Environmental effects on the detection of adaptation

Detecting adaptation involves comparing the performance of populations evolving in different environments. This detection may be confounded by effects due to the environment experienced by organisms prior to the test. We tested whether such confounding effects occur, using spider‐mite selection line...

Full description

Saved in:
Bibliographic Details
Published inJournal of evolutionary biology Vol. 24; no. 12; pp. 2653 - 2662
Main Authors MAGALHÃES, S., BLANCHET, E., EGAS, M., OLIVIERI, I.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.12.2011
Subjects
Adaptation
Adaptation, Physiological
Animals
Capsicum - parasitology
cost of adaptation
Cucumis sativus - parasitology
Environment
Environmental conditions
environmental maternal effects
Evolutionary biology
experimental evolution
Female
Host Specificity
Insects
Life Cycle Stages
Longevity
Lycopersicon esculentum - parasitology
Oviposition
Phenotype
phenotypic plasticity
Plant Diseases - parasitology
specialization
Survival Analysis
Tetranychidae - growth & development
Tetranychidae - physiology
Time Factors
Online AccessGet full text

Cover

More Information
Summary:Detecting adaptation involves comparing the performance of populations evolving in different environments. This detection may be confounded by effects due to the environment experienced by organisms prior to the test. We tested whether such confounding effects occur, using spider‐mite selection lines on two novel hosts and one ancestral host, after 15 generations of selection. Mites were either sampled directly from the selection lines or subjected to a common juvenile or to a common maternal environment, mimicking the most frequent environmental manipulations. These environments strongly affected all life‐history traits. Moreover, the detection of adaptation and correlated responses on the ancestral host was inconsistent among environments in almost 20% of the cases. Indeed, we did not detect responses unambiguously for any life‐history trait. This inconsistency was due to differential environmental effects on lines from different selection regimes. Therefore, the detection of adaptation requires a careful control of these environmental effects.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:1010-061X
1420-9101
DOI:10.1111/j.1420-9101.2011.02388.x