scholarly journals Life‐History Consequences of Divergent Selection on Egg Size in Drosophila melanogaster

1999 ◽  
Vol 154 (3) ◽  
pp. 333-340 ◽  
Author(s):  
Lin Schwarzkopf ◽  
Mark W. Blows ◽  
M. Julian Caley
Keyword(s):  
Drosophila Melanogaster ◽  
Life History ◽  
Egg Size ◽  
Divergent Selection

scholarly journals Intergenerational paternal effect of adult density in Drosophila melanogaster

2018 ◽  
Author(s):  
Purbasha Dasgupta ◽  
Saubhik Sarkar ◽  
Akankshya A. Das ◽  
Tanya Verma ◽  
Bodhisatta Nandy
Keyword(s):  
Drosophila Melanogaster ◽  
Treatment Effect ◽  
Egg Size ◽  
Competitive Ability ◽  
Differential Mortality ◽  
Adult Density ◽  
Significant Treatment Effect ◽  
Male Fitness ◽  
Fitness Components ◽  
Significant Treatment

AbstractNotwithstanding recent evidences, paternal environment is thought to be a potential but unlikely source of fitness variation that can affect trait evolution. Here we studied intergenerational effects of males’ exposure to varying adult density in Drosophila melanogaster laboratory populations.We held sires at normal (N), medium (M) and high (H) adult densities for two days before allowing them to mate with virgin females. This treatment did not introduce selection through differential mortality. Further, we randomly paired males and females and allowed a single round of mating between the sires and the dams. We then collected eggs from the dams and measured the egg size. Finally, we investigated the effect of the paternal treatment on juvenile and adult (male) fitness components.We found a significant treatment effect on juvenile competitive ability where the progeny sired by the H-males had higher competitive ability. Since we did not find the treatment to affect egg size, this effect is unlikely to be mediated through variation in female provisioning.Male fitness components were also found to have a significant treatment effect: M-sons had lower dry weight at eclosion, higher mating latency and lower competitive mating success.While being the first study to show both adaptive and non-adaptive effect of the paternal density in Drosophila, our results highlight the importance of considering paternal environment as important source of fitness variation.

GEOGRAPHIC VARIATION IN DIAPAUSE INCIDENCE, LIFE-HISTORY TRAITS, AND CLIMATIC ADAPTATION IN DROSOPHILA MELANOGASTER

Evolution ◽  
2005 ◽  
Vol 59 (8) ◽  
pp. 1721 ◽  
Author(s):  
Paul S. Schmidt ◽  
Luciano Matzkin ◽  
Michael Ippolito ◽  
Walter F. Eanes
Keyword(s):  
Drosophila Melanogaster ◽  
Life History ◽  
Geographic Variation ◽  
Life History Traits ◽  
Climatic Adaptation ◽  
Diapause Incidence

scholarly journals Influence of Lab Adapted Natural Diet and Microbiota on Life History and Metabolic Phenotype of Drosophila melanogaster

2020 ◽  
Vol 8 (12) ◽  
pp. 1972
Author(s):  
Andrei Bombin ◽  
Owen Cunneely ◽  
Kira Eickman ◽  
Sergei Bombin ◽  
Abigail Ruesy ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Life History ◽  
Development Rate ◽  
Metabolic Phenotype ◽  
Natural Diet ◽  
Theory Of Evolution ◽  
Nutritional Conditions ◽  
Novel Approach ◽  
Survival And Development ◽  
Symbiotic Microbiota

Symbiotic microbiota can help its host to overcome nutritional challenges, which is consistent with a holobiont theory of evolution. Our project investigated the effects produced by the microbiota community, acquired from the environment and horizontal transfer, on metabolic traits related to obesity. The study applied a novel approach of raising Drosophila melanogaster, from ten wild-derived genetic lines on naturally fermented peaches, preserving genuine microbial conditions. Larvae raised on the natural and standard lab diets were significantly different in every tested phenotype. Frozen peach food provided nutritional conditions similar to the natural ones and preserved key microbial taxa necessary for survival and development. On the peach diet, the presence of parental microbiota increased the weight and development rate. Larvae raised on each tested diet formed microbial communities distinct from each other. The effect that individual microbial taxa produced on the host varied significantly with changing environmental and genetic conditions, occasionally to the degree of opposite correlations.

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