Results 351 to 360 of about 107,272 (365)
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Biological Reviews, 1999
ABSTRACTWithin the Aphidoidea, most species of Aphididae, as long as they are in small numbers and not carrying plant viruses, do little perceptible damage to their food plants. In species that cause toxicoses, it is usually assumed that some component of the saliva must be responsible.
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ABSTRACTWithin the Aphidoidea, most species of Aphididae, as long as they are in small numbers and not carrying plant viruses, do little perceptible damage to their food plants. In species that cause toxicoses, it is usually assumed that some component of the saliva must be responsible.
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Outlook on Agriculture, 1961 Aphids of bewildering diversity cause severe losses in a wide range of crops, partly through mechanical damage but mainly through virus transmission. Fortunately, many aphicides presenting a choice of suitable properties are now available and can be applied to the aerial parts of the crop, to the seed before planting or directly to the soil.
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An improved aphid electroantennogram
Journal of Insect Physiology, 1998Excised antennae have been used to record aphid electroantennograms (EAGs) but these preparations have small, rapidly declining responses and a short usable life. An improved EAG technique is described and evaluated using alate virginoparae of the black bean aphid, Aphis fabae, and a series of plant volatiles.
Kye Chung Park, Jim Hardie
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2009
Publisher Summary This chapter discusses insect aphids and their agricultural importance. Aphid damage is among the most serious of agricultural and horticultural problems. Aphids, as the superfamily Aphidoidea, belong to the Hemipteran Sternorrhyncha with Aleyrodoidea, Psylloidea, and Coccoidea.
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Publisher Summary This chapter discusses insect aphids and their agricultural importance. Aphid damage is among the most serious of agricultural and horticultural problems. Aphids, as the superfamily Aphidoidea, belong to the Hemipteran Sternorrhyncha with Aleyrodoidea, Psylloidea, and Coccoidea.
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Insect Systematics & Evolution, 1970
AbstractThe experiments described have given the following conclusions: (I) A chemical signal (pheromone) emitted by the oviparous female has an attractive effect upon the males. This signal is not emitted by the virginogeniae. (2) The signal is emitted by organs situated on the hind tibiae of the oviparous female and perceived by organs on the male ...
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AbstractThe experiments described have given the following conclusions: (I) A chemical signal (pheromone) emitted by the oviparous female has an attractive effect upon the males. This signal is not emitted by the virginogeniae. (2) The signal is emitted by organs situated on the hind tibiae of the oviparous female and perceived by organs on the male ...
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Genomics of Phenotypic Plasticity in Aphids
2016This chapter aims at explaining how the understanding of a complex adaptive trait (phenotypic plasticity) of insect pests (aphids) can gain from genomics approaches. Aphids adapt their capacity of dispersal to escape natural enemies or poor plant quality, as well as they adapt capacity to produce eggs or viviparous larvae upon the seasons.
Jenn A. Brisson +5 more
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Journal of Allergy, 1950
Abstract 1.1. The life cycle of the aphid is explained. The aphid is one of the most prolific insects known. 2.2. An explanation of the qualifications of the aphid as an air-borne inhalant allergen is offered. 3.3. A number of patients with seasonal allergic manifestations have symptoms which are not explained by the known seasonal allergens. 4.4.
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Abstract 1.1. The life cycle of the aphid is explained. The aphid is one of the most prolific insects known. 2.2. An explanation of the qualifications of the aphid as an air-borne inhalant allergen is offered. 3.3. A number of patients with seasonal allergic manifestations have symptoms which are not explained by the known seasonal allergens. 4.4.
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2016
This chapter summarizes IPM for greenhouse aphids on both vegetable and ornamental crops. Focus is on monitoring, sanitation, biological controls, biorational pesticides, and insect growth regulators. Supplemental tables include information on the newest biopesticides and biological control organisms.
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This chapter summarizes IPM for greenhouse aphids on both vegetable and ornamental crops. Focus is on monitoring, sanitation, biological controls, biorational pesticides, and insect growth regulators. Supplemental tables include information on the newest biopesticides and biological control organisms.
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