Interspecific competition between Drosophila melanogaster and Drosophila simulans: Effects of adult density on adult viability

Genetica ◽  
1977 ◽  
Vol 47 (3) ◽  
pp. 203-218 ◽  
Author(s):  
Jeffrey J. Moth ◽  
J. S. F. Barker
Keyword(s):  
Drosophila Melanogaster ◽  
Interspecific Competition ◽  
Drosophila Simulans ◽  
Adult Density

Interspecific competition between Drosophila melanogaster and D. simulans: Effects of adult

1977 ◽  
Vol 25 (4) ◽  
pp. 699 ◽  
Author(s):  
JJ Moth
Keyword(s):  
Drosophila Melanogaster ◽  
Least Squares ◽  
Interspecific Competition ◽  
Adult Density ◽  
Species Frequency ◽  
Tissue Content ◽  
Strain Frequency ◽  
Percentage Data

The hatchability of eggs laid by D. simulans st and D. melanogaster Or-R-C in consecutive 12-hour periods was measured for the first seven days post eclosion in a replicated experiment where adult density at six levels, species frequency at two levels, and 32P tissue content at two levels were varied factorially. A similar experiment was done for D. simulans st and D. melanogaster yw. In both experiments, all unhatched eggs were classified as either dead or infertile. Least-squares analyses of variance on arcsine-transformed percentage data indicated that the three strains produced significantly different proportions of hatched, dead, and infertile eggs. Increased adult density significantly decreased the proportion of hatched eggs (and increased the proportion of dead eggs) for D. simulans st and D. melanogaster Or-R-C, but not for D. melanogaster yw. Effects of strain frequency were not significant for D. simulans st or D. melanogaster Or-R-C, but for D. melanogaster yw higher hatchability and lower proportions of infertile eggs were obtained in pure populations. Hatchability varied between periods; changes in hatchability being random (but significant) for D. melanogaster yw, and consistent (but not significant) for D. simulans st (a decrease in hatchability with time) and D. melanogaster Or-R-C (an increase with time). The competing strain of D. melanogaster did not influence the proportions of hatched, dead or infertile eggs from D. simulans st.

scholarly journals PSEUDOTUMORS AND FITNESS IN DROSOPHILA MELANOGASTER AND DROSOPHILA SIMULANS

Genetics ◽  
1961 ◽  
Vol 46 (8) ◽  
pp. 971-981
Author(s):  
A Di Pasquale ◽  
S Koref-Santibaňez
Keyword(s):  
Drosophila Melanogaster ◽  
Drosophila Simulans

scholarly journals Introgression of Drosophila simulans Nuclear Pore Protein 160 in Drosophila melanogaster Alone Does Not Cause Inviability but Does Cause Female Sterility

Genetics ◽  
2010 ◽  
Vol 186 (2) ◽  
pp. 669-676 ◽  
Author(s):  
Kyoichi Sawamura ◽  
Kazunori Maehara ◽  
Shotaro Mashino ◽  
Tatsuo Kagesawa ◽  
Miyuki Kajiwara ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Drosophila Simulans ◽  
Female Sterility ◽  
Nuclear Pore ◽  
Nuclear Pore Protein ◽  
Pore Protein

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.

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