Tactile stimuli perceived by the antennae cause the isolated females to produce gregarious offspring in the desert locust, Schistocerca gregaria
Tactile stimuli perceived by the antennae cause the isolated females to produce gregarious offspring in the desert locust, Schistocerca gregaria
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DOI：
10.1016/j.jinsphys.2010.09.009
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发表时间：
2011-01-01
影响因子：
2.2
通讯作者：
Harano, Ken-ichi
中科院分区：
文献类型：
--
作者：
Maeno, Koutaro;Tanaka, Seiji;Harano, Ken-ichi
母亲决定后代的身体大小和着色的沙漠蝗虫，Schistocerca gregaria，取决于拥挤的条件下经历的短敏感期，发生在两到六天前沉积的卵荚。独居（隔离饲养）的女性产生相对较小的鸡蛋，产量独居的绿色孵化，但女性在敏感期内暴露于拥挤的条件下，产生较大的鸡蛋，产量的深色孵化特点的群居形式。本研究的目的是确定影响母体决定后代特征的刺激以及这些刺激被感知的部位。通过将孤立的女性成年人暴露于其他成年人的视觉，嗅觉和触觉刺激的各种组合，我们发现，没有触觉刺激，就不会引起拥挤效应。涂上指甲油的各种身体表面，然后暴露于拥挤的刺激表明，女性成年人认为拥挤的刺激与他们的触角。这一发现得到了另一个实验的支持，在这个实验中，在将被隔离的雌性暴露在拥挤的环境中之前，触角要么被移除，要么被蜡覆盖。无论是5-羟色胺，也不影响其受体的拮抗剂的密度依赖性母体确定的后代特征时，注射到隔离或拥挤的女性成年人。(C)2010爱思唯尔有限公司版权所有。
Maternal determination of progeny body size and coloration in the desert locust, Schistocerca gregaria, depends on the crowding conditions experienced during the short sensitive period that occurs two to six days before the deposition of the egg pod. Solitarious (isolated-reared) females produce relatively small eggs that yield solitarious green hatchlings but, females that are exposed to crowded conditions during the sensitive period, produce larger eggs that yield the dark-colored hatchlings characteristic of gregarious forms. The present study aimed to determine the stimuli influencing the maternal determination of progeny characteristics as well as the site at which such stimuli are perceived. By exposing isolated female adults to various combinations of visual, olfactory and tactile stimuli from a crowd of other adults, we found that no crowding effects could be elicited without tactile stimulation. Coating of various body surfaces with nail polish followed by exposure to crowding stimulation suggested that female adults perceive crowding stimuli with their antennae. This finding was supported by another experiment in which the antennae were either removed or covered with wax before the isolated females were exposed to crowded conditions. Neither serotonin nor an antagonist of its receptor affected the density-dependent maternal determination of progeny characteristics when injected into isolated or crowded female adults. (C) 2010 Elsevier Ltd. All rights reserved.