Discovery of three new species of Drosophila obscura species group (Diptera: Drosophilidae) from Mount Kinabalu in Borneo

Discovery of three new species of Drosophila obscura species group (Diptera: Drosophilidae) from Mount Kinabalu in Borneo
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婆罗洲基纳巴卢山发现暗果蝇物种组的三个新种(双翅目:果蝇科)

DOI:
10.1111/j.1479-8298.2009.00332.x
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发表时间:
2009-09
影响因子:
0.9
通讯作者:
Toda, Masanori J.
Toda, Masanori J.
中科院分区:
农林科学4区
文献类型:
--
作者:
Tanabe, Shin-ichi;Gao, Jian-jun;Toda, Masanori J.

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本文描述了暗果蝇种组中的三个新种:暗果蝇D. hypercephala,D. hideakii和D. quadrangula Gao户田,spp.十一月,都是在马来西亚沙巴的京那巴鲁山的高海拔地区(1500米)发现的。这是该属最南端的分布记录。东方地区的暗纹组。这三个新物种在形态上都与旧大陆的不同物种相似。暗种亚组这表明它们是不同的创始物种的后代,这些物种在冰川时代独立地从亚热带或温带殖民到热带。新种D. hypercephala不仅在雄性中是头肥大的,而且在雌性中也是头肥大的,尽管不太明显,不像其他只有雄性是头肥大的果蝇物种。这一新发现的高头虫种来自Sophophora亚属,该亚属中的物种在实验室中相对容易培养,包括模式种如D。黑腹果蝇D. pseudobscura的发现,将有助于对头高畸形的发生和进化进行遗传学分析。
We describe three new species of the Drosophila obscura species group, D. hypercephala, D. hideakii and D. quadrangula Gao Toda, spp. nov., all discovered from high altitudes (1500 m) on Mt Kinabalu, Sabah, Malaysia. These are the southernmost distribution records of the D. obscura group in the Oriental Region. The three new species are each morphologically similar to different species of the Old World D. obscura species subgroup. This suggests that they are descendants of different founder species that independently colonized the tropics from the subtropical or temperate zones during the glacial ages. The new species D. hypercephala is hypercephalic not only in males but also, although less distinct, in females, unlike other hypercephalic drosophilid species in which only males are hypercephalic. This new finding of a hypercephalic species from the subgenus Sophophora, of which species are relatively easy to culture in the laboratory and include the model species such as D. melanogaster and D. pseudoobscura, will promote genetic analyses on the development and the evolution of hypercephaly.
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