Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster

Characterizing the relationships between genotype and phenotype for developmental adaptive traits is essential to understand the evolutionary dynamics underlying biodiversity. In holometabolous insects, the time to reach the reproductive stage and pupation site preference are two such traits. Here w...

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Detalles Bibliográficos
Publicado: 2018
Materias:
Developmental time
Genetic variation
Ontogenetic decoupling
Phenotypic plasticity
Pupation height
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00713260_v45_n4_p437_PetinoZappala
http://hdl.handle.net/20.500.12110/paper_00713260_v45_n4_p437_PetinoZappala
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00713260_v45_n4_p437_PetinoZappala
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spelling paper:paper_00713260_v45_n4_p437_PetinoZappala2023-06-08T15:06:23Z Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster Developmental time Genetic variation Ontogenetic decoupling Phenotypic plasticity Pupation height Characterizing the relationships between genotype and phenotype for developmental adaptive traits is essential to understand the evolutionary dynamics underlying biodiversity. In holometabolous insects, the time to reach the reproductive stage and pupation site preference are two such traits. Here we characterize aspects of the genetic architecture for Developmental Time (decomposed in Larval and Pupal components) and Pupation Height using lines derived from three natural populations of Drosophila melanogaster raised at two temperatures. For all traits, phenotypic differences and variation in plasticity between populations suggest adaptation to the original thermal regimes. However, high variability within populations shows that selection does not exhaust genetic variance for these traits. This could be partly explained by local adaptation, environmental heterogeneity and modifications in the genetic architecture of traits according to environment and ontogenetic stage. Indeed, our results show that the genetic factors affecting Developmental Time and Pupation Height are temperature-specific. Varying relationships between Larval and Pupal Developmental Time between and within populations also suggest stage-specific modifications of genetic architecture for this trait. This flexibility would allow for a somewhat independent evolution of adaptive traits at different environments and life stages, favoring the maintenance of genetic variability and thus sustaining the traits’ evolvabilities. © 2018, Springer Science+Business Media, LLC, part of Springer Nature. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00713260_v45_n4_p437_PetinoZappala http://hdl.handle.net/20.500.12110/paper_00713260_v45_n4_p437_PetinoZappala
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Developmental time
Genetic variation
Ontogenetic decoupling
Phenotypic plasticity
Pupation height
spellingShingle Developmental time
Genetic variation
Ontogenetic decoupling
Phenotypic plasticity
Pupation height
Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster
topic_facet Developmental time
Genetic variation
Ontogenetic decoupling
Phenotypic plasticity
Pupation height
description Characterizing the relationships between genotype and phenotype for developmental adaptive traits is essential to understand the evolutionary dynamics underlying biodiversity. In holometabolous insects, the time to reach the reproductive stage and pupation site preference are two such traits. Here we characterize aspects of the genetic architecture for Developmental Time (decomposed in Larval and Pupal components) and Pupation Height using lines derived from three natural populations of Drosophila melanogaster raised at two temperatures. For all traits, phenotypic differences and variation in plasticity between populations suggest adaptation to the original thermal regimes. However, high variability within populations shows that selection does not exhaust genetic variance for these traits. This could be partly explained by local adaptation, environmental heterogeneity and modifications in the genetic architecture of traits according to environment and ontogenetic stage. Indeed, our results show that the genetic factors affecting Developmental Time and Pupation Height are temperature-specific. Varying relationships between Larval and Pupal Developmental Time between and within populations also suggest stage-specific modifications of genetic architecture for this trait. This flexibility would allow for a somewhat independent evolution of adaptive traits at different environments and life stages, favoring the maintenance of genetic variability and thus sustaining the traits’ evolvabilities. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
title Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster
title_short Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster
title_full Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster
title_fullStr Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster
title_full_unstemmed Study of Natural Genetic Variation in Early Fitness Traits Reveals Decoupling Between Larval and Pupal Developmental Time in Drosophila melanogaster
title_sort study of natural genetic variation in early fitness traits reveals decoupling between larval and pupal developmental time in drosophila melanogaster
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00713260_v45_n4_p437_PetinoZappala
http://hdl.handle.net/20.500.12110/paper_00713260_v45_n4_p437_PetinoZappala
_version_ 1768544544260882432

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