• Scientific results of the Cambridge Expedition to the East African Lakes, 1930-1: 8. Hydracarina.

      Lundblad, O. (1932)
      This interesting little species does not fit well into any of the subgenera hitherto established, the frontal shield being differently shaped according to sex. In this respect the species resembles somewhat H . mertoni Walt. from the Aru Islands.
    • Scientific results of the Cambridge Expedition to the East African Lakes, 1930-1: 1. General introduction and station list.

      Worthington, E. (1932)
      The Cambridge Expedition to thc East African lakes was orgnnised in 1930 to continue limnological investigations in Kenya, and Uganda. The early African lake expeditions at the beginning of the century concentrated on Lake Tanganyika, but made collections of the fauna and flora of Lakes Victoria, Edward, Albert, etc., and other collections have been brought to European museums by individual collectors. A summary of knowledge up to date was given by Dr. Cunnington (1921), but since that time the sciences of limnology and ecology -have undergone considerable development and we are now able to approach the problems from a somewhat different standpoint,considering the animals and plants in relation to their physical and biological environments, and attacking problems of geographic distribution with a sounder backing from geology.
    • Scientific results of the Cambridge Expedition to the East African Lakes, 1930-1.- No. 16. The smaller Crustacea.

      Lowndes, A.G. (1936)
      The following paper represents the result of the identification of the species of Cladocera, Copepoda, and Ostracoda.
    • Chemical Factors Limiting Growth of Phytoplankton in Lake Victoria.

      Fish, G.R. (1956)
      Investigations on the problem of phytoplankton productivity in the waters of Lake Victoria have been pursued since 1949. Observations from the shallow bays and inlets showed that no annual cycle of phytoplankton occurred. In view of the favourable climatic conditions found in this area, factors limiting growth of phytoplankton were sought in the form of deficiencies in chemical nutrients dissolved in the water.
    • The Cowries of the East African coasts: Supplement II.

      Verdcourt, B. (1959)
      All the species known to occur on our coasts are included in this present paper.
    • Breeding Studies on Tilapia Zillii and Tilapia Nigra.

      Cridland, C. (East African Freshwater Fishery Research OrganizationJinjga, Uganda, 1961)
      Broods were recorded from seven pairs of T. zilli which had been reared from previous experiments in the laboratory, observations on these being made for a period of 19 months.
    • Preliminary notes on the relationship between Feeding and Growth Rate in the Siluroid Fish Bagrus docmac (Forsk).

      Elder, H.Y. (East African Freshwater Fishery Research Organization,Jinja, Uganda, 1961)
      Experiments were begun in April to clarify the relationship between Bagrus and its main prey in the natural environment of L. Victoria, the cichlid fish of the genus Haplochromis. Some of the results of the first two parts of these experiments, the relationship between size and basic food requirement and between feeding rate and growth rate are discussed in more detail in this appendix.
    • River Fish Migration.

      Van Someren, V. (East African Freshwater Fishery Research OrganizationJinja, Uganda, 1961)
      For the last four years an inclined grid trap has been maintained on the Ragati River which flows through the Sagana Fishery Research Station in Kenya. For a number of reasons, mainly financial, it was not possible to make this trap operable at full efficiency throughout the flood period of every year since it was constructed in 1958, nor has the part for trapping upstream migrants been entirely successful. However, it has now been possible to collate all data collected so far on the migration of fish at this trap, and the full results are being published elsewhere.
    • Report on Limnological Work during a Visit to EAFFRO between, August 1980, and September 1961

      Talling, J. (East African Freshwater Fishery Research OrganizationJinja, Uganda, 1961)
      Work has been carried out on several aspects of algal productivity in Lake Victoria waters, in relation to a background of physical and chemical Limnology. Routine sampling of the offshore waters of Lake Victoria was maintained as the most detailed approach, but the collection of comparative data from other waters was made.
    • Pond Culture Studies on Tilapia Nigra.

      Van Someren, V. (East African Freshwater Fishery Research OrganizationJinja, Uganda, 1961)
      The culture of T. nigra in ponds is best effected monosex methods, in order to obtain yields of fish a1l of a uniformly large size after a period of time. It is usual to grow males only, stocking them on a basis of sex separation carried out either by genital examination of immature fish, or on colour of the pelvic fin in mature fish taken from a mixed stock pond, The technique and subsequent growth features have been fully described.
    • Nile Perch Investigation.

      Hamblyn, E. (East African Freshwater Fishery Research OrganizationNairobi, Kenya, 1961)
      The more important findings are noted below in general terms while a detailed account of the biology of Lates will be published elsewhere.
    • A Note on Lake Rudolf.

