气候变化领域集成服务门户(CCPortal): Widespread male sex bias in mammal fossil and museum collections

CCPortal

DOI	10.1073/pnas.1903275116
	Widespread male sex bias in mammal fossil and museum collections
	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.
发表日期	2019
ISSN	0027-8424
起始页码	19019
结束页码	19024
卷号	116 期号:38
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.
英文关键词	Ancient DNA; Bison; Brown bears; Sex bias; Sex ratio
语种	英语
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
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160351
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, Białowie...
推荐引用方式 GB/T 7714	Gower G.,Fenderson L.E.,Salis A.T.,et al. Widespread male sex bias in mammal fossil and museum collections[J],2019,116(38).
APA	Gower G..,Fenderson L.E..,Salis A.T..,Helgen K.M..,van Loenen A.L..,...&Cooper A..(2019).Widespread male sex bias in mammal fossil and museum collections.Proceedings of the National Academy of Sciences of the United States of America,116(38).
MLA	Gower G.,et al."Widespread male sex bias in mammal fossil and museum collections".Proceedings of the National Academy of Sciences of the United States of America 116.38(2019).