WebIn laboratory studies, suspensions of killed and live ice-nucleating microorganisms were used to decrease the supercooling capacity of the winter form of pear psylla, Cacopsylla pyricola(Foerster) (Hemiptera: Psyllidae). Dry, untreated adults supercooled extensively before they froze at −22.7 °C. Cacopsylla pyricola, commonly known as the pear sucker, is a true bug in the family Psyllidae and is a pest of pear trees (Pyrus). It originated in Europe, was introduced to the United States in the early nineteenth century and spread across the country in the next century. See more The eggs are tiny, stalked, oval, and cream to yellow, darkening before they hatch. The first instar nymphs are yellowish or pinkish and flattened, but later instars are greenish to dark brown, with distinctive red eyes and … See more Cacopsylla pyricola is native to Europe but was introduced into the eastern United States with nursery stock in the early 1800s; it had … See more Adult C. pyricola overwinter on the bark or twigs of a pear tree, or on other trees and shrubs near pear orchards. In the spring, the female lays eggs on twigs and expanding shoots of host trees, attaching them by means of short stalks on their ventral surfaces. … See more

Population trends and temperature-dependent development of …

WebThe North American psyllid, C. pyricola, is not native to North America, but was introduced into the eastern United States in the early 1800s on infested pear seedlings imported … WebNov 29, 2024 · Of the two identified species (C. pyri L. and C. pyricola Forster), C. pyri dominated the psylla population with a percentage of 77.8-80.1%. Adults of both species emerge from hibernation in the first part of March and produce three generations per year. First-generation adults emerge in the first decade of June, the second generation in the ... the wandering earth plot summary

Cacopsylla pyricola (psyllid, pear) CABI Compendium

WebCacopsylla pyricola (Förster) is one of the most important pests of pear in North America, where several native predators have been considered for integrated pest management … WebApr 13, 2016 · C. pyricola Scientific Name Cacopsylla pyricola (Forster) Common Names pear psylla Compiled by Whitney Cranshaw, Colorado State University Cacopsylla pyricola Foerster Homoptera: Psyllidae … WebFeb 6, 2024 · Pear decline, induced by the phytoplasma 'Candidatus Phytoplasma pyri', transmitted by pear psyllids, is one of the most devastating diseases on Pyrus communis … the wandering earth project