Selective predation by larval Agabus (Coleoptera: Dytiscidae) on mosquitoes: support for conservation- based mosquito suppression in constructed wetlands

摘要: SUMMARY 1. Wetland insect predators can structure aquatic prey communities via selective predation, but receive considerably less attention than vertebrate predators. We conducted laboratory experiments to test predation by two species of larval dytiscid beetles (Agabus; Coleoptera: Dytiscidae) and the potential contribution these suppression mosquito populations in constructed wetlands. 2. Agabus consumed copepods, ostracods larvae no-choice tests. When offered a choice, 76% all were larvae, indicating predation. Subsequent revealed this preference was due ease capture over alternative prey. 3. Cannibalism intraguild common within between Agabus, which may reduce overall impact observed 4. selectively preyed on prey, is not characteristic some fish used as biological control agents for mosquitoes. Predator exclusion or similar field could document how results translate into natural setting. 5. The findings study suggest developing strategies focused conservation native wetland These are preferable introducing non-native generalist predators, applying pesticides.