In Drosophila, an example of position effect variegation in the fly eye. 

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#Unit 10. Ecological Principles

The superior competitor hypothesis suggests invasives are more efficient users of natural resources than natives.

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#Id: 1881

#Unit 10. Ecological Principles

The propagule pressure hypothesis suggests invasives produce more progeny than some native species.

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#Id: 1882

#Unit 10. Ecological Principles

Outcomes of Competition- 

Reduction in population sizes

Change in space use or activity 

Competitive exclusion

Character displacement

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#Id: 8657

#Unit 10. Ecological Principles

Competition as a negative interaction between two species that depend on the same limiting resource to survive, grow, and reproduce.

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#Id: 8658

#Unit 10. Ecological Principles

Intraspecific competition - Competition among individuals of the same species. 

Interspecific competition - Competition among individuals of different species

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#Id: 8659

#Unit 10. Ecological Principles