Articles by Keyword: Population Genetics

Search results for Population Genetics

We found 198 results for you
  1. Genetic and morphological variation of the lanternfish <em>Lampanyctodes hectoris</em> (Myctophiformes: Myctophidae) off southern Africa

    Genetic and morphological variation of the lanternfish <em>Lampanyctodes hectoris</em> (Myctophiformes: Myctophidae) off southern Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Genetic and morphological variation within the southern African population of Lampanyctodes hectoris was analysed. A total of 15 enzymes, encoding 22 isozyme loci, was examined (n = 327); seven were polymorphic. The percentage of polymorphic loci ranged from 13.6 to...
  2. Catchments as conservation units for riverine biodiversity

    Catchments as conservation units for riverine biodiversity

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The geological structure and longitudinal nature of river systems provide a possible barrier to the dispersal of lotic organisms. This has the potential to drive evolutionary processes such as genetic differentiation and subsequent allopatric speciation. In the conservation of lotic...
  3. Bayesian analysis of allozyme markers indicates a single genetic population of kingklip <em>Genypterus capensis</em> off South Africa

    Bayesian analysis of allozyme markers indicates a single genetic population of kingklip <em>Genypterus capensis</em> off South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    Kingklip Genypterus capensis inhabit deep continental shelf and slope waters off southern Africa and are now largely harvested as a bycatch in trawl and longline fisheries for Cape hakes Merluccius spp. Regional differences in growth, vertebral count and otolith morphology...
  4. Significant population genetic structuring of the holoplanktic scyphozoan <em>Pelagia noctiluca</em> in the Atlantic Ocean

    Significant population genetic structuring of the holoplanktic scyphozoan <em>Pelagia noctiluca</em> in the Atlantic Ocean

    Item type: Journal Article • Journal: African Journal of Marine Science
    Pelagia noctiluca is thought to have a global distribution, yet our understanding of genetic connectivity across the range of this problem animal is poor. Here, we investigate the genetic structure of populations off southern Africa using mitochondrial COI and nuclear...
  5. Cryptic lineages of little free-tailed bats, <em>Chaerephon pumilus</em> (Chiroptera: Molossidae) from southern Africa and the western Indian Ocean islands

    Cryptic lineages of little free-tailed bats, <em>Chaerephon pumilus</em> (Chiroptera: Molossidae) from southern Africa and the western Indian Ocean islands

    Item type: Journal Article • Journal: African Zoology
    We investigate mitochondrial DNA and craniometric variation in southern African and Malagasy populations of the small and morphologically variable, house-roosting molossid bat, Chaerephon pumilus in relation to Malagasy populations of the related, smaller-sized species, C. leucogaster. Both cytochrome b and...
  6. Microsatellite markers for population genetic studies of the rock firefinch, <em>Lagonosticta sanguinodorsalis</em>

    Microsatellite markers for population genetic studies of the rock firefinch, <em>Lagonosticta sanguinodorsalis</em>

    Item type: Journal Article • Journal: African Zoology
    We identified the first set of microsatellites for use in the rock firefinch (Lagonosticta sanguinodorsalis). First, we tested existing passerine microsatellite loci for cross-species amplification success in a small sample of rock firefinches and identified 10 loci that were seemingly...
  7. Genetic variation in three&gt; <em>Chersina angulata&gt;</em> (angulate tortoise) populations along the west coast of South Africa&gt;

    Genetic variation in three&gt; <em>Chersina angulata&gt;</em> (angulate tortoise) populations along the west coast of South Africa&gt;

    Item type: Journal Article • Journal: African Zoology
    We investigated genetic variation within and among three populations of Chersina angulata; two in the southwestern Cape (West Coast National Park and Dassen Island) of South Africa and Kleinzee in the northwestern parts of the species’ range. Mitochondrial DNA sequences...
  8. Mitochondrial DNA sequence variation in <em>Hippopotamus amphibius</em> from Kruger National Park, Republic of South Africa

    Mitochondrial DNA sequence variation in <em>Hippopotamus amphibius</em> from Kruger National Park, Republic of South Africa

    Item type: Journal Article • Journal: African Zoology
    Populations of Hippopotamus amphibius have declined throughout Africa in recent years, and are expected to decline further. An understanding of the population genetics of individual populations of hippos is necessary for effective management. To that end, we sequenced a portion...
  9. Characterisation of microsatellite markers in the Spotted Sand Lizard (<em>Pedioplanis lineoocellata</em>) shows low levels of inbreeding and moderate genetic diversity on a small spatial scale

    Characterisation of microsatellite markers in the Spotted Sand Lizard (<em>Pedioplanis lineoocellata</em>) shows low levels of inbreeding and moderate genetic diversity on a small spatial scale

    Item type: Journal Article • Journal: African Journal of Herpetology
    Population genetic methods can be useful for understanding spatial genetic patterns, gene flow and diversity. While genetic markers such as gene sequences are useful for understanding broad scale phylogeographic patterns, microsatellite markers allow for inferences within species and on smaller...
  10. Analysis of genetic diversity in Rose’s mountain toadlet (<em>Capensibufo rosei</em>) using novel microsatellite markers

    Analysis of genetic diversity in Rose’s mountain toadlet (<em>Capensibufo rosei</em>) using novel microsatellite markers

    Item type: Journal Article • Journal: African Journal of Herpetology
    On the Cape Peninsula, Capensibufo rosei is known from only two isolated breeding populations within Table Mountain National Park. Because of its declining state, there is an urgent need to understand the genetic diversity, population structure and patterns of movement...