Heritabilities and genetic correlations of developmental and physiological traits for <i>Drosophila melanogaster</i> flies developed in contrasting ethanol conditions.

<p>Larval development time (LDT), pupal development time (PDT), total development time (TDT), adult body mass (Mb) and routine metabolic rate (RMR) were measured in flies from two Chilean populations (San Fernando and Valdivia) reared in ethanol-free (0% ethanol) and ethanol-supplemented (7% ethanol) conditions. Values between brackets indicate the confidence intervals at 95% for each genetic parameter and those not overlapping zero values are bolded.</p

Reaction norms of body mass and metabolic rate for <i>Drosophila melanogaster</i> flies developed in contrasting ethanol conditions.

<p>Average (± SE) adult body size (A) and routine metabolic rate (RMR; B) for flies (sexes were pooled) from the San Fernando (SF) and the Valdivia (VD) populations reared in ethanol-free (0% ethanol) and ethanol-supplemented (7% ethanol) conditions. Significant effects are expressed as: *<i>P</i><0.05, **<i>P</i><0.01, ***<i>P</i><0.001.</p

Phenotypic and Genetic Effects of Contrasting Ethanol Environments on Physiological and Developmental Traits in <em>Drosophila melanogaster</em>

<div><p>A central problem in evolutionary physiology is to understand the relationship between energy metabolism and fitness-related traits. Most attempts to do so have been based on phenotypic correlations that are not informative for the evolutionary potential of natural populations. Here, we explored the effect of contrasting ethanol environments on physiological and developmental traits, their genetic (co)variances and genetic architecture in <i>Drosophila melanogaster</i>. Phenotypic and genetic parameters were estimated in two populations (San Fernando and Valdivia, Chile), using a half-sib family design where broods were split into ethanol-free and ethanol-supplemented conditions. Our findings show that metabolic rate, body mass and development times were sensitive (i.e., phenotypic plasticity) to ethanol conditions and dependent on population origin. Significant heritabilities were found for all traits, while significant genetic correlations were only found between larval and total development time and between development time and metabolic rate for flies of the San Fernando population developed in ethanol-free conditions. Posterior analyses indicated that the G matrices differed between ethanol conditions for the San Fernando population (mainly explained by differences in genetic (co)variances of developmental traits), whereas the Valdivia population exhibited similar G matrices between ethanol conditions. Our findings suggest that ethanol-free environment increases the energy available to reduce development time. Therefore, our results indicate that environmental ethanol could modify the process of energy allocation, which could have consequences on the evolutionary response of natural populations of <i>D. melanogaster</i>.</p> </div

Reaction norms of development traits for <i>Drosophila melanogaster</i> flies developed in contrasting ethanol conditions.

<p>Average (± SE) larval (A), pupal (B) and total (C) development time for flies (sexes were pooled) from the San Fernando (SF) and the Valdivia (VD) populations reared in ethanol-free (0% ethanol) and ethanol-supplemented (7% ethanol) conditions. Significant effects are expressed as: *<i>P</i><0.05, **<i>P</i><0.01, ***<i>P</i><0.001.</p

Dsubobscura Heat tolerance from Chilean populations

The dataset contains heat tolerance measured in static and dynamic assays

Thermal preference of Drosophila subobscura sampled along a latitudinal gradient in Chile

Thermal preference of Drosophila subobscura sampled along a latitudinal gradient in Chil

Number of eggs laid by native and introduced Drosophila subobscura females during test phases after a learning task

Header consists in : Date (day of start of the experiment), Type ("I" = Introduced, "N" = Native population),Pop (Population of origin),Cond ("B/FQ" : learning phase to avoid strawberry, "BQ/F" : learning phase to avoid banana), Test (Number of test phase), milieu.B (number of eggs laid in banana medium), milieu.F (number of eggs laid in strawberry medium), tot (total number of eggs laid),propB (proportion of eggs laid in the banana medium), propG (proportion of eggs laid in the correct medium), Lat (Latitdue of the populaiton of origin)