Results 71 to 80 of about 2,484 (177)
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
Abstract BACKGROUND Chestnut fruit quality is affected by fungal contamination. The study of the patterns of contamination in the postharvest is crucial to individuate the critical phases and propose solutions. To understand how fungal colonization varies on fruits, the composition of mycobiota was investigated in postharvest handling and in between ...
Giorgia Bastianelli +3 more
wiley +1 more source
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
Rapid on-site identification of the biocontrol agent of the Asian chestnut gall wasp [PDF]
In classical biocontrol programmes, a rapid and correct identification of the introduced antagonist is a key issue during both the release and establishment monitoring phases. It is often difficult to distinguish morphologically cryptic species or immature stages. An accurate diagnosis can now be provided by molecular diagnostic methods.
Colombari F +7 more
openaire +4 more sources
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
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
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
Abstract Premise Plant traits and insect herbivory have been highly studied within the modern record but only to a limited extent within the paleontological. Preservation influences what can be measured within the fossil record, but modern methods are also not compatible with paleobotanical methods.
Lauren Azevedo‐Schmidt +1 more
wiley +1 more source
The Asian chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu, is one of the most serious pests of Castanea spp. worldwide. Since local parasitoids did not effectively control this exotic pest, the Chinese parasitoid Torymus sinensis Kamijo was released ...
C. Ferracini +12 more
semanticscholar +1 more source
Numerical Simulation of the Biological Control of the Chestnut Gall Wasp with T. Sinensis. [PDF]
Portugal is a country that produces chestnuts. However, in recent years, a D. kuriphilus plague has invaded chestnut trees and signi cantly afected the chestnut production. Studies in other countries, such as Japan or Italy, have shown that the T. sinensis parasitoid can achieve biological control and help to eradicate the invader.
Balsa, Carlos +3 more
openaire +1 more source

