How wild asses became donkeys of the pharaohs

New Scientist (Andy Choghlan)

Thanks to Vincent Brown for pointing this out to me. New Scientist has a feature this week on the domestication of the donkey in Egypt. The article is a summary of research published in Proceedings of the National Academy of Sciences: Domestication of the donkey: Timing, processes, and indicators by Stine Rossel, Fiona Marshall, Joris Peters, Tom Pilgram, Matthew D. Adams, and David O'Connor. Unfortunately only subscribers to New Scientist have access to the full story, but the magazine is available from news stands, so you may be able to get hold of a print copy. Here's the extract shown on the New Scientist website:

The ancient Egyptian state was built on the backs of tamed wild asses. Ten skeletons excavated from burial sites of the first Egyptian kings are the best evidence yet that modern-day donkeys emerged through domestication of African wild asses. The 5000-year-old bones also provide the earliest indications that asses were used for transport.

The skeletons suggest that the smaller frames of today's donkeys hadn't yet evolved. Instead, the bones resemble those of modern-day Nubian and Somali wild asses, which are much larger than today's donkeys.

Extensive wear on the joints of the excavated skeletons shows that the animals lived their lives transporting heavy loads. Cargoes may have included stone for a nearby temple at the excavation site in Abydos, 500 kilometres south of Cairo, as well as wine, grain and precious stones.

"This is the very dawn of the Egyptian state, the engine of which was the donkey," says Fiona Marshall of Washington University in St Louis, Missouri, US, a member of the research team.

The only anatomical signs of the transition from ass to donkey are changes in the metatarsal bone of the lower leg, which made the leg more compact – presumably an adaptation to cope with carrying loads.

If the subject is of particular interest you can purchase a short term access to the article on the website of the Proceedings of the National Academy of Sciences.

An earlier informal report about archaeologist Fiona Marshall's investigations into the domestication of the donkey appeared in the Washington University of St Louis newsletter in May 2007.