Respiratory quotient and ammonia quotient in Tilapia mossambica (Peters) with special reference to hypoxia and recovery Mohamed M. PeerM. N. Kutty OriginalPaper Pages: 3 - 9
Preferred egg laying sites in Palmacorixa nana (Heteroptera : Corixidae) Ron Aiken OriginalPaper Pages: 11 - 12
Presence of carotenoids in Gordius aquaticus (Nematomorpha, Nemathelminthes) specimens from deep wells B. Czeczuga OriginalPaper Pages: 13 - 15
Growth rate and changes in tissue carbohydrates during schistosome infection of the snail biomphalaria alexandrina Ahmed M. MohamedM. M. Ishak OriginalPaper Pages: 17 - 21
Effects of pH, phosphate and ammonia on the rate of uptake of nitrate and ammonia by freshwater phytoplankton Dale W. Toetz OriginalPaper Pages: 23 - 26
Gammarus desperatus, a new species from New Mexico (Crustacea : Amphipoda) Gerald A. Cole OriginalPaper Pages: 27 - 32
The Gammaridae and Corixidae of an inland saline lake from 1975 to 1978 A. A. Savage OriginalPaper Pages: 33 - 44
Studies in parasitic watermolds of Kumaun Himalayas: The host range of five species of olpidiopsis R. D. KhulbeK. S. Bhargava OriginalPaper Pages: 45 - 47
Fluctuation of deoxyribonuclease activity from late spring to autumn in Tokyo Bay M. MaedaN. Taga OriginalPaper Pages: 49 - 55
Structural characteristics of algal communities in thermally altered artificial streams Edward W. WildeLaurence J. Tilly OriginalPaper Pages: 57 - 63
Preliminary investigations on the utilization of tubificid worms by postlarvae of Macrobrachium lanchesteri (de Man) R. PonnuchamyKatre ShakuntalaS. Ravichandra Reddy OriginalPaper Pages: 65 - 67
Two new species of Cladoceran crustaceans of the genera macrothrix baird and Alona baird from Malaysia B. A. G. IdrisC. H. Fernando OriginalPaper Pages: 81 - 85
Neurosecretory cells in the optic lobe of two aquatic coleopteran species, Dineutes indicus aube and Cybister rugulosus redt Surekha P. Barde OriginalPaper Pages: 97 - 101
Aquatic oligochaeta from among the roots of eichhornia crassipes solms K. Vanamala NaiduK. KalpanaK. Suresh Kumar OriginalPaper Pages: 103 - 112
Some aquatic oligochaetes of the Nilgiris, South India K. Vanamala NaiduK. Abhinender Naidu OriginalPaper Pages: 113 - 118
Chironomidae (Diptera) of Baldwin Lake, Illinois, a cooling reservoir Richard B. ParkinJohn B. Stahl OriginalPaper Pages: 119 - 128
Polymorphism in gloeotaenium (Chlorococcales, Chlorophyceae) P. V. Devi PrasadY. B. K. Chowdary OriginalPaper Pages: 129 - 133
Trophic structure and energy flow in a Texas pond W. Michael ChildressLloyd C. FitzpatrickWilliam D. Pearson OriginalPaper Pages: 135 - 143
The effects of cadmium and mercury on gemmule formation and gemmosclere morphology in Ephydatia fluviatilis (Porifera : Spongillidae) Mary Mysing-GubalaMichael A. Poirrier OriginalPaper Pages: 145 - 148
Effects of short-term changes in rain water supply on the ionic composition of acid moorland pools in the Campine of Antwerp (Belgium) J. H. D. VangenechtenF. BosmansH. Deckers OriginalPaper Pages: 149 - 159
The freshwater Calanoida (Crustacea: Copepoda) of Thailand H. C. LaiC. H. Fernando OriginalPaper Pages: 161 - 178
Chrysophyceae from freshwater localities near Nijmegen, The Netherlands R. M. M. Roijackers OriginalPaper Pages: 179 - 189
