贵州蝗总科5种蝗虫的核型和C—带

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

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-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%）.