Demographic kinetics of pre-imaginal populations of Aedes mariae (Diptera : Culicidae) in west Algerian coasts

Aedes mariae is a thalassophilic complex of three sibling species whose pre imaginal instars inhabit rock-pools of the Mediterranean shores. These Aede s mariae species Sergent & Sergent, 1903 co-occur around the Tyrrhenian bas in and notably on the rocky coast of Western Algeria. During one year, a su rvey on the dynamics of populations showed that the biological cycle is obv iously different from those observed in the Northern Mediterranean sea by t he presence of active females in January and February and a reduced supply of eggs in their habits; the Aedes mariae populations of west Algerian coas ts a double strategy for development. The most important hatching recorded when conductivity ranges between 52,000 and 75,000 mum(-1) resulting from t he supply of sea water and a concentration of salts from evaporation. Condu ctivity in excess of 100,000 mum(-1), restricts the egg hatching in favour of biological desiccation.