Environmental influence on the genetic correlations between life-history traits in Caenorhabditis elegans

Empirical evidence is mounting to suggesting that genetic correlations between life-history traits are environment specific. However, detailed knowledge about the loci underlying genetic correlations in different environments is scant. Here, we studied the influence of temperature (12°C and 24°C) on...

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Bibliographic Details
Published in:Heredity 2007-04, Vol.98 (4), p.206-213
Main Authors: Gutteling, E W, Doroszuk, A, Riksen, J A G, Prokop, Z, Reszka, J, Kammenga, J E
Format: Article
Language:English
Subjects:
Animal reproduction
Animals
arabidopsis-thaliana
Biomedical and Life Sciences
Biomedicine
Body mass
c-elegans
Caenorhabditis elegans - genetics
Caenorhabditis elegans - growth & development
Chromosome Mapping
Correlation analysis
Cytogenetics
Ecology
egg-size
Environment
Environmental conditions
Evolutionary Biology
Female
Gene loci
Gene mapping
Genetics
Heredity
Homozygote
Human Genetics
Life history
loci
Male
Nematodes
offspring size
original-article
Oviposition
Ovum - cytology
phenotypic plasticity
Plant Genetics and Genomics
pleiotropy
Polymorphism, Single Nucleotide
Quantitative Trait Loci
Recombination, Genetic
seed beetle
Temperature effects
trade-offs
wild-type
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Summary:Empirical evidence is mounting to suggesting that genetic correlations between life-history traits are environment specific. However, detailed knowledge about the loci underlying genetic correlations in different environments is scant. Here, we studied the influence of temperature (12°C and 24°C) on the genetic correlations between egg size, egg number and body mass in the nematode Caenorhabditis elegans . We used a quantitative trait loci (QTL) approach based on a genetic map with evenly spaced single nucleotide polymorphism markers in an N2 × CB4856 recombinant inbred panel. Significant genetic correlations between various traits were found at both temperatures. We detected pleiotropic or closely linked QTL, which supported the negative correlation between egg size and egg number at 12°C, the positive correlation across temperatures for body mass, and the positive correlation between body mass and egg size at 12°C. The results indicate that specific loci control the covariation in these life-history traits and the locus control is prone to environmental conditions.
ISSN:0018-067X
1365-2540
DOI:10.1038/sj.hdy.6800929