Aquatic Oligochaetes, 1999 Proceedings of the 7th International Symposium on Aquatic Oligochaetes held in Presque Isle, Maine, USA, 18–22 August 1997 Developments in Hydrobiology Series, Vol. 139

The book contains papers on the biology of aquatic oligochaetes and some related groups. They cover a wide range of topics including phylogeny, taxonomy, geographic distribution, freshwater and marine ecology, population dynamics, histology and ultrastructure, physiology and behaviour. The wide scope is in line with recent trends in annelid research with less emphasis on pollution studies and faunistics and a renewed interest in experimental biology using new techniques.

Historical reviews.- Past Symposium Attendees in the Group Photograph.- Retrospect and Prospect: Reflections on Forty Years of Study of Aquatic Oligochaetes.- Taxonomy and Geographic Distribution.- Zoogeography of Branchiobdellidans (Annelida) and Temnocephalidans (Platyhelminthes) Ectosymbiotic on Freshwater Crustaceans, and their Reactions to one Another in Vitro.- Studies on the Aquatic Oligochaete Fauna in Lake Biwa, central Japan. II. Records and Taxonomic Remarks of nine Species.- Monopylephorus Camachoi nov. sp., a New Rhyacodriline Worm (Tubificidae, Clitellata) from the Coiba Island, on the East Pacific Coast of Panama.- Records of Enchytraeidae (Clitellata) from the People’s Republic of China.- Distribution of Freshwater Oligochaetes in the West and East Coastal Regions of the North Pacific Ocean.- Systematics and Evolution.- Enzymatic Variability in Sympatric Species of Tubifex (Clitellata: Tubificidae).- Terrestrial Polychaetes — Models for the Evolution of the Clitellata (Annelida)?.- Distribution, Abundance and Habitats.- Clitellate Diversity in Nationalstadsparken, an Urban National Park in Stockholm, Sweden.- Finding Enchytraeid Oligochaetes (Clitellata) in Hot Climates: Species Occurrence on the Shores of Bermuda.- Spatial Distribution of Oligochaetes (Clitellata) in the Tidal Freshwater and Brackish Parts of the Scheide Estuary (Belgium).- Distribution and Dispersal Capacity of the Ponto-Caspian Tubificid Oligochaete Potamothrix heuscheri (Bretscher, 1900) in Scandinavia.- Oligochaeta and Aphanoneura in two Northern German Hardwater Lakes of Different Trophic State.- Micro-Distribution of Oligochaetes in a Soft-Bottomed Lowland Stream (Elsbeek; The Netherlands).- Oligochaeta from the Abyssal Zone of Lake Baikal (Siberia, Russia).- Oligochaetes ofKaravasta Lagoon (Albania). Preliminary results.- Population Dynamics.- A Comparison among Different Population Models for Limnodrilus hoffmeisteri Claparè de (Oligochaeta, Tubificidae).- Assessment of Secondary Production of Naididae (Oligochaeta): an Example from a North German Lake.- Histology and Ultrastructure.- Ultrastructure and Functional Significance of Intestinojunctional Spermathecae in en Chytraeids (Oligochaeta, Annelida).- New Sperm Types in Naididae and Lumbriculidae (Annelida: Oligochaeta) and their Possible Phylogenetic Implications.- CLSM Analysis of Serotonin-Immunoreactive Neurons in the Central Nervous System of Nais variabilis, Slavina Appendiculata and Stylaria lacustris (Oligochaeta: Naididae).- Development, Physiology and Behaviour.- Tubificoides benedii (Tubificidae, Oligochaeta) — a Pioneer in Hypoxic and Sulfidic Environments. An Overview of Adaptive Pathways.- Decoupling of Fission and Regenerative Capabilities in an Asexual Oligochaete.- Autotomy Reflex in a Freshwater Oligochaete, Lumbriculus variegates (Clitellata: Lumbriculidae).- Helical Swimming and Body Reversal Behaviors in Lumbriculus variegatus (Annelida: Clitellata: Lumbriculidae).- Pollution Studies.- Bioaccumulation Test with Tubificid Sludgeworms in Artificial Media — Development of a Standardisable Method.- Progress Report.- Lumbriculids, Branchiobdellidans and Leeches: An Overview of Recent Progress in Phylogen Etic Research on Clitellates.