Mating status-dependent "choice" in competitive and noncompetitive arenas.

Area of Science:

• Evolutionary Biology
• Behavioral Ecology
• Genetics

Background:

• Polyandrous species often exhibit mating status-dependent female choice.
• Virgin females are typically used in mate choice experiments, yet their mating behavior may differ from non-virgin females.

Purpose of the Study:

• To investigate whether virgin *Drosophila melanogaster* females display indiscriminate mating.
• To compare mating choices of virgin and non-virgin females across different trial types.
• To assess the stability of female choice in relation to mating status.

Main Methods:

• Utilized 20 isofemale strains of *Drosophila melanogaster* originating from wild populations.
• Conducted single-male latency trials to record mating times.
• Performed male competition trials to assess female choice under competitive conditions.
• Differentiated female choice from male-male competitive effects.

Main Results:

• Most virgin females mated within 2 hours, while fewer than half of non-virgin females mated in the same period.
• Virgin females did not mate indiscriminately, despite mating more rapidly.
• Female choices in virgin and non-virgin groups showed strong alignment across both trial types.

Conclusions:

• The assumption that virgin females mate indiscriminately is challenged by these findings.
• Female choice in *Drosophila melanogaster* appears to be more stable across mating statuses than previously thought.
• Mating status does not significantly alter female preference patterns in this species.