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DNA find reveals new insights into the history of cattle in Europe

Date:
July 29, 2014
Source:
Universität Basel
Summary:
Scientists have made a surprising find in a Neolithic settlement at the boarders of Lake Biel in Switzerland: The DNA of a cattle bone shows genetic traces of the European aurochs and thus adds a further facet to the history of cattle domestication.

Metacarpus of a small and compact adult bovid found in Twann after sampling for genetic analysis.
Credit: Illustration: University of Basel, Integrative Prehistory and Archaeological Science

A research team from the University of Basel made a surprising find in a Neolithic settlement at the boarders of Lake Biel in Switzerland: The DNA of a cattle bone shows genetic traces of the European aurochs and thus adds a further facet to the history of cattle domestication. The journal Scientific Reports has published the results.

The modern cattle is the domesticated descendant of the aurochs, a wild species that became extinct in the 17th century. The aurochs' domestication already began roughly 10,000 years ago in the Near East. It is their DNA that reveals their ancestry: Aurochs of the Near East carry a maternally inherited genetic signature (mtDNA) called T haplogroup. Modern cattle still carry this signature and thus show that they derive from these early domesticated cattle of the Near East. This suggests that with the spreading of early farmers from the Near East to Europa, the domesticated cattle was imported to Europe alongside.

Unlike the aurochs of the Near East, the local wild aurochs of Europe belonged to the P haplogroup. So far, scientists believed that the female European aurochs did not genetically influence the Near Eastern cattle imported during the Neolithic Age (5,500 - 2,200 BC).

Small sturdy cows as draft animals

Scientists from the University of Basel by accident found a very small metacarpal bone from a Neolithic cattle among other animal bones found in the lake settlement Twann in Switzerland and analyzed its mtDNA. The analysis showed that the bovine bone carried the European aurochs' genetic signature of the P haplogroup. The bone thus represents the first indisputable evidence that female European aurochs also crossbred with domestic cattle from the Near East.

The bone, dated to around 3,100 BC, is evidence for the earlier crossbreeding between a wild female European aurochs with a domestic bull. "If these were coincidental single events or rather cases of intentional crossbreeding cannot be clearly answered on the basis of our results," explains Prof. Jörg Schibler, head of the research groups for Integrative Prehistoric and Archaeological Science (IPAS) from the Department Environmental Science at the University of Basel.

The animal, to which the bone belonged, was exceptionally small with a withers height of only 112 centimeters. "This raises a number of questions for us: How difficult was copulation or birth in this case? And how many generations did it take to develop such small animals?," explains the archaeogenetics specialist Angela Schlumbaum in regards to the significance of the discovery.

The scientists assume that the early farmers of the Horgen culture (3,400 - 2,750 BC), to which the bone dates, could have been trying to create a new smaller and sturdier type of cattle especially suitable as draft animal by intentional crossbreeding with wild aurochs. This assumption would be in accordance with archaeological finds of wooden wheels, wagons and a yoke from the Horgen culture.


Story Source:

The above story is based on materials provided by Universität Basel. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jörg Schibler, Julia Elsner, Angela Schlumbaum. Incorporation of aurochs into a cattle herd in Neolithic Europe: single event or breeding? Scientific Reports, 2014; 4 DOI: 10.1038/srep05798

Cite This Page:

Universität Basel. "DNA find reveals new insights into the history of cattle in Europe." ScienceDaily. ScienceDaily, 29 July 2014. <www.sciencedaily.com/releases/2014/07/140729073638.htm>.
Universität Basel. (2014, July 29). DNA find reveals new insights into the history of cattle in Europe. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2014/07/140729073638.htm
Universität Basel. "DNA find reveals new insights into the history of cattle in Europe." ScienceDaily. www.sciencedaily.com/releases/2014/07/140729073638.htm (accessed October 21, 2014).

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