Rotatoria : Proceedings of the 2nd International Rotifer Symposium Held at Gent, September 17–21, 1979

At the end of the first international Symposium on Rotifers diately accepted to do this, and kindly made an entire in Lunz, Austria, September 1976, entousiastic pleas were special volume of its Journal 'Hydrobiologia' available made for a second gathering of possibly the same format for this purpose. Also, arrangements were made to have and spirit that had made the first one such a great success. the proceedings out as quickly as possible. The proceedings include all papers that were presented One of us (HJD), 'supported' herein by his friends Charles E. King and Jens Petter Nilssen in particular, tentatively in Gent, and two communications by collegues who could suggested that Gent University might host a meeting of not attend in person. They thus amount to 23 original con­ this kind, having in mind that since the Xlth congress of tributions, including the summaries of the workshops. All SIL in 1950, no other SIL activity had take places in have been reviewed by the editors, and many, in addition Belgium. In view of the relatively large number of Be1gian by one or more referees. Manuscripts have been adjusted, rotifer workers, many among which are or were active in wherever needed, for grammar, clarity of meaning, and Gent, this proposal sounded acceptable to the attendance length. However, where possible, the flavor of some per­ of the Lunz meeting, who then gave each other rendez sonal styles was left unaltered. Front Matter....Pages 1-6 Preface....Pages 7-11 A Perspective on Aging in Rotifers....Pages 13-19 Experimental Observations on Maternal Reproductive Rate and Offspring Characteristics....Pages 21-25 About a Transmissible Influence Through Several Generations in a Clone of the Rotifer Notommata Copeus Ehr.....Pages 27-31 Workshop on Culture Techniques of Rotifers....Pages 33-35 Methods for Obtaining an Axenic Culture of Habrotrocha Rosa Donner 1949....Pages 37-38 Some Problems in the Embryogenesis of Habrotrocha Rosa Donner 1949....Pages 39-41 The Determination of the Chromosome Number of Habrotrocha Rosa Donner, 1949....Pages 43-44 Mass Culture Experiments With Brachionus Rubens....Pages 45-50 Hatching of Brachionus Rubens O. F. Müller Resting Eggs (Rotifers)....Pages 51-54 Induction of Sexual Reproduction and Resting Egg Production in Brachionus Plicatilis Reared in Sea Water....Pages 55-58 The Effect of Some Biotic and Abiotic Factors on the Fertility of Planktonic Rotifer Species....Pages 59-62 Aspects of the Feeding Behavior and Trophic Ecology of Suspension-Feeding Rotifers....Pages 63-72 In Situ Clearance Rates of Planktonic Rotifers....Pages 73-77 Studies on the Grazing Rate of Notholca Squamula Müller on Asterionella Formosa Hass. At Different Temperatures....Pages 79-81 Detrital Feeding in Natural Zooplankton Communities: Discrimination Between Live and Dead Algal Foods....Pages 83-85 Observations on the Susceptibility of Some Protists and Rotifers to Predation by Asplanchna Girodi....Pages 87-91 Phylogenetic Relationships of Rotifers, as Derived from Photoreceptor Morphology and Other Ultrastructural Analyses....Pages 93-117 A Simplified Method for the Preparation of Rotifers for Transmission and Scanning Electron Microscopy....Pages 119-122 Ultrastructure and Histochemistry of the Rudimentary Gut of Male Asplanchna Sieboldi (Rotifera)....Pages 123-126 An Ultrastructural Approach to Feeding Behaviour in Philodina Roseola and Brachionus Calyciflorus (Rotifers) I. The Buccal Velum....Pages 127-131 An Ultrastructural Approach to Feeding Behaviour in Philodina Roseola and Brachionus Calyciflorus (Rotifers) II. The Oesophagus....Pages 133-136 An Ultrastructural Approach to Feeding Behaviour in Philodina Roseola and Brachionus Calyciflorus (Rotifers) III. Cilia and Muscles. Conclusions....Pages 137-141 Workshop on the Determination of Population Parameters....Pages 143-143 Metabolic Uniformity Over the Environmental Temperature Range in Brachionus Plicatilis (Rotifera)....Pages 145-147 Density-Dependent Sexual Reproduction in Natural Populations of the Rotifer Asplanchna Girodi....Pages 149-152 The Rotifer Fauna of the River Loire (France), at the Level of the Nuclear Power Plants....Pages 153-160 Ten Years Quantitative Data on a Population of Rhinoglena FertÖEnsis (Brachionidae, Monogononta)....Pages 161-167 The Abundance and Distribution of Filinia Terminalis in Various Types of Lakes as Related to Temperature, Oxygen, and Food....Pages 169-175 On the Ecology of Notholca Squamula Müller in Loch Leven, Kinross, Scotland....Pages 177-180 Ecology of Sessile Rotifers....Pages 181-193 Respiration of Different Stages and Energy Budgets of Juvenile Brachionus Calyciflorus....Pages 195-197 Field Experiments on the Optical Orientation of Pelagic Rotifers....Pages 199-203 Workshop on Taxonomy and Biogeography....Pages 205-206 Variation in the Genus Keratella....Pages 207-213 On the Evolutionary Pathways of Speciation in the Genus Notholca....Pages 215-220 Preliminary Remarks on the Characteristics of the Rotifer Fauna of Australia (Notogaea)....Pages 221-227 Synopsis of Taxonomic Studies on Indian Rotatoria....Pages 229-236 An Historical Survey of the Collection and Study of Rotifers in Britain....Pages 237-240 Asymmetry and Variation in Keratella Tropica....Pages 241-248 Some Peculiar Elements in the Rotifer Fauna of the Atlantic Sahara and of the Atlas Mountains....Pages 249-254 On Morphological Variation in Keratella Cochlearis Populations from Holstein Lakes (Northern Germany)....Pages 255-258 Note on Some Brachionidae (Rotifers) From The Netherlands....Pages 259-262 Back Matter....Pages 263-263