Effects of reproductive systems on creation and maintenance of species diversity in Dipterocarpaceae

生殖系统对龙脑香科物种多样性创造和维持的影响

基本信息

批准号：
15255005
负责人：
YAMAKURA Takuo
金额：
$ 25.96万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15255005/
关键词：
tropical rain forest Dipterocarpaceae species diversity niche divergence genetic drift genetic diversity molecular genetics Sarawak 分集団化大面積調査区

项目摘要

Genetic structure and niche divergence of Dipterocarpacea were studied in a tropical rain forest in Sarawak on the Island of Borneo, Malaysia in order to discuss the mechanisms of creation and maintenance of the high species diversity of Dipterocarpaceae. Major results are the followings.1. Novel microsatellite genetic markers were developed in Dryobalanops aromatica, a bee-pollinated emergent free species. Using these markers, genetic structure and reproductive ecology of D.aromatica were studied for a population in a 52-ha long-term ecological plot in Lambir Hills National Park Sarawak Estimated outcrossing rates were high (0.72-1.00), and pollen dispersal distances were fairly long (mean : 179.6-355.7 m). No clear spatial genetic structure was found in the adults of the study population probably due to the high outcrossing rates and log pollen dispersal distances. Shorea curtisii, a beetle-pollinated species, neither showed clear spatial genetic structure in the same forest.2. Neste … More d clade analysis based on difference in chloroplast DNA sequence among 6 species of the genus Dryobalanops revealed a presence of spatial genetic structure at the regional scale in Sarawak and the Malay peninsular Haplotype diversity was highest at the central part of Sarawak, and an ancestral haprotype was found in this region, suggesting that the central Sarawak was the center of the divergence of DryobaLanps. Two sympatric species of the Lambir forest, D.aromatica and D.lanceolata, were gnenetically most apart within the genus.3. The third census of the 52-ha long-term ecological plot of Lambir Hills National Park was completed. All the trees with 1 cm dbh and larger were measured, and a database was established. Using this database, habitat niche analysis was conducted for 788 tree species including species of Dipterocarpaceae. Of the species analyzed, 88% were habitat specialists whose spatial distributions were significantly skewed to species specific habitats. Degree of habitat divergence between species of Dipterocarpaceae was significantly higher than that for all species pairs, suggesting that Dipterocarpaceae was the family that included highly divergent species in terms of habitat. Less

在马来西亚婆罗洲岛上的砂拉越的热带雨林中，二甲状腺皮甲曲霉的遗传结构和利基差异是研究的，以讨论二甲状腺癌的高物种多样性的创造和维持的机制。主要结果是以下1。新型的微卫星遗传标记是在Dryobalanops aromatoma中开发的，这是一种蜜蜂 - 授粉的新兴物种。使用这些标记，研究了D. aromatoma的遗传结构和生殖生态学，该人口在Lambir Hills National Park Sarawak的52-HA长期生态图中进行了研究，估计估计脱落率很高（0.72-1.00），并且花粉扩散距离很长（平均：179.6-3555.7 m）。在研究人群的成年人中未发现明确的空间遗传结构，这可能是由于截面率高和对数花粉扩散距离所致。 Shorea curtisii是一种甲虫 - 授粉的物种，在同一森林中都没有表现出清晰的空间遗传结构。2。 NESTE…基于叶绿体DNA序列的差异的更多D进化群分析显示，砂拉越的区域尺度上存在空间遗传结构，而马来半岛单倍型多样性在砂拉越的中部是最高的，砂拉越的中部是砂拉越的中部，并且在这个地区发现了一个祖先的萨拉氏型，这是萨拉氏型的中心。 Lambir森林的两种同胞物种，D.AROMATIA和D.LANSEOLATA在该属中最分开。3。 Lambir Hills国家公园的52-HA长期生态阴谋的第三次人口普查完成了。测量所有具有1 cm dbh及更大的树木，并建立一个数据库。使用此数据库，对788种树种进行了栖息地细分分析，其中包括二甲状腺科的种类。在分析的物种中，有88％是栖息地专家，其空间分布明显偏向于特定物种的栖息地。双翅类科的种类之间的栖息地差异明显高于所有物种对的栖息地，这表明双甲状腺科是在栖息地中包括高度不同物种的家族。较少的