Results 71 to 80 of about 25,173 (213)

Aphid honeydew: An arrestant and a contact kairomone for Episyrphus balteatus (Diptera: Syrphidae) larvae and adults

open access: yesEuropean Journal of Entomology, 2014
Predator searching efficiency increases in response to a variety of environmental cues associated with its prey. The sugary excretion of aphids (honeydew) has been found to act as a prey-associated cue for many aphid natural enemies. In the present study,
Pascal D. LEROY   +6 more
doaj   +1 more source

The effects of a synthetic insecticide and a mineral oil on alfalfa insect pests [PDF]

open access: yesPesticidi i Fitomedicina, 2018
The effects of the synthetic insecticide Eforia 043 ZK (thiamethoxam+lambdacyhalothrin), applied alone and at 1/5 and 2/5 reduced doses in a mix with the mineral oil Akarzin, on Tychius flavus Beck.
Mitkova Nikolova Ivelina   +1 more
doaj   +1 more source

RNA activation in insects: From emerging evidence to molecular applications

open access: yesInsect Molecular Biology, EarlyView.
Canonical RNA activation involves small RNAs interacting with promoter sequences, but there is also evidence of non‐canonical RNAa in eukaryotes. Emerging evidence suggests the presence of RNAa in insects. RNAa can be utilised as a tool for functional genomic studies in insects.
Sassan Asgari
wiley   +1 more source

Diapause in the pea aphid (Acyrthosiphon pisum) is a slowing but not a cessation of development [PDF]

open access: yesBMC Developmental Biology, 2003
Many insects undergo a period of arrested development, called diapause, to avoid seasonally recurring adverse conditions. Whilst the phenology and endocrinology of insect diapause have been well studied, there has been comparatively little research into the developmental details of diapause. We investigated developmental aspects of diapause in sexually-
Shingleton, Alexander W   +2 more
openaire   +2 more sources

The Influence of Lead on Generation of Signalling Molecules and Accumulation of Flavonoids in Pea Seedlings in Response to Pea Aphid Infestation

open access: yesMolecules, 2017
The aim of this study was to investigate the effect of an abiotic factor, i.e., lead at various concentrations (low causing a hormesis effect and causing high toxicity effects), on the generation of signalling molecules in pea (Pisum sativum L.
Agnieszka Woźniak   +8 more
doaj   +1 more source

Differential Varietal Responses in Faba Bean Concerning Pea Aphid and Pea Necrotic Yellow Dwarf Virus (PNYDV) When Intercropped With Oat

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT The pest status of pea aphid (Acyrthosiphum pisum H.) in faba bean (Vicia faba L.) cultivation has gained importance because it transmits Pea necrotic yellow dwarf virus (PNYDV), a novel nanovirus in Europe. This study evaluated two faba bean varieties, ‘Fuego’ and ‘GL Sunrise’, grown under sole crop (SC) and intercrop (IC) conditions with oat
Ahmed Berawe   +3 more
wiley   +1 more source

Aphidius eadyi n. sp. (Hymenoptera: Aphidiidae), a widely distributed parasitoid of the pea aphid, Acyrthosiphon pisum (Harris) in the Palearctic

open access: yes, 1980
Aphidius eadyi n. sp., a parasitoid of Acyrthosiphon pisum in the west Palearctic is described. Its distribution and interspecific relations (crossing experiments) to a related species, Aphidius smithi, are elucidated.
Jack Hall, Dan González, Petr Stary
core   +1 more source

Dichotomous Key to Pea Aphid (Acyrthosiphon pisum) Apterous Parthenogenic Instars [PDF]

open access: yes, 2016
We provide a dichotomous key, with photographs and illustrations, for distinguishing between instars of the pea aphid (Acyrthosiphon pisum) in the developmental pathway leading to the apterous parthenogenetic adult. Lengths of body, antenna and cauda are
Levitis, Daniel   +2 more
core   +1 more source

Aphid Resistance in Pulse Crops: Sources, Mechanisms, Genetics and Breeding

open access: yesLegume Science, Volume 8, Issue 4, December 2026.
ABSTRACT Aphids are major pests of pulse crops, causing damage through phloem sap feeding and virus transmission. In this context, resistant varieties are central components of sustainable aphid management. This review synthesizes current knowledge on resistance sources, phenotyping strategies, resistance mechanisms, genetic control and breeding ...
Francisco A. Mendes   +3 more
wiley   +1 more source

Genes of Acyrthosiphon pisum, pea aphid reconstructed with EvidentialGene

open access: yes, 2011
The evigene_aphid_acypi2011 archive package contains a complete, reconstructed gene set of Acyrthosiphon pisum, pea aphid, produced with EvidentialGene methods.
Gilbert, Don
core   +1 more source

Home - About - Disclaimer - Privacy