SOLITARIZATION IN THE DESERT LOCUST, SCHISTOCERCA-GREGARIA (FORSKAL) (ORTHOPTERA, ACRIDIDAE)
SOLITARIZATION IN THE DESERT LOCUST, SCHISTOCERCA-GREGARIA (FORSKAL) (ORTHOPTERA, ACRIDIDAE)
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DOI：
10.1017/s0007485300015479
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发表时间：
1988-12-01
影响因子：
1.9
通讯作者：
GILLETT, SD
中科院分区：
文献类型：
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作者：
GILLETT, SD
测量了群居若虫在不同隔离期后失去形成群体倾向的比率。隔离24小时后，社交群体明显丧失。分组水平的下降与若虫被隔离的天数高度显着相关。进一步的实验表明，若虫在被隔离之前在拥挤环境中度过的时间长度可以显着改变成群行为的丧失程度，但之前拥挤期间的密度对成群行为的减少并没有一致的影响。此前人们认为，一旦获得了群居倾向，S. gregaria若虫就几乎不会失去它们的群居倾向。现在事实证明情况并非如此。该物种的行为对社会环境非常敏感，无论蝗虫是正在学习形成群体还是正在失去这种倾向。
The rate at which gregarious nymphs of Schistocerca gregaria (Forskal) lose the tendency to form groups after different period of isolation was measured. There was a marked loss of social grouping after isolation for 24 h. The fall in level of grouping was highly significantly correlated with the number of days the nymphs had been isolated. Further experiments showed that the extent of loss of grouping behaviour could be significantly modified by the length of time the nymphs spent in crowded conditions before they were isolated, but the density during previous crowding did not have a consistent effect on reduction in grouping. It had been previously considered that S. gregaria nymphs lose very litte of their gregarious tendency once it is acquired; this is now shown not to be the case. The behaviour of this species is very responsive to the social environment, whether the locusts are learning to form groups or are losing that tendency.