Study on mechanisms generating community diversity at the globe level with special reference to food web structure

2017 Fiscal Year Final Research Report

• Project/Area Number: 26550087
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental and ecological symbiosis
• Research Institution: The University of Tokyo
• Principal Investigator: KAMATA NAOTO 東京大学, 大学院農学生命科学研究科(農学部), 教授 (90303255)
• Research Collaborator: MURAKAMI MASASHI 千葉大, 大学院理学系研究科, 准教授 ; Vojtech Novotny チェコ科学アカデミー, 生物学センター, 教授 ; Rajesh Kumar インドエリ蚕ムガ蚕研究研修所, ジョルハット支所, 研究者D ; Martin Volf チェコ科学アカデミー, 生物学センター, 博士研究員 ; Martin Libra 南ボヘミア大学, 理学部 ; ABE HARUKA 千葉大, 大学院理学系研究科 ; FUKUSHIMA HIRONARI 千葉大, 大学院理学系研究科 ; ABE TOMOKAZU 東京大学, 大学院農学生命科学研究科 ; Roll Lilip ニューギニア, 昆虫研究所, 研究員
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 多様性 / ゴール形成昆虫 / 系統樹 / 植食者 / 自由摂食性昆虫 / 潜葉性昆虫 / スペシャリスト / ジェネラリスト

Outline of Final Research Achievements

We aim to quantify the effects of host phylogeny on the structure of quantitative plant herbivore food webs. We studied herbivore assemblages in three temperate forests in Japan and the Czech Republic. Leaf chewer generality has been maintained by feeding on confamilial hosts while only a few herbivores were shared between more distant plant lineages and, surprisingly, between some congeneric hosts. In contrast, miner and galler generality was maintained mainly by the terminal nodes of the host phylogeny and dropped immediately after collating congeneric hosts into single lineages. In the case of generalist guilds, it is the phylogeny of deeper plant lineages that drives the food web structure whereas the terminal relationships play minor roles. In contrast, the specialization and abundance of monophagous guilds are affected mainly by the terminal parts of the plant phylogeny and do not generally reflect deeper host phylogeny.

Free Research Field

昆虫生態学