Higher brain centers for social tasks in worker ants, Camponotus japonicus
Higher brain centers for social tasks in worker ants, Camponotus japonicus
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DOI：
10.1002/cne.23001
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发表时间：
2012-05-01
影响因子：
2.5
通讯作者：
Yokohari, Fumio
中科院分区：
文献类型：
--
作者：
Nishikawa, Michiko;Watanabe, Hidehiro;Yokohari, Fumio
蚂蚁是一种社会性昆虫，它们有非常复杂的化学通讯系统，使用各种各样的信息素。在木蚁中，工蚁和蚁后的触角上都有雌性特有的基本感受器。触角叶是雌性木蚁的主要加工中心，含有约480个肾小球，根据感觉传入束可分为7组(T1T7肾小球)。基本感受器中感觉神经元的轴突被认为投射到女性特有的T6肾小球。因此，这些感受器和肾小球被认为与蚂蚁中雌性特有的社会任务有关。通过将染料填充到触角叶的局部神经元(LNS)和投射神经元(PNS)，我们在神经解剖学上揭示了工蚁存在一个独立的信号处理系统，可能与社会任务有关。在触角叶，T6肾小球和非T6肾小球被LNS明显分隔。此外，来自不同类型肾小球的单球PNS(T6 uni-PNS和非T6 uni-PNS)的轴突终末也分布在次级嗅觉中枢、蘑菇体的花冠和侧角的侧角：T6 uni-PNS终止于蘑菇体花萼基环和唇缘的外层和侧角的后部，而非T6 uni-PNS终止于基环和侧角的中层和内层以及侧角的前部。这些发现表明，可能与社交任务有关的信息可能从其他嗅觉信息中分离出来，并在一个单独的子系统中进行处理。J.Comp.神经。520：15841598,2012年。(C)2011年威利期刊公司。
Ants, eusocial insects, have highly elaborate chemical communication systems using a wide variety of pheromones. In the carpenter ant, Camponotus japonicus, workers and queens have the female-specific basiconic sensilla on antennae. The antennal lobe, the primary processing center, in female carpenter ants contains about 480 glomeruli, which are divided into seven groups (T1T7 glomeruli) based on sensory afferent tracts. The axons of sensory neurons in basiconic sensilla are thought to project to female-specific T6 glomeruli. Therefore, these sensilla and glomeruli are thought to relate to female-specific social tasks in the ants. By using dye filling into local neurons (LNs) and projection neurons (PNs) in the antennal lobe, we neuroanatomically revealed the existence of an isolated processing system for signals probably relating to social tasks in the worker ant. In the antennal lobe, two categories of glomeruli, T6 glomeruli and non-T6 glomeruli, are clearly segregated by LNs. Furthermore, axon terminals of uniglomerular PNs from the respective categories of glomeruli (T6 uni-PNs and non-T6 uni-PNs) are also segregated in the secondary olfactory centers, the calyces of the mushroom body and the lateral horn: T6 uni-PNs terminate in the outer layers of the basal ring and lip of mushroom body calyces and in the posterior region of the lateral horn, whereas non-T6 uni-PNs terminate in the middle and inner layers of the basal ring and lip and in the anterior region of the lateral horn. These findings suggest that information probably relating to social tasks might be isolated from other olfactory information and processed in a separate subsystem. J. Comp. Neurol. 520:15841598, 2012. (c) 2011 Wiley Periodicals, Inc.