Aquatic Oligochaete Biology V

I. Systematics and evolution.- Some characteristics of genetic variants of Tubifex tubifex (Müller, 1774) (Oligochaeta: Tubificidae) in laboratory cultures.- Morphology of some species of the genus Aulodrilus Bretscher.- A description of spermatozoan ultrastructure and some anatomical characters in Branchiobdella kozarovi Subchev, 1978 (Annelida: Clitellata), and review of the spermatozoan morphology within the genus.- II. Taxonomy and geographic distribution.- Oligochaete fauna of Lake Baikal.- A preliminary review of the taxonomic characters used for the systematics of the genus Trichodrilus Claparède (Oligochaeta, Lumbriculidae).- The enchytraeid fauna of North Africa.- Propappidae and aquatic Enchytraeidae (Oligochaeta) from the farthest southeast of Russia.- Oligochaetes (Naididae, Tubificidae, Enchytraeidae and Alluroididae) of Guyana, Peru and Ecuador.- Oligochaetes of the River Rhine. Preliminary records.- III. Distribution, abundance and habitat types.- Composition and distribution of the bottom oligochaete fauna of a north Italian eutrophic lake (Lake Ledro).- Habitat preferences and species associations of shallow-water marine Tubificidae (Oligochaeta) from the barrier reef ecosystems off Belize, Central America.- Communities of oligochaetes in mountain streams of Poland.- Oligochaeta in Spartina stems: the microdistribution of Enchytraeidae and Tubificidae in a salt marsh, Sapelo Island, USA.- Distribution of Oligochaeta in some lakes and pools of Bolivia.- Influence of small river conditions on the abundance of Tubificidae.- Aquatic Oligochaeta of the Dnieper-Bug estuary system.- On the distribution patterns and population dynamics of sublittoral and profundal oligochaeta fauna from Lake Banyoles (Catalonia, NE Spain).- Depth distribution of oligochaetesin Lake Baikal (Siberia — Russia).- IV. Ultrastructure.- Ultrastructural and histochemical comparison in haplotaxids.- An ultrastructural overview of tubificid spermatozoa.- Body wall muscles in oligochaetes.- Comparative body wall musculature and muscle fiber ultrastructure in branchiobdellidans (Annelida: Clitellata), and their phylogenetic significance.- V. Pollution studies.- Response of tidal freshwater macrobenthos to sediment disturbance.- Oligochaetes and water pollution in two deep Norwegian lakes.- A field test of a sediment bioassay with the oligochaete worm Tubifex tubifex (Müller, 1774).- Lacustrine profundal meiobenthic oligochaetes as indicators of trophy and organic loading.- Oligochaete response to changes in water flow in the Dokka Delta, Lake Randsfjorden (Norway), caused by hydroelectric power development.- An experimental manipulation of oligochaete communities in mesocosms treated with chlorphyrifos or nutrient additions: multivariate analyses with Monte Carlo permutation tests.- VI. Population dynamics.- Quantitative observations on the population ecology of Branchiura sowerbyi (Oligochaeta, Tubificidae).- Biology of Limnodrilus claparedeanus Ratzel (Oligochaeta, Tubificidae) in the Tsimlyansk Reservoir.- Population dynamics of Potamothrix alatus paravanicus Poddubnaya & Pataridze (Tubificidae) in different areas of Laken Sevan.- Influence of environmental factors on the production of Potamothrix alatusparavenicus Poddubnaya & Pataridze (Tubificidae) in different areas of Lake Sevan.- Population dynamics and energy budget of Marionina southerni (Cernosvitov) (Enchytraeidae, Oligochaeta) in the shallow littoral of Lake Esrom, Denmark.- Population dynamics of Narapa bonettoi Righi and Varela, 1983 (Oligochaeta:Narapidae) from the main channel ofthe Middle Paraná River, Argentina.- Production of some oligochaete species in large Estonian lakes.- Observations on cohorts of Tubifex tubifex cultured at different food levels, using cellulose substrate.