“…The lotic and lentic freshwater systems consisting of ditches, streams, rivers, and ponds are abundant in many kinds of aquatic insect larvae, as represented by Diptera (flies and mosquitoes), 1) Ephemeroptera (mayflies), 2) Plecoptera (stoneflies), 3) and Trichoptera (caddisflies), 4) in each of which more than thousands of species are known. Their larvae are an important food source for fish, amphibians, birds, and semi-aquatic mammals, 5,6) indicating the possible biomagnification of a pesticide if it is bioaccumulated.…”