Isotopic analysis as proxy to investigate the presence of domestic camelids (Lama glama) in central Argentina during the late period (∼1220–330 BP)

Abstract

Camelid exploitation has been important throughout the Holocene in central Argentina, emphasizing Lama guanicoe hunting. Despite attempts (i.e. osteometry, DNA) no conclusive results have been obtained on the presence or management of Lama glama (domestic camelids) in the region. This study represents the first isotopic analysis conducted on archaeofaunal remains of Camelidae from the Sierras del Norte (central Argentina), dating to the Late Period (∼1220–330 cal BP), to discuss the possible presence of Lama glama in the region. The δ13C and δ15N obtained in bone collagen showed that camelids from Quebrada Norte 7 (QN7) have high values of ð13C (values between −14.98 ‰ and −12.54 ‰) concerning other assemblages dated from the Early and Late Holocene, with isotopic values ranging from −21.6 ‰ and −16.5 ‰. These results are discussed and compared against published data from another site in the region. In this way, the camelid samples with high ð13C from QN 7 could contribute to the discussion and reflection on the introduction of Lama glama within a flexible subsistence and mobility pattern.