Results 101 to 110 of about 8,813 (234)

Evaluating Syrphid Fly Predation on Aphids Under Controlled and Field Conditions in High Tunnels: A Comparative Study With Lacewings

open access: yesJournal of Applied Entomology, Volume 150, Issue 6, Page 693-705, July 2026.
ABSTRACT Biological control in high tunnel systems can be optimised by matching predator species to seasonal environmental conditions. We evaluated the predatory efficacy of syrphid flies (Toxomerus marginatus (Say), Eupeodes americanus (Fabricius)) and lacewings (Chrysoperla carnea (Stephens), Chrysoperla rufilabris (Burmeister)) across laboratory ...
Allison Zablah   +3 more
wiley   +1 more source

Studies on the feeding of Myzus persicae (Sulz.) on radioactive plants

open access: yes, 1953
Adult apterae of Myzus persicae (Sulz.), were fed, after a period of fasting, on leaves containing radioactive phosphorus. The weight of sap imbibed by the aphids after varying feeding times was estimated by relating their radioactivity, at the end of ...
Watson, M. A., Nixon, H. L.
core   +1 more source

Ovicidal and Insecticidal Activities of Pyriproxyfen Derivatives with an Oxime Ester Group

open access: yesMolecules, 2017
Based on the structural framework of a pyriproxyfen metabolite, nineteen oxime ester derivatives were synthesized via reaction of the carboxylic acids with 4-(2-(2-pyridinyloxy)ethoxy)benzaldehyde oxime.
Guo-Shao Sun   +4 more
doaj   +1 more source

Bioassay and field-simulator studies of the efficacy of pymetrozine against peach-potato aphids, Myzus persicae (Hemiptera: Aphididae), possessing different mechanisms of insecticide resistance

open access: yes, 2002
Twenty-one clones of the peach-potato aphid, Myzus persicae (Sulzer), carrying various combinations of known mechanisms of insecticide resistance were assessed for their response to the new pyridine azomethine compound, pymetrozine, in leaf-dip bioassays.
Foster, S. P., Denholm, I., Thompson, R.
core   +1 more source

Antimetabolic effects of plant proteins on homopteran insect pests [PDF]

open access: yes, 1993
Homopteran insect pests can cause severe economical damage to crop plants by both direct physical means and as vectors of plant viral diseases. They are notoriously difficult insects to control by conventional methods, primarily due to their ability to ...
Powell, K.S, Powell, Kevin Steven
core  

Spontaneous loss and reselection of resistance in extremely resistant Myzus persicae (Sulzer)

open access: yes, 1988
Modification of an immunoassay for detection of esterase-4 (E4), the enzyme conferring insecticide resistance in Myzus persicae, enabled further discrimination of extremely high levels of insecticide resistance (R3) from the very high levels (R2 ...
Ffrench-Constant, R. H.   +2 more
core   +1 more source

Studies on the transmission of sugar-beet yellows virus by the aphis, Myzus persicae (Sulz.) [PDF]

open access: yes, 1940
Previous studies on the relationship between plant viruses and their insect vectors have been carried out which viruses which are easily mechanically transmissible and whose vectors lose their infectivity within a few hours of removal from the source of ...
Watson, M. A.
core   +1 more source

Insecticidal activity of citronella grass essential oil on Frankliniella schultzei and Myzus persicae Atividade inseticida do óleo essencial de capim-citronela sobre Frankliniella schultzei e Myzus persicae

open access: yesCiência e Agrotecnologia, 2013
The thrips, Frankliniella schultzei, and green peach aphid, Myzus persicae, cause direct damage to plants of economic importance and transmit phytoviruses, causing large economic losses.
Patrícia Fontes Pinheiro   +5 more
doaj  

The effects of six species of aphids on some life history parameters of the ladybird Propylea quatuordecimpunctata (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2005
One of the factors affecting the effectiveness of predatory coccinellids in an aphid infested crop is the food specificity of the predator. The response towards six species of aphids (Sternorrhyncha: Aphididae) was therefore tested in one of the most ...
Plamen KALUSHKOV, Ivo HODEK
doaj   +1 more source

Field-simulator study of insecticide resistance conferred by esterase-, MACE- and kdr-based mechanisms in the peach-potato aphid, Myzus persicae (Sulzer)

open access: yes, 1999
Insecticide sprays were applied to Myzus persicae (Sulzer) populations carrying various combinations of three insecticide resistance mechanisms (esterase-based metabolic resistance and two target site mechanisms, known as MACE and kdr), supported on host
Foster, S. P., Devonshire, A. L.
core   +1 more source

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