How do insect seed predators adapt to general flowering in Southeast Asian tropical rainforests?

昆虫种子捕食者如何适应东南亚热带雨林的普遍开花？

• 批准号: 24870022
• 负责人: HOSAKA Tetsuro
• 金额: $ 1.91万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-08-31 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24870022/
• 关键词: 植物―昆虫相互作用; フタバガキ; ゾウムシ; 種子食者飽食仮説; マレーシア; 生態学; 植物; 昆虫; 進化; 熱帯雨林; フタバガキ科; 国際研究者交流

Dipterocarp trees in Southeast Asia are known to flower and fruit every 2 to 10 years. In the present study, how insect seed predators on dipterocarps adapt to the largely fluctuated seed production of dipterocarps was examined. Molecular phylogeny of the seed weevils showed that closely-related weevils did not always use closely-related dipterocarp species. This implies that weevils might have altered or expanded their hosts to deal with the unpredictable seeding phenology. Also, there were two types of weevil larvae in seeds of dipterocarps; one emerged as adults soon after fruit-fall while the other remains as larvae more than one years. This implies that some larvae have dormancy to survive during non-fruiting period.

东南亚的龙脑香树每2至10年开花和结果。本文研究了龙脑香种子天敌对龙脑香种子生产波动的适应性。种子象甲的分子遗传学研究表明，近缘象甲并不总是使用近缘的龙脑香种。这意味着象鼻虫可能已经改变或扩大了它们的宿主，以应对不可预测的播种物候。龙脑香种子中的象甲幼虫有两种类型，一种在落果后不久即以成虫出现，另一种则以幼虫存在一年以上。这说明有些幼虫在非结果期有休眠现象。

项目成果

Effects of 50 years of selective logging on demography of trees in a Malaysian lowland forest

50 年的选择性采伐对马来西亚低地森林树木数量的影响

• DOI: 10.1016/j.foreco.2013.08.057
• 发表时间: 2013
• 期刊: Forest Ecology and Management
• 影响因子: 3.7
• 作者: Yamada;T.;Hosaka;T.;Okuda;T.;Kassim;A. R.
• 通讯作者: A. R.

一斉開花する森林の地理的パターンはどのように決定されるか？

森林同时开花的地理格局是如何决定的？

• 发表时间: 2013
• 作者: 川上広宣;片山勉;保坂 哲朗;沼田真也
• 通讯作者: 沼田真也

Effects of logging road networks on the ecological functions of dung beetles in Peninsular Malaysia

• DOI: 10.1016/j.foreco.2014.04.004
• 发表时间: 2014-08
• 期刊: Forest Ecology and Management
• 影响因子: 3.7
• 作者: T. Hosaka;Masahiro Niino;M. Kon;T. Ochi;T. Yamada;C. Fletcher;T. Okuda

General flowering of dipterocarps and seed predatory insects in Malaysia

马来西亚龙脑香科植物和种子捕食性昆虫的一般开花情况

• 发表时间: 2014
• 作者: 岸香苗;小沼健;西田宏記.;Tetsuro Hosaka
• 通讯作者: Tetsuro Hosaka