Phenotypic differences between highlanders and lowlanders in Papua New Guinea.

<h4>Objectives</h4>Altitude is one of the most demanding environmental pressures for human populations. Highlanders from Asia, America and Africa have been shown to exhibit different biological adaptations, but Oceanian populations remain understudied [Woolcock et al., 1972; Cotes et al....

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Autores principales: Mathilde André, Nicolas Brucato, Sébastien Plutniak, Jason Kariwiga, John Muke, Adeline Morez, Matthew Leavesley, Mayukh Mondal, François-Xavier Ricaut
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Publicado: Public Library of Science (PLoS) 2021
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Acceso en línea:https://doaj.org/article/5aebbc8524f14c0a908d0ab4e0f0a14f
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spelling oai:doaj.org-article:5aebbc8524f14c0a908d0ab4e0f0a14f2021-12-02T20:06:45ZPhenotypic differences between highlanders and lowlanders in Papua New Guinea.1932-620310.1371/journal.pone.0253921https://doaj.org/article/5aebbc8524f14c0a908d0ab4e0f0a14f2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0253921https://doaj.org/toc/1932-6203<h4>Objectives</h4>Altitude is one of the most demanding environmental pressures for human populations. Highlanders from Asia, America and Africa have been shown to exhibit different biological adaptations, but Oceanian populations remain understudied [Woolcock et al., 1972; Cotes et al., 1974; Senn et al., 2010]. We tested the hypothesis that highlanders phenotypically differ from lowlanders in Papua New Guinea, as a result of inhabiting the highest mountains in Oceania for at least 20,000 years.<h4>Materials and methods</h4>We collected data for 13 different phenotypes related to altitude for 162 Papua New Guineans living at high altitude (Mont Wilhelm, 2,300-2,700 m above sea level (a.s.l.) and low altitude (Daru, <100m a.s.l.). Multilinear regressions were performed to detect differences between highlanders and lowlanders for phenotypic measurements related to body proportions, pulmonary function, and the circulatory system.<h4>Results</h4>Six phenotypes were significantly different between Papua New Guinean highlanders and lowlanders. Highlanders show shorter height (p-value = 0.001), smaller waist circumference (p-value = 0.002), larger Forced Vital Capacity (FVC) (p-value = 0.008), larger maximal (p-value = 3.20e -4) and minimal chest depth (p-value = 2.37e -5) and higher haemoglobin concentration (p-value = 3.36e -4).<h4>Discussion</h4>Our study reports specific phenotypes in Papua New Guinean highlanders potentially related to altitude adaptation. Similar to other human groups adapted to high altitude, the evolutionary history of Papua New Guineans appears to have also followed an adaptive biological strategy for altitude.Mathilde AndréNicolas BrucatoSébastien PlutniakJason KariwigaJohn MukeAdeline MorezMatthew LeavesleyMayukh MondalFrançois-Xavier RicautPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0253921 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Mathilde André
Nicolas Brucato
Sébastien Plutniak
Jason Kariwiga
John Muke
Adeline Morez
Matthew Leavesley
Mayukh Mondal
François-Xavier Ricaut
Phenotypic differences between highlanders and lowlanders in Papua New Guinea.
description <h4>Objectives</h4>Altitude is one of the most demanding environmental pressures for human populations. Highlanders from Asia, America and Africa have been shown to exhibit different biological adaptations, but Oceanian populations remain understudied [Woolcock et al., 1972; Cotes et al., 1974; Senn et al., 2010]. We tested the hypothesis that highlanders phenotypically differ from lowlanders in Papua New Guinea, as a result of inhabiting the highest mountains in Oceania for at least 20,000 years.<h4>Materials and methods</h4>We collected data for 13 different phenotypes related to altitude for 162 Papua New Guineans living at high altitude (Mont Wilhelm, 2,300-2,700 m above sea level (a.s.l.) and low altitude (Daru, <100m a.s.l.). Multilinear regressions were performed to detect differences between highlanders and lowlanders for phenotypic measurements related to body proportions, pulmonary function, and the circulatory system.<h4>Results</h4>Six phenotypes were significantly different between Papua New Guinean highlanders and lowlanders. Highlanders show shorter height (p-value = 0.001), smaller waist circumference (p-value = 0.002), larger Forced Vital Capacity (FVC) (p-value = 0.008), larger maximal (p-value = 3.20e -4) and minimal chest depth (p-value = 2.37e -5) and higher haemoglobin concentration (p-value = 3.36e -4).<h4>Discussion</h4>Our study reports specific phenotypes in Papua New Guinean highlanders potentially related to altitude adaptation. Similar to other human groups adapted to high altitude, the evolutionary history of Papua New Guineans appears to have also followed an adaptive biological strategy for altitude.
format article
author Mathilde André
Nicolas Brucato
Sébastien Plutniak
Jason Kariwiga
John Muke
Adeline Morez
Matthew Leavesley
Mayukh Mondal
François-Xavier Ricaut
author_facet Mathilde André
Nicolas Brucato
Sébastien Plutniak
Jason Kariwiga
John Muke
Adeline Morez
Matthew Leavesley
Mayukh Mondal
François-Xavier Ricaut
author_sort Mathilde André
title Phenotypic differences between highlanders and lowlanders in Papua New Guinea.
title_short Phenotypic differences between highlanders and lowlanders in Papua New Guinea.
title_full Phenotypic differences between highlanders and lowlanders in Papua New Guinea.
title_fullStr Phenotypic differences between highlanders and lowlanders in Papua New Guinea.
title_full_unstemmed Phenotypic differences between highlanders and lowlanders in Papua New Guinea.
title_sort phenotypic differences between highlanders and lowlanders in papua new guinea.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/5aebbc8524f14c0a908d0ab4e0f0a14f
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