By Rut Collado, Rüdiger M. Schmelz (auth.), Pilar Rodriguez, Piet F. M. Verdonschot (eds.)
This publication comprises 26 contributions facing the biology of aquatic oligochaetes and covers a variety of issues together with taxonomy, morphology, ultrastructure, embryology, replica, feeding biology, ecotoxicity, neighborhood stories, and species distribution. Descriptions of latest taxa in tropical components, together with Amazonian woodland soils, in addition to overviews at the biodiversity of aquatic oligochaetes in Australia and ecu groundwaters, are provided. New morphological features in either marine and freshwater species are defined and interpreted. Laboratory stories give a contribution to the information of oligochaete feeding biology and replica. using aquatic oligochaetes in ecological possibility evaluate is analysed intimately, and standardised experimental designs for reports on bioaccumulation and pollutant move through nutrition are incorporated. ultimately, a few papers current the consequences of oliogochaetes at the functionality of an activated sludge plant, and multivariate methods to the spatial and/or temporal distribution and composition of oligochaete groups in lots of assorted parts of the area, from the size of a river to the dimensions of the microhabitat. The vast scope of this quantity is a mirrored image of modern rends, not just in oligochaete examine, but additionally regularly utilized organic studies.
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Additional info for Aquatic Oligochaete Biology VIII: Proceedings of the 8th International Symposium on Aquatic Oligochaeta, held in Bilbao, Spain 18–22 July 2000
Giani , 1982. Contribuci6n al co nocimiento del genero Pristina (Oligochaeta , Naididae ) en la Pen insula Iberica. Bol. R. Soc. Espano la Hisl. Nal. ) 80(3-4): 249 -260. Montanholi- Martins, M. C. & A. M. Taked a, 1999. Co mmunities of benthic oligoc haetes in relation to sediment structure in the upper Parana river, Brazil. Stud . Neotrop . Fauna Enviro n. 34: 52-58. O' Connor, F. 13.. 1955. Extraction of enchytraeid worms from a co niferous forest soil. Nature 175: 8 15-8 16. , 1973. Deux especes nou velles de Pristi na (Na id idae, Oli goc haeta) et leurs affinites .
However, the presence of morulae in 2 segments suggests that the sperm vesicle is large when fully developed, and the presence of spermathecae gives a third example (with P. silvicola Collado & Schmelz, 2000 and P. osborni Walton, 1905 (Erseus & Grimm, 1998» of a Pristina species that lacks a proboscis but possesses spermathecae, a character combination that contributed to the invalidation of Pristinella as a genus separate from Pristina (Collado & Schmelz, 2000). The needles of P. notopora have a peculiar shape: the proximal 3/4 or 4/5 are straight and of equal length throughout; the distal fourth or fifth is then distinctly set off by a marked kink and a subsequent reduction in diameter.
Specimens of several potentially related Palearctic species were examined for comparison : Tatriella slovenica Hrabe, 1936 2 sectioned and 2 whole mounts, from Lake Uljuste, Estonia, and Lake Terek"javr, Kola Peninsula, Russia, T. , 1998 and R. , 1998 from Lake Baikal, several dissected, P. Martin collection; Rhynchelmis paraolchonensis Giani & Martfnez-Ansemil, 19842 sectioned, from France, N. Giani collection. Segments are designated with Roman numerals; intersegmental septa are designated with Arabic numerals corresponding to the adjacent segments, as '3/4'.
Aquatic Oligochaete Biology VIII: Proceedings of the 8th International Symposium on Aquatic Oligochaeta, held in Bilbao, Spain 18–22 July 2000 by Rut Collado, Rüdiger M. Schmelz (auth.), Pilar Rodriguez, Piet F. M. Verdonschot (eds.)