Starvation resistance in Drosophila melanogaster: testing for a possible 'cannibalism' bias

2004 ◽  
Vol 18 (6) ◽  
pp. 952-954 ◽  
Author(s):  
R. B. HUEY ◽  
J. SUESS ◽  
H. HAMILTON ◽  
G. W. GILCHRIST
Keyword(s):  
Drosophila Melanogaster ◽  
Starvation Resistance

Complex Trade-Offs and the Evolution of Starvation Resistance in Drosophila melanogaster

Evolution ◽  
1996 ◽  
Vol 50 (2) ◽  
pp. 753 ◽  
Author(s):  
Adam K. Chippindale ◽  
Terence J. F. Chu ◽  
Michael R. Rose
Keyword(s):  
Drosophila Melanogaster ◽  
Starvation Resistance ◽  
Trade Offs

scholarly journals A quantitative genetic study of starvation resistance at different geographic scales in natural populations of Drosophila melanogaster

2010 ◽  
Vol 92 (4) ◽  
pp. 253-259 ◽  
Author(s):  
JULIETA GOENAGA ◽  
JUAN JOSÉ FANARA ◽  
ESTEBAN HASSON
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Correlations ◽  
Natural Populations ◽  
Food Shortage ◽  
Population Variation ◽  
Phenotypic Variance ◽  
Starvation Resistance ◽  
Natural Genetic Variation ◽  
Quantitative Genetic ◽  
Variation Explained

SummaryFood shortage is a stress factor that commonly affects organisms in nature. Resistance to food shortage or starvation resistance (SR) is a complex quantitative trait with direct implications on fitness. However, surveys of natural genetic variation in SR at different geographic scales are scarce. Here, we have measured variation in SR in sets of lines derived from nine natural populations of Drosophila melanogaster collected in western Argentina. Our study shows that within population variation explained a larger proportion of overall phenotypic variance (80%) than among populations (7·2%). We also noticed that an important fraction of variation was sex-specific. Overall females were more resistant to starvation than males; however, the magnitude of the sexual dimorphism (SD) in SR varied among lines and explained a significant fraction of phenotypic variance in all populations. Estimates of cross-sex genetic correlations suggest that the genetic architecture of SR is only partially shared between sexes in the populations examined, thus, facilitating further evolution of the SD.

scholarly journals Phenotypic coupling of sleep and starvation resistance evolves in D. melanogaster

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Didem P. Sarikaya ◽  
Julie Cridland ◽  
Adam Tarakji ◽  
Hayley Sheehy ◽  
Sophia Davis ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Population Level ◽  
Adaptive Mechanism ◽  
Starvation Resistance ◽  
Plastic Response ◽  
Metabolic Phenotypes ◽  
Percent Change ◽  
Carbohydrate Levels ◽  
Complex Relationships ◽  
Function Of Sleep

Abstract Background One hypothesis for the function of sleep is that it serves as a mechanism to conserve energy. Recent studies have suggested that increased sleep can be an adaptive mechanism to improve survival under food deprivation in Drosophila melanogaster. To test the generality of this hypothesis, we compared sleep and its plastic response to starvation in a temperate and tropical population of Drosophila melanogaster. Results We found that flies from the temperate population were more starvation resistant, and hypothesized that they would engage in behaviors that are considered to conserve energy, including increased sleep and reduced movement. Surprisingly, temperate flies slept less and moved more when they were awake compared to tropical flies, both under fed and starved conditions, therefore sleep did not correlate with population-level differences in starvation resistance. In contrast, total sleep and percent change in sleep when starved were strongly positively correlated with starvation resistance within the tropical population, but not within the temperate population. Thus, we observe unexpectedly complex relationships between starvation and sleep that vary both within and across populations. These observations falsify the simple hypothesis of a straightforward relationship between sleep and energy conservation. We also tested the hypothesis that starvation is correlated with metabolic phenotypes by investigating stored lipid and carbohydrate levels, and found that stored metabolites partially contributed towards variation starvation resistance. Conclusions Our findings demonstrate that the function of sleep under starvation can rapidly evolve on short timescales and raise new questions about the physiological correlates of sleep and the extent to which variation in sleep is shaped by natural selection.

Analysis of the effects of inbreeding on lifespan and starvation resistance in Drosophila melanogaster

Genetica ◽  
2011 ◽  
Vol 139 (4) ◽  
pp. 525-533 ◽  
Author(s):  
Terhi M. Valtonen ◽  
Derek A. Roff ◽  
Markus J. Rantala
Keyword(s):  
Drosophila Melanogaster ◽  
Starvation Resistance

scholarly journals Altered regulation of sleep and feeding contributes to starvation resistance in Drosophila melanogaster

2014 ◽  
Vol 217 (17) ◽  
pp. 3122-3132 ◽  
Author(s):  
P. Masek ◽  
L. A. Reynolds ◽  
W. L. Bollinger ◽  
C. Moody ◽  
A. Mehta ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Starvation Resistance ◽  
Altered Regulation
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