DOI: 10.5061/dryad.st57b
title: Data from: Rapid evolutionary responses of life history traits to different experimentally-induced pollution in Caenorhabditis elegans

description: Background Anthropogenic disturbances can lead to intense selection
 pressures on traits and very rapid evolutionary changes. Evolutionary
 responses to environmental changes, in turn, reflect changes in the
 genetic structure of the traits, accompanied by a reduction of
 evolutionary potential of the populations under selection. Assessing the
 effects of pollutants on the evolutionary responses and on the genetic
 structure of populations is thus important to understanding the mechanisms
 that entail specialization to novel environmental conditions or resistance
 to novel stressors. Results Using an experimental evolution approach we
 exposed Caenorhabditis elegans populations to uranium, salt and
 alternating uranium-salt environments over 22 generations. We analyzed the
 changes in the average values of life history traits and the consequences
 at the demographic level in these populations. We also estimated the
 phenotypic and genetic (co)variance structure of these traits at different
 generations. Compared to populations in salt, populations in uranium
 showed a reduction of the stability of their traits structure and a higher
 capacity to respond by acclimation. However, the evolutionary responses of
 traits were generally lower for uranium than salt and the evolutionary
 responses in the alternating uranium-salt environment were between those
 of constant environments. Consequently, at the end of the experiment, the
 population rate of increase were higher in uranium than in salt and
 intermediate in the alternating environment. Conclusions Our
 multigenerational experiment confirmed that rapid adaptation to different
 polluted environments may involve different evolutionary responses
 resulting demographic consequences. These changes are partly explain by
 the effects of the pollutants on the genetic (co)variance structure of
 traits and the capacity of acclimation to novel conditions. Finally, our
 results in the alternating environment may confirm the selection of a
 generalist type in this environment.
description: multiG1M. DUTILLEUL, J.M. BONZOM, C. LECOMTE, B. GOUSSEN, F. DAIAN, S. GALAS, D. REALE 2014 Rapid evolutionary responses of life history traits to different experimentally-induced pollution in Caenorhabditis elegans BMC Evolutionary Biology ================================= File name: multiG1.csv File description: measures of life history traits of Caenorhabditis elegans in different environments during a multi-generationnal experiment. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Definition of column headings: generation: generation in which the individual* was measured (1 to 22)* environment: environment where the individual* lived (control, salt, uranium, alternating) replicate: population from where the individual* was sampled (A to X)* fertility_B96: number of larvae produced by the hermaphrodite before 96h of life fertility_A96: number of larvae produced by the hermaphrodite after 96h of life fertility_tot: number of larvae produced by the hermaphrodite in its all life length_H: body length of the hermaphrodite (in mm) bend_M: number of body bend of the male in 20 seconds length_M: body length of the male (in mm). Missing data are indicated with NA *Although the data are on the same line to shorten the table, the hermaphrodite and the male measured at each line came from a same replicate but were obviously different individuals =============================== Contact information: morgan.dutilleul@hotmail.frmultiG2M. DUTILLEUL, J.M. BONZOM, C. LECOMTE, B. GOUSSEN, F. DAIAN, S. GALAS, D. REALE 2014 Rapid evolutionary responses of life history traits to different experimentally-induced pollution in Caenorhabditis elegans BMC Evolutionary Biology =============================== File name: multiG2.csv File description: measures of survival, sex ratio and population size of Caenorhabditis elegans populations in different environments during a multi-generationnal experiment. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Definition of column headings: generation: generation in which population was measured (1 to 22) environment: environment where the population lived (control, salt, uranium, alternating) replicate: denomination of the replicate population through the generations (A to X) survival: percentage of survival in the replicate population (%) ratio_M: percentage of male in the replicate population (%) pop_size: number of individuals in the replicate population Missing data are indicated with NA ================================ Contact information: morgan.dutilleul@hotmail.fr