十二种沫蝉的染色体研究 (同翅目： 沫蝉总科)

Abstract

Abstract: Meioses in twelve species of Chinese spittle bugs were studied. The results indicated that their chromosome numbers are varied from 2n=16 to 30, and sex determination are all XO type. Karyotype characteristics of Cercopoidea are that: (1) Chromosome volumes are small, chromosome numbers are much varied, most species have higher chromosome numbers, and the predominant type is 2n=26(24+XO). (2) Translocation occurs very frequently. Fragmentation induced by translocation to increase chromosome numbers may be the main mechanism of karyotype evolution in this superfamily. (3) Prophase Ⅰ during meiosis has typical bouquet stage but without diffuse stage, similar to Cicadelloidea, Membracoidea and Cicadoidea, but different from Fulgoroidea. The relationship of superfamilies in Auchenorrhyncha may be Fulgoroidea +{Cicadoidea+［Cercopoidea+ Cicadelloidea+Membracoidea)］}.

Key words: Homoptera, Cercopoidea, chromosome, meiosis, karyotype

TIAN Run-Gang, ZHANG Ya-Lin, YUAN Feng. Meioses in twelve species of Cercopoidea (Insecta: Homoptera) from China[J]., 2005, 48(2): 310-313.

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http://www.insect.org.cn/EN/Y2005/V48/I2/310

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Meioses in twelve species of Cercopoidea (Insecta: Homoptera) from China

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