Results 161 to 170 of about 1,190 (202)
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The fate of pea enation mosaic virus in its pea aphid vector, Acyrthosiphon pisum (Harris)
Virology, 1972Abstract The fate of pea enation mosaic virus (PEMV) in its primary vector the pea aphid, Acyrthosiphon pisum (Harris), was studied by ultrathin sectioning and conventional transmission electron microscopy. PEMV virions were highly concentrated in the lumen of the midgut and hindgut, and also invaded a variety of tissues in the vector. Virions were
K F, Harris, J E, Bath
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Oecologia, 1993
Many aphid species have shown remarkable adaptability by invading new habitats and agricultural crops, although they are parthenogenetic and might be expected to show limited genetic variation. To determine if the mode of reproduction limits the level of genetic variation in adaptively important traits, we assess variation in 15 life history traits of ...
Patricia A, MacKay +2 more
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Many aphid species have shown remarkable adaptability by invading new habitats and agricultural crops, although they are parthenogenetic and might be expected to show limited genetic variation. To determine if the mode of reproduction limits the level of genetic variation in adaptively important traits, we assess variation in 15 life history traits of ...
Patricia A, MacKay +2 more
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Crop & Pasture Science, 2018
The small-seeded legumes are important forage crops for grazing animals and contribute nitrogen to succeeding crops in crop rotation systems. However, the susceptibility of several of the forage legumes to the specialist pea aphid Acyrthosiphon pisum (Harris) has never been investigated. The present study on aphid probing behaviour using the Electrical
Bozena Kordan +5 more
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The small-seeded legumes are important forage crops for grazing animals and contribute nitrogen to succeeding crops in crop rotation systems. However, the susceptibility of several of the forage legumes to the specialist pea aphid Acyrthosiphon pisum (Harris) has never been investigated. The present study on aphid probing behaviour using the Electrical
Bozena Kordan +5 more
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Comparative Biochemistry and Physiology Part A: Physiology, 1985
Abstract 1. 1. Ultrastructural observations of the integument showed three layers: outer epicuticle, inner epicuticle and procuticle. 2. 2. Use of organic solvents for cuticular lipid removal modified the integrity of the integument. 3. 3.
P.T Brey +5 more
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Abstract 1. 1. Ultrastructural observations of the integument showed three layers: outer epicuticle, inner epicuticle and procuticle. 2. 2. Use of organic solvents for cuticular lipid removal modified the integrity of the integument. 3. 3.
P.T Brey +5 more
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Studies on the dispersal behaviour of apterous pea aphids acyrthosiphon pisum (Harris)
2010The dispersal behaviour of apterous pea aphids, Acyrthosipon pi sum (Harris) was studied in the laboratory and field. In the laboratory, aphids exhibited two types of behaviour while on the ground, after dropping from plants in response to predators.
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Biology of the Pea Aphid, Acyrthosiphon pisum (Harris) (Homoptera: Aphididae) on Cool-Season Legumes
International Journal of Tropical Insect Science, 2000The biology of the pea aphid, Acyrthosiphon pisum (Harris) (Homoptera: Aphididae), on four legumes (faba bean, field pea, lentil and grass pea) was studied in a greenhouse during the 1999/2000 seasons. There was no significant difference in length of nymphal period and number of moults (instars) among the crop species tested.
Melaku Wale +2 more
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Biotypes of Pea Aphid Acyrthosiphon pisum (Harris) in Relation to Alfalfa Clones
The Canadian Entomologist, 1965AbstractTen alfalfa clones, Medicago sativa L., were tested at 60°, 70° and 80° F. in Kansas and Quebec for resistance to pea aphid biotypes, Acyrthosiphon pisum (Harris), originating in the respective areas.The resistance of the clones at the three temperatures varied differentially at the two locations.
J. J. Cartier +3 more
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Aspects of Mineral Nutrition of the Pea Aphid, Acyrthosiphon pisum (Harris)
The Journal of Nutrition, 1967A, Retnakaran, S D, Beck
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Sampling Acyrthosiphon pisum Harris in pea fields
1983Baumgärtner, J. +2 more
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