Results 41 to 50 of about 10,759 (235)

Duftstoffe aus Holzalterungsprozessen als Infochemikalien für Trypodendron domesticum L. (Col., Scolytidae) und dessen Bedeutung innerhalb der Buchenkomplexkrankheit [PDF]

open access: yes, 2008
Beginning in Belgium 1999, low mountain ranges of middle Europe were afflicted with the “European beech bark disease” (EBBD). It was first described by Hartig in 1878 as a complex disease where infestation of beech scale (Cryptococcus fagisuga; Hemiptera,
Holighaus, Gerrit, Schütz, Stefan
core  

Host‐associated chemical cues mediating host‐finding behaviour in the larval ectoparasitoid Cephalonomia tarsalis

open access: yesPest Management Science, EarlyView.
Host‐associated volatiles mediate host location in Cephalonomia tarsalis, with faecal odours from fourth‐instar larvae, particularly 1‐pentadecene, attracting females and supporting the biological control of stored‐product pest beetles. Abstract BACKGROUND Understanding how parasitoids locate their hosts is essential for improving the effectiveness of ...
Lidia del Arco   +3 more
wiley   +1 more source

Ozone‐driven degradation of sex pheromone in Plutella xylostella: Implications for reproductive communication and mating success

open access: yesInsect Science, EarlyView.
In this study, we examined whether realistic ozone concentrations can interfere with sexual communication in the insect pest Plutella xylostella, the diamondback moth. Ozone exposure caused a degradation of pheromone components, leading to significant changes in blend composition and component ratios.
Francesco Sorrentino   +3 more
wiley   +1 more source

Catalyst-Free Synthesis of Novel 6-Phenyl-6-chromeno [4, 3-] quinoline Derivatives at RT: Their Further Structure Evaluation Leads to Potential Anti-cancer Agents

open access: yesNatural Product Communications, 2017
A variety of novel quinoline derivatives (6-phenyl-6 H -chromeno [4,3- b ] quinoline) have been prepared by using 4-chloro-2-phenyl-2 H -chromene-3-carbaldehyde and various substituted of aromatic anilines as starting materials. This is the first example
Alleni Suman Kumar   +8 more
doaj   +1 more source

Odour perception in the codling moth Cydia pomonella L. [PDF]

open access: yes, 2004
The codling moth, Cydia pomonella L. (Lepidoptera: Tortricidae) is a renowned pest in apple, pear and walnut orchards, and its activities are in large guided by volatile odours as sensory cues.
Ansebo, Lena
core  

Volatile phytochemicals as mosquito semiochemicals [PDF]

open access: yesPhytochemistry Letters, 2014
Plant biochemical processes result in the release of an array of volatile chemical substances into the environment, some of which are known to play important plant fitness enhancing functions, such as attracting pollinators, thermal tolerance of photosynthesis, and defense against herbivores.
Vincent O, Nyasembe, Baldwyn, Torto
openaire   +2 more sources

Attraction of Phoracantha mastersi (Coloeptera: Cerambycidae) to copulation‐associated olfactory stimuli

open access: yesAgricultural and Forest Entomology, EarlyView.
Damage caused by Phoracantha mastersi larvae are the primary cause of forest decline in Australia's subalpine forests. Behaviour of male adult beetles was tested in response to a suite of commercial semiochemicals and conspecifics engaged in active copulation within a Y‐maze.
Matthew Theodore Brookhouse   +3 more
wiley   +1 more source

Semiochemicals Used by Insect Parasitoids and Hyperparasitoids in Complex Chemical Environments and Their Application in Insect Pest Management

open access: yesHorticulturae
Insect parasitoids are key biological agents within terrestrial ecosystems, offering a promising avenue for controlling insect pests. Hyperparasitoids are a group of insects that lay their eggs in or on the body of parasitoid hosts, which can greatly ...
Yalan Sun   +4 more
doaj   +1 more source

Host choice and host leaving in Rhopalosiphum padi (Hemiptera: Aphididae) emigrants and repellency of aphid colonies on the winter host [PDF]

open access: yes, 2000
Host choice and winter-host leaving in emigrants of bird cherry–oat aphid, Rhopalosiphum padi (Linnaeus), were investigated in the laboratory. In settling choice tests, emigrants collected from the winter host, Prunus padus, preferred this plant over ...
Glinwood, Robert, Petersson, J.
core   +1 more source

Sanitation felling against the European spruce bark beetle: A matter of intensity and forest type Tagli fitosanitari contro il bostrico tipografo: una questione di intensità e tipologia forestale

open access: yesAgricultural and Forest Entomology, EarlyView.
We assess the effect of sanitation felling performed in 2022 in North‐Eastern Italy on bark beetle damage that occurred in 2023 across eight spruce forest types, as evaluated using multispectral satellite imagery. Bark beetle damage was reduced only at very high or very low sanitation felling rates.
Aurora Bozzini   +5 more
wiley   +1 more source

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