Drosophila

In contrast, the drosophilas of Hawaii owe their oddity entirely to the whims of natural selection.

Moreover, the host plant relationships of cactus-specific drosophilae which serve as dispersal agents are well known (Fellows and Heed, 1972; Heed, 1978). The discussion which follows is based on the above studies of yeasts, cacti and drosophilae.