hydrobiologia volume 209, contents No. 1 W. C. Guest & R. W. Drenner: Relationship between feeding of blueback herring and the zooplankton community of a Texas reservoir P. F. Kasigwa & C. G. Mahika: The diet of the edible cockle Anadara antiquata L. (Bivalvia, Arcidae) in Dar es Salaam, Tanzania, during the northeast monsoons W. L. Nicholas, J. A. Elek, A. C. Stewart & T. G. Marples: The nematode fauna of a temperate Australian mangrove mudflat; its population density, diversity and distribution G. C. Garman & J. R. Moring: Initial effects of deforestation on physical characteristics of a boreal river Y. |. Sorokin & T. 1. Mamaeva: Role of planktonic bacteria in productivity and cycling of organic matter in the Eastern Pacific Ocean P. Bird, S. E. Sadek & G. Paulovits: The food of bream (Abramis brama L.) in two basins of Lake Balaton of different trophic status J. M. Jackson & A. J. Mclachlan: Rain-pools on peat moorland as island habitats for midge larvae G. L. Cromar & D. D. Williams: Centrifugal flotation as an aid to separating invertebrates from detritus in benthic samples S. U. Panampunnayil & M. Viswakumar: Spelaeomysis cochinensis, a new mysid (Crustacea: Mysidacea) from a prawn culture field in Cochin, India F. Johansson: Foraging modes in an assemblage of odonate larvae — effects of prey and inter- ference No. 2 J. E. Cooper, J. Early & A. J. Holding: Mineralization of dissolved organic phosphorus from a shallow eutrophic lake 89 J. Green & S. Mengestou: Specific diversity and community structure of Rotifera in a salinity series of Ethiopian inland waters 95 A. Mariazzi, V. Conzonno, R. Echenique & H. Labollita: Physical and chemical characters, phytoplankton and primary production of Ezequiel Ramos Mexia Reservoir (Argentina) 107 C. Teixeira & S. A. Gaeta: Contribution of picoplankton to primary production in estuarine, coastal and equatorial waters of Brazil 117 S. D. Gribbin & D. J. Thompson: Emergence of the damselfly Pyrrhosoma nymphula (Sulzer) (Zygoptera: Coenagrionidae) from two adjacent ponds in northern England 123 P. W. G. Daldorph & J. D. Thomas: Snail cadavers as sources of short-chain carboxylic acids to scavenging freshwater invertebrates 133 D. S. Brown: Freshwater snails of Sao Tomé, with special reference to Bulinus forskalii (Ehrenberg), host of Schistosoma intercalatum 141 R. L. Fuller & J. B. Bucher: A portable chamber for measuring algal primary production in streams 155 Y. Bouvet, K. Soewardi & E. Pattee: The discrimination of roach Rutilus rutilus (Linnaeus, 1758) populations in different parts of a river system. An investigation using biochemical markers 161 W. Koste: Anuraeopsis miraclei, a new planktonic rotifer species in karstic lakes of Spain 169 No. 3 E. Lahti & P. Muje: Egg quality and female condition in vendace (Coregonus albula L.) before and during spawning Zhenkang Xu & C. W. Burns: Effects of the epizoic ciliate, Epistylis daphniae, on growth, reproduc- tion and mortality of Boeckella triarticulata (Thomson) (Copepoda: Calanoida) J. Garnier & D. Benest: Planktonic bacterial biomass and seasonal pattern of the heterotrophic uptake and respiration of glucose and amino acids in the shallow sandpit lake of Créteil (Paris Suburb, France) S. Mengestou, J. Green & C. H. Fernando: Species composition, distribution and seasonal dynamics of Rotifera in a Rift Valley lake in Ethiopia (Lake Awasa) K. V. Slack, L. J. Tilley & S. S. Kennelly: Mesh-size effects on drift sample composition as deter- mined with a triple net sampler P. J. S. Martin & J. D. Edman: Comparison of water ingestion between black flies (Simuliidae) and a mosquito (Aedes aegypti; Culicidae) using radiolabelled glucose H. S. Sehgal & E. B. Welch: A case of unusually high oxygen demand in a eutrophic lake P. Bodin: Perturbations in the reproduction cycle of some harpacticoid copepod species further to the Amoco Cadiz oil spill B. D. Parashar & K. M. Rao: Direct and delayed effects of low temperature on the freshwater snail Indoplanorbis exustus (Deshayes, 1934), intermediate host of schistosomiasis hydrobiologia volume 209, author index Benest, D., 191 - Green, J., 95, 203 Panampunnayil, S. U., 71 Bird, P., 51 Gribbin, S. D., 123 Parashar, B. D., 259 Bodin, P., 245 Guest, W. C., 1 Pattee, E., 161 Bouvet, Y., 161 Holding, A. J., 89 Paulovits, G., 51 Brown, D. S., 141 Jackson, J. M., 59 Rao, K. M., 259 Bucher, J. B., 155 Johansson, F., 79 Sadek, S. E., 51 Burns, C. W., 183 Kasigwa, P. F., 7 Sehgal, H. S., 235 Conzonno, V., 107 Kennelly, S. S., 215 Slack, K. V., 215 Cooper, J. E., 89 Koste, W., 169 Soewardi, K., 161 Cromar, G. L., 67 Labollita, H., 107 Sorokin, Y. |., 39 Daldorph, P. W. G., 133 Lahti, E., 175 Stewart, A. C., 13 Drenner, R. W., 1 Mahika, C. G., 7 Teixeira, C., 117 Early, J., 89 Mamaeva, T. |., 39 Thomas, J. D., 133 Echenique, R., 107 Mariazzi, A., 107 Thompson, D. J., 123 Edman, J. D., 227 Marples, T. G., 13 Tilley, L. J., 215 Elek, J. A., 13 Martin, P. J. S., 227 Viswakumar, M., 71 Fernando, C. H., 203 Mclachian, A. J., 59 Welch, E. B., 235 Fuller, R. L., 155 Mengestou, S., 95, 203 Williams, D. D., 67 Gaeta, S. A., 117 Moring, J. R., 29 Xu Zhenkang, 183 Garman, G. C., 29 Muje, P., 175 Garnier, J., 191 Nicholas, W. L., 13