      Hamblyn, E. (East African Freshwater Fishery Research OrganizationJinja, Uganda, 1961)
      In January a further expedition was made to Lake Rudof with the help and co-operation of the Kenya Department of Game Forest and Fisheries. Four days were spent at Loyongalani and experimental fishing was done in El Molo Bay a few miles to the north of the camp.
    • Buoy Release Trials.

      Roberts, J. (East African Freshwater Fishery Research OrganizationJinja, Uganda, 1961)
      Trials with the two types of links supplied by E.A.Industrial Research Organization and using sealed one gallon cans as floats produced results as follows.
    • Further notes on the biology of East African pelagic fishes of the families Carangidae and Sphyraenidae.

      Williams, F. (1965)
      In a previous paper (Williams, 1956) reporting on the 1951-1954 preliminary survey of the pelagic fishes of the area, the biology of these fishes was but briefly discussed. For various reasons detailed biological work on those species of economic importance did not take place. However, from 1954 to 1960, further routine observations were made on all catches of pelagic fishes taken during, cruise of R.V. Research and later R.V. Manihine. Even after nine years' work the number of specimens of even the commonest species, was still very small and only limited information on the biology of the species was forthcoming.
    • Rhinoptera javanica Muller & Henle from Kenya waters (pisces : Rhinopteridae).

      Loose, G.F. (1966)
      Rays of the family Rhinopteridae, commonly known as cow or bull rays, are rare in East African waters. Few are caught and none have been recorded previously by the East African Marine Fisheries Research Organization in Zanzibar. It was therefore of interest when two specimens of Rhinoptera javanica Muller & Henle were caught in a shark tangle-net set at the edge of a coral reef off Kikambala, Mombasa district, in March 1965. One of these specimens was purchased and is described below.
    • The Status of the Dugong (Dugong dugon Muller); Kenya, 1961.

      Jarman, P.J. (1966)
      The scarcity of dugong (Dugong dugon Muller) throughout their former range and lack of knowledge of the species' ecology justifies this record of the opinions of the fishermen in the Lamu district of Kenya, where the species is still plentiful. The area and the programme of questioning are described. The social life, reproduction, movements and predators of the dugong are recorded as reported by the fishermen. The present distribution is contrasted with the past. My observations on the food plants and their distribution are given, as well as the fishermen's estimation of the part each plays in the dugong's diet. The need for calm water over feeding grounds, afforded by depth of water or shelter from winds, seems to be a controlling factor in the distribution of dugong. Man appears to be the main predator.
    • Check List of Elopoid and Clupeoid Fishes in East African Coastal Waters.

      Losse, G.F. (1966)
      Twenty-one species, representing seven families are listed here; four not previously published distributional records.
    • Marine botany of the Kenya coast. 1. A First List of Kenya Marine Algae.

      Isaac, W.E. (1967)
      The following groups of marine algae were collected along the Kenya coast:Chlorophyceae; (Ulotrichales); Siphonales (Siphonocladales, Dasycladales); Phaeophyta (Ectocarpales, Dictyotales, Punctariales, Fucales); Rhodophyta (Nemalionales, Gelidiales, Cryptonemiales, Gigartinales, Rhodymeniales, Ceramiales). Brief descriptions are given, and the classification discussed.
    • Weight-Length Relationships for Certain Scombroid Fishes from the Equatorial Western Indian Ocean.

      Merrett, N.R. (1968)
      The East African Marine Fisheries Research Organization (E.A.M.F.R.O.) is at present conducting a tuna longline survey in the equatorial western Indian Ocean. During this survey, which began in September 1964. The weights and lengths of all specimens of scombroid species caught have been recorded. Sufficient data have now been collected from three species of tuna and two species of billfish to enable the calculation of reliable weight-length relationships. The species of tuna considered are the yellowfin, Thunnus albacares (Bonnaterre), albacore. Thunnus alalunga (Bonnaterre) and skipjack, Euthynnus pelamis (Linnaeus). The billfish examined were the striped marlin. Tetrapterus audax Phillipi and the sailfish, Istiophorus gladius (Bloch).
    • Marine botany of the Kenya coast. 4. Angiosperms.

      Isaac, W.E. (1968)
      The following groups of marine algae were collected along the Kenya coast: Cymodocea serrulata;Zostera capensis;Cymodocea Konig;Cymodocea ciliata;Cymodocea serrulata;Cymodocea rotundata ;Syringodium Kuetz;Syringodium isoetifolium;Halodule uninervis;Halodule wrightii;Halodule ovalis; Halodule minor; Halodule balfourii;Enhalus acoroides. Brief descriptions are given, and the classification discussed.