丽弯曲蚁的蚁群由一只繁殖女王和数千只不育雌性后代组成，这些雌性后代由两个形态上截然不同的种姓组成：较小的未成年人和较大的主要蚁。未成年人在蜂群内执行大多数任务，包括育儿和收集食物，而专业人员的角色较少，被假设为与殖民地防御相关的专门士兵种姓。工人对这些不同任务的分配在一定程度上取决于对当地信息的检测和处理，包括信息素和其他化学混合物，如角质层碳氢化合物。然而，外周嗅觉敏感度在建立和维持形态上不同的工人种姓及其相关行为方面所起的作用在很大程度上仍未被探索。我们检测了成虫对一般气味、角质层提取物和一种痕迹信息素的电生理反应，发现社会行为与嗅觉敏感度呈正相关。尤其是未成年人，主要表现为对嗅觉刺激的兴奋性反应，而主要工作者主要表现为抑制的亚溶剂型反应。这一范式的一个显著例外是，未成年人和专业学生都对同种的、非筑巢的角质层提取物表现出强烈的、剂量依赖的兴奋性反应。此外，虽然未成年人和少校都积极攻击非同居的敌人，但体型较大、生理上截然不同的专业显示出迅速制服和杀死敌人的能力显著增强。我们的研究表明，未成年人和专业学生的行为模式与外周嗅觉敏感度和气味编码的深刻变化相一致。这里报告的数据支持这样一种假设，即未成年人是具有广泛兴奋敏感性的多潜能工作者，而少校是具有高度专业嗅觉系统的敬业士兵，用于区分非筑巢敌人。总体而言，我们得出的结论是，在蚁群中，主要花纹夜蛾确实代表了一个生理和行为上专门化的士兵种姓，其中种姓特有的嗅觉敏感度在任务分配和社会行为调节中发挥着重要作用。网上版载有补充材料，可在10.1186/s12915-022-01505-x查阅。
Camponotus floridanus ant colonies are comprised of a single reproductive queen and thousands of sterile female offspring that consist of two morphologically distinct castes: smaller minors and larger majors. Minors perform most of the tasks within the colony, including brood care and food collection, whereas majors have fewer clear roles and have been hypothesized to act as a specialized solider caste associated with colony defense. The allocation of workers to these different tasks depends, in part, on the detection and processing of local information including pheromones and other chemical blends such as cuticular hydrocarbons. However, the role peripheral olfactory sensitivity plays in establishing and maintaining morphologically distinct worker castes and their associated behaviors remains largely unexplored. We examined the electrophysiological responses to general odorants, cuticular extracts, and a trail pheromone in adult minor and major C. floridanus workers, revealing that the repertoire of social behaviors is positively correlated with olfactory sensitivity. Minors in particular display primarily excitatory responses to olfactory stimuli, whereas major workers primarily manifest suppressed, sub-solvent responses. The notable exception to this paradigm is that both minors and majors display robust, dose-dependent excitatory responses to conspecific, non-nestmate cuticular extracts. Moreover, while both minors and majors actively aggress non-nestmate foes, the larger and physiologically distinct majors display significantly enhanced capabilities to rapidly subdue and kill their adversaries. Our studies reveal the behavioral repertoire of minors and majors aligns with profound shifts in peripheral olfactory sensitivity and odor coding. The data reported here support the hypothesis that minors are multipotential workers with broad excitatory sensitivity, and majors are dedicated soldiers with a highly specialized olfactory system for distinguishing non-nestmate foes. Overall, we conclude that C. floridanus majors do indeed represent a physiologically and behaviorally specialized soldier caste in which caste-specific olfactory sensitivity plays an important role in task allocation and the regulation of social behavior in ant colonies. The online version contains supplementary material available at 10.1186/s12915-022-01505-x.
登录
查看更多内容
DOI：
10.1098/rspb.2015.0704
发表时间：
2015-07-22
影响因子：
4.7
作者：
Kamhi, J. Frances;Nunn, Kelley;Traniello, James F. A.
通讯作者：
Traniello, James F. A.
影响因子：
4.3
作者：
Gramfort A;Luessi M;Larson E;Engemann DA;Strohmeier D;Brodbeck C;Goj R;Jas M;Brooks T;Parkkonen L;Hämäläinen M
通讯作者：
Hämäläinen M
影响因子：
2.7
作者：
Benjamini, Yoav;Krieger, Abba M.;Yekutieli, Daniel
通讯作者：
Yekutieli, Daniel
影响因子：
16.6
作者：
Crall, James D.;Gravish, Nick;Combes, Stacey A.
通讯作者：
Combes, Stacey A.
影响因子：
2.4
作者：
Cole, Blaine J.;Smith, Adrian A.;Wiernasz, Diane C.
通讯作者：
Wiernasz, Diane C.