Articles by Author: Pd Cowley

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  1. First records of the longnose spiny dogfish <em>Squalus blainvillei</em> (Squalidae) and the deep-water stingray <em>Plesiobatis daviesi</em> (Urolophidae) from South African waters

    First records of the longnose spiny dogfish <em>Squalus blainvillei</em> (Squalidae) and the deep-water stingray <em>Plesiobatis daviesi</em> (Urolophidae) from South African waters

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Deep-set longline investigations of the slope waters off northern KwaZulu-Natal on the east coast of South Africa confirmed the first records of the longnose spiny dogfish Squalus blainvillei (Squalidae) and the deep-water stingray Plesiobatis daviesi (Urolophidae) from South African waters.
  2. The role of the Tsitsikamma National Park in the management of four shore-angling fish along the south-eastern Cape coast of South Africa

    The role of the Tsitsikamma National Park in the management of four shore-angling fish along the south-eastern Cape coast of South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The role of the Tsitsikamma National Park (TNP) in the management of four important shore-angling fish (Diplodus sargus capensis, Diplodus cervinus hottentotus, Pachymetopon grande and Dichistius capensis) was evaluated using data obtained from two independent studies conducted over a similar...
  3. A preliminary investigation of the feeding ecology of skates (Batoidea: Rajidae) off the west coast of southern Africa

    A preliminary investigation of the feeding ecology of skates (Batoidea: Rajidae) off the west coast of southern Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The diets of 14 species of skates (Rajiformes: Rajidae) collected along the coast of South-Western Africa between Walvis Bay and Cape Agulhas over a depth range of 50–1 016 m were analysed. Two distinct communities of skates could be recognized...
  4. Distribution of offshore demersal cartilaginous fish (Class Chondrichthyes) off the west coast of southern Africa, with notes on their systematics

    Distribution of offshore demersal cartilaginous fish (Class Chondrichthyes) off the west coast of southern Africa, with notes on their systematics

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The geographic and the bathymetric distribution of offshore demersal cartilaginous fish off the west coast of southern Africa are reviewed. The results were collected during 12 cruises of F.R.S. Africana between 1986 and 1990. The area covered was between Walvis...
  5. A preliminary investigation of the feeding ecology of squaloid sharks off the west coast of southern Africa

    A preliminary investigation of the feeding ecology of squaloid sharks off the west coast of southern Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The diets of 15 species of squaloid sharks caught between Walvis Bay and Cape Agulhas over a depth range of 50–1 016 m are analysed. The most common prey items were fish and cephalopods. Hake Merluccius spp. were common in...
  6. The feeding ecology of skates (Batoidea: Rajidae) off the Cape south coast, South Africa

    The feeding ecology of skates (Batoidea: Rajidae) off the Cape south coast, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Six species of skates were trawled commonly on the continental shelf off the Southern Cape during routine surveys of demersal fish between 1986 and 1990. Raja miraletus is a small skate found principally in shallow (<50 m) water that feeds...
  7. A taxonomic re-evaluation of the blue stingray from southern Africa (Myliobatiformes: Dasyatidae)

    A taxonomic re-evaluation of the blue stingray from southern Africa (Myliobatiformes: Dasyatidae)

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The taxonomic status of the southern African stingray usually referred to Dasyatis pastinaca was investigated. Morphological comparisons were made between specimens of the European Dasyatis pastinaca (Linnaeus 1758), Dasyatis marmorata (Steindachner 1892) from Senegal (Senegambia), and the blue stingray from...
  8. A preliminary investigation of the feeding ecology of catsharks (Scyliorhinidae) off the west coast of southern Africa

    A preliminary investigation of the feeding ecology of catsharks (Scyliorhinidae) off the west coast of southern Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The diets of six species of catsharks (Carcharhiniformes: Scyliorhinidae) caught between Walvis Bay and Cape Agulhas at depths between 50 and 1 016 m were analysed. The most common prey items were teleosts and crustaceans. Lanternfish (Myctophidae) were common in...
  9. Age and growth of the blue stingray <em>Dasyatis chrysonota chrysonota</em> from the South-Eastern Cape coast of South Africa

    Age and growth of the blue stingray <em>Dasyatis chrysonota chrysonota</em> from the South-Eastern Cape coast of South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The age and growth of blue stingray Dasyatis chrysonota chrysonota from the south-east coast of South Africa was investigated by examination of bands on the vertebral centra. The annual nature of band deposition was verified by centrum edge characteristics and...