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Testosterone in ancient hair from an extinct species
Stockholm University, Faculty of Science, Department of Zoology. Swedish Museum of Natural History, Sweden.
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Number of Authors: 82018 (English)In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 61, no 6, p. 797-802Article in journal (Refereed) Published
Abstract [en]

Testosterone is a key regulator in vertebrate development, physiology and behaviour. Whereas technology allows extraction of a wealth of genetic information from extant as well as extinct species, complementary information on steroid hormone levels may add a social, sexual and environmental context. Hair shafts have been previously used to sequence DNA from >50000 C-14 years old Siberian woolly mammoths (Mammuthus primigenius). Hair-testing has also been used to measure endogenous steroids in multiple extant species. Here we use small quantities of woolly mammoth hair samples to measure testosterone, and a genomics-based approach to determine sex, in permafrost-preserved mammoths dated to c. 10000-60000 C-14 years. Our validated method opens up exciting opportunities to measure multiple steroids in keratinized tissues from extinct populations of mammals. This may be specifically applied to investigating life histories, including the extinct Quaternary megafauna populations whose remains are preserved in the permafrost throughout the northern hemisphere.

Place, publisher, year, edition, pages
2018. Vol. 61, no 6, p. 797-802
Keywords [en]
testosterone, endogenous steroids, hair-testing, woolly mammoth
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-162109DOI: 10.1111/pala.12391ISI: 000447775200001OAI: oai:DiVA.org:su-162109DiVA, id: diva2:1263347
Available from: 2018-11-15 Created: 2018-11-15 Last updated: 2018-11-15Bibliographically approved

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