The mating system of the true fruit fly Bactrocera tryoni and its sister-species, Bactrocera neohumeralis.

摘要: The frugivorous "true" fruit fly, Bactrocera tryoni (Queensland fly), is presumed to have a nonresourced-based lek mating system. This largely untested, and contrary data exists suggest may resource-based system focused on fruiting host plants. We tested the of tryoni, its close sibling neohumeralis, in large field cages using laboratory reared flies. used observational experiments that allowed us determine if: (i) pairs were aggregated or nonaggregated; (ii) was resource nonresource based; (iii) flies utilized possible landmarks (tall trees over short) as mate-rendezvous sites; (iv) males called females from male-dominated leks. recorded nearly 250 across all experiments, revealing that: aggregated; always occurred tall short; arrived at site together with no evidence preceded females. neohumeralis copulations much more infrequent (only 30 total), but for those there similar preference Some aspects behavior align theoretical expectations lekking system, others do not. Until unequivocal female choice can be provided (as predicted under true lek), best described based, aggregation which we also land-marking involved.