Articles by Keyword: Taxonomy

Search results for Taxonomy

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  1. Principles of soil classification and the future of the South African system

    Principles of soil classification and the future of the South African system

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Humans classify their environment to create order, make it understandable, aid recollection and to communicate. The nature of these classifications is not always understood, because they are learnt from an early age. Building on these principles provides a sound basis...
  2. A new species of electric ray of the genus <em>Narcine</em> Henle, 1834 from the South-Western Indian Ocean (Chondrichthyes: Torpediniformes: Narcinidae)

    A new species of electric ray of the genus <em>Narcine</em> Henle, 1834 from the South-Western Indian Ocean (Chondrichthyes: Torpediniformes: Narcinidae)

    Item type: Journal Article • Journal: South African Journal of Marine Science
    A new species of electric ray of the genus Narcine Henle, 1834 is described from seven specimens collected from two localities off the western coast of Madagascar, in the Moçambique Channel. Narcine insolita, sp. nov. is distinguished from all other...
  3. FRESHWATER NEMATODES FROM SOUTH AFRICA 3. <em>TOBRILUS</em> ANDRÁSSY, 1959

    FRESHWATER NEMATODES FROM SOUTH AFRICA 3. <em>TOBRILUS</em> ANDRÁSSY, 1959

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    During a survey of freshwater nematodes in South Africa, six species of Tobrilus Andrássy, 1959 were encountered. The six species, four of which are new to science, are described and figured, viz. Tobrilus annetteae, n.sp.; T. heptapapillatus n.sp.; T. stefanskii...
  4. THE SPECIFIC NAME OF THE SNAKE CATFISH, <em>CLAXIAS THEOWRAE</em> WEBER 1897

    THE SPECIFIC NAME OF THE SNAKE CATFISH, <em>CLAXIAS THEOWRAE</em> WEBER 1897

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Workers revising Southern African freshwater fishes have endeavoured to provide brief information on those persons who have had fish named after them. The provenance of all such patronyms in currently valid species has been established with one exception: Clarias theodorae...
  5. ADDITIONS TO THE CHECKLIST AND RECENT CHANGES TO THE SCIENTIFIC NAMES OF SOUTHERN AFRICAN FRESHWATER FISHES

    ADDITIONS TO THE CHECKLIST AND RECENT CHANGES TO THE SCIENTIFIC NAMES OF SOUTHERN AFRICAN FRESHWATER FISHES

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Alterations and additions to the checklist of southern African freshwater fishes are given based on recent findings and the latest literature. Name changes are given for 13 taxa, and 25 species and subspecies are added to the list. Several species...
  6. SOME PLANKTONIC BRACHIONID ROTIFERS FROM SOUTH AFRICAN IMPOUNDMENTS

    SOME PLANKTONIC BRACHIONID ROTIFERS FROM SOUTH AFRICAN IMPOUNDMENTS

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    From a survey of zooplankton samples from 73 South African impoundments, 16 species of rotifers of the family Brachionidae were identified. Of these eight were of the genus Braohionus and four of the genus Keratella. The most frequently encountered brachionid...
  7. REDESCRIPTIONS OF <em>PLACOBDELLA STUHLMANNI</em> (BLANCHARD, 1897) AND <em>PLACOBDELLA GAROUI</em> (HARDING, 1932) (HIRUDINEA: GLOSSIPHONIIDAE)

    REDESCRIPTIONS OF <em>PLACOBDELLA STUHLMANNI</em> (BLANCHARD, 1897) AND <em>PLACOBDELLA GAROUI</em> (HARDING, 1932) (HIRUDINEA: GLOSSIPHONIIDAE)

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    The two African leeches Placobdella stuhlmanni (Blanchard, 1897) and Placobdella garoui (Harding, 1932) are redescribed and figured because of the confusion that exists in the literature with regard to the specific identities of the two taxa. During a survey of...
  8. CAROTENOID COMPOSITION AS TAXONOMIC CHARACTER FOR <em>MICROCYSTIS</em> ISOLATES

    CAROTENOID COMPOSITION AS TAXONOMIC CHARACTER FOR <em>MICROCYSTIS</em> ISOLATES

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Nineteen Microcystis aeruginosa isolates, a Microcystis incerta and a Synechococcus grown under constant conditions were analyzed for pigment composition. The carotenoid composition of Microcystis incerta and a Synechococcus isolate differed markedly from that of the other isolates. Although there were...
  9. DEVELOPMENTS IN TWENTY-FIVE YEARS OF DIATOM (BACILLARIOPHYCEAE) RESEARCH IN SOUTH AFRICA

    DEVELOPMENTS IN TWENTY-FIVE YEARS OF DIATOM (BACILLARIOPHYCEAE) RESEARCH IN SOUTH AFRICA

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Diatom research in South Africa can be divided into four distinct periods. The first period covers a span of some seventy years, beginning with Shadbolt's (1854) account of diatoms from Port Natal, and continuing with brief notes and reports on...