第九届国际苏铁保护生物学大会 The 9th International Conference on Cycad Biology (CYCAD 2011) Fairylake Botanical Garden, Shenzhen, P. R. China

    第九届国际苏铁生物学大会将于2011年12月1－7日举行，目的是为各位专家、学者、苏铁爱好者构筑高水平学术交流平台，使大家交流和分享苏铁学科研究的最新进展，促进苏铁生物学的研究和发展，推进苏铁保护事业。我们诚挚邀请各届人士积极参与，并以大会报告或展板的形式将自己的研究成果进行展现和交流。

征文范围：

• 遗传学和基因组学；
• 物种保育；
• 分类和系统发育；
• 生态学；
• 园艺学；
• 毒理学；
• 经济植物学；
• 信息管理。

摘要要求：

1）提交摘要时，须注明标题词“Cycad 2011 摘要”；

2）论文摘要集将包括每一摘要的中文和英文；请同时提供中、英文摘要。确实有困难者，可发送邮件至cycadchina@gmail.com，寻求帮助。

3）论文摘要用Word文档编辑，内容包括题目、作者、单位、摘要正文、关键词等。中文采用宋体，英文采用Times New Roman，作者和单位使用斜体。

4）当有多个作者时，请在拟报告人的右上角标出“*”，以便大会报告的安排；

5）英文单词不超过250个，中文不超过400字；

6) 应概括相关研究的主要内容，尽可能多的信息量；

7）请使用标准缩写，尽量避免特殊字符；

8）请参考后面的摘要示例。

摘要提交方式：

通过电子邮件提交摘要，请发送至 cycadchina@gmail.com

会议报告方式（中文和英文）

1）大会报告，采用PPT形式汇报，时间为40分钟，包括10分钟提问和讨论；

2）分会报告，采用PPT形式汇报，时间为20分钟，包括5分钟提问和讨论；

3）展板报告：每副展板尺寸为80(宽)x120（高）cm（需自行设计，将统一展出）；请务必确定好您的报告方式。

摘要示例

Population genetics of the recently endangered cycad, Cycas micronesica K.D. Hill

Angelica Cibrian Jaramillo *^1,3 , Eric Brenner¹, Thomas Marler², and Rob Desalle³¹The New York Botanical Garden, 200th St. and Southern Blvd, Bronx, NY, 10458, USA (acibrian@nybg.org) ²Western Pacific Tropical Research Center, College of Natural and Applied Sciences, University of Guam, Mangilao, Guam 96923, USA ³American Museum of Natural History, Sackler Institute for Comparative Genomics, Central Park West at 79th Street, NY, 10024, USA

We describe the population genetics of Cycas micronesica using EST-microsatellites and Bayesian approaches. This species is endemic to Guam and nearby Mariana Islands, and it is of evolutionary, ecological and medical importance. Its populations are currently being decimated by an insect scale (Aulacaspis yatsumatsui), which was introduced into Guam in 2003 and is now spreading to nearby islands. We are using a set of 25 EST-microsatellites developed from the closely related C. rumphii, tomeasure genetic variation and structure in C. micronesica, characterize morphological and chemical types, and identify populations that contribute significantly to contemporary gene flow within the island. We hope to define conservation genetic priorities, including sources for nurseries and translocations, provide insights of the evolutionary history of C. micronesica, and demonstrate the utility of genomic data for conservation and population genetics.

濒危苏铁Cycas micronesica的群体遗传学研究

Angelica Cibrian Jaramillo *^1,3 , Eric Brenner¹, Thomas Marler², and Rob Desalle³¹The New York Botanical Garden, 200th St. and Southern Blvd, Bronx, NY, 10458, USA (acibrian@nybg.org) ²Western Pacific Tropical Research Center, College of Natural and Applied Sciences, University of Guam, Mangilao, Guam 96923, USA ³American Museum of Natural History, Sackler Institute for Comparative Genomics, Central Park West at 79th Street, NY, 10024, USA

本文利用EST微卫星和贝叶思分析方法描述了Cycas micronesica的种群遗传学。该种仅分布在关岛和马利亚那群岛附近，在进化、生态和医学方面均具有重要价值。该种群正遭受介壳虫（Aulacaspis yatsumatsui）的严重蚕食。该虫于2003年传入关岛，目前已扩散至临近岛屿。通过应用从近似种C. rumphii提取的25个EST微卫星位点，本文研究了C. micronesica的遗传变异和结构特征，描述不同的形态型和化学型，并识别与岛内现存基因流密切相关的C.micronesica的不同种群。本文旨在为园艺和移栽确定优先保存种群，探究C.micronesica的演化历史，以及展示基因组数据在物种保育和群体遗传学上的运用。

Population ecology of two Mexican cycads with two types of endemism.

