Sex ratios in the arctic—do man‐made chemicals matter?
Abstract Objectives: The objective was to analyze the variation of secondary sex ratios across the Arctic and to estimate the time trend. The rationale for this was claims in news media that, in the Arctic, sex ratios have become reduced due to exposure to anthropogenic contaminants in the environme...
Published in: | American Journal of Human Biology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2012
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ajhb.22214 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fajhb.22214 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajhb.22214 |
id |
crwiley:10.1002/ajhb.22214 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ajhb.22214 2024-06-02T08:00:55+00:00 Sex ratios in the arctic—do man‐made chemicals matter? Bjerregaard, Peter Chatwood, Susan Denning, Bryany Joseph, Lawrence Young, T. Kue 2012 http://dx.doi.org/10.1002/ajhb.22214 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fajhb.22214 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajhb.22214 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Human Biology volume 24, issue 2, page 165-169 ISSN 1042-0533 1520-6300 journal-article 2012 crwiley https://doi.org/10.1002/ajhb.22214 2024-05-03T10:37:16Z Abstract Objectives: The objective was to analyze the variation of secondary sex ratios across the Arctic and to estimate the time trend. The rationale for this was claims in news media that, in the Arctic, sex ratios have become reduced due to exposure to anthropogenic contaminants in the environment. Methods: Data was collected from 27 circumpolar jurisdictions from public websites of the eight Arctic countries. Sex ratios at birth were calculated for each jurisdiction and each available year. Linear regression models of the sex ratios across time were fit within each jurisdiction to estimate the change in sex ratio over time. Results: All male:female sex ratios were close to 1.05 with time trends close to 0. In a Bayesian hierarchical model overall sex ratio was estimated at 1.054 (95% confidence interval 1.048, 1.058). The estimate for the 10‐year slope across all jurisdictions was 0.0010 (95% confidence interval −0.0021, 0.0046). Separate analyses of indigenous populations in Alaska and Greenland gave similar results and similar sex ratios were found among Greenland Inuit in 1900 and today. Conclusions: The absence of deviation of the secondary sex ratio in any of the Arctic jurisdictions indicates that the contaminants that are present are not disrupting endocrine systems to the extent that sex ratios are being affected. Am. J. Hum. Biol., 2012. © 2012 Wiley Periodicals, Inc. Article in Journal/Newspaper Arctic Greenland inuit Alaska Wiley Online Library Arctic Greenland American Journal of Human Biology 24 2 165 169 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Objectives: The objective was to analyze the variation of secondary sex ratios across the Arctic and to estimate the time trend. The rationale for this was claims in news media that, in the Arctic, sex ratios have become reduced due to exposure to anthropogenic contaminants in the environment. Methods: Data was collected from 27 circumpolar jurisdictions from public websites of the eight Arctic countries. Sex ratios at birth were calculated for each jurisdiction and each available year. Linear regression models of the sex ratios across time were fit within each jurisdiction to estimate the change in sex ratio over time. Results: All male:female sex ratios were close to 1.05 with time trends close to 0. In a Bayesian hierarchical model overall sex ratio was estimated at 1.054 (95% confidence interval 1.048, 1.058). The estimate for the 10‐year slope across all jurisdictions was 0.0010 (95% confidence interval −0.0021, 0.0046). Separate analyses of indigenous populations in Alaska and Greenland gave similar results and similar sex ratios were found among Greenland Inuit in 1900 and today. Conclusions: The absence of deviation of the secondary sex ratio in any of the Arctic jurisdictions indicates that the contaminants that are present are not disrupting endocrine systems to the extent that sex ratios are being affected. Am. J. Hum. Biol., 2012. © 2012 Wiley Periodicals, Inc. |
format |
Article in Journal/Newspaper |
author |
Bjerregaard, Peter Chatwood, Susan Denning, Bryany Joseph, Lawrence Young, T. Kue |
spellingShingle |
Bjerregaard, Peter Chatwood, Susan Denning, Bryany Joseph, Lawrence Young, T. Kue Sex ratios in the arctic—do man‐made chemicals matter? |
author_facet |
Bjerregaard, Peter Chatwood, Susan Denning, Bryany Joseph, Lawrence Young, T. Kue |
author_sort |
Bjerregaard, Peter |
title |
Sex ratios in the arctic—do man‐made chemicals matter? |
title_short |
Sex ratios in the arctic—do man‐made chemicals matter? |
title_full |
Sex ratios in the arctic—do man‐made chemicals matter? |
title_fullStr |
Sex ratios in the arctic—do man‐made chemicals matter? |
title_full_unstemmed |
Sex ratios in the arctic—do man‐made chemicals matter? |
title_sort |
sex ratios in the arctic—do man‐made chemicals matter? |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1002/ajhb.22214 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fajhb.22214 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajhb.22214 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland inuit Alaska |
genre_facet |
Arctic Greenland inuit Alaska |
op_source |
American Journal of Human Biology volume 24, issue 2, page 165-169 ISSN 1042-0533 1520-6300 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ajhb.22214 |
container_title |
American Journal of Human Biology |
container_volume |
24 |
container_issue |
2 |
container_start_page |
165 |
op_container_end_page |
169 |
_version_ |
1800745138183471104 |