Changes in gene frequencies at the octanol dehydrogenase locus of Drosophila melanogaster imposed by environmental ethanol

Genetica ◽  
1988 ◽  
Vol 77 (3) ◽  
pp. 171-177 ◽  
Author(s):  
K. Pecsenye ◽  
G. L�rincz
Keyword(s):  
Drosophila Melanogaster ◽  
Gene Frequencies ◽  
Octanol Dehydrogenase

scholarly journals The use of retrotransposons as markers for mapping genes responsible for fitness differences between related Drosophila melanogaster strains

1993 ◽  
Vol 62 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Sergey V. Nuzhdin ◽  
Peter D. Keightley ◽  
Elena G. Pasyukova
Keyword(s):  
Drosophila Melanogaster ◽  
Molecular Markers ◽  
Maximum Likelihood ◽  
Quantitative Trait ◽  
Pericentromeric Region ◽  
Related Strain ◽  
Gene Frequencies ◽  
Ha Gene ◽  
Insertion Sites ◽  
Additional Locus

SummaryHitch-hiking of dispersed mobile elements serving as molecular markers was used as a new tool for mapping quantitative trait loci in Drosophila melanogaster. Two Drosophila strains with high fitness (HA) were backcrossed repeatedly to a closely related strain with low fitness (LA) to initiate experimental populations with expected HA gene frequencies of 1/32. The frequencies of 19 insertion sites of the retrotransposons mdg1 and copia were analyzed after 11 to 17 generations. Frequencies of sites from the HA line increased substantially in the pericentromeric region, indicating that one or more loci responsible for the fitness difference between the strains were located there. A maximum likelihood (ML) procedure was applied to estimate selection coefficients associated with the markers, and this indicated a broad, strongly selected region of the chromosome. At least one additional locus was localized in the middle of the 2L arm. Possible applications of this method are discussed.

Fitness components at the octanol dehydrogenase locus in Drosophila melanogaster

Genetica ◽  
1989 ◽  
Vol 79 (2) ◽  
pp. 133-138 ◽  
Author(s):  
K. Pecsenye
Keyword(s):  
Drosophila Melanogaster ◽  
Fitness Components ◽  
Octanol Dehydrogenase

scholarly journals Alcohol tolerance and Adh gene frequencies in European and African populations of Drosophila melanogaster

1986 ◽  
Vol 18 (4) ◽  
pp. 405 ◽  
Author(s):  
JR David ◽  
H Merçot ◽  
P Capy ◽  
SF Mcevey ◽  
Jeanine Van Herrewege
Keyword(s):  
Drosophila Melanogaster ◽  
Alcohol Tolerance ◽  
Gene Frequencies ◽  
African Populations ◽  
Adh Gene

Latitudinal variation in octanol dehydrogenase and acid phosphatase allele frequencies in Drosophila melanogaster

1983 ◽  
Vol 65 (3) ◽  
pp. 191-196 ◽  
Author(s):  
J. G. Oakeshott ◽  
J. B. Gibson ◽  
D. A. Willcocks ◽  
G. K. Chambers
Keyword(s):  
Drosophila Melanogaster ◽  
Acid Phosphatase ◽  
Allele Frequencies ◽  
Latitudinal Variation ◽  
Octanol Dehydrogenase

scholarly journals Mutation Rates and Lethal Gene Frequencies in Populations of Drosophila Melanogaster

1953 ◽  
Vol 39 (8) ◽  
pp. 817-823 ◽  
Author(s):  
R. P. Levine ◽  
P. T. Ives
Keyword(s):  
Drosophila Melanogaster ◽  
Mutation Rates ◽  
Lethal Gene ◽  
Gene Frequencies

An Ecological Study of the Alcohol Dehydrogenase (Adh) Polymorphism of Drosophila Melanogaster.

1980 ◽  
Vol 28 (6) ◽  
pp. 709 ◽  
Author(s):  
JA Mckenzie
Keyword(s):  
Drosophila Melanogaster ◽  
Ecological Study ◽  
Natural Populations ◽  
Random Processes ◽  
Enzyme Polymorphism ◽  
Quiescent State ◽  
Ecological Data ◽  
Gene Frequencies ◽  
Similar Gene ◽  
Selective Effects

Fluctuations in the numbers of adults of Drosophila melanogaster Mg. in the cellar of a vineyard in Victoria, Australia, were monitored for 5 years. Numbers fluctuated cyclically, from 50 at the end of winter to 100 000 immediately after harvest. Movement within the cellar system was restricted, especially in winter, leading to subpopulations being formed. Overwintering individuals were in a non-breeding quiescent state. These ecological conditions provide considerable potential for random processes. However, such effects did not seem of importance in the maintenance of the Adh polymorphism since concurrent samples in different areas of the cellar had similar gene frequencies, and similar genotypic distributions were observed from year to year in the cellar system as a whole. The relevance of ecological data in distinguishing between random and selective effects acting on enzyme polymorphism in natural populations is emphasised.

scholarly journals Enzyme Polymorphism and Species Discrimination in Fruit Flies of the Genus Dacus (Tephritidae)

1975 ◽  
Vol 28 (4) ◽  
pp. 405 ◽  
Author(s):  
Stephen W McKechnie
Keyword(s):  
Alcohol Dehydrogenase ◽  
Small Proportion ◽  
Natural Populations ◽  
Enzyme Polymorphism ◽  
Eastern Coast ◽  
Species Discrimination ◽  
Gene Frequencies ◽  
Sympatric Populations ◽  
Hybrid Identification ◽  
Octanol Dehydrogenase

Sympatric populations of D. tryoni and D. neohumeralis are difficult to completely distinguish taxonomically. Using five pigmentation characters, each of some taxonomic value, a small proportion of individuals cannot be assigned to either species nor definitely classified as hybrids. To aid in species discrimination and hybrid identification gene frequencies in natural populations were estimated at three polymorphic protein loci, an alcohol dehydrogenase (Adh), an octanol dehydrogenase (Odh) and an esterase (E-2). Samples of flies were taken from four sites spread over 1200 miles along the Australian eastern coast.

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