Developmental thermal plasticity among Drosophila melanogaster populations

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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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Autores principales: Fallis, L.C., Fanara, J.J., Morgan, T.J.
Formato: INPR
Lenguaje:English
Materias:
Chill-coma recovery
Cold acclimation
Phenotypic plasticity
Temperature stress resistance
Thermotolerance
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1010061X_v_n_p_Fallis
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_1010061X_v_n_p_Fallis
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spelling todo:paper_1010061X_v_n_p_Fallis2023-10-03T15:55:57Z Developmental thermal plasticity among Drosophila melanogaster populations Fallis, L.C. Fanara, J.J. Morgan, T.J. Chill-coma recovery Cold acclimation Phenotypic plasticity Temperature stress resistance Thermotolerance 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 The Authors. Fil:Fanara, J.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. INPR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1010061X_v_n_p_Fallis
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Chill-coma recovery
Cold acclimation
Phenotypic plasticity
Temperature stress resistance
Thermotolerance
spellingShingle Chill-coma recovery
Cold acclimation
Phenotypic plasticity
Temperature stress resistance
Thermotolerance
Fallis, L.C.
Fanara, J.J.
Morgan, T.J.
Developmental thermal plasticity among Drosophila melanogaster populations
topic_facet Chill-coma recovery
Cold acclimation
Phenotypic plasticity
Temperature stress resistance
Thermotolerance
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 The Authors.
format INPR
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 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
url http://hdl.handle.net/20.500.12110/paper_1010061X_v_n_p_Fallis
work_keys_str_mv AT fallislc developmentalthermalplasticityamongdrosophilamelanogasterpopulations
AT fanarajj developmentalthermalplasticityamongdrosophilamelanogasterpopulations
AT morgantj developmentalthermalplasticityamongdrosophilamelanogasterpopulations
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