Voice and handgrip strength predict reproductive success in a group of indigenous African females
Evolutionary accounts of human traits are often based on proxies for genetic fitness (e.g., number of sex partners, facial attractiveness). Instead of using proxies, actual differences in reproductive success is a more direct measure of darwinian fitness. Certain voice acoustics such as fundamental...
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| Veröffentlicht in: | PloS one 2012-08, Vol.7 (8), p.e41811-e41811 |
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| creator | Atkinson, Jeremy Pipitone, R Nathan Sorokowska, Agnieszka Sorokowski, Piotr Mberira, Mara Bartels, Astrid Gallup, Jr, Gordon G |
| description | Evolutionary accounts of human traits are often based on proxies for genetic fitness (e.g., number of sex partners, facial attractiveness). Instead of using proxies, actual differences in reproductive success is a more direct measure of darwinian fitness. Certain voice acoustics such as fundamental frequency and measures of health such as handgrip strength correlate with proxies of fitness, yet there are few studies showing the relation of these traits to reproduction. Here, we explore whether the fundamental frequency of the voice and handgrip strength account for differences in actual reproduction among a population of natural fertility humans. Our results show that both fundamental frequency and handgrip strength predict several measures of reproductive success among a group of indigenous Namibian females, particularly amongst the elderly, with weight also predicting reproductive outcomes among males. These findings demonstrate that both hormonally regulated and phenotypic quality markers can be used as measures of darwinian fitness among humans living under conditions that resemble the evolutionary environment of Homo sapiens. We also argue that these findings provide support for the Grandmother Hypothesis. |
| doi_str_mv | 10.1371/journal.pone.0041811 |
| format | Article |
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Instead of using proxies, actual differences in reproductive success is a more direct measure of darwinian fitness. Certain voice acoustics such as fundamental frequency and measures of health such as handgrip strength correlate with proxies of fitness, yet there are few studies showing the relation of these traits to reproduction. Here, we explore whether the fundamental frequency of the voice and handgrip strength account for differences in actual reproduction among a population of natural fertility humans. Our results show that both fundamental frequency and handgrip strength predict several measures of reproductive success among a group of indigenous Namibian females, particularly amongst the elderly, with weight also predicting reproductive outcomes among males. These findings demonstrate that both hormonally regulated and phenotypic quality markers can be used as measures of darwinian fitness among humans living under conditions that resemble the evolutionary environment of Homo sapiens. We also argue that these findings provide support for the Grandmother Hypothesis.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0041811</identifier><identifier>PMID: 22870251</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Acoustics ; Adolescent ; Adult ; Adults ; African Continental Ancestry Group ; Aged ; Aged, 80 and over ; Androgens ; Biological evolution ; Biology ; Bone density ; Breeding success ; Evolution ; Female ; Females ; Fertility ; Fertility - physiology ; Fitness ; Geriatrics ; Hand Strength - physiology ; Humans ; Hunter-gatherers ; Hypotheses ; Males ; Medicine ; Menopause ; Mens health ; Middle Aged ; Mortality ; Namibia ; Older people ; Paternity ; Population ; Quality ; Quantitative Trait, Heritable ; Reproduction ; Reproductive fitness ; Resonant frequencies ; Sexual behavior ; Social and Behavioral Sciences ; Strength ; Success ; Testosterone ; Voice ; Voice - physiology ; Womens health</subject><ispartof>PloS one, 2012-08, Vol.7 (8), p.e41811-e41811</ispartof><rights>COPYRIGHT 2012 Public Library of Science</rights><rights>Atkinson et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: https://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2012 Atkinson et al 2012 Atkinson et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-a9fcdd3a86469daf1702f3ca22fabe0d96e41fbc42877ed3f078c7706cf7209a3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3411669/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3411669/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,2096,2915,23845,27901,27902,53766,53768,79343,79344</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22870251$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>O’Rourke, Dennis</contributor><creatorcontrib>Atkinson, Jeremy</creatorcontrib><creatorcontrib>Pipitone, R Nathan</creatorcontrib><creatorcontrib>Sorokowska, Agnieszka</creatorcontrib><creatorcontrib>Sorokowski, Piotr</creatorcontrib><creatorcontrib>Mberira, Mara</creatorcontrib><creatorcontrib>Bartels, Astrid</creatorcontrib><creatorcontrib>Gallup, Jr, Gordon