Genetic Studies on Sexual Isolation and Hybrid Sterility in Long-Term Cage Populations of Drosophila melanogaster

Evolution ◽  
1982 ◽  
Vol 36 (1) ◽  
pp. 121 ◽  
Author(s):  
G. Kilias ◽  
S. N. Alahiotis
Keyword(s):  
Drosophila Melanogaster ◽  
Hybrid Sterility ◽  
Sexual Isolation ◽  
Genetic Studies

Sexual selection, sexual isolation and pheromones in Drosophila melanogaster strains after long-term maintaining on different diets

2017 ◽  
Vol 140 ◽  
pp. 81-86 ◽  
Author(s):  
Jelena Trajković ◽  
Dragana Miličić ◽  
Tatjana Savić ◽  
Sofija Pavković-Lučić
Keyword(s):  
Drosophila Melanogaster ◽  
Sexual Selection ◽  
Sexual Isolation

scholarly journals Is there ethological isolation among Drosophila melanogaster strains reared for more than 35 generations on different food?

2009 ◽  
Vol 61 (1) ◽  
pp. 105-112 ◽  
Author(s):  
Sofija Pavkovic-Lucic
Keyword(s):  
Drosophila Melanogaster ◽  
Sexual Isolation ◽  
Multiple Choice Tests ◽  
Food Standard ◽  
Choice Tests ◽  
Cornmeal Agar ◽  
Males And Females ◽  
Ethological Isolation ◽  
Term Maintenance

Ethological isolation among three strains of D. melanogaster reared for more than 35 generations on different food (standard cornmeal-agar-yeast medium, banana, and tomato) was tested in a series of multiple choice tests. Long-term maintenance on different substrates did not contribute to sexual isolation among three 'nutritional strains', as degrees of ethological isolation (Malogolowkin-Cohen's isolation indices) were not statistically significant. Males and females reared on different nutritional resources were equally successful in matings, i.e., significant differences in the number of copulations achieved by males and females from various lines were not observed.

scholarly journals The Rate of Mutation and the Homozygous and Heterozygous Mutational Effects for Competitive Viability: A Long-Term Experiment With Drosophila melanogaster

Genetics ◽  
2001 ◽  
Vol 158 (2) ◽  
pp. 681-693 ◽  
Author(s):  
David Chavarrías ◽  
Carlos López-Fanjul ◽  
Aurora García-Dorado
Keyword(s):  
Drosophila Melanogaster ◽  
Minimum Distance ◽  
Deleterious Mutations ◽  
Regression Estimate ◽  
Term Experiment ◽  
Degree Of Dominance ◽  
Long Term Experiment ◽  
Rate Of Decline ◽  
Good Agreement

Abstract The effect of 250 generations of mutation accumulation (MA) on the second chromosome competitive viability of Drosophila melanogaster was analyzed both in homozygous and heterozygous conditions. We used full-sib MA lines, where selection hampers the accumulation of severely deleterious mutations but is ineffective against mildly deleterious ones. A large control population was simultaneously evaluated. Competitive viability scores, unaffected by the expression of mutations in heterozygosis, were obtained relative to a Cy/L2 genotype. The rate of decline in mean ΔM ≈ 0.1% was small. However, that of increase in variance ΔV ≈ 0.08 × 10-3 was similar to the values obtained in previous experiments when severely deleterious mutations were excluded. The corresponding estimates of the mutation rate λ ≥ 0.01 and the average effect of mutations E(s) ≤ 0.08 are in good agreement with Bateman-Mukai and minimum distance estimates for noncompetitive viability obtained from the same MA lines after 105 generations. Thus, competitive and noncompetitive viability show similar mutational properties. The regression estimate of the degree of dominance for mild-to-moderate deleterious mutations was ∼0.3, suggesting that the pertinent value for new unselected mutations should be somewhat smaller.

Developmental and Genetic Studies of the Indirect Flight Muscles of Drosophila Melanogaster

1980 ◽  
pp. 183-192 ◽  
Author(s):  
I. I. Deak ◽  
A. Rähmi ◽  
P. R. Bellamy ◽  
M. Bienz ◽  
A. Blumer ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Studies ◽  
Flight Muscles

Testing the “rate of living” model: further evidence that longevity and metabolic rate are not inversely correlated in Drosophila melanogaster

2004 ◽  
Vol 97 (5) ◽  
pp. 1915-1922 ◽  
Author(s):  
Wayne A. Van Voorhies ◽  
Aziz A. Khazaeli ◽  
James W. Curtsinger
Keyword(s):  
Drosophila Melanogaster ◽  
Metabolic Rate ◽  
Recombinant Inbred ◽  
Recombinant Inbred Lines ◽  
Time Of Day ◽  
Metabolic Rates ◽  
Extended Longevity ◽  
Flow Through ◽  
The Relationship

In a recent study examining the relationship between longevity and metabolism in a large number of recombinant inbred Drosophila melanogaster lines, we found no indication of the inverse relationship between longevity and metabolic rate that one would expect under the classical “rate of living” model. A potential limitation in generalizing from that study is that it was conducted on experimental material derived from a single set of parental strains originally developed over 20 years ago. To determine whether the observations made with those lines are characteristic of the species, we studied metabolic rates and longevities in a second, independently derived set of recombinant inbred lines. We found no correlation in these lines between metabolic rate and longevity, indicating that the ability to both maintain a normal metabolic rate and have extended longevity may apply to D. melanogaster in general. To determine how closely our measurements reflect metabolic rates of flies maintained under conditions of life span assays, we used long-term, flow-through metabolic rate measurements and closed system respirometry to examine the effects of variables such as time of day, feeding state, fly density, mobility of the flies, and nitrogen knockout on D. melanogaster metabolic rate. We found that CO2 production estimated in individual flies accurately reflects metabolic rates of flies under the conditions used for longevity assays.

scholarly journals Genetic Studies of Spectrin in the Larval Fat Body of Drosophila melanogaster: Evidence for a Novel Lipid Uptake Apparatus

Genetics ◽  
2013 ◽  
Vol 195 (3) ◽  
pp. 871-881 ◽  
Author(s):  
Bianca Diaconeasa ◽  
G. Harper Mazock ◽  
Anthony P. Mahowald ◽  
Ronald R. Dubreuil
Keyword(s):  
Drosophila Melanogaster ◽  
Fat Body ◽  
Lipid Uptake ◽  
Genetic Studies
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