globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1903275116
论文题名:
Widespread male sex bias in mammal fossil and museum collections
作者: Gower G.; Fenderson L.E.; Salis A.T.; Helgen K.M.; van Loenen A.L.; Heiniger H.; Hofman-Kaminska E.; Kowalczyk R.; Mitchell K.J.; Llamas B.; Cooper A.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2019
卷: 116, 期:38
起始页码: 19019
结束页码: 19024
语种: 英语
英文关键词: Ancient DNA ; Bison ; Brown bears ; Sex bias ; Sex ratio
Scopus关键词: DNA ; animal tissue ; Article ; Bison ; brown bear ; cave ; cohort analysis ; DNA sequence ; Europe ; female ; fossil animal ; herd ; high throughput sequencing ; Holarctic ; information center ; male ; mammoth ; nonhuman ; North America ; prediction ; preservation ; priority journal ; Russian Federation ; sediment ; sex difference ; sex ratio ; sexual behavior ; steppe
英文摘要: A recent study of mammoth subfossil remains has demonstrated the potential of using relatively low-coverage high-throughput DNA sequencing to genetically sex specimens, revealing a strong male-biased sex ratio [P. Pečnerová et al., Curr. Biol. 27, 3505–3510.e3 (2017)]. Similar patterns were predicted for steppe bison, based on their analogous female herd-based structure. We genetically sexed subfossil remains of 186 Holarctic bison (Bison spp.), and also 91 brown bears (Ursus arctos), which are not female herd-based, and found that ∼75% of both groups were male, very close to the ratio observed in mammoths (72%). This large deviation from a 1:1 ratio was unexpected, but we found no evidence for sex differences with respect to DNA preservation, sample age, material type, or overall spatial distribution. We further examined ratios of male and female specimens from 4 large museum mammal collections and found a strong male bias, observable in almost all mammalian orders. We suggest that, in mammals at least, 1) wider male geographic ranges can lead to considerably increased chances of detection in fossil studies, and 2) sexual dimorphic behavior or appearance can facilitate a considerable sex bias in fossil and modern collections, on a previously unacknowledged scale. This finding has major implications for a wide range of studies of fossil and museum material. © 2019 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163536
Appears in Collections:气候变化与战略

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作者单位: Gower, G., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia, Lundbeck GeoGenetics Centre, GLOBE Institute, University of Copenhagen, Copenhagen, 1350, Denmark; Fenderson, L.E., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia, Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH 03824, United States; Salis, A.T., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia; Helgen, K.M., School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia; van Loenen, A.L., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia; Heiniger, H., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia; Hofman-Kaminska, E., Mammal Research Institute, Polish Academy of Sciences, Białowieża, 17-230, Poland; Kowalczyk, R., Mammal Research Institute, Polish Academy of Sciences, Białowieża, 17-230, Poland; Mitchell, K.J., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia; Llamas, B., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia; Cooper, A., Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5005, Australia

Recommended Citation:
Gower G.,Fenderson L.E.,Salis A.T.,et al. Widespread male sex bias in mammal fossil and museum collections[J]. Proceedings of the National Academy of Sciences of the United States of America,2019-01-01,116(38)
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