Range and Frequency of Africanized Honey Bees in California

 PLOS/ONE  Yoshiaki  Kono, Joshua R. Kohn  September 11, 2015

Africanized honey bees entered California in 1994 but few accounts of their northward expansion or their frequency relative to European honey bees have been published. We used mitochondrial markers and morphometric analyses to determine the prevalence of Africanized honeybees in San Diego County and their current northward progress in California west of the Sierra Nevada crest. The northernmost African...

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(Note from E.L. Nino Bee Lab: "Fresh off the presses! I'm always asked how far did the Africanized honey bees make it in California so here is the answer.")