Hormonal control of phase-related changes in the number of antennal sensilla in the desert locust, Schistocerca gregaria: possible involvement of [His7]-corazonin.
Hormonal control of phase-related changes in the number of antennal sensilla in the desert locust, Schistocerca gregaria: possible involvement of [His7]-corazonin.
复制标题
沙漠蝗虫触角感器数量阶段相关变化的激素控制，Schistocerca gregaria：[His7]-corazonin 可能参与其中。
DOI：
10.1016/j.jinsphys.2004.06.008
复制
发表时间：
2004
影响因子：
2.2
通讯作者：
S. Tanaka
中科院分区：
文献类型：
--
作者：
K. Maeno;S. Tanaka
研究了[His7]-Corazin对沙漠蝗虫触角感受器丰度的影响，以验证注射这种神经肽将模拟拥挤效应的假说。用[His7]-Corazin在3龄若虫幼虫体内注射[His7]-Corazine，比较成虫阶段第2、8、14触角上感受器的数量，并与注油对照或未注油的群居蝗虫进行比较。与注射石油的对照组相比，注射组氨酸后，这些触角节段上的感受器数量都显著减少，但与群居个体的数值相似。在四种主要的嗅觉感受器类型中，腔锥感受器、毛状感应器、基感受器A型和基感受器B型中，[His7]-Corazin注射影响除最后一种类型外的所有感受器的丰度。注射[His7]-Corazin的效果随注射时间的不同而不同，注射时间越早，对第8节触角感受器总丰度的影响越大，但影响的方式因感受器类型不同而不同。提出了一种假说，解释了拥挤如何通过[His7]-Corazine浓度的变化影响触角感受器的丰度和其他与相位相关的特征。
The effect of [His7]-corazonin on the abundance of antennal sensilla in the desert locust, Schistocerca gregaria, was investigated to test the hypothesis that injection of this neuropeptide would mimic a crowding effect. Solitarious locusts (reared in isolation) were injected with [His7]-corazonin at the 3rd nymphal instar and the numbers of sensilla on the 2nd, 8th and 14th antennal segments in the adult stage were compared with those for oil-injected solitarious controls or un-injected gregarious locusts (reared in group). The numbers of sensilla on these antennal segments were all reduced significantly after [His7]-corazonin injection compared with those for oil-injected controls, but similar to the values for gregarious individuals. Among the four major types of olfactory sensilla, coeloconic, trichoid, basiconic type A and basiconic type B, [His7]-corazonin injection influenced the abundance of all but the last type. The effect of [His7]-corazonin injection varied with the time of injection; the earlier the injection the larger the effects on the abundance of total antennal sensilla on the 8th segment, although the way in which the injection affected the abundance varied with the sensillum type. A hypothesis explaining how crowding affects the abundance of antennal sensilla and other phase-related characteristics through changes in [His7]-corazonin concentrations was proposed.