aphid


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Aphidclick for a larger image
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 ?
Non host alternating life cycle (monoecious or autoecious) in which the aphid feed and reproduce on only one host plant during the whole year 2.
Aphid species richness that is 2 to more than 2 host plant species infested per aphid species (Table.
Lamiaceae) seed extract, had significant adverse effects on the honeydew excretion frequency and honeydew production of cotton aphid.
In Rahimyar Khan, three hot spots of Aphid, and two hot spots of armyworm while in Rajanpur one hot spot of Aphid were observed.
In Rahimyar Khan, two hot spots of white fly, Aphid (6), and armyworm (5) were reported.
The aphid means were subjected to exploratory analyses to assess the assumptions of the normality of residuals, homogeneity of variance of the treatments, and additivity of the model to allow for parametric tests.
The present study was designed to determine integrated effect of synthetic insecticides and nitrogen fertilizer on aphid population in canola crop.
All allelopathic water extracts investigated in our studies had a significant effect on aphid mortality (Table 2).
Aphid abundance was negatively correlated with parasitoidism rates in both distances (25 m and 525 m).
Biology of Transverse beetle, Coccinella transvarsalis Fabricius reared on Akk aphid, Aphis nerii under laboratory conditions.
50) resulted in a mortality above 50 % of the aphid after 48 hr of treatment but none of them was as toxic as Actara insecticide did (90.