Rotifer Symposium IV

Bruno B?rzi?s, in memoriam, 1909-1985.- One: Taxonomy and Biogeography.- Keratella cochlearis (Gosse) in Africa.- Distribution of rotifers in African fresh and inland saline waters.- On species of the genus Lepadella (Eurotatoria: Monogononta: Colurellidae) from North-Eastern India, with remarks on Indian taxa.- The Rotifera of impoundments in Southeastern Australia.- Tasmanian Rotifera: Affinities with the Australian fauna.- Intraspecific variability of Brachionus plicatilis.- Rotifera from Northwestern Canada.- Coexistence of rotifer (Brachionus plicatilis) clones in Soda Lake, Nevada.- Rotifers from Turkey.- Distribution of Brachionus species in Spanish mediterranean wetlands.- Biometric variation in three strains of Brachionus plicatilis as a direct response to abiotic variables.- Taxonomical and ecological notes on Hexarthra bulgarica from high mountain lakes and ponds of Sierra Nevada, Spain.- Rotifer fauna of lakes and ponds over 2500 m above sea level in the Sierra Nevada, Spain, with description of a new subspecies.- Rotifer fauna in the periphyton of Karst rivers in Croatia, Yugoslavia.- Rotifer occurrence in relation to pH.- Two: Bdelloids.- Ecology of Bdelloids: How to be successful.- A bdelloid rotifer living as an inquiline in the leaves of the pitcher plant. Sarracenia purpurea.- Specificity of the alpha-tocopherol (vitamin E) effect on the lifespan and fecundity of Bdelloid rotifers.- Three: Colonial Rotifers.- Coloniality in the phylum Rotifera.- Conochilus in Lake Washington.- Four: Population Dynamics and Spatial Distribution.- The analysis of planktonic rotifer populations: a plea for long-term investigations.- The influence of sampling strategy on the apparent population dynamics of planktonic rotifers.- Abundance and distribution of pelagic rotifers in a cold, deep, oligotrophic alpine lake (Koenigssee).- Population dynamics of hypolimnetic rotifers in the Pluss-see (north Germany).- Environmental factors influencing the vertical migration of planktonic rotifers in a hypereutrophic tarn.- Comparative population dynamics of the rotifers Brachionus angularis and Keratella cochlearis.- Changes in the population dynamics of Keratella cochlearis (Gosse), Kellicottia longispina (Gosse) and Polyarthra vulgaris (Carlin) in a fertilised enclosure.- The population dynamics of Keratella cochlearis in a hypereutrophic tarn and the possible impact of predation by young roach.- Post-encounter vulnerability of some rotifer prey types to predation by the copepod Acanthocyclops robustus.- The Polyarthra escape response: Defence against interference from Daphnia.- Rotifers, cladocerans and planktivorous fish: what are the major interactions?.- Five: Aquaculture, Feeding and Nutrition.- Raising rotifers for use in aquaculture.- Production and nutritional quality of the rotifer Brachionus plicatilis fed marine Chlorella sp. at different cell densities.- The use of marine yeast (Candida sp.) and bakers' yeast (Saccharomyces cerevisiae) in combination with Chlorella sp. for mass culture of the rotifer Brachionus plicatilis.- A consideration of why mass culture of the rotifer Brachionus plicatilis with bakers' yeast is unstable.- The components of feeding behavior in rotifers.- Effects of feeding on respiration of the rotifer Brachionus plicatilis.- A laboratory study of feeding and assimilation in Euchlanis dilatata lucksiana.- The potential for population growth of Ascomorpha ecaudis.- Further nutritional studies on the rotifer Encentrum linnhei.- Six: Reproduction.- Planktonic rotifers and temperature.- Effect of algal diet and temperature on the embryonic development time of the rotifer Brachionus plicatilis in culture.- Factors influencing the occurrence of males in natural populations of Synchaeta spp..- Fertilization and male fertility in the rotifer Brachionus plicatilis.- Effect of incubation temperature on the hatching of rotifer resting eggs collected from sediments.- Seven: Ultrastructure, Biochemistry and General Methodology.- Movement in rotifers: correlations of ultrastructure and behavior.- Ultrastructure and histochemistry of the stomach of Asplanchna sieboldi.- Neuropharmacology of rotifer feeding, oviposition and anesthesia.- Combined influences of particulate and dissolved factors in the toxicity of Microcystis aeruginosa (NRC-SS-17) to the rotifer Brachionus calyciflorus.- A centrifugation method for measuring the relative density (specific gravity) of planktonic rotifers (Rotifera), with values for the relative density of Polyarthra major (Burkhardt) and Keratella cochlearis (Gosse).