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Cladoceransaresmallcrustaceanswhichlivealmostexclusivelyinfreshwater.Only8speciesfromthefamiliesofSididaeandPodonidaearetrulymarine[1].Becauseoftheirlowdiversityandsmallpopulationsize,thebiologyandecologyofmarinecladoceranshavereceivedrelativelylittleatte