Vertical distribution and diel migration of rotifers in a Parana River floodplain lake Susana Jose de Paggi OriginalPaper Pages: 87 - 94
Combined effect of the insecticide carbaryl and the Chaoborus kairomone on helmet development in Daphnia ambigua Takayuki Hanazato OriginalPaper Pages: 95 - 100
Chitin production by Ampelisca (Amphipoda) populations from a fine sand community in the Bay of Morlaix (English channel) Marie-Françoise Voss-FoucartJean-Claude DauvinCharles Jeuniaux OriginalPaper Pages: 101 - 106
Marine gastrotrichs from the sand beaches of the northern Gulf of Mexico: species list and distribution M. Antonio TodaroJohn W. FleegerWilliam D. Hummon OriginalPaper Pages: 107 - 117
Keratella mexicana sp. nov., a new planktonic rotifer from Aguascalientes, Mexico L. A. KutikovalM. Silva-Briano OriginalPaper Pages: 119 - 122
Groundwater-surface water ecotones at the upstream part of confluences in former river channels Gudrun BornetteAndrew R. G. Large OriginalPaper Pages: 123 - 137
Population dynamics and food of bleak (Alburnus alburnus L.) in the littoral zone of Lake Balaton, Hungary P. BíróI. B. Muskó OriginalPaper Pages: 139 - 149
The freshwater planarian Dugesia sicula Lepori from Sardinia (Platyhelminthes, Tricladida) Maria PalaRosa Alba VaccaGiacinta Stocchino OriginalPaper Pages: 151 - 156
Occurrence of Diaphanosoma excisum (Sars) on a sandy beach at Balramgari (Orissa), India Anil ChatterjiZ. A. AnsariA. H. Parulekar OriginalPaper Pages: 157 - 161