Interspecific Competition Between Drosophila Melanogaster and Drosophila Simulans: Effects of Larval Density on Viability, Developmental Period and Adult Body Weight

ABSTRACT The effects of larval density on components of fertility fitness were investigated with two mutant lines of Drosophila melanogaster. The differences in adult body weight, wing length, larval survivorship and development time verified that flies reared at high density were resource limited. Experimental results indicate that: (1) relative fecundities of both sexes show density-dependent effects, (2) there is a strong density effect on male and female mating success, and (3) in general, there is a reduction in fecundity differences between genotypes at high density. These results imply that it may be important to consider fertility in models of density-dependent natural selection.

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Interspecific Competition Between Drosophila Melanogaster and Drosophila Simulans. Effects of Larval Density and Short-Term Adult Starvation on Fecundity, Egg Hatchability and Adult Viability

Ecology ◽

10.2307/1933978 ◽

1970 ◽

Vol 51 (5) ◽

pp. 855-864 ◽

Cited By ~ 17

Author(s):

J. S. F. Barker ◽

R. N. Podger

Keyword(s):

Drosophila Melanogaster ◽

Interspecific Competition ◽

Larval Density ◽

Drosophila Simulans ◽

Short Term ◽

Egg Hatchability

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Faculty Opinions recommendation of Adult body weight is programmed by a redox-regulated and energy-dependent process during the pronuclear stage in mouse.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.13489060.14866185 ◽

2012 ◽

Author(s):

Keith Jones

Keyword(s):

Body Weight ◽

Dependent Process ◽

Adult Body ◽

Adult Body Weight ◽

Energy Dependent

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

Genetica ◽

10.1007/bf00123242 ◽

1977 ◽

Vol 47 (3) ◽

pp. 203-218 ◽

Cited By ~ 6

Author(s):

Jeffrey J. Moth ◽

J. S. F. Barker

Keyword(s):

Drosophila Melanogaster ◽

Interspecific Competition ◽

Drosophila Simulans ◽

Adult Density

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Oral Character and Attitudes and Behavior Related to Food and Eating

Psychological Reports ◽

10.2466/pr0.1988.63.1.15 ◽

1988 ◽

Vol 63 (1) ◽

pp. 15-18 ◽

Cited By ~ 2

Author(s):

Jon K. Mills ◽

Jean Cunningham

Keyword(s):

Body Weight ◽

Developmental Stages ◽

Female College Students ◽

Adult Personality ◽

Adult Body ◽

Adult Body Weight ◽

Projective Measure ◽

And Behavior ◽

Attitudes And Behavior ◽

Early Developmental

Freudian theory predicts that adult personality characteristics and behavior will reflect unresolved conflicts from early developmental stages. In this study, a card from the Blum's Blacky test was used as a projective measure of oral conflict with 35 male and 61 female college students. The presence of such conflict was significantly associated with deviations from norms for body weight, greater variability in adult body weight, rating food as important, and eating more frequently. However, ratings of preoccupation with food were not significantly related to scores for oral conflict. These findings support predictions from psychoanalytic theory and also point to the continued usefulness of the Blacky test in psychoanalytic research.

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