Petitpierre Eduard, Elgueta Mario
Lab. Gencetica, Dept. Biologia, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain.
Folia Biol (Krakow). 2006;54(3-4):87-91. doi: 10.3409/173491606778557464.
Three species of Chilean leaf beetles were chromosomally analyzed. The endemic Araucanomela wellingtonensis displays a male meioformula of 13 + Xyp with 2n = 28 chromosomes and an asymmetric karyotype with two large autosome pairs and 12 medium/small pairs of autosomes and sex-chromosomes, a diploid number which had not been found among the other species of the subtribe Paropsina sensu lato studied to date. Strichosa eburata presents a meioformula of 11 + Xyp, 2n = 24 chromosomes, as occurs in many species of chrysomelines belonging to different subtribes. Furthermore, Phaedon cyanopterum has a 16 + Xyp meioformula, that is 2n = 34 chromosomes, of small size mostly, also in agreement with the karyological findings obtained in all the other congeneric species so far examined. These cytogenetic data are discussed with respect to the previous ones in this subfamily and with other characters of taxonomic and evolutionary value.
对三种智利叶甲进行了染色体分析。特有种威灵顿南洋叶甲的雄性减数分裂公式为13 + Xyp，有28条染色体，核型不对称，有两对大的常染色体和12对中/小常染色体及性染色体，这种二倍体数目在迄今为止研究的阔胫叶甲亚族其他物种中尚未发现。细纹胫叶甲的减数分裂公式为11 + Xyp，有24条染色体，许多不同亚族的叶甲科物种都是如此。此外，蓝翅毛萤叶甲的减数分裂公式为16 + Xyp，即有34条染色体，且大多尺寸较小，这也与迄今为止在所有其他同属物种中获得的核型学结果一致。结合该亚科先前的数据以及分类学和进化价值的其他特征，对这些细胞遗传学数据进行了讨论。
