Sentences with phrase «aphid feeding»

During her PhD, Karen Kloth studied aphid feeding behavior on different varieties of the model plant Arabidopsis thaliana, collected from 350 different locations on the northern hemisphere.

Besides the stress created by aphids feeding on plant sap, their honeydew gets on the fruit and leaves.

«The aphids feed on the juices, which can cause deformities and general weakness of the plant,» Johnson said.

Food webs are made up of many dynamic feeding relationships; for example herbivore aphids feed on Ground Elder and are themselves eaten by hoverfly larvae.

Not exact matches

In some instances, it only takes 5 to 10 seconds of feeding by an aphid to infect a pepper plant.

The density of aphids was reduced due to higher mortality caused by increased numbers of predators feeding on aphids41.

Heidel - Baker reared a new related species of parasitic wasp, now called A. bicolor, on a different host Uroleucon aphid that feeds on asters.

As these eggs hatch, the larvae feed internally on the aphids, he explained.

On resistant plants, the aphids were feeding less from the sugar - rich sap than on susceptible plants.

Together with other Dutch researchers she built a video - tracking platform to measure how often aphids penetrated the plants and were feeding.

Amanda Williams and Samuel Flaxman of the University of Colorado in Boulder treated broad bean plants with a non-toxic chemical to toughen up plant tissue, making them harder for pea aphids (Acyrthosiphon pisum) to feed on.

Feed on the pests of vegetable crops such as aphids and whitefly

On the other hand, these two closely related species of aphid do not necessarily feed on the same plants.

One such insect, the sap - sucking aphid (a common pest in gardens), has an effective escape plan, though: the bugs detect an approaching herbivore's breath and simply drop off the plant before it's eaten.Researchers at the University of Haifa at Oranim, Israel first noticed this phenomenon when they allowed a goat to feed on aphid - infested alfalfa plants — 65 percent of the plant pests simultaneously dropped to the ground just before the vegetation was devoured.The team suspected that several cues might have motivated the mass dropping, including the sudden shadow cast by the goat, plant - shaking triggered by the munching marauder and / or the herbivore's exhalations.

Going up the food chain, the scientists observed that there was little chance that the most closely related wasps feed on the same species of aphid.

These observations, carried out at an extraordinary level of detail, made it possible to establish the interactions between one hundred or so species situated on four trophic levels: plants (23 species), aphids that feed on these plants (25 species), wasps that lay their eggs in the bodies of the aphids (22 species), and other wasps that lay their eggs in the larvae of the preceding wasps inside aphids (26 species).

It especially poses a threat to local ladybird species and other insects that feed on aphids.

These flies feed on aphids as larvae, and aphids are found on tender new growth.

Most Coccinellids are beneficial to gardens, as they feed on aphids, scale insects, mealybugs, and mites throughout the winter.