迷蛱蝶属及相关物种细胞色素b基因序列及其分子系统学研究

迷蛱蝶属Mimathyma隶属于蛱蝶科Nymphalidae闪蛱蝶亚科Apaturinae,该属所包含的种类复杂,其分类学地位存在争议.本文对迷蛱蝶属、闪蛱蝶属Apatura和带蛱蝶属Athyma7个种共19个个体的线粒体DNA细胞色素b基因部分序列进行测定分析,并以花斑螯蛱蝶Charaxes kahruba (Moore)作为外群用PAUP软件构建MP和NJ分子系统树.结果显示迷蛱蝶Mimathyma chevana(Moore)、夜迷蛱蝶Mimathyma nycteis(Ménétriès)、白斑迷蛱蝶Mimathyma schrenckii (Ménétriès)和环带迷蛱蝶Mimathyma ambica Kollar形成1个聚类簇,支持Moore将这4个种由闪蛱蝶属移出并建立迷蛱蝶属的观点.同时,尽管迷蛱蝶在形态上与该属其余3种相似,但研究发现聚类簇Ⅰ中夜迷蛱蝶、白斑迷蛱蝶和环带迷蛱蝶首先相聚,然后再与迷蛱蝶聚在一起,表明迷蛱蝶与这3种亲缘关系较远.此外,本文的研究结果还显示迷蛱蝶属与闪蛱蝶属关系密切,而与带蛱蝶属的关系较远.

PHYLOGENY OF MIMATHYMA BUTTERFLIES (LEPIDOPTERA, NYMPHALIDAE) INFERRED FROM PARTIAL CYTOCHROME B GENE SEQUENCES

The genus Mimathyma is one of the more controversial lineages of Apaturnae butterflies. We sequenced 432 bp of the mitochondrial cytochrome b gene from 19 individuals of seven species of the three genera: Mimathyma, Aptura and Athyma, and constructed the MP and the NJ trees using the Charaxes kahruba (Moore) as outgroup. The NJ and the MP phylogenetic trees show that M. chevana(Moore), M. nycteis (Ménétroès), M. schrenckii (Ménétriès) and M. ambica Kollar have closer relationship, supported the Moore's classification that these four species could be removed from the genus Apatura and included in the genus Mimathyma. M. chevana (Moore) appears to be the most distantly related to other species of the genus Mimathyma, despite of morphological similarity. In addition, our findings also indicate that the genus Mimathyma is more closely related to Apatura than Athyma.