aphid


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Fig. 41 Aphid . Winged female.

aphid

any member of the family Aphididae, order Hemiptera, commonly called green fly. Aphids feed on plant juices by using piercing and sucking mouthparts and are of considerable economic importance because they can act as vectors of plant viruses. See Fig. 41 .

aphid

an insect of the order Hemiptera. They parasitize many plants during the warm seasons. Of interest in animal health are the black aphids, Aphis craccivora, which can exist in very large numbers on burr trefoil, Medicago polymorpha, and may stimulate the production of phytoallexins in the plant which then photosensitize animals grazing the infested pasture.
References in periodicals archive ?
Ants that farm the honeydew secreted by some types of scale, mealybugs, and aphids will actually battle some beneficial insects to protect the pests.
Analysis of the protein profiles of the original strains and those isolated from dead aphids (10% SDS-PAGE).
The toxicity of oil extracts of five Algerian plants known to have medicinal activity was investigated against the peach-potato aphid, M.
Aphid resistance in the Ontario and Maine populations seems to be controlled by multiple genes, while resistance in the Michigan population is governed by one dominant gene.
The percentage aphid population decreased with increase in temperature (Fig.
I knew the ants depended on the aphids and vice versa, so I hatched my plan.
If compared with Cinara atlantica, in 2 weeks, the aphid is able to increase 17 times its population (Penteado 2007), indicating the efficiency of H.
Collect aphid populations in the southern region in a targeted manner and test for resistance to key insecticide groups to determine effective options for ongoing aphid control in both canola and pulses.
A spokesman of the Punjab Agriculture department said on Monday that chances of wheat aphid attack in March increases and suggested the growers to spray cold water where wheat aphid attack is witnessed instead of using poisons.
Russian wheat aphid resistant accessions typically are used in traditional breeding strategies to transfer the resistance gene from the donor to an adapted cultivar.