Genetic differentiation, behavioural reproductive isolation and mixis cues in three sibling species of monogonont rotifers.
Genetic differentiation, behavioural reproductive isolation and mixis cues in three sibling species of monogonont rotifers.
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单角轮虫三个兄弟物种的遗传分化、行为生殖隔离和混合线索。
DOI：
10.1111/j.1365-2427.2010.02487.x
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发表时间：
2010
影响因子：
2.7
通讯作者：
Walsh,ElizabethJ
中科院分区：
文献类型：
--
作者：
Schröder,Thomas;Walsh,ElizabethJ
1.许多通常被认为是“世界性”的水生物种，根据深层遗传分化，已被确定为神秘物种复合体。 然而，在兄弟姐妹隐种之间的生殖隔离研究很少，种间杂交在某些类群中是常见的。2.我们研究了在温带洪泛平原、亚热带沙漠岩池和热带高山湖泊这三种淡水生境中发现的三种周期性孤雌生殖轮虫之间的隔离机制和可能的渐渗。 3.虽然生殖隔离不完全，但RAPD图谱显示了独特的遗传特征，没有显示出渐渗的证据，表明这三个物种正在分化，具有独立的进化优势。4.测试这些循环孤雌生殖体的有性生殖线索表明，奇瓦瓦埃尼和尤克埃尼的混合受到种群密度的影响，而夏威夷埃尼雌体很少产生混合后代，无论密度如何。 不同的混合线索可能会分开性周期，并有效地导致物种之间的生殖隔离。Epiphanes ukeraandE.chihuahuaensismales显示配偶守卫行为，而E.ukeramales在配偶选择实验中区分同种和异种雌性。地理隔离，沿着不同的混合诱导和配偶识别的线索，作为这些兄弟物种之间的生殖障碍。
1. Many aquatic species usually considered to be ‘cosmopolitan’ have been identified as cryptic species complexes, based on deep genetic differentiation. However, reproductive isolation among sibling cryptic species has rarely been studied, and interspecific hybridisation is common in some taxa.2. We investigated isolation mechanisms and possible introgression among three cyclical parthenogenetic rotifer species in theEpiphanes sentacomplex that are found in very different freshwater habitats: temperate floodplains, subtropical desert rock pools and a tropical alpine lake. WhereasEpiphanes ukerais reproductively isolated fromE.chihuahuaensisandE.hawaiiensis, the latter hybridise under laboratory conditions.3. While reproductive isolation is incomplete, RAPD profiles indicated unique genetic signatures and showed no evidence for introgression, indicating that these three species are diverging and have independent evolutionary trajectories.4. Testing cues for sexual reproduction in these cyclic parthenogens demonstrated that mixis inE. chihuahuaensisandE. ukerais influenced by population density, whereasE. hawaiiensisfemales rarely produce mictic offspring regardless of density. Different mixis cues are likely to separate sexual periods and effectively cause reproductive isolation between the species.Epiphanes ukeraandE.chihuahuaensismales display mate‐guarding behaviour, andE.ukeramales distinguish between conspecific and heterospecific females in mate‐choice experiments. Geographic isolation, along with different cues for mixis induction and mate recognition, acts as reproductive barrier among these sibling species.
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影响因子：
3.3
作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
通讯作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
DOI：
10.1098/rstb.2008.0055
发表时间：
2008-09-12
期刊：
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子：
--
作者：
Schwenk K;Brede N;Streit B
通讯作者：
Streit B
影响因子：
4.9
作者：
Gomez, Africa;Montero-Pau, Javier;Campillo, Sergi
通讯作者：
Campillo, Sergi
轮虫 Epiphanes senta 交配前的交配保护和交配行为（Monogononta：轮虫纲）
DOI：
--
发表时间：
2003
期刊：
Proceedings of the Royal Society of London. Series B: Biological Sciences
影响因子：
--
作者：
T. Schröder
通讯作者：
T. Schröder
形态相似的近亲 Skistodiaptomus（桡足类：Calanoida：Diaptomidae）之间的深刻遗传差异挑战了更新世物种形成的假说
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
R. Thum;R. Harrison
通讯作者：
R. Harrison