摘要: remain to be discovered. Amazingly, 25% of the known species are endemic Hawaiian Islands (12). Drosophila have a number characteristics which enhance their value for behav ioral studies. They small but not minute organisms (2-7 mm), short generation time (10-30 days), and an adult life span several weeks months. Many can successfully reared maintained in laboratory. Single-pair matings easily achiev ed, thus flies pedigree studied. Field-captured specimens cannot bred laboratory periods healthy condition on normal diets so that behaviors may Significantly, laboratory-reare d or