Abstract
The species is believed to be anholocyclic, because sexuals, eggs and fundatrices were absent. In the spring following winter survival on ponderosa pine Pinus ponderosa in the foothills, populations migrated up the west slope of the Sierra Nevada. The local population in Blodgett Forest, Eldorado County, began in May with the number of aphids and colonies expanding throughout June and collapsing by the end of July. There was a gradual increase in older instars until population collapse. First generation 4th instars and apterae moved throughout the tree and began new colonies. Predators, primary and secondary parasites, and ant associates were noted.- from Authors
Original language | English (US) |
---|---|
Journal | Hilgardia |
Volume | 50 |
Issue number | 3 |
State | Published - 1982 |
Externally published | Yes |
ASJC Scopus subject areas
- General Environmental Science
- General Earth and Planetary Sciences