Results 11 to 20 of about 1,190 (202)

Role of nitrogen content of pea (Pisum sativum L.) on pea aphid (Acyrthosiphon pisum Harris) establishment [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2008
The leaf nitrogen content is generally accepted as an indicator of food quality and as a factor affecting host selection by phytophagous insects. The alate pea aphids (Acyrthosiphon pisum Harris, Aphididae) were given a choice among non-nodulated pea ...
Moravvej, Gh.H.
doaj   +2 more sources

Predators of the Alfalfa Aphids Acyrthosiphon pisum (Harris), Aphis craccivora Koch, and Therioaphis trifolii (Monell) (Hemiptera: Aphidoidea) as Determined by the Serological Technique

open access: yesEntomoBrasilis, 2016
Predators of the Alfalfa Aphids Acyrthosiphon pisum (Harris), Aphis craccivora Koch,and Therioaphis trifolii (Monell) (Hemiptera: Aphidoidea) as Determined by the Serological Technique Abstract.
Suzan Beatriz Zambon da Cunha   +3 more
doaj   +3 more sources

FUNCTIONAL RESPONSE OF Nabis punctipennis Blanchard to Acyrthosiphon pisum Harris IN THE LABORATORY [PDF]

open access: yesChilean journal of agricultural & animal sciences, 2017
ABSTRACT This study analyzed the predatory behavior of adult females of Nabis punctipennis Blanchard (Nabidae) towards Acyrthosiphon pisum Harris (Aphididae) in the laboratory in order to determine its functional response and potential as a biological control agent of this aphid. Both hemipterans are common in alfalfa, Medicago sativa L., in Chile. The
Campos, Verónica, Araya, Jaime E.
openaire   +4 more sources

Effect of Host-plant on the Resistance of Acyrthosiphon pisum (Harris) to Insecticides

open access: yesBulletin of Entomological Research, 1957
SummaryBy means of a laboratory spraying technique, ten comparisons were made of the resistance to rotenone of samples of adult apterous viviparous parthenogenetic females of the Pea Aphid, Acyrthosiphon pisum (Harris), reared on broad bean and on clover, respectively.
Potter, C., Gillham, E. M
openaire   +2 more sources

Micromorphology of the model species pea aphid Acyrthosiphon pisum (Hemiptera, Aphididae) with special emphasis on the sensilla structure [PDF]

open access: yesThe European Zoological Journal, 2020
The pea aphid complex [Acyrthosiphon pisum (Harris 1776)] (Hemiptera, Aphididae), listed among the 14 aphid species of the greatest economic importance, is a globally distributed key pest of pulse crops.
M. Kanturski   +4 more
doaj   +2 more sources

Discharge of Conidia of Entomophthora thaxteriana Petch from the Pea Aphid Acyrthosiphon pisum Harris [PDF]

open access: yesJournal of General Microbiology, 1971
SUMMARY: At 21°, conidia of Entomophthora thaxteriana were first discharged from infected pea aphids about 6 to 9 h. after the aphids died and the rate of discharge was highest during a short period about 9 h. later. In constant light, the rate then decreased and discharge ended about 36 h. after an infected aphid died; in constant darkness the maximum
Wilding, N.
openaire   +3 more sources

The Efficacy of Biological Control for the Suppression of the Pea Aphid (Acyrthosiphon Pisum): Does the Resistance of Alfalfa Cultivars Matter? [PDF]

open access: yesInsects, 2022
The pea aphid, Acyrthosiphon pisum Harris, is a major pest of alfalfa in northwestern China. However, the roles of different groups of natural enemies in combination with aphid-resistant cultivars in the suppression of the pea aphid have not been ...
Xiang Zhang   +8 more
doaj   +2 more sources

Starvation Stress Causes Body Color Change and Pigment Degradation in Acyrthosiphon pisum [PDF]

open access: yesFrontiers in Physiology, 2019
The pea aphid, Acyrthosiphon pisum (Harris), shows body color shifting from red to pale under starvation in laboratory conditions. These body color changes reflect aphid’s adaptation to environmental stress. To understand the color-shifting patterns, the
Xing-Xing Wang   +6 more
doaj   +2 more sources

Transcriptomic and Metatranscriptomic Analyses Provide New Insights into the Response of the Pea Aphid Acyrthosiphon pisum (Hemiptera: Aphididae) to Acetamiprid [PDF]

open access: yesInsects
Acetamiprid is a broad-spectrum neonicotinoid insecticide used in agriculture to control aphids. While recent studies have documented resistance to acetamiprid in several aphid species, the underlying mechanisms are still not fully understood.
Zhiyan Cai   +8 more
doaj   +2 more sources

The Effect of Photoperiod and Temperature on Reproduction in Acyrthosiphon pisum (Harris) and on the Forms produced

open access: yesBulletin of Entomological Research, 1955
The effect of photoperiod and temperature on the production of the various forms of Acyrthosiphon pisum (Harris) has been studied. In this study apterous virginoparous females were exposed throughout their lifetime to two photoperiods (8 hr./24 hr. and 16 hr./24 hr.) and six different temperatures. At each of the temperatures the apterae (parent Aphids)
Kenten, J.
openaire   +2 more sources

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