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An Evaluation of an Experimental Model for Sympatric Speciation

(b) Eggs as attractants

(b) Eggs as attractants

This test was performed in an attempt to assess the possibility that freshly laid eggs might act as ovipositional attractants. Sample populations of 200 females flies were offered a choice of two egg laying phials, one having the egg laying medium scattered with freshly laid eggs, the other being untreated egg laying medium. Numbers of eggs used as "attractant" were counted before use in order that they would not weight the results of the experiment.