Environment and excavation: Pre-lab impacts on ancient DNA analyses


en Comptes Rendus Palevol 7 (2-3) - Pages 91-98

Published on 30 April 2008

This article is a part of the thematic issue Palaeogenetics in palaeontology, archaeology and palaeoanthropology: Contributions and limits

Ancient DNA (aDNA) analyses enjoy an increasing role in palaeontological, archaeological and archaeozoological research. The limiting factor for aDNA studies is the degree of DNA preservation. Our study on 291 prehistoric cattle remains from Europe, the Near East and North Africa revealed that DNA preservation is mainly influenced by geographic and climatic conditions. Especially in hot climates, the preservation of sample material is generally low. We observed that these specimens are prone to further degradation and contamination during and after excavation. We give a description of the main caveats and a short guideline for adequate sample handling in order to facilitate the cooperation between archaeologists and geneticists and to improve the outcome of future research.


Ancient DNA, Contamination, DNA preservation, Sampling strategy, Molecular genetics, Excavation techniques

Download full article in PDF format Order a reprint