Characterizing seasonal fishing patterns and growth dynamics during the Middle and Late Holocene in the Strait of Magellan (Chilean Patagonia): Sclerochronological analysis of tadpole codling (Salilota australis) vertebrae

Type Article
Date 2022-01
Language English
Author(s) Torres Jimena1, Mahe KeligORCID2, Dufour Jean-Louis2, Bearez Philippe3, San Roman M1
Affiliation(s) 1 : Instituto de la Patagonia, Universidad de Magallanes, Chile
2 : IFREMER, Fisheries laboratory, Sclerochronology Centre, France.
3 : MNHN, CNRS UMR 7209, France.
Source Journal Of Island & Coastal Archaeology (1556-4894) (Taylor & Francis Group), 2022-01 , Vol. 17 , N. 1 , P. 1-20
DOI 10.1080/15564894.2020.1755393
WOS© Times Cited 5
Keyword(s) Patagonia, prehistoric fishing, sclerochronology, seasonality, ichthyoarchaeology, fish growth
Abstract

We describe sclerochronological analyses of tadpole codling (Salilota australis) vertebrae as a proxy for the seasonal timing of fishing activities at one Middle Holocene (6500 BP) and three Late–Middle Holocene (3500–2500 years BP) archaeological sites located in Seno Otway and in the central zone of the Strait of Magellan, Chile. These data were also used to provide an approximation of the population characteristics of the species in the past, by estimating the relationship between size and age of the archaeological fish and comparing their growth rate to those of modern specimens, captured monthly over one year. The results showed that the size at age was significantly larger in archaeological samples than in the modern reference collection. Our results indicate that fishing activities took place throughout the year at the Late Holocene sites, with a special emphasis on the cold season, while the Middle Holocene site showed a tendency to catch tadpole codling during the warm season.

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Torres Jimena, Mahe Kelig, Dufour Jean-Louis, Bearez Philippe, San Roman M (2022). Characterizing seasonal fishing patterns and growth dynamics during the Middle and Late Holocene in the Strait of Magellan (Chilean Patagonia): Sclerochronological analysis of tadpole codling (Salilota australis) vertebrae. Journal Of Island & Coastal Archaeology, 17(1), 1-20. Publisher's official version : https://doi.org/10.1080/15564894.2020.1755393 , Open Access version : https://archimer.ifremer.fr/doc/00631/74345/