Lack of response to artificial selection on developmental stability of partial wing shape components in Drosophila melanogaster

Tsujino, Masahiro; Takahashi, Kazuo H.

doi:10.1007/s10709-014-9765-6

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…This agrees with findings from traditional measurements [388]. Also, experiments in Drosophila using artificial selection for higher or lower fluctuating asymmetry for indices computed from wing measurements found low estimates of heritability that were significant in one experiment [390] but not in another [391]. Results from statistical models suggest that these findings are in line with theoretical expectations and that it is very challenging to estimate the heritability of the developmental instability that underlies the observed fluctuating asymmetry with the sizes of experiments that are normally used [389].…”

Section: Inheritance Of Fluctuating Asymmetrysupporting

confidence: 87%

Analyzing Fluctuating Asymmetry with Geometric Morphometrics: Concepts, Methods, and Applications

2015

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Approximately two decades after the first pioneering analyses, the study of shape asymmetry with the methods of geometric morphometrics has matured and is a burgeoning field. New technology for data collection and new methods and software for analysis are widely available and have led to numerous applications in plants and animals, including humans. This review summarizes the concepts and morphometric methods for studying asymmetry of shape and size. After a summary of mathematical and biological concepts of symmetry and asymmetry, a section follows that explains the methods of geometric morphometrics and how they can be used to analyze asymmetry of biological structures. Geometric morphometric analyses not only tell how much asymmetry there is, but also provide information about the patterns of covariation in the structure under study. Such patterns of covariation in fluctuating asymmetry can provide valuable insight about the developmental basis of morphological integration, and have become important tools for evolutionary developmental biology. The genetic basis of fluctuating asymmetry has been studied from empirical and theoretical viewpoints, but serious challenges remain in this area. There are many promising areas for further research that are only little explored at present.

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Section: Inheritance Of Fluctuating Asymmetrysupporting

confidence: 87%

Analyzing Fluctuating Asymmetry with Geometric Morphometrics: Concepts, Methods, and Applications

2015

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“…Comparable to our heritability estimates of total micro-environmental variance, the heritability of fluctuating asymmetry was ,1%. Similarly, in a ferent experiment the lack of selection response of fluctuating asymmetry after 10-14 generations of artificial selection also suggests that heritability is low (Tsujino and Takahashi 2014). Inconsistent selection responses for traits associated with very low additive genetic variance suggests that rare alleles contribute the variance, and consequently the random sampling of rare alleles in small populations could explain the lack of evolutionary response (Hine et al 2014).…”

Section: Figurementioning

confidence: 94%

Heritable Micro-environmental Variance Covaries with Fitness in an Outbred Population of Drosophila serrata

2017

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The genetic basis of stochastic variation within a defined environment, and the consequences of such micro-environmental variance for fitness are poorly understood . Using a multigenerational breeding design in , we demonstrated that the micro-environmental variance in a set of morphological wing traits in a randomly mating population had significant additive genetic variance in most single wing traits. Although heritability was generally low (<1%), coefficients of additive genetic variance were of a magnitude typical of other morphological traits, indicating that the micro-environmental variance is an evolvable trait. Multivariate analyses demonstrated that the micro-environmental variance in wings was genetically correlated among single traits, indicating that common mechanisms of environmental buffering exist for this functionally related set of traits. In addition, through the dominance genetic covariance between the major axes of micro-environmental variance and fitness, we demonstrated that micro-environmental variance shares a genetic basis with fitness, and that the pattern of selection is suggestive of variance-reducing selection acting on micro-environmental variance.

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Little effect of HSP90 inhibition on the quantitative wing traits variation in Drosophila melanogaster

Takahashi

2016

Genetica

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Drosophila wings have been a model system to study the effect of HSP90 on quantitative trait variation. The effect of HSP90 inhibition on environmental buffering of wing morphology varies among studies while the genetic buffering effect of it was examined in only one study and was not detected. Variable results so far might show that the genetic background influences the environmental and genetic buffering effect of HSP90. In the previous studies, the number of the genetic backgrounds used is limited. To examine the effect of HSP90 inhibition with a larger number of genetic backgrounds than the previous studies, 20 wild-type strains of Drosophila melanogaster were used in this study. Here I investigated the effect of HSP90 inhibition on the environmental buffering of wing shape and size by assessing within-individual and among-individual variations, and as a result, I found little or very weak effects on environmental and genetic buffering. The current results suggest that the role of HSP90 as a global regulator of environmental and genetic buffering is limited at least in quantitative traits.

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Lack of response to artificial selection on developmental stability of partial wing shape components in Drosophila melanogaster

Cited by 3 publications

References 29 publications

Analyzing Fluctuating Asymmetry with Geometric Morphometrics: Concepts, Methods, and Applications

Analyzing Fluctuating Asymmetry with Geometric Morphometrics: Concepts, Methods, and Applications

Heritable Micro-environmental Variance Covaries with Fitness in an Outbred Population of Drosophila serrata

Little effect of HSP90 inhibition on the quantitative wing traits variation in Drosophila melanogaster

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