insects

Social Bee-stortion: Exploring Pesticide’s Effects on Pollinators

November 08, 2018
In a study appearing in Science, researchers show that the pesticide imidacloprid, which has been sold in the U.S. since 1994, disrupts bumblebee (Bombus impatiens) nest behavior, causing reduced growth in exposed colonies.

Drought Has Unexpected Consequences for Northern California Butterfly Populations

June 13, 2018
Utilizing nearly 45 years of butterfly population field data, a new study published in Climate Change Responses reveals how recent record-setting temperatures and drought conditions affected butterfly populations at various elevations in Northern California. And the results are surprising.

How Population Genetics Can Help Breed a Hardier Honey Bee

February 06, 2018
In a study appearing in Genome Biology and Evolution, Assistant Professor Santiago Ramirez, Department of Evolution and Ecology, and postdoctoral researcher Julie Cridland provide a genetic snapshot of the state’s honey bee populations, defining how the species has changed over the past 105 years.

A Butterfly for a Beer! Or Suds for a Bug!

December 21, 2017
The annual “Butterfly for a Beer” contest, sponsored by Art Shapiro, distinguished professor of evolution and ecology at the University of California, Davis, gets underway on Monday, Jan. 1. The person who collects the first cabbage white butterfly (Pieris rapae) of the year in one of three counties—Sacramento, Yolo and Solano—will receive a pitcher of beer or its equivalent.