Results 81 to 90 of about 2,003 (190)
Insect Conservation and Diversity, Volume 17, Issue 6, Page 1046-1071, November 2024.We quantified previously unstudied tritrophic gall communities on Fagaceae in Sichuan, China, testing for ‘bottom‐up’ effects of host plant diversity on plant–herbivore and plant–parasitoid interactions. We sampled 176 cynipid gall morphotypes from 23 host plant species, yielding 64 parasitoid morphospecies.
Zhiqiang Fang +18 more
wiley +1 more source
Biotechnology & Biotechnological Equipment, 2017 The chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) is one of the most important insect pests of chestnut. The aim of this study was to isolate and characterize bacteria from D.
Nurcan Albayrak Iskender +3 more
doaj +1 more source
Growing Chinese Chestnuts in Missouri (2012) [PDF]
, 2012 "Chinese chestnut is an emerging new tree crop for Missouri and the Midwest. The Chinese chestnut tree is a spreading, medium-sized tree with glossy dark leaves bearing large crops of nutri-tious nuts.
Gold, Michael Alan +3 more
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Ecography, Volume 2024, Issue 7, July 2024.Forests provide essential ecosystem services that range from the production of timber to the mitigation of natural hazards. Rapid environmental changes, such as climate warming or the intensification of disturbance regimes, threaten forests and endanger forest ecosystem services.
Roman Flury +7 more
wiley +1 more source
Japanese journal of applied entomology and zoology, 1964 千葉県習志野および神奈川県大山のクリタマバチ発生地において,1960年より1964年にいたる5年間の個体群密度の年次変動を調査した。その結果,1. クリタマバチ個体群は,成虫-若令幼虫の期間に最も大きな死亡率が見られ,この死亡率はクリタマバチの個体群密度の年次変動に最も大きな影響を与えている重要な要因であると考えられる。2. クリタマバチの加害によって寄主植物の若枝を出す数が減少すると,一芽当たりに産まれる卵数が増加するため若令幼虫期に高密度の悪影響が現われるらしい。また,これが頻繁に現われるようになると,個体群は減少しはじめる。3. 幼虫寄生蜂の作用は,個体群密度の年次変動にとって重要な働きをなしてはいないらしいことがわかった。
Masako NAKAMURA +4 more
openaire +3 more sources
Impact of the Asian Chestnut Gall Wasp, Dryocosmus kuriphilus (Hymenoptera, Cynipidae), on the Chestnut Component of Honey in the Southern Swiss Alps [PDF]
Journal of Economic Entomology, 2017 The Asian chestnut gall wasp (ACGW; Dryocosmus kuriphilus Yasumatsu, Hymenoptera, Cynipidae) is considered as one of the most dangerous pests of the genus Castanea. In southern Switzerland, repeated heavy ACGW attacks prevented chestnut trees from vegetating normally for years before the arrival and spread of the biological control agent Torymus ...
Gehring E +6 more
openaire +3 more sources
Psyche: A Journal of Entomology, 2018 Native parasitoids may play an important role in biological control. They may either support or hinder the effectiveness of introduced nonnative parasitoids released for pest control purposes.
Tiziana Panzavolta +6 more
doaj +1 more source
A new auxin-like active substance from chestnut crown gall [PDF]
, 1977 【要旨】1)クリの木Castanea conataにつくクリタマバチQryocosmus kuriphilusは，芽の正常な発育を阻害し，枝に虫えい（虫こぶ）を形成する.我々は，芽の肥大を引きおこす原因となる植物生長物質を見い出すために実験を進めた.2)虫えいには，ラミナジョイントテストによって，強いオーキシン活性物質が含まれている事を見い出した.SubstanceIと名づけられたこの物質は，色々なクロマトグラフを用いて無色・半固体状のものとして単離された.3)SubstanceIのオーキシン活性は ...
Ikeda Michimasa +2 more
core +1 more source
Systematic Entomology, Volume 49, Issue 3, Page 447-494, July 2024.We redefine the circumscription of Ormyridae based on a phylogenomic dataset and morphological reassessment. Based on the phylogenetic results and comparative morphological assessment, subfamilies are established for the first time. The results support the description of two new genera Halleriaphagus van Noort and Burks, gen.
Simon van Noort +8 more
wiley +1 more source
The bread tree: a primer on the culture of sweet chestnut (Castanea sativa Mill.) in Portugal [PDF]
, 2014 The European or sweet chestnut (Castanea sativa Mill.) is an important multipurpose tree that is much heralded in Portuguese history and culture, for both the quality of its wood and its exceptionally versatile nuts.
Bihun, Yurij +2 more
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