Cargando…
Predation risk shapes the degree of placentation in natural populations of live‐bearing fish
The placenta is a complex life‐history trait that is ubiquitous across the tree of life. Theory proposes that the placenta evolves in response to high performance‐demanding conditions by shifting maternal investment from pre‐ to post‐fertilisation, thereby reducing a female’s reproductive burden dur...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7187176/ https://www.ncbi.nlm.nih.gov/pubmed/32166847 http://dx.doi.org/10.1111/ele.13487 |
_version_ | 1783527118330658816 |
---|---|
author | Hagmayer, Andres Furness, Andrew I. Reznick, David N. Dekker, Myrthe L. Pollux, Bart J. A. |
author_facet | Hagmayer, Andres Furness, Andrew I. Reznick, David N. Dekker, Myrthe L. Pollux, Bart J. A. |
author_sort | Hagmayer, Andres |
collection | PubMed |
description | The placenta is a complex life‐history trait that is ubiquitous across the tree of life. Theory proposes that the placenta evolves in response to high performance‐demanding conditions by shifting maternal investment from pre‐ to post‐fertilisation, thereby reducing a female’s reproductive burden during pregnancy. We test this hypothesis by studying populations of the fish species Poeciliopsis retropinna in Costa Rica. We found substantial variation in the degree of placentation among natural populations associated with predation risk: females from high predation populations had significantly higher degrees of placentation compared to low predation females, while number, size and quality of offspring at birth remained unaffected. Moreover, a higher degree of placentation correlated with a lower reproductive burden and hence likely an improved swimming performance during pregnancy. Our study advances an adaptive explanation for why the placenta evolves by arguing that an increased degree of placentation offers a selective advantage in high predation environments. |
format | Online Article Text |
id | pubmed-7187176 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-71871762020-04-28 Predation risk shapes the degree of placentation in natural populations of live‐bearing fish Hagmayer, Andres Furness, Andrew I. Reznick, David N. Dekker, Myrthe L. Pollux, Bart J. A. Ecol Lett Letters The placenta is a complex life‐history trait that is ubiquitous across the tree of life. Theory proposes that the placenta evolves in response to high performance‐demanding conditions by shifting maternal investment from pre‐ to post‐fertilisation, thereby reducing a female’s reproductive burden during pregnancy. We test this hypothesis by studying populations of the fish species Poeciliopsis retropinna in Costa Rica. We found substantial variation in the degree of placentation among natural populations associated with predation risk: females from high predation populations had significantly higher degrees of placentation compared to low predation females, while number, size and quality of offspring at birth remained unaffected. Moreover, a higher degree of placentation correlated with a lower reproductive burden and hence likely an improved swimming performance during pregnancy. Our study advances an adaptive explanation for why the placenta evolves by arguing that an increased degree of placentation offers a selective advantage in high predation environments. John Wiley and Sons Inc. 2020-03-12 2020-05 /pmc/articles/PMC7187176/ /pubmed/32166847 http://dx.doi.org/10.1111/ele.13487 Text en © 2020 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Letters Hagmayer, Andres Furness, Andrew I. Reznick, David N. Dekker, Myrthe L. Pollux, Bart J. A. Predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
title | Predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
title_full | Predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
title_fullStr | Predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
title_full_unstemmed | Predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
title_short | Predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
title_sort | predation risk shapes the degree of placentation in natural populations of live‐bearing fish |
topic | Letters |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7187176/ https://www.ncbi.nlm.nih.gov/pubmed/32166847 http://dx.doi.org/10.1111/ele.13487 |
work_keys_str_mv | AT hagmayerandres predationriskshapesthedegreeofplacentationinnaturalpopulationsoflivebearingfish AT furnessandrewi predationriskshapesthedegreeofplacentationinnaturalpopulationsoflivebearingfish AT reznickdavidn predationriskshapesthedegreeofplacentationinnaturalpopulationsoflivebearingfish AT dekkermyrthel predationriskshapesthedegreeofplacentationinnaturalpopulationsoflivebearingfish AT polluxbartja predationriskshapesthedegreeofplacentationinnaturalpopulationsoflivebearingfish |