The Identification of Congeners and Aliens by Drosophila Larvae
Table 1
Larval locomotion of D. melanogaster (the Oregon R-c, Canton-Special, Til-Til, Trana, vestigial, Orco, Syn97CS and rut strains), D.pavani (La Florida strain), D.gaucha (the Buenos Aires strain), and the pavani female x gaucha male and gaucha female x pavani male hybrids.
Locomotion was measured in four conditions: (i) on agar (agar aroma, controls), (ii) agar plus synthetic food aroma, (iii) on agar plus conspecific odors, and (iv) on agar plus alien food aroma. For D. melanogaster larvae, D. pavani food was used as alien food. To D. pavani, D. gaucha and the hybrid larvae, alien food means D. melanogaster (Oregon R-c) food. Locomotion of N = 50 third instar larvae of each strain and species was measured by 2 min (see Materials and Methods).