Developmental thermal plasticity among Drosophila melanogaster populations
Many biotic and abiotic variables influence the dispersal and distribution of organisms. Temperature has a major role in determining these patterns because it changes daily, seasonally and spatially, and these fluctuations have a significant impact on an organism's behaviour and fitness. Most e...
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paper:paper_1010061X_v27_n3_p557_Fallis2023-06-08T15:59:30Z Developmental thermal plasticity among Drosophila melanogaster populations Fanara, Juan Jose Chill-coma recovery Cold acclimation Phenotypic plasticity Temperature stress resistance Thermotolerance animal Drosophila melanogaster female genetic variation genetics genotype physiology South America temperature Animals Drosophila melanogaster Female Genetic Variation Genotype South America Temperature Many biotic and abiotic variables influence the dispersal and distribution of organisms. Temperature has a major role in determining these patterns because it changes daily, seasonally and spatially, and these fluctuations have a significant impact on an organism's behaviour and fitness. Most ecologically relevant phenotypes that are adaptive are also complex and thus they are influenced by many underlying loci that interact with the environment. In this study, we quantified the degree of thermal phenotypic plasticity within and among populations by measuring chill-coma recovery times of lines reared from egg to adult at two different environmental temperatures. We used sixty genotypes from six natural populations of Drosophila melanogaster sampled along a latitudinal gradient in South America. We found significant variation in thermal plasticity both within and among populations. All populations exhibit a cold acclimation response, with flies reared at lower temperatures having increased resistance to cold. We tested a series of environmental parameters against the variation in population mean thermal plasticity and discovered the mean thermal plasticity was significantly correlated with altitude of origin of the population. Pairing our data with previous experiments on viability fitness assays in the same populations in fixed and variable environments suggests an adaptive role of this thermal plasticity in variable laboratory environments. Altogether, these data demonstrate abundant variation in adaptive thermal plasticity within and among populations. © 2014 European Society For Evolutionary Biology. Fil:Fanara, J.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v27_n3_p557_Fallis http://hdl.handle.net/20.500.12110/paper_1010061X_v27_n3_p557_Fallis |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Chill-coma recovery Cold acclimation Phenotypic plasticity Temperature stress resistance Thermotolerance animal Drosophila melanogaster female genetic variation genetics genotype physiology South America temperature Animals Drosophila melanogaster Female Genetic Variation Genotype South America Temperature |
| spellingShingle |
Chill-coma recovery Cold acclimation Phenotypic plasticity Temperature stress resistance Thermotolerance animal Drosophila melanogaster female genetic variation genetics genotype physiology South America temperature Animals Drosophila melanogaster Female Genetic Variation Genotype South America Temperature Fanara, Juan Jose Developmental thermal plasticity among Drosophila melanogaster populations |
| topic_facet |
Chill-coma recovery Cold acclimation Phenotypic plasticity Temperature stress resistance Thermotolerance animal Drosophila melanogaster female genetic variation genetics genotype physiology South America temperature Animals Drosophila melanogaster Female Genetic Variation Genotype South America Temperature |
| description |
Many biotic and abiotic variables influence the dispersal and distribution of organisms. Temperature has a major role in determining these patterns because it changes daily, seasonally and spatially, and these fluctuations have a significant impact on an organism's behaviour and fitness. Most ecologically relevant phenotypes that are adaptive are also complex and thus they are influenced by many underlying loci that interact with the environment. In this study, we quantified the degree of thermal phenotypic plasticity within and among populations by measuring chill-coma recovery times of lines reared from egg to adult at two different environmental temperatures. We used sixty genotypes from six natural populations of Drosophila melanogaster sampled along a latitudinal gradient in South America. We found significant variation in thermal plasticity both within and among populations. All populations exhibit a cold acclimation response, with flies reared at lower temperatures having increased resistance to cold. We tested a series of environmental parameters against the variation in population mean thermal plasticity and discovered the mean thermal plasticity was significantly correlated with altitude of origin of the population. Pairing our data with previous experiments on viability fitness assays in the same populations in fixed and variable environments suggests an adaptive role of this thermal plasticity in variable laboratory environments. Altogether, these data demonstrate abundant variation in adaptive thermal plasticity within and among populations. © 2014 European Society For Evolutionary Biology. |
| author |
Fanara, Juan Jose |
| author_facet |
Fanara, Juan Jose |
| author_sort |
Fanara, Juan Jose |
| title |
Developmental thermal plasticity among Drosophila melanogaster populations |
| title_short |
Developmental thermal plasticity among Drosophila melanogaster populations |
| title_full |
Developmental thermal plasticity among Drosophila melanogaster populations |
| title_fullStr |
Developmental thermal plasticity among Drosophila melanogaster populations |
| title_full_unstemmed |
Developmental thermal plasticity among Drosophila melanogaster populations |
| title_sort |
developmental thermal plasticity among drosophila melanogaster populations |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v27_n3_p557_Fallis http://hdl.handle.net/20.500.12110/paper_1010061X_v27_n3_p557_Fallis |
| work_keys_str_mv |
AT fanarajuanjose developmentalthermalplasticityamongdrosophilamelanogasterpopulations |
| _version_ |
1768544605282762752 |