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Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar
Increasing the rate of food consumption is a common adaptive strategy that allows herbivores to compensate for declines in nutrient concentrations in plant tissues. Herbivores that are better able to compensate for dietary dilution may have selective advantages under nutritionally poor conditions. I...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5547126/ https://www.ncbi.nlm.nih.gov/pubmed/28784992 http://dx.doi.org/10.1038/s41598-017-07822-4 |
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author | Lee, Kwang Pum |
author_facet | Lee, Kwang Pum |
author_sort | Lee, Kwang Pum |
collection | PubMed |
description | Increasing the rate of food consumption is a common adaptive strategy that allows herbivores to compensate for declines in nutrient concentrations in plant tissues. Herbivores that are better able to compensate for dietary dilution may have selective advantages under nutritionally poor conditions. In order for compensatory feeding to respond to selection, there must be standing heritable variation for this trait. However, empirical data substantiating the adaptive significance and genetic variability of compensatory feeding are rare. By employing a full-sib, split-brood design, this study presents quantitative genetic analyses on the nutrient consumption rates of the generalist caterpillar, Spodoptera exigua, raised on semi-synthetic diets differing in nutrient concentrations. When encountering a diluted diet, caterpillars exhibited a compensatory increase in food consumption rate, but the extent of this increase was not sufficient to fully compensate for dietary dilution. A significant gene-environment interaction for consumption rate indicated that the capacity of caterpillars to compensate for dietary dilution varied across genotypes. The broad-sense heritability of compensatory feeding was 0.51. Caterpillar genotypes with a higher compensatory capacity suffered lower performance losses on the diluted diet than did those with a lower capacity. This study has implications for understanding how herbivores can evolutionarily respond to nutritional challenges. |
format | Online Article Text |
id | pubmed-5547126 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-55471262017-08-09 Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar Lee, Kwang Pum Sci Rep Article Increasing the rate of food consumption is a common adaptive strategy that allows herbivores to compensate for declines in nutrient concentrations in plant tissues. Herbivores that are better able to compensate for dietary dilution may have selective advantages under nutritionally poor conditions. In order for compensatory feeding to respond to selection, there must be standing heritable variation for this trait. However, empirical data substantiating the adaptive significance and genetic variability of compensatory feeding are rare. By employing a full-sib, split-brood design, this study presents quantitative genetic analyses on the nutrient consumption rates of the generalist caterpillar, Spodoptera exigua, raised on semi-synthetic diets differing in nutrient concentrations. When encountering a diluted diet, caterpillars exhibited a compensatory increase in food consumption rate, but the extent of this increase was not sufficient to fully compensate for dietary dilution. A significant gene-environment interaction for consumption rate indicated that the capacity of caterpillars to compensate for dietary dilution varied across genotypes. The broad-sense heritability of compensatory feeding was 0.51. Caterpillar genotypes with a higher compensatory capacity suffered lower performance losses on the diluted diet than did those with a lower capacity. This study has implications for understanding how herbivores can evolutionarily respond to nutritional challenges. Nature Publishing Group UK 2017-08-07 /pmc/articles/PMC5547126/ /pubmed/28784992 http://dx.doi.org/10.1038/s41598-017-07822-4 Text en © The Author(s) 2017 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/. |
spellingShingle | Article Lee, Kwang Pum Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
title | Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
title_full | Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
title_fullStr | Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
title_full_unstemmed | Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
title_short | Genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
title_sort | genetic variation in compensatory feeding for dietary dilution in a generalist caterpillar |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5547126/ https://www.ncbi.nlm.nih.gov/pubmed/28784992 http://dx.doi.org/10.1038/s41598-017-07822-4 |
work_keys_str_mv | AT leekwangpum geneticvariationincompensatoryfeedingfordietarydilutioninageneralistcaterpillar |