A review of the genus Ilyocryptus (Crustacea: Anomopoda) from Europe.- A comparison of populations from the Daphnia similis group (Cladocera: Daphniidae).- The genus Diaphanosoma (Ctenopoda: Sididae) in Spain.- Review of Iberian Cladocera with remarks on ecology and biogeography.- Additional cladoceran records for Mantecal and new for Venezuela.- Comparative-morphological and comparative-ecological analysis of the Sidoidea (Crustacea: Daphniiformes): the main moments of the topic.- The Bosmina kessleri-like morphotype of Eubosmina in Lake Muskoka, Ontario, Canada, as putative interspecific hybrids.- The late-glacial/holocene Bosmina (Eubosmina) fauna of Lake Constance (Untersee) (F.R.G.): traces of introgressive hybridization.- The history of the genus Eubosmina in Lake Mondsee (Upper Austria).- Impact of prehistoric settlements on the Cladocera in the sediments of Lakes Suszek, B??dowo, and Skrzetuszewskie.- The influence of biomass and structure of the crustacean plankton on the water transparency in the Saidenbach storage reservoir.- Effect of food conditions on the bacterial feeding of Daphnia galeata.- Mechanisms of food selection in Daphnia.- Feeding behaviour and morphology of the filtering combs of Daphnia galeata.- Mechanisms of the filtering area adaptation in Daphnia.- Effect of previous feeding conditions on survival in Daphnia pulicaria (Crustacea: Cladocera).- Reproductive effort in Daphnia galeata: comparison of reservoir and pond populations.- Indirect effect of planktivorous fish on the growth and reproduction of Daphnia galeata.- Density and size distribution of Daphnia populations at different fish predation levels.- Impact of fishery management on Cladoceran populations.- An analysis of the phototactic behaviour of Daphnia magna clones and their sexual descendants.- Ecological genetics of Norwegian Daphnia. II. Distribution of Daphnia longispina genotypes in relation to short-wave radiation and water colour.- Differences in life-history and aging in two clonal groups of Daphnia cucullata Sars (Crustacea: Cladocera).- The components of life-history traits variation in Daphnia magna population.- Differences in demographic parameters among electrophoretic clones of Daphnia obtusa Kurz (Crustacea: Cladocera).- Photoperiod and temperature as inducers of gamogenesis in a dicyclic population of Scapholeberis armata Herrick (Crustacea: Cladocera: Daphniidae).- Intraspecific variability in response to stimuli for male and ephippia formation in Daphnia pulex.- Salinity tolerance and morphology of the osmoregulation organs in Cladocera with special reference to Cladocera from the Aral sea.- Self-maintaining plankton: pelagic Cladocera in small microcosms with lake water.- Succession of cladocerans in a northern Italian ricefield.- Qualitative changes in the planktonic Cladocera assemblage of a High Tatra Mountains lake during the last 100 years.