贵州蝗总科5种蝗虫的核型和C—带

研究了贵州斑腿蝗科(Catantopidae)的云贵希蝗(Shirakiacris yunkweiensis),中华越北蝗(Tonkinacris sinen-sis),中华板胸蝗(Spathosternum prasiniferum sinense)和网翅蝗科(Areypteridae)的青脊竹蝗(Ceracris nigricornis nig-ricornis)以及斑翅蝗科(O edipodidae)的疣蝗(Trilophida annulata)等5种蝗虫的核型和C—带。结果显示:5种蝗虫的染色体数目均为2n(♂)=22+x0=23,全部是端部着丝粒染色体;核型公式:2n(♂)=2x=23 t:NF=23;按相对长度,除中华越北蝗分为L、M两组外,其余4种都可分为L、M、S3组;都具着丝粒C—带,但端带和居间带不是每种每条染色体都有;异染色质总量是中华越北蝗的(27.48%)最多,青脊竹蝗的(19.13%)最少。

The karyotypes and c-bands of five locusta species of Acridoidca in Guizhou

The karyotypes and c-band patterns of the Shirakiacris yunkueiensis,Tonkinacris sinensis Spathosternum prasiniferum sinense of Catantopidae,and the Ceracris nigricornis nigricornis of Arcypteridae,and the Trilophidia annulata of Oedipodidae et al five locusta species of Acridoidae in Guizhou were investigated.The results showed that the chromosome number of five locusta species is 2n(♂)=22+x0=23,and they are all terminal chromosomes.The karyotype formulae are 2n(♂)=2x=23t,and NF=23.The relative length in abbition to Tonkinacris sinensis can be divided into L and M groups.and the others 4 locusta species can be divided into L、M、S groups.They all have telecentric-c-bands,but not always terminal-c-bands and mediacy-c-bands.Tonkinacris sinensis has the largest,amount of heterochrmoatin(27.48%).Ceracris nigricornis nigricornis has the smallest(19.13%).