Titlebook: Aquatic Oligochaete Biology VIII; Proceedings of the 8 Pilar Rodriguez,Piet F. M. Verdonschot Conference proceedings 2001 Kluwer Academic P

肉體

Oligochaetes in southern European groundwater: New records and an overview the first outside of North America. This indicates that the family is widely distributed in the Palearctic region and typical of underground waters. Here, we update the previous evaluation of the knowledge about oligochaetes inhabiting groundwater: 96 species of stygobiont freshwater oligochaetes (

使堅(jiān)硬

hegemony

Incorruptible

Mysterious ‘crystals’: found attached to the epidermal peritoneum of marine tubificid (Annelida, Cli, which may be continuous with the coelomic peritoneum. The numbers of ‘crystals’ per individual worm are estimated at 100–400 per body segment, or well over 2 x 10. in an adult worm. ‘Crystals’ are found: throughout the length of the worms, in all individuals of species in which ‘crystals’ occur, a

最高峰

Pattern formation in embryos of the oligochaete annelid ,: cellular basis for segmentation and specind a part of the next posterior clone. Morphogenetic events, including segmentation, in an ectodermal bandlet proceed normally in the absence of neighboring ectodermal bandlets. Without the underlying mesoderm, separated SEs fail to space themselves at regular intervals along the anteroposterior axi

規(guī)章

暗語

Cocoon deposition of , Ohtaka (Tubificidae) in Lake Biwa, Japanhat most cocoons were located less than 2 cm beneath the sediment surface. Under laboratory conditions, . produces a single cocoon during its lifetime, with a large number of eggs in midwinter, a period when potential prédation on the eggs is supposed to be at its lowest during the year, in Lake Biw

prodrome

Utility and relevance of aquatic oligochaetes in Ecological Risk AssessmentThird, their taxonomy is considered difficult and uncertain. In fact, aquatic oligochaetes potentially have great utility and relevance to EcoRAs because of factors including: their importance in the aquatic food chain (e.g. prey to fauna including fish and waterfowl; as a vector for contaminant mov

grudging

as a link in food chain transfer of hexachlorobenzene from contaminated sediment to fishdiment and reconstituted water as the overlying medium were used. Experiments were performed using .C-labelled hexachlorobenzene, a hydrophobic pollutant as a model compound. To examine the influence of benthic prey on the bioaccumulation of the test substance in the predator, fish were exposed to s

Entrancing