Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

Aphid resistant to parathion: Strain of walnut aphid in Sun Jose area found to have developed definite resistance to parathion

Authors

A. E. Michelbacher
C. S. Davis

Authors Affiliations

A. E. Michelbacher is Associate Professor of Entomology, University of California, Berkeley; C. S. Davis is Research Assistant in Entomology,. University of California, Berkeley.

Publication Information

Hilgardia 8(5):8-8. DOI:10.3733/ca.v008n05p8. May 1954.

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Abstract

A strain of walnut aphid–Chroma-phis juglandicola (Kltb.)–encountered in the San Jose area during insect investigations in 1953 exhibited definite resistance to parathion.

Michelbacher A, Davis C. 1954. Aphid resistant to parathion: Strain of walnut aphid in Sun Jose area found to have developed definite resistance to parathion. Hilgardia 8(5):8-8. DOI:10.3733/ca.v008n05p8
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