Many studies on biological control of freshwater snails using
natural enemies have been reported [15–17]. Although some
insect predators of snail-host species have been taken into account
but other predatory insects like Odonata and Dytiscidae
require further study [18]. In view of this, the present study was
aimed at evaluating the predation potential of the dragonfly
Hemianax ephippiger Burmeister 1839 (H. ephippiger) nymph
of the Fasciola snail intermediate host, L. natalensis. The
searching behavior of the predator towards the different snailsizes was also measured. The results of the present study will
provide a primary basis for assessment of this predator as
biological resource against freshwater snails.