Incorporating density dependence into the oviposition preference-offspring performance hypothesis.

Area of Science:

• Ecology
• Evolutionary Biology
• Behavioral Ecology

Background:

• Theory predicts positive oviposition preference-performance relationships.
• Environmental heterogeneity and density-dependent processes can alter these relationships.

Purpose of the Study:

• Investigate effects of environmental heterogeneity and density feedback on mosquito offspring performance.
• Examine how oviposition activity, colonization, and larval density vary across habitats and resources.
• Determine how conspecific density, resource type, and habitat influence performance.

Main Methods:

• Field experiments with tree-hole mosquitoes.
• Manipulated environmental heterogeneity and density-dependent feedback.
• Assessed oviposition activity, larval density, and offspring performance across different habitats and resources.

Main Results:

• Offspring performance did not differ among habitats at low densities.
• Performance was higher in deciduous than evergreen forests at high densities.
• Oviposition activity and larval densities were higher in deciduous forests, indicating a weak preference.

Conclusions:

• Fitness differences among habitats can be density-dependent.
• This density dependence can lead to negative preference-performance relationships at low densities and positive ones at high densities.
• Recognizing density-dependent fitness is crucial for understanding oviposition preferences in natural systems.