Opposite environmental and genetic influences on body size in North American Drosophila pseudoobscura

Taylor, Michelle L.; Skeats, Alison; Wilson, Alastair J.; Price, Tom A. R.; Wedell, Nina

doi:10.1186/s12862-015-0323-3

Cited by 11 publications

(8 citation statements)

References 49 publications

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“…The results of their study suggest that the mutations affect the body size of the males and the females reversibly. Patterns of chromosome inversions also favor the body size dimorphism as reported by Taylor et al 80 in Drosophila pseudoobscura. In addition to body size, there is another most important sexual dimorphic character, the sex comb of Drosophila.…”

Section: Genetic Basis For Sexual Dimorphismsupporting

confidence: 57%

The genetics of sexual behavior in Drosophila

Singh¹,

Singh²

2016

AGG

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Genes play a profound role in the regulation of Drosophila behavioral system, either sexual or nonsexual. Those regulating sexual behavior may lead to differences at the level of species, thus causing behavioral isolation. Courtship in Drosophila involves several behavioral repertoires which are controlled genetically. It involves the use of several sensory stimuli that may affect the behavioral responses of both the sexes. These sensory signals are sex specific, and the specificity is due to differential expression of the genes. In addition to the premating behavior, certain candidate genes also affect several postmating responses. Genes also play a magnificent role in the differentiation of two morphologically and behaviorally distinct sexes as well as in their brain structures, which may explain the basis of sexual dimorphism in Drosophila. Also, the advancement in the area of system genetics like the use of mutants and GAL4/ UAS and CRISPR/Cas9 systems provides a much better way to understand the role of genes in controlling several aspects of behavior more closely.

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Section: Genetic Basis For Sexual Dimorphismsupporting

confidence: 57%

The genetics of sexual behavior in Drosophila

Singh¹,

Singh²

2016

AGG

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“…Regarding body size, Conover et al (2009) noted seven examples of countergradient variation and two examples of the cogradient pattern, both directional patterns in Drosophila. Additional information is provided by Taylor et al (2015) in a study designed to examine the covariance pattern between temperature-size rule and Bergmann's rule in another Drosophila species. The authors observed countergradient variation in body size.…”

Section: Discussionmentioning

confidence: 99%

Empirical evidence for fast temperature-dependent body size evolution in rotifers

Walczyńska

Franch‐Gras

2017

Hydrobiologia

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Organisms tend to decrease in size with increasing temperature by phenotypic plasticity (the temperature-size rule; ectotherms) and/or genetically (Bergmann's rule; all organisms). In this study, the evolutionary response of body size to temperature was examined in the cyclically parthenogenetic rotifer Brachionus plicatilis. Our aim was to investigate whether this species, already known to decrease in size with increasing temperature by phenotypic plasticity, presents a similar pattern at the genetic level. We exposed a multiclonal mixture of B. plicatilis to experimental evolution at low and high temperature and monitored body size weekly. Within a month, we observed a smaller size at higher temperature, as compared to body size at lower temperature. The pattern was consistent for the size of both mature females and eggs; rotifers kept at high temperature evolved to be on average 14% (after 2 weeks) and 3% (after 3 weeks) smaller than the ones kept at low temperature (10 and 5% in the case of eggs, respectively). We therefore found that B. plicatilis is genetically programmed to adjust its body size-toenvironmental temperature.

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“…In Drosophila , selection on body size is correlated with temperature (Taylor et al 2015), and survival is affected by climate change (Bozinovic et al 2016). Machado et al (2016) performed a longitudinal study of Drosophila collected at differing latitudes during a two year time span and compared physiological traits of two different species: D. melanogaster and D. simulans .…”

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confidence: 99%

Correlations of Genotype with Climate Parameters Suggest Caenorhabditis elegans Niche Adaptations

Evans

Zhao

Brady

et al. 2017

G3 Genes|Genomes|Genetics

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Species inhabit a variety of environmental niches, and the adaptation to a particular niche is often controlled by genetic factors, including gene-by-environment interactions. The genes that vary in order to regulate the ability to colonize a niche are often difficult to identify, especially in the context of complex ecological systems and in experimentally uncontrolled natural environments. Quantitative genetic approaches provide an opportunity to investigate correlations between genetic factors and environmental parameters that might define a niche. Previously, we have shown how a collection of 208 whole-genome sequenced wild Caenorhabditis elegans can facilitate association mapping approaches. To correlate climate parameters with the variation found in this collection of wild strains, we used geographic data to exhaustively curate daily weather measurements in short-term (3 month), middle-term (one year), and long-term (three year) durations surrounding the date of strain isolation. These climate parameters were used as quantitative traits in association mapping approaches, where we identified 11 quantitative trait loci (QTL) for three climatic variables: elevation, relative humidity, and average temperature. We then narrowed the genomic interval of interest to identify gene candidates with variants potentially underlying phenotypic differences. Additionally, we performed two-strain competition assays at high and low temperatures to validate a QTL that could underlie adaptation to temperature and found suggestive evidence supporting that hypothesis.

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Opposite environmental and genetic influences on body size in North American Drosophila pseudoobscura

Cited by 11 publications

References 49 publications

The genetics of sexual behavior in Drosophila

The genetics of sexual behavior in Drosophila

Empirical evidence for fast temperature-dependent body size evolution in rotifers

Correlations of Genotype with Climate Parameters Suggest Caenorhabditis elegans Niche Adaptations

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