Competitive exclusion among fig wasps achieved via entrainment of host plant flowering phenology.

Competitive exclusion among fig wasps achieved via entrainment of host plant flowering phenology.
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通过宿主植物开花物候的夹带实现无花果黄蜂之间的竞争排斥

DOI:
10.1371/journal.pone.0097783
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Chen XY
Chen XY
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Liu M;Zhao R;Chen Y;Zhang J;Compton SG;Chen XY

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分子技术揭示了越来越多的形态学相似但共存的密码,我们挑战了利基理论,我们研究了在形态上相似的物种的物体,这些物种在形态上汇集了蠕动的plosities,我们都在征服了一个或者是在众多的繁殖者中。 ,,,,我们使用粘性陷阱来捕获出现的无花果黄蜂,并使用线粒体DNA COI基因鉴定了我们的三个位点的F. Pumila个体。第二条无花果因此,很少有授粉片进入第三次,大部分时间都会流产,每年都有两代人的授粉,再加上部分的第三代早于Wiebesia SP。
Molecular techniques are revealing increasing numbers of morphologically similar but co-existing cryptic species, challenging the niche theory. To understand the co-existence mechanism, we studied phenologies of morphologically similar species of fig wasps that pollinate the creeping fig (F. pumila) in eastern China. We compared phenologies of fig wasp emergence and host flowering at sites where one or both pollinators were present. At the site where both pollinators were present, we used sticky traps to capture the emerged fig wasps and identified species identity using mitochondrial DNA COI gene. We also genotyped F. pumila individuals of the three sites using polymorphic microsatellites to detect whether the host populations were differentiated. Male F. pumila produced two major crops annually, with figs receptive in spring and summer. A small partial third crop of receptive figs occurred in the autumn, but few of the second crop figs matured at that time. Hence, few pollinators were available to enter third crop figs and they mostly aborted, resulting in two generations of pollinating wasps each year, plus a partial third generation. Receptive figs were produced on male plants in spring and summer, timed to coincide with the release of short-lived adult pollinators from the same individual plants. Most plants were pollinated by a single species. Plants pollinated by Wiebesia sp. 1 released wasps earlier than those pollinated by Wiebesia sp. 3, with little overlap. Plants occupied by different pollinators were not spatially separated, nor genetically distinct. Our findings show that these differences created mismatches with the flight periods of the other Wiebesia species, largely ‘reserving’ individual plants for the resident pollinator species. This pre-emptive competitive displacement may prevent long term co-existence of the two pollinators.
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