Dánae Cabrera-Toledo*, Jorge González-Astorga, y Andrew Vovides. Dept. de Biología Evolutiva, Instituto de Ecología, A.C., Apdo Postal 63, Xalapa,Veracruz, 91000 MEXICO.

Dioon caputoi, is one of the more geographic restricted species within the genus also with the smaller populations. It is located in just a few locations in Puebla State in México. Dioon merolae, possess a wider distribution, with bigger populations and is allopatric to D. caputoi. D. merolae, has near to ten populations distributed in Oaxaca and Chiapas. We compared the variation and genetic structure of both species with the objective to investigate if D. caputoi possess lower levels of genetic variation for being an endangered species. Ten loci were compared between them and we obtained the following results for D. caputoi vs D. merolae respectively: percentage of polymorphism (P) of 76% vs 82.8%; average number of alleles per locus (A) of 1.8 vs 2.1 and expected heterozygosity (HE) of 0.32 vs 0.47. A phenetic structure of FST = 0.096 for D. caputoi and FST = 0.065 for D. merolae. Combined with the genetic study we visited two populations of D. caputoi over four years to take demographic data which was useful to sustainable management decisions.

墨西哥两种特有分布类型苏铁的居群生态学研究

Dánae Cabrera-Toledo*, Jorge González-Astorga, y Andrew Vovides. Dept. de Biología Evolutiva, Instituto de Ecología, A.C., Apdo Postal 63, Xalapa, Veracruz, 91000，墨西哥。
Dioon caputoi 仅在墨西哥的Puebla州有几个分布产地，是双子铁属中分布区狭窄、居群较小的物种之一。而Dioon merolae 则分布较广，具有较大的种群面积，并与D. caputoi 在分布上有一定程度的重叠。D. merolae在Oaxaca和Chiapas分布有近10个种群。本文旨在通过比较这两个种的遗传变异和结构，从而确定D.caputoi作为濒危物种是否具有较低水平的遗传变异。通过比较D. caputoi和D. merolae的这两个物种的十个地点的研究材料，我们得出以下结论：两种材料的多态性比例分别为76%与82.8%；每个位点的等位基因平均数为1.8和2.1，预期杂合度分别为0.32和0.47；表型结构参数FST分别为0.096和0.065。结合遗传学研究，我们对D.caputoi的两个种群进行了为期四年的调查，以期得到对可持续管理决策有用的样本统计数据。

Effects of habitat degradation on the within- and between-population genetic structure of a rainforest Zamia.

Cristina López-Gallego, Instituto de Biología, Universidad de Antioquia, COLOMBIA.(clopezgallego@gmail.com )

Populations of Zamia fairchildiana exposed to fragmented and degraded forest habitats differ in some life-history traits from populations in their native, undisturbed habitat.I explored how changes in life-history may affect the distribution of genetic variation within and between populations from these habitats. Changes in reproductive patterns and the effective population size in degraded-habitat populations were associated with genetic differences like higher inbreeding and a more random distribution of genotypes at a fine geographical scale. In contrast to the differing distribution patterns of genetic variation within populations, the levels of genetic variation were similar among populations from native and degraded habitats, and the genetic differentiation at neutral molecular markers was very low among populations from these two habitats. Nevertheless, differing patterns of natural selection and the presence of genetic variation for ecologically-relevant traits suggest that habitat degradation can promote adaptive genetic differentiation between populations in the short-term. These results suggest that habitat degradation can have major effects on the evolutionary dynamics of this cycad, and even result in significant evolutionary change in degraded-habitat populations. This information is relevant for management and conservation, as it relates to the distribution of genetic variation in the populations and ultimately to population viability.

生境退化对雨林下泽米种群遗传结构的影响

Cristina López-Gallego

Instituto de Biología, Universidad de Antioquia, 哥伦比亚 (clopezgallego@gmail.com )

与原栖息地未受干扰的居群相比，生境受到破碎化和退化干扰的Zamia fairchildiana种群呈现出不同的生活史特征。本文探讨了这些生活史变化是如何影响居群内及居群间遗传变异的分布。结果表明，生殖方式的改变以及退化生境居群的有效居群大小与遗传差异有关，包括高度的近亲交配和基因型的随机分布。与居群内遗传变异分布的差异相比，原生境和退化生境的居群遗传变异水平相似，且中性分子标记遗传分化极低。然而，自然选择的不同方式以及生态学特征表现出的遗传变异表明，生境退化能够在短期内引起居群间适应性的遗传分化。以上结果证明，生境退化可对Zamia fairchildiana的进化动力学过程产生主要影响，甚至导致生境退化居群发生进化上的显著改变。该结论揭示了不同生境下居群遗传变异的分布规律，并最终保证了居群的生存能力，为该类植物的管理和保育提供理论依据。