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Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti
Mathematical models that incorporate the temperature dependence of lab-measured life history traits are increasingly being used to predict how climatic warming will affect ectotherms, including disease vectors and other arthropods. These temperature-trait relationships are typically measured under l...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8770499/ https://www.ncbi.nlm.nih.gov/pubmed/35046515 http://dx.doi.org/10.1038/s42003-022-03030-7 |
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author | Huxley, Paul J. Murray, Kris A. Pawar, Samraat Cator, Lauren J. |
author_facet | Huxley, Paul J. Murray, Kris A. Pawar, Samraat Cator, Lauren J. |
author_sort | Huxley, Paul J. |
collection | PubMed |
description | Mathematical models that incorporate the temperature dependence of lab-measured life history traits are increasingly being used to predict how climatic warming will affect ectotherms, including disease vectors and other arthropods. These temperature-trait relationships are typically measured under laboratory conditions that ignore how conspecific competition in depleting resource environments—a commonly occurring scenario in nature—regulates natural populations. Here, we used laboratory experiments on the mosquito Aedes aegypti, combined with a stage-structured population model, to investigate this issue. We find that intensified larval competition in ecologically-realistic depleting resource environments can significantly diminish the vector’s maximal population-level fitness across the entire temperature range, cause a ~6 °C decrease in the optimal temperature for fitness, and contract its thermal niche width by ~10 °C. Our results provide evidence for the importance of considering intra-specific competition under depleting resources when predicting how arthropod populations will respond to climatic warming. |
format | Online Article Text |
id | pubmed-8770499 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-87704992022-02-04 Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti Huxley, Paul J. Murray, Kris A. Pawar, Samraat Cator, Lauren J. Commun Biol Article Mathematical models that incorporate the temperature dependence of lab-measured life history traits are increasingly being used to predict how climatic warming will affect ectotherms, including disease vectors and other arthropods. These temperature-trait relationships are typically measured under laboratory conditions that ignore how conspecific competition in depleting resource environments—a commonly occurring scenario in nature—regulates natural populations. Here, we used laboratory experiments on the mosquito Aedes aegypti, combined with a stage-structured population model, to investigate this issue. We find that intensified larval competition in ecologically-realistic depleting resource environments can significantly diminish the vector’s maximal population-level fitness across the entire temperature range, cause a ~6 °C decrease in the optimal temperature for fitness, and contract its thermal niche width by ~10 °C. Our results provide evidence for the importance of considering intra-specific competition under depleting resources when predicting how arthropod populations will respond to climatic warming. Nature Publishing Group UK 2022-01-19 /pmc/articles/PMC8770499/ /pubmed/35046515 http://dx.doi.org/10.1038/s42003-022-03030-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Huxley, Paul J. Murray, Kris A. Pawar, Samraat Cator, Lauren J. Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti |
title | Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti |
title_full | Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti |
title_fullStr | Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti |
title_full_unstemmed | Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti |
title_short | Competition and resource depletion shape the thermal response of population fitness in Aedes aegypti |
title_sort | competition and resource depletion shape the thermal response of population fitness in aedes aegypti |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8770499/ https://www.ncbi.nlm.nih.gov/pubmed/35046515 http://dx.doi.org/10.1038/s42003-022-03030-7 |
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