Articles by Author: Pr Teske

Search results for Pr Teske

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  1. The distribution and abundance of the endangered Knysna seahorse <em>Hippocampus capensis</em> (Pisces: Syngnathidae) in South African estuaries

    The distribution and abundance of the endangered Knysna seahorse <em>Hippocampus capensis</em> (Pisces: Syngnathidae) in South African estuaries

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The occurrence, distribution and abundance of the endangered Knysna seahorse Hippocampus capensis in 10 estuaries on South Africa's warm temperate south coast, were investigated. Seahorses were found only in the Knysna, Swartvlei and Keurbooms estuaries. Sex ratios were even and,...
  2. Phylogeographic structure of the caridean shrimp <em>Palaemon peringueyi</em> in South Africa: further evidence for intraspecific genetic units associated with marine biogeographic provinces

    Phylogeographic structure of the caridean shrimp <em>Palaemon peringueyi</em> in South Africa: further evidence for intraspecific genetic units associated with marine biogeographic provinces

    Item type: Journal Article • Journal: African Journal of Marine Science
    Recent genetic studies have shown that most widely distributed, passively dispersing invertebrates in southern Africa have regional intraspecific units that are associated with the three main marine biogeographic provinces (cool-temperate, warm-temperate and subtropical). The caridean shrimp Palaemon peringueyi also occurs...
  3. Larval development reflects biogeography in two formerly synonymised southern African coastal crabs

    Larval development reflects biogeography in two formerly synonymised southern African coastal crabs

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The southern African crab Hymenosoma orbiculare was recently split into five distinct species, of which three are estuarine/coastal and have peripatric distributions that are linked to temperature-defined marine bioregions. This suggests that the species’ ranges may be limited by physiological...
  4. Does the endangered Knysna seahorse, <em>Hippocampus capensis</em>, have a preference for aquatic vegetation type, cover or height?

    Does the endangered Knysna seahorse, <em>Hippocampus capensis</em>, have a preference for aquatic vegetation type, cover or height?

    Item type: Journal Article • Journal: African Zoology
    The Knysna seahorse, Hippocampus capensis, is an endangered teleost confined to three South African estuaries. Its abundance within these systems is low and distributions are patchy. Consequently, monitoring population sizes is labour-intensive. The aim of this study was to establish...
  5. Historical demography of southern African patellid limpets: congruence of population expansions, but not phylogeography

    Historical demography of southern African patellid limpets: congruence of population expansions, but not phylogeography

    Item type: Journal Article • Journal: African Journal of Marine Science
    Global climatic oscillations have shaped the contemporary genetic structure of marine taxa in different ways. Previous demographic studies have indicated that various intertidal marine species display genetic signatures of demographic expansion that either pre- or postdate the Last Glacial Maximum...
  6. A comparison of genetic structure in two low-dispersal crabs from the Wild Coast, South Africa

    A comparison of genetic structure in two low-dispersal crabs from the Wild Coast, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    The Wild Coast in south-eastern South Africa is strongly influenced by the warm, southward-flowing Agulhas Current. This current has a significant impact on dispersal in the coastal biota of the region, and facilitates high levels of connectivity among populations. However,...
  7. Affinities of some common estuarine macroinvertebrates to salinity and sediment type: empirical data from Eastern Cape estuaries, South Africa

    Affinities of some common estuarine macroinvertebrates to salinity and sediment type: empirical data from Eastern Cape estuaries, South Africa

    Item type: Journal Article • Journal: African Zoology
    Fourteen species of subtidal macrobenthos present in thirteen Eastern Cape estuaries, South Africa, were compared with regard to correlations with two important environmental variables (salinity and sediment mud content). Species were divided into five different faunal components based on their...
  8. Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean

    Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean

    Item type: Journal Article • Journal: African Journal of Marine Science
    The penaeid prawns Fenneropenaeus indicus and Metapenaeus monoceros support shallow-water prawn fisheries in the south-west Indian Ocean. They are sympatric and have similar life histories, including developmental stages that depend on estuarine and marine habitats and a short dispersal duration...