Shock Study: Bees like Warm Climates

Another global warming, fear-mongering, dud prediction, stung by empirical evidence!

Watts Up With That?

honey-bee

Guest essay by Eric Worrall

A study published in the Journal of Hymenoptera finds that Australian bee populations expanded with the end of the last ice age, then plateaued around 6000 years ago.

The small carpenter bees, genus Ceratina, are highly diverse, globally distributed, and comprise the sole genus in the tribe Ceratinini. Despite the diversity of the subgenus Neoceratina in the Oriental and Indo-Malayan region, Ceratina (Neoceratina) australensis is the only ceratinine species in Australia. We examine the biogeography and demography of C. australensis using haplotype variation at 677 bp of the barcoding region of COI for specimens sampled from four populations within Australia, across Queensland, New South Wales, Victoria and South Australia. There is geographic population structure in haplotypes, suggesting an origin in the northeastern populations, spreading to southern Australia. Bayesian Skyline Plot analyses indicate that population size began to increase approximately 18,000 years ago, roughly corresponding to…

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