Influence of temperature and body weight on mosquito predation by the dragonfly nymph Mesogomphus lineatus

Population densities, migrations and food composition of Echinogammarus veneris in Lake Kinneret were studied during march–September 1976. Migrations are affected by changes of water level and littoral currents. Peridinium was abundant in the gut content during its blooming period in the lake while cladocerans, benthic copepods, rotifers and other algae were abundantly found in other months. Metabolic parameters that were calculated for the gammarid population indicated that its contribution to the carbon-flow system in Lake Kinneret is negligible in comparison with nematodes, molluscans or planktonic copepods and cladocerans.