四种雏蝗雄性鸣声结构的比较研究(直翅目:蝗总科)

A Comparative Study on Male Song Structures of Four Species of the Genus Chorthippus (Orthoptera:Acridoidea)

关键词:  召唤声  时域  频域  雏蝗属  蝗总科

Key words:  song  oscillogram  spectra  Chorthippus  Acridoidea

摘要:

为了探讨将雏蝗属(Chorthippus)的标本鉴定到种的方法,应用计算机技术分析采自新疆的白纹雏蝗(C.albonemus Cheng),宽隔雏蝗(C.amplinteritus Liu),华北雏蝗(C.brunneus huabeiensis Xia et Jin)和中宽雏蝗[C.aprcarius(L)]雄性的召唤声结构。结果:白纹雏蝗雄性每次鸣叫持续时间3~4s,脉冲组重复率26次/秒,脉冲组持续时间0.032s,主能峰频率约为7.96k Hz。宽隔雏蝗雄性每次鸣叫持续时间1.5~2s,脉冲组重复率8.9次/秒,脉冲组持续时间0.108s,主能峰频率约为8.98k Hz,每个脉冲组由5个不明显的脉冲串构成。华北雏蝗雄性每次鸣叫持续时间50~55s,脉冲组重复率8.8次/秒,脉冲组持续时间0.105 s,主能峰频率约为8.91k Hz,每个脉冲组由4个不明显的脉冲串组成。中宽雏蝗雄性每次鸣叫持续时间55~60s,脉冲组重复率为4.9次/秒,脉冲组持续时间0.18s,主能峰频率约为10.17k Hz,每个脉冲组由3个脉冲串构成。这4种雏蝗雄性召唤声特征差异显著,可作为识别物种的依据。

Abstract:

To discover the method of identify species for chorthippus,the computer technology was used to analyze the song structures of four species of grasshoppers from Xinjiang:Chorthippus albonemus Cheng,C. amplinteritus Liu,C. brunneus huabeiensis Xia et Jin,C. aprcarius(L). The duration of song,chirp repeat frequencies,chirp duration and the frequencies of highest power peak of Chorthippus albonemus Cheng,C. amplinteritus Liu,C. brunneus huabeiensis Xia et Jin,and C. aprcarius(L) are 3~4 s,26 times/s,0.032 s,7.96 kHz;1.5~2 s,8.9 times/s,0.108 s,8.98 kHz;50~55 s,8.8 times/s,0.105 s,8.91 kHz;55~60 s,4.9 times/s,0.18 s,10.17 kHz,respectively The differences of the song structures among the four species are remarkable and can be used to identify species.