The evolution of thermal performance in native and invasive populations of Mimulus guttatus
Abstract The rise of globalization has spread organisms beyond their natural range, allowing further opportunity for species to adapt to novel environments and potentially become invaders. Yet, the role of thermal niche evolution in promoting the success of invasive species remains poorly understood...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Oxford University Press
2022-04-01
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| Series: | Evolution Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/evl3.275 |
| _version_ | 1797763538855395328 |
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| author | Aleah Querns Rachel Wooliver Mario Vallejo‐Marín Seema Nayan Sheth |
| author_facet | Aleah Querns Rachel Wooliver Mario Vallejo‐Marín Seema Nayan Sheth |
| author_sort | Aleah Querns |
| collection | DOAJ |
| description | Abstract The rise of globalization has spread organisms beyond their natural range, allowing further opportunity for species to adapt to novel environments and potentially become invaders. Yet, the role of thermal niche evolution in promoting the success of invasive species remains poorly understood. Here, we use thermal performance curves (TPCs) to test hypotheses about thermal adaptation during the invasion process. First, we tested the hypothesis that if species largely conserve their thermal niche in the introduced range, invasive populations may not evolve distinct TPCs relative to native populations, against the alternative hypothesis that thermal niche and therefore TPC evolution has occurred in the invasive range. Second, we tested the hypothesis that clines of TPC parameters are shallower or absent in the invasive range, against the alternative hypothesis that with sufficient time, standing genetic variation, and temperature‐mediated selection, invasive populations would re‐establish clines found in the native range in response to temperature gradients. To test these hypotheses, we built TPCs for 18 native (United States) and 13 invasive (United Kingdom) populations of the yellow monkeyflower, Mimulus guttatus. We grew clones of multiple genotypes per population at six temperature regimes in growth chambers. We found that invasive populations have not evolved different thermal optima or performance breadths, providing evidence for evolutionary stasis of thermal performance between the native and invasive ranges after over 200 years post introduction. Thermal optimum increased with mean annual temperature in the native range, indicating some adaptive differentiation among native populations that was absent in the invasive range. Further, native and invasive populations did not exhibit adaptive clines in thermal performance breadth with latitude or temperature seasonality. These findings suggest that TPCs remained unaltered post invasion, and that invasion may proceed via broad thermal tolerance and establishment in already climatically suitable areas rather than rapid evolution upon introduction. |
| first_indexed | 2024-03-12T19:43:54Z |
| format | Article |
| id | doaj.art-0c486b7fceac46a79cfd9f86878d9c02 |
| institution | Directory Open Access Journal |
| issn | 2056-3744 |
| language | English |
| last_indexed | 2024-03-12T19:43:54Z |
| publishDate | 2022-04-01 |
| publisher | Oxford University Press |
| record_format | Article |
| series | Evolution Letters |
| spelling | doaj.art-0c486b7fceac46a79cfd9f86878d9c022023-08-02T03:39:39ZengOxford University PressEvolution Letters2056-37442022-04-016213614810.1002/evl3.275The evolution of thermal performance in native and invasive populations of Mimulus guttatusAleah Querns0Rachel Wooliver1Mario Vallejo‐Marín2Seema Nayan Sheth3Department of Plant and Microbial Biology North Carolina State University Raleigh North Carolina 27695Department of Plant and Microbial Biology North Carolina State University Raleigh North Carolina 27695Biological and Environmental Sciences University of Stirling Stirling FK9 4LA United KingdomDepartment of Plant and Microbial Biology North Carolina State University Raleigh North Carolina 27695Abstract The rise of globalization has spread organisms beyond their natural range, allowing further opportunity for species to adapt to novel environments and potentially become invaders. Yet, the role of thermal niche evolution in promoting the success of invasive species remains poorly understood. Here, we use thermal performance curves (TPCs) to test hypotheses about thermal adaptation during the invasion process. First, we tested the hypothesis that if species largely conserve their thermal niche in the introduced range, invasive populations may not evolve distinct TPCs relative to native populations, against the alternative hypothesis that thermal niche and therefore TPC evolution has occurred in the invasive range. Second, we tested the hypothesis that clines of TPC parameters are shallower or absent in the invasive range, against the alternative hypothesis that with sufficient time, standing genetic variation, and temperature‐mediated selection, invasive populations would re‐establish clines found in the native range in response to temperature gradients. To test these hypotheses, we built TPCs for 18 native (United States) and 13 invasive (United Kingdom) populations of the yellow monkeyflower, Mimulus guttatus. We grew clones of multiple genotypes per population at six temperature regimes in growth chambers. We found that invasive populations have not evolved different thermal optima or performance breadths, providing evidence for evolutionary stasis of thermal performance between the native and invasive ranges after over 200 years post introduction. Thermal optimum increased with mean annual temperature in the native range, indicating some adaptive differentiation among native populations that was absent in the invasive range. Further, native and invasive populations did not exhibit adaptive clines in thermal performance breadth with latitude or temperature seasonality. These findings suggest that TPCs remained unaltered post invasion, and that invasion may proceed via broad thermal tolerance and establishment in already climatically suitable areas rather than rapid evolution upon introduction.https://doi.org/10.1002/evl3.275Adaptive divergenceevolutionary ecologyinvasion ecologylatitudinal gradientniche conservatismphenotypic cline |
| spellingShingle | Aleah Querns Rachel Wooliver Mario Vallejo‐Marín Seema Nayan Sheth The evolution of thermal performance in native and invasive populations of Mimulus guttatus Evolution Letters Adaptive divergence evolutionary ecology invasion ecology latitudinal gradient niche conservatism phenotypic cline |
| title | The evolution of thermal performance in native and invasive populations of Mimulus guttatus |
| title_full | The evolution of thermal performance in native and invasive populations of Mimulus guttatus |
| title_fullStr | The evolution of thermal performance in native and invasive populations of Mimulus guttatus |
| title_full_unstemmed | The evolution of thermal performance in native and invasive populations of Mimulus guttatus |
| title_short | The evolution of thermal performance in native and invasive populations of Mimulus guttatus |
| title_sort | evolution of thermal performance in native and invasive populations of mimulus guttatus |
| topic | Adaptive divergence evolutionary ecology invasion ecology latitudinal gradient niche conservatism phenotypic cline |
| url | https://doi.org/10.1002/evl3.275 |
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