Drosophila hemipeza is an endangered fruit fly that is only found on the Hawaiian island of Oahu and known from seven localities. Larvae feed on rotting bark of Urera kaalae, an endangered plant that lives on slopes and gulches. In 2004, only 40 individual U. kaalae were known to remain. Assume a generation time of 0.1 and an effective/adult ratio of 0.012 for D. hemipeza. A: Assuming that each plant can support 100 adult D. hemipeza, if the plant population is maintained at 40 individuals does D. hemipeza face a significant loss (>10%) of genetic diversity over the following 10 years? B: If not, how many plants should be added to meet the conservation goals for D. hemipeza?

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