Evaluation of summer exploitation of Otaria flavescens in coastal archaeological sites of Patagonia

All Titles

  • Evaluation of summer exploitation of Otaria flavescens in coastal archaeological sites of Patagonia

Dublin Core

Title

Evaluation of summer exploitation of Otaria flavescens in coastal archaeological sites of Patagonia

Subject

S5-2, S6-3, General session, poster

Description

Abstract:

South American sea lion, Otaria flavescens, is one of the two species of Otariids commonly represented in the archaeological record of South American coastal sites. This taxon is characterized by breeding colonies during a reproductive season placed in selected littoral settings during summer. Thus, the finding of pups remains of O. flavescens in the Patagonian archaeological record has been used as seasonally marker frequently. However, the presence of pups remains do not assure the season of animal death without an accuracy determination of their age, being necessary to differentiate newborn individuals from the other age classes for inferring summer human occupations in the past.

For this reason we carried out an osteometric study of the postcranial skeleton of modern young of the year sea lion puppies with sex and age known, the last estimated by dental replacement patterns (Crespo 1988). We measure 11 skeletal elements (long bones and innominate) in 30 individuals from the northern Patagonian coast, Argentina.

The obtained values significatively correlates with age but not with the sex of pups, allowing us to use postcranial bone sizes as an accurate marker of sea lion pups ages and then a valuable tool for evaluate site seasonality.

Authors:

BORELLA Florencia1, L’HEUREUX Gabriela Lorena2 and GRANDI Florencia3

Affiliations

1 CONICET - FACSO (UNCPBA), Av. del Valle 5737, C. Munoz 1977, B7400JWI, Olavarria, ARGENTINA, fborella@soc.unicen.edu.ar
2 CONICET-IMHICIHU, Departamento de Investigaciones Prehistóricas y Arqueológicas (DIPA). Saavedra 15, piso 5, (ACA 1083) Ciudad de Buenos Aires, Argentina. lorenalheureux@yahoo.com.ar
3 CONICET – Centro Nacional Patagónico, Puerto Madryn, Argentina, grandi@cenpat.edu.ar

Creator

Borella, Florencia
L’Heureux, Gabriela Lorena
Grandi, Florencia

Date

August 2010

Contribution Form

Online Submission

No

Document Item Type Metadata

Citation

Borella, Florencia, L’Heureux, Gabriela Lorena and Grandi, Florencia. "Evaluation of summer exploitation of Otaria flavescens in coastal archaeological sites of Patagonia ," in BoneCommons, Item #989, http://alexandriaarchive.org/bonecommons/items/show/989 (accessed August 7, 2020).

License

Creative Commons License

File: Otaria_Patagonia_Borella_etal_ICAZ2010_Poster.pdf