Facebook
X (Twitter)
Reddit
Pinterest
Tumblr
Delicious
LinkedIn
StumbleUpon
Effect of environment on reproduction in dusky-veined walnut aphids
Author
William H. OlsonAuthor Affiliations
W. H. Olson is a Farm Advisor in Butte County. Assistance was provided by Dr. William C. Batiste, formerly with the Division of Entomology and California, Berkeley.Publication Information
Hilgardia 29(5):10-11. DOI:10.3733/ca.v029n05p10. May 1975.
PDF of full article, Cite this article
Abstract
The dusky-veined walnut aphid, Panaphis juglandis (Goeze), appears in three distinct forms: alate viviparous parthenogenetic females, apterous oviparous females, and alate males. Commonly, only the alate viviparous parthenogenetic female form of this aphid can be found during the spring and summer months. The apterous oviparae and males appear during the fall. This suggests that temperature, day length, or host plant (English walnut) condition influences form.
Olson W. 1975. Effect of environment on reproduction in dusky-veined walnut aphids. Hilgardia 29(5):10-11. DOI:10.3733/ca.v029n05p10
Also in this issue:
The giannini foundation for agricultural economicsEffects of sulfur on tufts strawberry
Data bank of pesticides in the San Joaquin Valley
Mycorrhizal fungi and peach nursery nutrition
Integrated fly control on poultry ranches
Pesticides for controlling sunflower moth larvae
California wine grape supply–: Implications for 1975 and beyond
Research briefs: Short reports on current research in agricultural sciences
An ecological study of the Indian-meal moth Plodia interpunctella (Hübner) with emphasis on diapause