Mating patterns of different Adh genotypes of Drosophila melanogaster I. Differences in mating ability

Genetica ◽  
1988 ◽  
Vol 78 (3) ◽  
pp. 219-224 ◽  
Author(s):  
J. A. S�nchez Prado ◽  
G. Blanco Lizana
Keyword(s):  
Drosophila Melanogaster ◽  
Mating Ability ◽  
Mating Patterns

scholarly journals The inbreeding decline and average dominance of genes affecting male life-history characters in Drosophila melanogaster

1995 ◽  
Vol 65 (1) ◽  
pp. 41-52 ◽  
Author(s):  
Kimberly A. Hughes
Keyword(s):  
Drosophila Melanogaster ◽  
Life History ◽  
Male Fertility ◽  
Laboratory Population ◽  
Male Mating ◽  
Fitness Components ◽  
Components Of Variance ◽  
Mating Ability ◽  
Deleterious Alleles ◽  
Male Life History

SummaryThis paper describes the results of assays of male life-history characters in a large outbred laboratory population of D. melanogaster. Lines of flies homozygous for the entire third chromosome and lines of flies carrying two different third chromosomes were assayed for agespecific male mating ability (MMA), age-specific survivorship, male fertility, and body mass. The results of these assays were used to calculate the inbreeding decline associated with each of these traits, the average dominance of deleterious alleles that affect the traits, the genotypic and environmental components of variance for the homozygous lines, and phenotypic and genotypic correlations among the characters. Significant inbreeding decline was found for all characters except the Gompertz intercept and fertility. Early and late MMA show larger effects of inbreeding than any other trait. The inbreeding load for MMA is about the same magnitude as that for egg-to-adult viability, but is substantially less than that associated with total fitness. The estimated inbreeding decline and average dominance of male life-history characters are comparable to estimates for other Drosophila fitness components.

scholarly journals Competitive mating in Drosophila melanogaster

1982 ◽  
Vol 40 (2) ◽  
pp. 201-205 ◽  
Author(s):  
Paul M. Sharp
Keyword(s):  
Drosophila Melanogaster ◽  
Test Procedure ◽  
Limited Resource ◽  
Receptive Female ◽  
Male Mating ◽  
Large Reduction ◽  
Mating Ability ◽  
Male Ratio ◽  
The Past

SUMMARYSelective differences among male Drosophila melanogaster due to differences in ability to compete for mates may often have been under-estimated in the past because, under the test procedure used, females did not represent a limited resource. In the experiment reported here, no difference was detected between inbred and outbred males ‘competing’ to mate with an equal number of females. When the receptive female: male ratio was halved a large reduction in male mating ability due to inbreeding became apparent.

scholarly journals THE EFFECT OF INBREEDING ON COMPETITIVE MALE-MATING ABILITY IN DROSOPHILA MELANOGASTER

Genetics ◽  
1984 ◽  
Vol 106 (4) ◽  
pp. 601-612
Author(s):  
Paul M Sharp
Keyword(s):  
Drosophila Melanogaster ◽  
Genetic Variation ◽  
Sexual Selection ◽  
Strong Influence ◽  
Inbred Lines ◽  
Male Mating ◽  
Male Body ◽  
Mating Ability ◽  
Sib Mating ◽  
The Difference

ABSTRACT The effect of full-sib inbreeding on competitive male-mating ability (CI♂) in Drosophila melanogaster was investigated in two experiments. In the first, five inbred lines (with reserves) were assessed up to 18 generations. Linear inbreeding depression, of 5.9% per 10% increase in homozygosity, was observed. In a second experiment, 21 inbred lines were tested after three generations of full-sib mating (without reserves), and the decline with inbreeding was more severe, the male competitive index (CI♂) decreasing by 10.7% per 10% increase in F. The difference between these results is attributed to natural selection acting on variation within the inbred lines in extent of homozygosity, which can arise because of the peculiarly strong influence of linkage in Drosophila. Furthermore, differentiation between the lines may have reflected this variation rather than the various effects of different alleles fixed.—These results imply that the genetic variation in male-mating ability is largely due to dominance (no epistasis was detected) and are consonant with the proposition that intermale sexual selection is a very important component of fitness in D. melanogaster. There was no evidence of a positive correlation between male body size and competitive mating ability.

