Implications of sea mining for the Red Sea environment Y. B. Abu Gideiri OriginalPaper Pages: 15 - 19
Physical and chemical characteristics of the Blue Nile and the White Nile at Khartoum Faisal SinadaA. G. Abdel Karim OriginalPaper Pages: 21 - 32
A faunistic reconnaissance of Lakes Kundi and Keilak, western Sudan J. GreenA. I. el MoghrabyO. M. M. Ali OriginalPaper Pages: 33 - 44
A note on some investigations carried out in the area of the Sudan Plain to be affected by the Jonglei Canal OriginalPaper Pages: 45 - 46
A quantitative study of the phytoplankton in the Blue and White Niles at Khartoum Faisal SinadaA. G. Abdel Karim OriginalPaper Pages: 47 - 55
Primary production and respiration of the phytoplankton in the Blue and White Niles at Khartoum Faisal SinadaA. G. Abdel Karim OriginalPaper Pages: 57 - 59
Effects of 2,4-D on mature and juvenile plants of water hyacinth (Eichornia crassipes (Mart.) Solms) F. F. BebawiB. F. Mohamed OriginalPaper Pages: 91 - 93
Observations on the effect of the weevils Neochetina eichhorniae Warner and Neochetina bruchi Hustache on the growth of water hyacinth M. O. BashirZ. E. El AbjarN. S. Irving OriginalPaper Pages: 95 - 98
Mineral nutrient demands of the water hyacinth (Eichhornia crassipes (Mart.) Solms) in the White Nile Lufti A. Desougi OriginalPaper Pages: 99 - 108
Ecological observations on mangroves of the Red Sea shores of the Sudan Babiker F. Mohamed OriginalPaper Pages: 109 - 111
Bogidiella nubica n. sp. from interstitial waters of the Sudan (Crustacea: Amphipoda) Sandro Ruffo OriginalPaper Pages: 131 - 134
The occurrence of Limnohalacarus (Acari: Halacaridae) in Lake No, White Nile J. Green OriginalPaper Pages: 135 - 136
On the freshwater ostracods (Crustacea, Ostracoda) of the Sudan, with special reference to the Red Sea Hills, including a description of a new species Koen Martens OriginalPaper Pages: 137 - 161
Cladocera from the Sudan: Red Sea Hills, Jebel Marra and valley of the main Nile Henri J. DumontJeannine PensaertAsim I. el Moghraby OriginalPaper Pages: 163 - 169
Nilobathynella predynastica n.g., n.sp. (Crustacea:Bathynellacea) from the Nile valley in Nubia Henri J. Dumont OriginalPaper Pages: 171 - 175
Parapseudoleptomesochra attirei n.sp., a new species of Nitocrella from Nubia (Copepoda, Harpacticoida) Henri J. Dumont OriginalPaper Pages: 177 - 180
Dragonflies (Insecta, Odonata) from the Red Sea Hills and the main Nile in Sudan Henri J. DumontKoen Martens OriginalPaper Pages: 181 - 190
The calanoid copepods of the Nile system Hans M. VerheyeHenri J. Dumont OriginalPaper Pages: 191 - 212
Food and food selection of the Penaeid prawn Penaeus monodon (Fabricius) E. A. El Hag OriginalPaper Pages: 213 - 217
Ring formation and annual growth in Corbicula consobrina Caillaud, 1827 (Bivalvia, Corbiculidae) A. I. el MoghrabyM. E. Adams OriginalPaper Pages: 219 - 225
The invasion of Biomphalaria pfeifferi by Schistosoma mansoni miracidia and the development of daughter sporocysts Ahmed BabikerMutamad A. AminAlan Fenwick OriginalPaper Pages: 227 - 233
Location of Biomphalaria pfeifferi by Schistosoma mansoni miracidia in stagnant and running water under field conditions Ahmed BabikerAlan FenwickMutamad A. Amin OriginalPaper Pages: 235 - 240
Feeding and growth of the pearl oyster Pinctada margaritifera (L.) in Dongonab Bay, Red Sea Dirar H. Nasr OriginalPaper Pages: 241 - 245
Aquatic snails of the Jonglei region, southern Sudan, and transmission of trematode parasites D. S. BrownT. FisonC. A. Wright OriginalPaper Pages: 247 - 271
The food and growth of pelagic 0+ Alestes nurse (Characidae) from the Blue Nile, near Khartoum S. A. Guma'aM. Yassin OriginalPaper Pages: 273 - 279
Use of the frontal bone in age determination of Labeo horie (Pisces, Cyprinidae) in Jebel Aulia Reservoir, Sudan A. Abd el RahmanA. I. el Moghraby OriginalPaper Pages: 281 - 286
Seasonal abundance, breeding and sex-structure of populations of Tilapia nilotica (L.) and Labeo niloticus (F.) in the Jebel Aulia Dam area of the White Nile M. M. Babiker OriginalPaper Pages: 287 - 294
Aspects of the biology of the catfish Clarias lazera (Cuv. & Val.) related to its economic cultivation M. M. Babiker OriginalPaper Pages: 295 - 304
Gill net selectivity in Lake Nubia fisheries M. T. AliY. B. Abu-Gideiril OriginalPaper Pages: 315 - 317
Breeding of Barbus bynni (Pisces, Cyprinidae) in Jebel Aulia Reservoir, Sudan A. Abd el RahmanA. I. el Moghraby OriginalPaper Pages: 319 - 325
Food and feeding habits of Labeo niloticus (Pisces, Cyprinidae) in Jebel Aulia Reservoir, Sudan A. I. el MoghrabyA. Abd el Rahman OriginalPaper Pages: 327 - 332
On the reliability of the growth rings in two species of the family Characidae in the Sudan S. A. Guma'aM. E. HamzaE. M. Suliman OriginalPaper Pages: 333 - 338
Adaptive respiratory significance of organophosphates (ATP & GTP) in air-breathing fishes M. M. Babiker OriginalPaper Pages: 339 - 349
Development of dependence on aerial respiration in Polypterus senegalus (Cuvier) M. M. Babiker OriginalPaper Pages: 351 - 363
