五种蟋蟀染色体的研究

A Study on Chromosomes in Five Crickets

报道了中国4种蟋蟀的染色体C带核型,即黑脸油葫芦Teleogryllusoccipitalis(Serville,1838),2n=27,XO(♂);银川油葫芦T.infernalis(Saussure,1877),2n=27,XO(♂);迷卡斗蟋Velarifictorusmicado(Saussure,1877),2n=29,XO(♂);泰康棺头蟋Loxoblemmustaicoun(Saussure,1877),2n=17,XO(♂)及长颚斗蟋V.aspersus(Walker,1869)的核型即2n=23,XO(♂)。4种蟋蟀各染色体均显示强的着丝粒带,多数染色体显强或中的端带,斗蟋属(Velarifictorus)1种部分染色体显示居间带,油葫芦属(Teleogryllus)2种和棺头蟋属(Loxoblemmus)1种无居间带,各物种表现出明显的种类特异性。对蟋蟀染色体及C带核型在分类中的意义作了初步的探讨。

This is a report on the chromosome Cbanded karyotypes of four Gryllidae species in China.They are Teleogryllus occipitalis(Serville,1838),2n=27,XO(♂);T.infernalis(Saussure,1877),2n=27,XO(♂);Velarifictorus micado (Saussure,1877),2n=29,XO(♂);Loxoblemmus taicoun Saussure,1877,2n=17,XO(♂).And another karyotype is reported as well,it is V.aspersus(Walker,1869),2n=23,XO(♂).All chromosomes of the four crickets show strong paracentric Cbands,lots of the arms show strong or median terminal Cbands,and some chromosomes of V.micado show middle Cbands.In addition,the total heterochromatin content of the four crickets was shown.The cytotaxonomic significance is discussed.