info:eu-repo/semantics/article
Stage- and thermal-specific genetic architecture for preadult viability in natural populations of Drosophila melanogaster
Fecha
2019-07Registro en:
Petino Zappala, María Alejandra; Satorre, Ignacio Guido; Fanara, Juan Jose; Stage- and thermal-specific genetic architecture for preadult viability in natural populations of Drosophila melanogaster; Wiley Blackwell Publishing, Inc; Journal of Evolutionary Biology; 32; 7; 7-2019; 683-693
1010-061X
CONICET Digital
CONICET
Autor
Petino Zappala, María Alejandra
Satorre, Ignacio Guido
Fanara, Juan Jose
Resumen
Studying the processes affecting variation for preadult viability is essential to understand the evolutionary trajectories followed by natural populations. This task requires focusing on the complex nature of the phenotype–genotype relationship by taking into account usually neglected aspects of the phenotype and recognizing the modularity between different ontogenetic stages. Here, we describe phenotypic variability for viability during the larval and pupal stages in lines derived from three natural populations of Drosophila melanogaster, as well as the variability for phenotypic plasticity and canalization at two different rearing temperatures. The results indicate that the three populations present significant phenotypic differences for preadult viability. Furthermore, distinct aspects of the phenotype (means, plasticity, canalization, plasticity of canalization) are affected by different genetic bases underlying changes in viability in a stage- and environment-specific manner. These findings explain the generalized maintenance of genetic variability for this fitness trait.