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The evolution of parental care in insects: A test of current hypotheses
Which sex should care for offspring is a fundamental question in evolution. Invertebrates, and insects in particular, show some of the most diverse kinds of parental care of all animals, but to date there has been no broad comparative study of the evolution of parental care in this group. Here, we t...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4529740/ https://www.ncbi.nlm.nih.gov/pubmed/25825047 http://dx.doi.org/10.1111/evo.12656 |
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author | Gilbert, James D J Manica, Andrea |
author_facet | Gilbert, James D J Manica, Andrea |
author_sort | Gilbert, James D J |
collection | PubMed |
description | Which sex should care for offspring is a fundamental question in evolution. Invertebrates, and insects in particular, show some of the most diverse kinds of parental care of all animals, but to date there has been no broad comparative study of the evolution of parental care in this group. Here, we test existing hypotheses of insect parental care evolution using a literature-compiled phylogeny of over 2000 species. To address substantial uncertainty in the insect phylogeny, we use a brute force approach based on multiple random resolutions of uncertain nodes. The main transitions were between no care (the probable ancestral state) and female care. Male care evolved exclusively from no care, supporting models where mating opportunity costs for caring males are reduced—for example, by caring for multiple broods—but rejecting the “enhanced fecundity” hypothesis that male care is favored because it allows females to avoid care costs. Biparental care largely arose by males joining caring females, and was more labile in Holometabola than in Hemimetabola. Insect care evolution most closely resembled amphibian care in general trajectory. Integrating these findings with the wealth of life history and ecological data in insects will allow testing of a rich vein of existing hypotheses. |
format | Online Article Text |
id | pubmed-4529740 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-45297402015-08-13 The evolution of parental care in insects: A test of current hypotheses Gilbert, James D J Manica, Andrea Evolution Original Articles Which sex should care for offspring is a fundamental question in evolution. Invertebrates, and insects in particular, show some of the most diverse kinds of parental care of all animals, but to date there has been no broad comparative study of the evolution of parental care in this group. Here, we test existing hypotheses of insect parental care evolution using a literature-compiled phylogeny of over 2000 species. To address substantial uncertainty in the insect phylogeny, we use a brute force approach based on multiple random resolutions of uncertain nodes. The main transitions were between no care (the probable ancestral state) and female care. Male care evolved exclusively from no care, supporting models where mating opportunity costs for caring males are reduced—for example, by caring for multiple broods—but rejecting the “enhanced fecundity” hypothesis that male care is favored because it allows females to avoid care costs. Biparental care largely arose by males joining caring females, and was more labile in Holometabola than in Hemimetabola. Insect care evolution most closely resembled amphibian care in general trajectory. Integrating these findings with the wealth of life history and ecological data in insects will allow testing of a rich vein of existing hypotheses. Blackwell Publishing Ltd 2015-05 2015-04-30 /pmc/articles/PMC4529740/ /pubmed/25825047 http://dx.doi.org/10.1111/evo.12656 Text en © 2015 The Author(s). Evolution published by Wiley Periodicals, Inc. on behalf of The Society for the Study of Evolution. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Gilbert, James D J Manica, Andrea The evolution of parental care in insects: A test of current hypotheses |
title | The evolution of parental care in insects: A test of current hypotheses |
title_full | The evolution of parental care in insects: A test of current hypotheses |
title_fullStr | The evolution of parental care in insects: A test of current hypotheses |
title_full_unstemmed | The evolution of parental care in insects: A test of current hypotheses |
title_short | The evolution of parental care in insects: A test of current hypotheses |
title_sort | evolution of parental care in insects: a test of current hypotheses |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4529740/ https://www.ncbi.nlm.nih.gov/pubmed/25825047 http://dx.doi.org/10.1111/evo.12656 |
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