The species concept in diatoms: Evidence for morphologically distinct, sympatric gamodemes in four epipelic species
The species concept in diatoms: Evidence for morphologically distinct, sympatric gamodemes in four epipelic species
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DOI：
10.1007/bf00940439
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发表时间：
1989-03
影响因子：
1.9
通讯作者：
D. Mann
中科院分区：
文献类型：
--
作者：
D. Mann
生活在一个小池塘里的四种表层硅藻物种在形态上截然不同的共域种群之间表现出生殖隔离。Pula Sellaphora pupua的6个雌体，其中4个是异交性的，1个可能是自交性的，1个明显是无性的，在大小、形状、纹状体密度和图案上都有不同的形态。在池塘中，Calone is silula、Cymatopleura solea和Neidium Amplium各有两个大小不同的异花授粉。在有性生殖的最早阶段，德米亚人之间的杂交存在内在的障碍。这样的配子体在分类学上可能是最好的分类方法。
Reproductive isolation is demonstrated between morphologically distinct, sympatric demes of four epipelic diatom species inhabiting a small pond. The six demes ofSellaphora pupula, four of them allogamous, one probably autogamous, and one apparently asexual, differ morphologically with respect to size, shape, stria density and pattern. In the pond,Caloneis silicula, Cymatopleura solea, andNeidium ampliatumeach contain two allogamous demes, differing principally in size. There are intrinsic barriers to hybridization between the demes, which operate at the earliest stages of sexual reproduction. Such gamodemes are perhaps best treated taxonomically as separate species.