Cheilobarbus serra (Peters, 1864) Recherche rapide

Attributs

  • DISTRIBUTION: Lien Faunafri
  • Colour pattern : Skelton, 1993b | Skelton, 2001 .
  • Common names : Saagvin (Afrikaans), Parma olifatska (Czech), Clanwilliam sawfin / Sawfin (English), Saaguim-pardkala (Estonian) .
  • Condition / length-weight relationship : Paxton et al., 2002 .
  • Current distribution known : endemic to the Olifants-Doring River System, Western Cape Province, South Africa. The species was originally widespread in the system, inhabiting both mainstream and tributary areas. The introduction of Smallmouth Bass in the 1940s, and its subsequent invasion and establishment in mainstream environments, caused recruitment collapse of the species. This resulted in localized extirpation of this species from the middle and lower Olifants River and from several tributaries prior to the 1970s.Recent surveys have revealed new subpopulations in the Dwars, Boschkloof, Eselbank and Langkloof rivers and Beaverlac Dam (translocated population) on the Ratels Catchment. There are at least 13 subpopulations present, five in the Olifants Catchment area (Olifants Gorge - Boschkloof River, Dwars River, Ratels River, Beaverlac Dam in Ratels Catchment and Jan Dissels River) and eight in the Doring Catchment Area (Gif, Oorlogskloof, Biedouw, Tra-tra, Eselbank, Driehoek-Matjies, Langkloof) and an extra-limital one in an artificial impoundment at Bushmanskloof Nature Reserve .
  • Distribution_references : Paxton, 2008 | Paxton et al., 2002 | Skelton, 1993b | Skelton, 2001 .
  • External factors : Shelton et al., 2018 .
  • Food habits / trophic level : it is omnivorous, feeding primarily on aquatic insects .
  • Food habits / trophic level_references : Paxton, 2008 | Skelton, 1993b | Skelton, 2001 .
  • Genetics : Machordom & Doadrio, 2001a | Schedel et al., 2022 | Skelton et al., 2018 | Tsigenopoulos et al., 2002 | Yang et al., 2015 .
  • Growth / growth performance : Mérona et al., 1988 | Paxton, 2008 | Paxton et al., 2002 .
  • Habitat / home range : juveniles are primarily pool dwellers of foothill river zones whereas adults prefer larger, deeper pools in transitional zones of rivers .
  • Habitat_references : Paxton, 2008 | Paxton et al., 2002 | Skelton, 1993b | Skelton, 2001 .
  • Introduction_references : Ellender & Weyl, 2014 .
  • Migration / movement : Paxton, 2008 .
  • Morphology / anatomy : Paxton, 2008 | Skelton, 1993b | Skelton, 2001 | Skelton et al., 2018 .
  • Osteology : Ellender & Weyl, 2014 .
  • Phylogeny : Hayes & Armbruster, 2017 | Machordom & Doadrio, 2001a | Schedel et al., 2022 | Skelton et al., 2018 | Tsigenopoulos et al., 2002 | Yang et al., 2015 .
  • Reproduction : breeds from late spring (October) to summer (December), with small schools of adults gathering over cobble beds in shallow riffles. It is a repeat spawner and also a multiple spawner. It is likely that the species also breeds in dams with rocky shoreline habitat as a recruiting subpopulation is present in Beaverlac Dam which lacks a suitable in-flowing river .
  • Reproduction_references : Paxton, 2008 | Skelton, 1993b | Skelton, 2001 .
  • Size : up to 180 mm TL .
  • Speciation : Machordom & Doadrio, 2001a .
  • Types :
    • Barbus serra Peters, 1864: 394. Type locality: "Cape of Good Hope". Holotype ZMHU n° 3451.
  • Zoological_nomenclature / taxonomic information : Skelton et al., 2018 .