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RESEARCH PRODUCT
Larval competition in Drosophila melanogaster: effects on development time
Andrés MoyaJ L MénsuaFernando González-candelassubject
MaleTime Factorsmedia_common.quotation_subjectZoologyPlant ScienceFresh foodPopulation densityIntraspecific competitionCompetition (biology)Feeding behaviorGeneticsAnimalsmedia_commonAnalysis of VarianceLarvabiologyEcologyFeeding BehaviorGeneral Medicinebiology.organism_classificationDrosophila melanogasterInsect ScienceRegression AnalysisFemaleAnimal Science and ZoologyAnalysis of varianceDrosophila melanogasterdescription
The effects on development time of larval competition that is interrupted at different times are analyzed in an experiment with constant larval density and varying proportions of two competing strains. Interruption of competition is carried out by means of the overfeeding technique, which allows for the study of individuals that, after several days under competition stress, either complete their development in crowded conditions or migrate to a vial with fresh food where the rest of their development takes place. Results of mean development time and within-vial variance of development time show that individuals under strong competition stress can arrest their development retaining the capability to resume it, once they are exposed to fresh food. The effects of competition are observed sooner on development time than on viabilities, which is in agreement with Ohba's observations (Biol. J. Okayama Univ. 7:87-125, 1961), but the observed effects are not always coincident for both fitness components.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-01-01 | Genetica |