Genetic variation in heat-stress tolerance among South American Drosophila populations
Spatial or temporal differences in environmental variables, such as temperature, are ubiquitous in nature and impose stress on organisms. This is especially true for organisms that are isothermal with the environment, such as insects. Understanding the means by which insects respond to temperature a...
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todo:paper_00166707_v139_n10_p1331_Fallis2023-10-03T14:14:18Z Genetic variation in heat-stress tolerance among South American Drosophila populations Fallis, L.C. Fanara, J.J. Morgan, T.J. Heat survival Temperature stress resistance Thermotolerance animal article Drosophila melanogaster environment female genetic variability genetics heat shock response phenotype physiology South America Animals Drosophila melanogaster Environment Female Genetic Variation Heat-Shock Response Phenotype South America Drosophila melanogaster Hexapoda Spatial or temporal differences in environmental variables, such as temperature, are ubiquitous in nature and impose stress on organisms. This is especially true for organisms that are isothermal with the environment, such as insects. Understanding the means by which insects respond to temperature and how they will react to novel changes in environmental temperature is important for understanding the adaptive capacity of populations and to predict future trajectories of evolutionary change. The organismal response to heat has been identified as an important environmental variable for insects that can dramatically influence life history characters and geographic range. In the current study we surveyed the amount of variation in heat tolerance among Drosophila melanogaster populations collected at diverse sites along a latitudinal gradient in Argentina (24°-38°S). This is the first study to quantify heat tolerance in South American populations and our work demonstrates that most of the populations surveyed have abundant within-population phenotypic variation, while still exhibiting significant variation among populations. The one exception was the most heat tolerant population that comes from a climate exhibiting the warmest annual mean temperature. All together our results suggest there is abundant genetic variation for heat-tolerance phenotypes within and among natural populations of Drosophila and this variation has likely been shaped by environmental temperature. © 2012 Springer Science+Business Media B.V. Fil:Fanara, J.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00166707_v139_n10_p1331_Fallis |
| institution |
Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Heat survival Temperature stress resistance Thermotolerance animal article Drosophila melanogaster environment female genetic variability genetics heat shock response phenotype physiology South America Animals Drosophila melanogaster Environment Female Genetic Variation Heat-Shock Response Phenotype South America Drosophila melanogaster Hexapoda |
| spellingShingle |
Heat survival Temperature stress resistance Thermotolerance animal article Drosophila melanogaster environment female genetic variability genetics heat shock response phenotype physiology South America Animals Drosophila melanogaster Environment Female Genetic Variation Heat-Shock Response Phenotype South America Drosophila melanogaster Hexapoda Fallis, L.C. Fanara, J.J. Morgan, T.J. Genetic variation in heat-stress tolerance among South American Drosophila populations |
| topic_facet |
Heat survival Temperature stress resistance Thermotolerance animal article Drosophila melanogaster environment female genetic variability genetics heat shock response phenotype physiology South America Animals Drosophila melanogaster Environment Female Genetic Variation Heat-Shock Response Phenotype South America Drosophila melanogaster Hexapoda |
| description |
Spatial or temporal differences in environmental variables, such as temperature, are ubiquitous in nature and impose stress on organisms. This is especially true for organisms that are isothermal with the environment, such as insects. Understanding the means by which insects respond to temperature and how they will react to novel changes in environmental temperature is important for understanding the adaptive capacity of populations and to predict future trajectories of evolutionary change. The organismal response to heat has been identified as an important environmental variable for insects that can dramatically influence life history characters and geographic range. In the current study we surveyed the amount of variation in heat tolerance among Drosophila melanogaster populations collected at diverse sites along a latitudinal gradient in Argentina (24°-38°S). This is the first study to quantify heat tolerance in South American populations and our work demonstrates that most of the populations surveyed have abundant within-population phenotypic variation, while still exhibiting significant variation among populations. The one exception was the most heat tolerant population that comes from a climate exhibiting the warmest annual mean temperature. All together our results suggest there is abundant genetic variation for heat-tolerance phenotypes within and among natural populations of Drosophila and this variation has likely been shaped by environmental temperature. © 2012 Springer Science+Business Media B.V. |
| format |
JOUR |
| author |
Fallis, L.C. Fanara, J.J. Morgan, T.J. |
| author_facet |
Fallis, L.C. Fanara, J.J. Morgan, T.J. |
| author_sort |
Fallis, L.C. |
| title |
Genetic variation in heat-stress tolerance among South American Drosophila populations |
| title_short |
Genetic variation in heat-stress tolerance among South American Drosophila populations |
| title_full |
Genetic variation in heat-stress tolerance among South American Drosophila populations |
| title_fullStr |
Genetic variation in heat-stress tolerance among South American Drosophila populations |
| title_full_unstemmed |
Genetic variation in heat-stress tolerance among South American Drosophila populations |
| title_sort |
genetic variation in heat-stress tolerance among south american drosophila populations |
| url |
http://hdl.handle.net/20.500.12110/paper_00166707_v139_n10_p1331_Fallis |
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AT fallislc geneticvariationinheatstresstoleranceamongsouthamericandrosophilapopulations AT fanarajj geneticvariationinheatstresstoleranceamongsouthamericandrosophilapopulations AT morgantj geneticvariationinheatstresstoleranceamongsouthamericandrosophilapopulations |
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1807319152822583296 |