稻褐飞虱雄虫第二种鸣声及其生殖竞争意义

本文研究了稻褐飞虱Nilaparvata lugens雄虫第二种鸣声(SMVS)及其生殖竞争意义，结果如下：1.SMVS是2头或2头以上同种雄虫共栖一处时才产生的特殊信号，不同密度， 不同虫龄雄虫SMVS的呜叫习性不同，虫龄和温度对SMVS有明显影响。2.具SMVS行为的雄虫在求偶、交配系列行为中的优势逐步明显，最终成功交配的SMVS雄虫达70.2%，而非SMVS雄虫仅“14.9%。3.回放SMVS录音可以显著降低稻褐飞虱交配率(下降41.0%)。 SMVS是一种生殖竞争信号，具种的专一性。

THE SECOND MALE VIBRATIONAL SIGNAL OF BROWN PLANTHOPPER NILAPARVATA LUGENS (STAL) AND ITS SIGNIFICANCE IN COMPETITIVE REPRODUCTIVE BEHAVIOR

The second male vibrational signal (SMVS) of the brown planthopper Nilaparvata lugens (Stal) and its significance in competitive reproductive behavior were studied in laboratory. The results are as following: 1. SMVS was only emitted by co-living males.This SMVS behavior was, while closely associated with density and age of males, also influenced by environmental temperature and the existence of females. 2. In the course of courtship and mating the males emitting SMVS became increasingly dominant with 70.2 % successful mating, males with no SMVS, however, showed only 14.9 %. 3.The percentage of mated N. lugens was (45.7±18.3)% with the playback of the SMVS record, which was much lower than those with no playback signal (CK) or playback of female vibrational signal (FVS) and first male vibrational signal (FMVS) . The playback of SMVS, on the other hand, had no obvious influence on the percentage of S. furcifera mated. The resultsindicated that SMVS is a species-specific competitive reproductive signal of N. lugens.