Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress
Stress resistance characters are valuable tools for the study of acclimation potential, adaptive strategies and biogeographic patterns in species exposed to environmental variability. Water stress is a challenge to terrestrial arthropods because of their small size and relatively high area: volume r...
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todo:paper_02697653_v27_n3_p505_Sassi2023-10-03T15:14:18Z Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress Sassi, P.L. Hasson, E. Clines Desiccation resistance Drosophila Intraspecific variation Sexual dimorphism adaptation aridity cline desiccation environmental stress evolutionary biology fly genetic variation genotype-environment interaction intraspecific variation life history trait reproductive strategy sex-related difference sexual dimorphism survival water stress Argentina Arthropoda Drosophila buzzatii Stress resistance characters are valuable tools for the study of acclimation potential, adaptive strategies and biogeographic patterns in species exposed to environmental variability. Water stress is a challenge to terrestrial arthropods because of their small size and relatively high area: volume ratio. Fruit flies have been investigated to record adaptive morphological and physiological traits, as well as to test their responses to stressful factors. In this study, we investigate the ability to cope with water stress, by examining variation in desiccation resistance in a species that lives mainly in desert lands. Specifically, we explored the genetic and ecological basis of desiccation resistance in populations of Drosophila buzzatii from Northern Argentina. We used a common garden experiment with desiccation treatments on a number of isofemale lines from four populations along an aridity gradient. Our results revealed significant among-population differentiation and substantial amounts of genetic variation for desiccation resistance. We also detected significant genotype-by-environment and genotype-by-sex interactions indicative that desiccation resistance responses of the lines assayed were environment- and sex-specific. In addition, we observed clinal variation in female desiccation resistance along gradients of altitude, temperature and humidity; that desiccation resistance is a sexually dimorphic trait, and that sexual dimorphism increased along the aridity and altitudinal gradients. Based on current evidence, we propose that the observed sex-specific responses may reflect different life history traits, and survival and reproductive strategies in different ecological scenarios. © 2012 Springer Science+Business Media Dordrecht. Fil:Hasson, E. 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_02697653_v27_n3_p505_Sassi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Clines Desiccation resistance Drosophila Intraspecific variation Sexual dimorphism adaptation aridity cline desiccation environmental stress evolutionary biology fly genetic variation genotype-environment interaction intraspecific variation life history trait reproductive strategy sex-related difference sexual dimorphism survival water stress Argentina Arthropoda Drosophila buzzatii |
| spellingShingle |
Clines Desiccation resistance Drosophila Intraspecific variation Sexual dimorphism adaptation aridity cline desiccation environmental stress evolutionary biology fly genetic variation genotype-environment interaction intraspecific variation life history trait reproductive strategy sex-related difference sexual dimorphism survival water stress Argentina Arthropoda Drosophila buzzatii Sassi, P.L. Hasson, E. Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress |
| topic_facet |
Clines Desiccation resistance Drosophila Intraspecific variation Sexual dimorphism adaptation aridity cline desiccation environmental stress evolutionary biology fly genetic variation genotype-environment interaction intraspecific variation life history trait reproductive strategy sex-related difference sexual dimorphism survival water stress Argentina Arthropoda Drosophila buzzatii |
| description |
Stress resistance characters are valuable tools for the study of acclimation potential, adaptive strategies and biogeographic patterns in species exposed to environmental variability. Water stress is a challenge to terrestrial arthropods because of their small size and relatively high area: volume ratio. Fruit flies have been investigated to record adaptive morphological and physiological traits, as well as to test their responses to stressful factors. In this study, we investigate the ability to cope with water stress, by examining variation in desiccation resistance in a species that lives mainly in desert lands. Specifically, we explored the genetic and ecological basis of desiccation resistance in populations of Drosophila buzzatii from Northern Argentina. We used a common garden experiment with desiccation treatments on a number of isofemale lines from four populations along an aridity gradient. Our results revealed significant among-population differentiation and substantial amounts of genetic variation for desiccation resistance. We also detected significant genotype-by-environment and genotype-by-sex interactions indicative that desiccation resistance responses of the lines assayed were environment- and sex-specific. In addition, we observed clinal variation in female desiccation resistance along gradients of altitude, temperature and humidity; that desiccation resistance is a sexually dimorphic trait, and that sexual dimorphism increased along the aridity and altitudinal gradients. Based on current evidence, we propose that the observed sex-specific responses may reflect different life history traits, and survival and reproductive strategies in different ecological scenarios. © 2012 Springer Science+Business Media Dordrecht. |
| format |
JOUR |
| author |
Sassi, P.L. Hasson, E. |
| author_facet |
Sassi, P.L. Hasson, E. |
| author_sort |
Sassi, P.L. |
| title |
Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress |
| title_short |
Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress |
| title_full |
Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress |
| title_fullStr |
Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress |
| title_full_unstemmed |
Desiccation resistance along an aridity gradient in the cactophilic fly Drosophila buzzatii: Sex-specific responses to stress |
| title_sort |
desiccation resistance along an aridity gradient in the cactophilic fly drosophila buzzatii: sex-specific responses to stress |
| url |
http://hdl.handle.net/20.500.12110/paper_02697653_v27_n3_p505_Sassi |
| work_keys_str_mv |
AT sassipl desiccationresistancealonganariditygradientinthecactophilicflydrosophilabuzzatiisexspecificresponsestostress AT hassone desiccationresistancealonganariditygradientinthecactophilicflydrosophilabuzzatiisexspecificresponsestostress |
| _version_ |
1807320128747995136 |