G</creatorcontrib><title>Voice and handgrip strength predict reproductive success in a group of indigenous African females</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Evolutionary accounts of human traits are often based on proxies for genetic fitness (e.g., number of sex partners, facial attractiveness). Instead of using proxies, actual differences in reproductive success is a more direct measure of darwinian fitness. Certain voice acoustics such as fundamental frequency and measures of health such as handgrip strength correlate with proxies of fitness, yet there are few studies showing the relation of these traits to reproduction. Here, we explore whether the fundamental frequency of the voice and handgrip strength account for differences in actual reproduction among a population of natural fertility humans. Our results show that both fundamental frequency and handgrip strength predict several measures of reproductive success among a group of indigenous Namibian females, particularly amongst the elderly, with weight also predicting reproductive outcomes among males. These findings demonstrate that both hormonally regulated and phenotypic quality markers can be used as measures of darwinian fitness among humans living under conditions that resemble the evolutionary environment of Homo sapiens. We also argue that these findings provide support for the Grandmother Hypothesis.</description><subject>Acoustics</subject><subject>Adolescent</subject><subject>Adult</subject><subject>Adults</subject><subject>African Continental Ancestry Group</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Androgens</subject><subject>Biological evolution</subject><subject>Biology</subject><subject>Bone density</subject><subject>Breeding success</subject><subject>Evolution</subject><subject>Female</subject><subject>Females</subject><subject>Fertility</subject><subject>Fertility - physiology</subject><subject>Fitness</subject><subject>Geriatrics</subject><subject>Hand Strength - physiology</subject><subject>Humans</subject><subject>Hunter-gatherers</subject><subject>Hypotheses</subject><subject>Males</subject><subject>Medicine</subject><subject>Menopause</subject><subject>Mens health</subject><subject>Middle Aged</subject><subject>Mortality</subject><subject>Namibia</subject><subject>Older people</subject><subject>Paternity</subject><subject>Population</subject><subject>Quality</subject><subject>Quantitative Trait, Heritable</subject><subject>Reproduction</subject><subject>Reproductive fitness</subject><subject>Resonant frequencies</subject><subject>Sexual behavior</subject><subject>Social and Behavioral Sciences</subject><subject>Strength</subject><subject>Success</subject><subject>Testosterone</subject><subject>Voice</subject><subject>Voice - 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Instead of using proxies, actual differences in reproductive success is a more direct measure of darwinian fitness. Certain voice acoustics such as fundamental frequency and measures of health such as handgrip strength correlate with proxies of fitness, yet there are few studies showing the relation of these traits to reproduction. Here, we explore whether the fundamental frequency of the voice and handgrip strength account for differences in actual reproduction among a population of natural fertility humans. Our results show that both fundamental frequency and handgrip strength predict several measures of reproductive success among a group of indigenous Namibian females, particularly amongst the elderly, with weight also predicting reproductive outcomes among males. These findings demonstrate that both hormonally regulated and phenotypic quality markers can be used as measures of darwinian fitness among humans living under conditions that resemble the evolutionary environment of Homo sapiens. We also argue that these findings provide support for the Grandmother Hypothesis.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>22870251</pmid><doi>10.1371/journal.pone.0041811</doi><tpages>e41811</tpages><oa>free_for_read</oa></addata></record> |
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| source | Public Library of Science (PLoS) Journals Open Access; MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Acoustics Adolescent Adult Adults African Continental Ancestry Group Aged Aged, 80 and over Androgens Biological evolution Biology Bone density Breeding success Evolution Female Females Fertility Fertility - physiology Fitness Geriatrics Hand Strength - physiology Humans Hunter-gatherers Hypotheses Males Medicine Menopause Mens health Middle Aged Mortality Namibia Older people Paternity Population Quality Quantitative Trait, Heritable Reproduction Reproductive fitness Resonant frequencies Sexual behavior Social and Behavioral Sciences Strength Success Testosterone Voice Voice - physiology Womens health |
| title | Voice and handgrip strength predict reproductive success in a group of indigenous African females |
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