Results 21 to 30 of about 18,589 (207)

Evaluating Vector-Virus-Yield Interactions for Peas and Lentils under Climatic Variability: A Limited Dependent Variable Analysis

open access: yesJournal of Agricultural and Resource Economics, 2011
This study examines the effects of climatic conditions on interactions among pea and lentil yields, pea aphid Acyrthosiphon pisum (Harris) infestations, and outbreaks of PEMV (Pea enation mosaic) and BLRV (Bean leaf roll) viruses in the Palouse region of
Levan Elbakidze   +2 more
doaj   +1 more source

Diurnal Sampling of the Insect Complex of Alfalfa [PDF]

open access: yes, 2017
The appearance of the alfalfa weevil, Hypera postica (Gyllenhal), in Michigan in 1966 (Dowdy 1966) necessitated intensive testing of methods for its control.
Ruppel, Robert F
core   +2 more sources

Evaluation of the susceptibility of the pea aphid, Acyrthosiphon pisum, to a selection of novel biorational insecticides using an artificial diet [PDF]

open access: yes, 2009
An improved technique was developed to assay the toxicity of insecticides against aphids using an artificial diet. The susceptibility of the pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphidoidea) was determined for a selection of novel ...
Sadeghi, Amin   +2 more
core   +2 more sources

Seasonal dynamics and entomophthoralean infection of the pea aphid, Acyrthosiphon pisum Harris

open access: yesPlant Protection Science, 2001
The seasonal dynamics of the pea aphid, Acyrthosiphon pisum Harris, and entomopathogenic fungi from the order Entomophthorales attacking the aphid were analysed in alfalfa and field pea crops during the growing seasons of 1998 and 1999 at Nitra-Malanta ...
Ľudovít Cagáň, Marek Barta
doaj   +1 more source

Insecticidal activity of a protein extracted from bulbs of Phycella australis Ravenna against the aphids Acyrthosiphon pisum Harris and Myzus persicae Sulzer [PDF]

open access: yes, 2016
Aphids cause significant losses in many agricultural crops and in many cases cause repeated insecticide sprays, which increase the risk of resistance. Therefore, other alternatives are needed to control them.
Devotto, Luis   +4 more
core   +2 more sources

Effects of Endosymbiont Disruption on the Nutritional Dynamics of the Pea Aphid Acyrthosiphon pisum

open access: yesInsects, 2018
Pea aphid (Acyrthosiphon pisum) is a worldwide pest that feeds exclusively on the phloem sap of numerous host plants. It harbours a well-known primary endosymbiont Buchnera aphidicola that helps to overcome the nutritional deficiency of a plant-based ...
Ning Lv   +4 more
doaj   +1 more source

A highly infective plant-associated bacterium influences reproductive rates in pea aphids [PDF]

open access: yesRoyal Society Open Science, 2016
Pea aphids, Acyrthosiphon pisum, have the potential to increase reproduction as a defence against pathogens, though how frequently this occurs or how infection with live pathogens influences this response is not well understood.
Tory A. Hendry   +2 more
doaj   +1 more source

Silencing of two insulin receptor genes disrupts nymph-adult transition of alate brown citrus aphid [PDF]

open access: yes, 2017
Insulin receptors play key roles in growth, development, and polymorphism in insects. Here, we report two insulin receptor genes (AcInR1 and AcInR2) from the brown citrus aphid, Aphis (Toxoptera) citricidus.
Ding, Bi-Yue   +7 more
core   +2 more sources

Temperature Effects on Development of Three Cereal Aphid Parasitoids (Hymenoptera: Aphidiidae) [PDF]

open access: yes, 2017
Temperature is an important climatological variable that influences the biology and ecology of insects. Poor climatic adaptation can limit the effectiveness of parasitic insects in biological control.
Burd, J. D   +3 more
core   +3 more sources

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