The freshwater snail, L. natalensis is the intermediate host of
liver fluke, and elimination or reducing density of this snail will
reduce the chances of the disease transmission. Studies conducted
in lakes show that fish and crayfish predators play an
important role in determining the abundance of freshwater
snails. In contrast, shallow ponds and marches often lack fish
and crayfish but have abundant insect predators. Our laboratory
study on one of those insect predators; H. ephippiger nymph
showed that, this predator had the ability to search, encounter
and devour this snail. Determination of the daily prey consumed
and predation rate confirm the predatory efficiency of this
predator against L. natalensis snail. Further field studies are
required to determine the ability of this predator with the other
control types in reducing the snail population.