Αρχεία Ημερολογίου για Μάρτιος 2021

Μάρτιος 15, 2021

Indigenous fish taxonomy

david_taylor suggested an ID
1y
Pseudobarbus
Redfins
Genus Pseudobarbus
david_taylor commented
1y

@darragh132 Not P. burchelli? Looks like the breede system and I don't think its P. skeltoni
darragh132 commented
1y

@david_taylor According to the taxonomists at SAIAB, P. burchelli (the Barrydale Redfin) is a unique lineage restricted to the Tradouw River catchment north of Swellendam. All Pseudobarbus burchelli in the rest of the system belong to a separate lineage, which is currently being referred to as P. sp nov "burchelli breede" but has no taxonomic authority until a description is published. The same situation is true for the "Cape zebra" Galaxias zebratus, which apparently should only be used to refer to one of two cryptic species restricted to the south-western Cape (there are 9 others across the Cape Fold Ecoregion). @tonyrebelo has already flagged this issue with the iNaturalist taxonomy team, so we will see if these "unique lineages" of redfins can get temporary species status for the purposes of observation reporting on this platform at least, while we wait for the taxonomists to clear their substantial backlog of undescribed lineages
david_taylor commented
1y

@darragh132 thanks for the clarification. I will follow this with interest. Is it Albert who is sorting this out?
darragh132 commented
1y

@david_taylor Yes Albert is slowly working through the Pseudobarbus, Galaxias and some Enteromius groups. I believe he is close to publishing a revision of Enteromius anoplus in the Western Cape, to give the ones found in the Cederberg new species status (he presented his student's work on this at a freshwater conference last year). The Breede Catchment galaxiids and redfins are somewhere further down the queue. There is a recent review paper in Aquatic Conservation that gives an overview of the taxonomic backlog (DOI: 10.1002/aqc.2730)
tonyrebelo commented
1y

Austroglanis barnardi (Skelton, 1981) EN Endemic to Olifants River system, specifically three tributary streams
Austroglanis gilli (Barnard, 1943) VU Endemic to Olifants River system

Enteromius anoplus (Weber, 1897) LC Widely distributed throughout South Africa
Enteromius sp. “pallidus south” LC Widespread across the eastern CFR from the Krom River in the west to the Great Fish River system in the east

Galaxias zebratus Castelnau, 1861 DD Type locality uncertain and requires revision

Galaxias sp. “zebratus Breede” NA Hex, Bothaspruit and mainstem Breede River system
Galaxias sp. “zebratus Goukou” NA Goukou River system
Galaxias sp. “zebratus Heuningnes” NA Heuningnes and Ratel River systems
Galaxias sp. “zebratus Klein” NA Klein, Uilkraals and Ratel River systems
Galaxias sp. “zebratus Mollis” NA Onrus River system and Leeu River, Berg River system
Galaxias sp. “zebratus nebula” NA Widespread across the CFR from the Olifants River system in the west to the Bitou River system in the east
Galaxias sp. “zebratus Rectognathus” NA Amandel and Du Toit Rivers, Riviersonderend sub‐catchment, Breede River system
Galaxias sp. “zebratus Riviersonderend” NA Tributaries of the Riviersonderend River and in the Keurbooms River, Breede River system. Also occurs in the Palmiet River system
Galaxias sp. “zebratus Slender” NA Uilkraals River system

Labeo seeberi Gilchrist & Thompson, 1911 EN Endemic to Olifants River system, specifically (currently) the Doring River main stream
Labeo umbratus (A. Smith, 1841) LC East coast rivers from Gouritz to Bushmans rivers and the Orange/Vaal River system

Labeobarbus seeberi (Gilchrist and Thompson, 1913) CVU Endemic to Olifants River system

Pseudobarbus afer (Peters, 1864) EN Headwater tributaries of the Baakens, Swartkops and Sundays River systems

  1. Pseudobarbus sp. “afer Forest” NT East coast from Klein Brak to Tsitsikamma rivers
  2. Pseudobarbus sp. “afer Gamtoos” EN Headwater tributaries of the Gamtoos River system
  3. Pseudobarbus sp. “afer Krom” CR Headwater tributaries of the Krom River system
    Pseudobarbus asper (Boulenger, 1911) EN Mainstream reaches of the Gamtoos and Gourits River systems
    Pseudobarbus burchelli Smith, 1841 CR Tradouw River, Breede River system

  4. Pseudobarbus sp. “burchelli Breede” NT Headwater tributaries of the Breede, Duiwenhoks and Goukou River systems
  5. Pseudobarbus sp. “burchelli Heuningnes” CR Heuningnes River system
    Pseudobarbus burgi (Boulenger, 1911) EN Endemic to the Berg River system
    Pseudobarbus phlegethon (Barnard, 1938) EN Occurs in the Oudste, Thee, Noordhoeks, Boskloof and Rondegat tributaries of the Olifants River system

  6. Pseudobarbus sp. “phlegethon Doring” CR Breekrans and Driehoeks tributaries of the Doring River, Olifants River system
    Pseudobarbus skeltoni Chakona & Swartz, 2013 NA Limited to two localities within the Breede River system (upper Riviersonderend and Krom rivers)
    Pseudobarbus tenuis (Barnard, 1938) NT Headwater tributaries of the Gouritz River system

  7. Pseudobarbus sp. “tenuis Keurbooms” EN Headwater tributaries of the Keurbooms and Bitou River systems
    Pseudobarbus verloreni Chakona, Swartz & Skelton, 20143 EN Verlorenvlei River system
    ‘Pseudobarbus’ capensis (Smith, 1841) EN Endemic to the Berg and Breede River systems
    ‘Pseudobarbus’ calidus (Barnard, 1938) V Endemic to the Olifants River system
    ‘Pseudobarbus’ erubescens (Skelton, 1974) CR Endemic to the Olifants River system, specifically the Twee River and its tributaries
    ‘Pseudobarbus’ serra (Peters, 1864) EN Endemic to the Olifants River system

Sandelia capensis (Cuvier, 1831) DD Type locality uncertain and requires revision

  1. Sandelia sp. “capensis Breede” NA Tributaries of the Breede, Duiwenhoks and Goukou River systems
  2. Sandelia sp. “capensis Agulhas” NA Heuningnes, Haelkraal and Klein River systems
  3. Sandelia sp. “capensis Klein” NA Klein River system
  4. Sandelia sp. “capensis Koekedou” NA Titus and Koekedou, tributaries of the Breede River system
  5. Sandelia sp. “capensis Riviersonderend” NA Tributaries of the Riviersonderend River, Breede River system
    ludwig_muller commented
    1y

Hi @darragh132 Your info on Enteromius anoplus is most interesting as l have recently discovered what may be a new Enteromius in the Free state. Is the species being split up?
ludwig_muller suggested an ID
1y
Pseudobarbus
Redfins
Genus Pseudobarbus
darragh132 commented
1y

@ludwig_muller Yes the western populations of Enteromius anoplus (including those occurring in Eastern Cape, Northern Cape, Western Cape and Free State) are currently undergoing taxonomic revision at SAIAB, led by a PhD student that is close to submitting. I expect to see the new species descriptions published later this year or in early 2021.

Posted on Μάρτιος 15, 2021 1238 ΜΜ by ludwig_muller ludwig_muller | 0σχόλια | Αφήστε ένα σχόλιο