Trait variability and stress: canalization, developmental stability and the need for a broad approach

Hoffmann, Ary A.; Woods,

doi:10.1046/j.1461-0248.2001.00205.x

Cited by 52 publications

(57 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relationship between DI and canalization is controversial similar to the relationship between DI and heterozygosity. Hoffmann and Woods (2001) found no general relationship between DI and canalization in a small review of the data available at the time. A later study, however, showed that such a relationship may be present for wing shape, as a significant correlation between DI and canalization was found for this trait, but not for wing size (Breuker et al 2006).…”

Section: Introductionmentioning

confidence: 94%

“…While phenotypic plasticity refers to the ability of a genotype to produce different phenotypes in different environments, canalization refers to the ability of different genotypes to produce the same phenotype in a given environment (Hoffmann and Woods 2001). The relationship between DI and canalization is controversial similar to the relationship between DI and heterozygosity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Consequences of outbreeding on phenotypic plasticity in Drosophila mercatorum wings

et al. 2007

View full text Add to dashboard Cite

A multivariate morphometric investigation was conducted on wings of two parthenogenetic Drosophila mercatorum strains and offspring (F1) of crosses between these parthenogenetic strains with highly inbred sexual individuals of the same species. The parental flies and F1 offspring were reared at three different temperatures: 20, 25, or 28°C. This design allows a comparison of completely homozygous individuals (parental generation) with identical heterozygote offspring (F1), which makes an analysis of phenotypic plasticity of morphometric traits possible, without a potentially confounding effect of genotype-environment interactions, which can increase the phenotypic variability. The same pattern of phenotypic plasticity of wing size between the homozygous parental strains and the heterozygous offspring was found in both strains with an apparent heterotic effect for wing size in the F1 at 25°C. At 20 and 28°C flies from the parental generation had the biggest wings. Phenotypic plasticity of shape was found to be strain dependent. A reduced level of developmental instability (DI) was found in the F1 as compared to the parental strain only in strain 1 reared at 20°C for the wing size and 25°C for the wing shape. For all the other treatments higher DI was found in the F1 when the difference was significant, which is suggestive of outbreeding depression. These findings are difficult to interpret since an apparent heterotic effect of size at 25°C is accompanied by higher DI (though not significant in strain 2) and complex changes in wing shape. Hence, we cannot conclude whether outbreeding lowers or increases the capacity to respond to environmental change via plastic responses and via changes of the level of DI. The degree of change of Kristian Krag and Hans Thomsen have contributed equally. phenotypic plasticity and DI is trait specific, depending on the environment and on the genotypes which are hybridizing.

show abstract

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Consequences of outbreeding on phenotypic plasticity in Drosophila mercatorum wings

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The question of whether canalization ( 2 p) and DI (FA) are affected by different mechanisms has been doubted by several authors (Dworkin 2005;Willmore et al 2006), and supported by others (Hoffmann and Woods 2001;Rego et al 2006). However, no clear conclusion has been reached and the underlying genetic mechanisms of 2 p and FA have yet to be evaluated.…”

Section: Introductionmentioning

confidence: 99%

A Study of Canalization and Developmental Stability in the Sternopleural Bristle System of Drosophila Melanogaster

Dworkin

2005

Evolution

View full text Add to dashboard Cite

Among the explanations for minimizing the effects of extraneous variation has been canalization and developmental stability. However, there is little agreement as to whether these two processes reflect a common set of mechanisms. This confusion is inflated due to the lack of consensus as to a precise definition of canalization. In this study, canalization in the sternopleural bristle system is used to investigate the relationships between measures of canalization and developmental stability by compring how a panel of naturally derived lines responds to both genetic and environmental perturbations. No evidence for a common mechanism between the different measures of canalization was observed. Furthermore, a hypothesis regarding a common mechanism for environmental and genetic canalization was tested, and no evidence was found to support it. However, there is evidence for a relationship between at least one form of canalization and development stability.

show abstract

“…other insects), social insect sexuals from more stressful colonies would be predicted to show a smaller and more variable size (lower mean and higher coefficient of variation) (cf. for example, Imasheva et al 1997;Clarke 1998;Hoffmann and Schiffer 1998;Woods et al 1999; see also Hoffmann and Woods 2001). Also, the levels of fluctuating asymmetry (FA) (the random deviation in size of left and right sides of a bilateral trait), which is widely used as an estimator of developmental stability in the face of environmental stress (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Hoffmann and Woods 2001;Hogg et al 2001; see also Polak et al 2002). However, I incorporated FA analyses in my study to make it as inclusive as possible.…”

Section: Introductionmentioning

confidence: 99%

Multiple paternity and colony homeostasis in Lasius niger ants

Fjerdingstad

2004

Behavioral Ecology and Sociobiology

View full text Add to dashboard Cite

Multiple mating by social insect queens is a common phenomenon despite likely imposing substantial costs on queens. Mating with several males could be adaptive if a more genetically diverse worker force is better able to always handle any task sufficiently well, leading to a higher colony homeostasis. If multiplepaternity colonies are more homeostatic, then I propose that they may constitute less stressful rearing environments for developing sexuals. The effective stress levels experienced by developing males and queens may, however, also depend on colony productivity and sexratio preferences. I tested these hypotheses in the ant Lasius niger by examining whether the fluctuating asymmetry, means and coefficients of variation of a set of phenotypic traits in males and new queens co-varied with the effective number of patrilines per colony, colony productivity or sex ratio. Little support was found that the level of intra-colonial genetic diversity affects the variation of phenotype in sexuals. In 1 out of 2 years, however, females from colonies with high effective patriline numbers were heavier relative to their head width than were females from colonies with few patrilines. Support was found for the hypothesis that colonies with more resources may invest more in individual sexuals, and tendencies suggested that sexuals may receive better treatment when they belong to the majority sex of their colony.

show abstract

Trait variability and stress: canalization, developmental stability and the need for a broad approach

Cited by 52 publications

References 21 publications

Consequences of outbreeding on phenotypic plasticity in Drosophila mercatorum wings

Consequences of outbreeding on phenotypic plasticity in Drosophila mercatorum wings

A Study of Canalization and Developmental Stability in the Sternopleural Bristle System of Drosophila Melanogaster

Multiple paternity and colony homeostasis in Lasius niger ants

Contact Info

Product

Resources

About