Pesticide contamination of milkweeds across the agricultural, urban, and open spaces of low elevation Northern California

• Published in: bioRxiv
• Main Authors: Halsch, Christopher A, Code, Aimee, Hoyle, Sarah M, dyce, James, Baert, Nicolas, ister, Matthew L
• Format: Paper
• Language: English
• Published: Cold Spring Harbor Cold Spring Harbor Laboratory Press 10.03.2020
• Subjects: Asclepias; Butterflies & moths; Contamination; Danaus plexippus; Fungicides; Herbicides; Insecticides; Land use; Pesticides; Northern California; United States > US

Monarch butterflies (Danaus plexippus) are in decline in the western United States and are encountering a range of anthropogenic stressors. Pesticides are among the factors that likely contribute to this decline, though the concentrations of these chemicals in non-crop plants is not well documented,...