scholarly journals Behavioural pleiotropy of the yellow gene in Drosophila melanogaster

1976 ◽  
Vol 28 (1) ◽  
pp. 75-88 ◽  
Author(s):  
R. Wilson ◽  
B. Burnet ◽  
L. Eastwood ◽  
K. Connolly
Keyword(s):  
Drosophila Melanogaster ◽  
Locomotor Activity ◽  
Mutant Gene ◽  
Good Evidence ◽  
Locomotor Performance ◽  
Wild Type ◽  
Mating Ability ◽  
Sexual Stimulation ◽  
Wild Type Male ◽  
Reduced Intensity

SUMMARYThe yellow mutant (y − 1:0·0) of Drosophila melanogaster shows a reduction in body pigmentation associated with a decrement in locomotor activity and in male competitive mating ability. The effects of the mutant gene are specific to locomotor activity in the adult fly, measures of larval activity being unaffected. In the presence of active females yellow males offer a reduced intensity of sexual stimulation because they are less able to maintain contact during courtship. However, the impaired locomotor performance of yellow males is not the general cause for their reduced competitive mating ability, since the stimuli provided by yellow mutants courting inactive females appear to be both quantitatively and qualitatively indistinguishable from those of their wild-type male sibs. Nor is there any good evidence, as measured by the frequency of rejection responses, that the courtship stimulation offered by the yellow males is less acceptable to the females. The mutant males are nevertheless unsuccessful in achieving copulation with such females. It is suggested that impairment of mating ability in yellow males may be caused by changes in the efficiency for mating of their secondary sexual structures due to the effect of the yellow gene on the properties of the cuticle.

scholarly journals Male mating success and fertility in Drosophila melanogaster

1985 ◽  
Vol 46 (3) ◽  
pp. 279-285 ◽  
Author(s):  
Linda Partridge ◽  
Trudy F. C. Mackay ◽  
Susan Aitken
Keyword(s):  
Drosophila Melanogaster ◽  
Male Fertility ◽  
Significant Positive Correlation ◽  
Male Mating ◽  
Male Mating Success ◽  
Fitness Components ◽  
Mating Ability ◽  
Dominance Variation ◽  
Positive Correlations ◽  
Outbred Populations

SUMMARYThe male mating ability and male fertility of 40 third chromosome homozygote lines has been measured. There was significant between-line differentiation for both characters, and comparison with a heterozygous stock indicated inbreeding depression and hence dominance variation for them. The characters showed significant positive correlation both with each other and with other fitness components and total fitness, as measured by Mackay (1985). This pattern of large positive correlations between fitness components is not expected to occur in outbred populations.

Author response for "Location and arrangement of campaniform sensilla in Drosophila melanogaster"

2020 ◽  
Author(s):  
Gesa F. Dinges ◽  
Alexander S. Chockley ◽  
Till Bockemühl ◽  
Kei Ito ◽  
Alexander Blanke ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Author Response ◽  
Campaniform Sensilla

Live Confocal Analysis of Fertilization and Early Development

2001 ◽  
Vol 7 (S2) ◽  
pp. 1012-1013
Author(s):  
Uyen Tram ◽  
William Sullivan
Keyword(s):  
Drosophila Melanogaster ◽  
Embryonic Development ◽  
Real Time ◽  
Early Development ◽  
Fluorescent Probes ◽  
Primary Defect ◽  
Fluorescent Analysis ◽  
Dynamic Event ◽  
Enormous Amount ◽  
Fluorescent Studies

Embryonic development is a dynamic event and is best studied in live animals in real time. Much of our knowledge of the early events of embryogenesis, however, comes from immunofluourescent analysis of fixed embryos. While these studies provide an enormous amount of information about the organization of different structures during development, they can give only a static glimpse of a very dynamic event. More recently real-time fluorescent studies of living embryos have become much more routine and have given new insights to how different structures and organelles (chromosomes, centrosomes, cytoskeleton, etc.) are coordinately regulated. This is in large part due to the development of commercially available fluorescent probes, GFP technology, and newly developed sensitive fluorescent microscopes. For example, live confocal fluorescent analysis proved essential in determining the primary defect in mutations that disrupt early nuclear divisions in Drosophila melanogaster. For organisms in which GPF transgenics is not available, fluorescent probes that label DNA, microtubules, and actin are available for microinjection.

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