Halictid bees' social behavior studied

Mar 13, 2006

Cornell University scientists say the social behavior of many species of sweat bees evolved simultaneously during a period of global warming.

The study, the first to link social evolution to climate change, suggests the social evolution occurred much more recently than scientists thought -- 20 million to 22 million years ago -- compared with the social evolution of other insects more than 65 million years ago.

"We believe that climatic change was a critical factor in the evolution of social behavior in these bees," said Bryan Danforth, associate professor of entomology

Halictid, or sweat, bees are eusocial, he explained, which is a type of social behavior in which the animals have permanently sterile worker castes, among other traits. Eusocial animals include honey, bumble, carpenter and sweat bees, ants, termites, many wasps as well as certain kinds of shrimp and the naked mole rat.

Halictid bees are nicknamed sweat bees because they are attracted to the salts in human perspiration.

Danforth's study will appear in a forthcoming issue of the Proceedings of the Royal Society of London, Series B, Biological Sciences.

Copyright 2006 by United Press International

Explore further: A two generation lens: Current state policies fail to support families with young children

add to favorites email to friend print save as pdf

Related Stories

Bees from the inside out

Jul 08, 2014

It is 1,825 miles from New Haven, Conn., to Austin, Tex., which typically means 30 hours of driving and three nights in motels, not an easy trip for anyone. But for researchers moving from Yale University ...

Honeybees show tipping points

May 16, 2014

Parasites, lack of food, cold snaps, pesticides, and poor management all can stress honeybee colonies, making it difficult to pin their collapse on a single source. However, in controlled field tests, honeybee ...

Recommended for you

New hadrosaur noses into spotlight

Sep 19, 2014

Call it the Jimmy Durante of dinosaurs – a newly discovered hadrosaur with a truly distinctive nasal profile. The new dinosaur, named Rhinorex condrupus by paleontologists from North Carolina State Univer ...

Scholar tracks the changing world of gay sexuality

Sep 19, 2014

With same-sex marriage now legalized in 19 states and laws making it impossible to ban homosexuals from serving in the military, gay, lesbian and bisexual people are now enjoying more freedoms and rights than ever before.

User comments : 0