Supriya Ghosh (Editor)

Curassow

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Kingdom  Animalia
Order  Galliformes
Higher classification  Cracidae
Phylum  Chordata
Scientific name  Cracinae
Rank  Subfamily
Curassow Great curassow Wikipedia
Lower classifications  Crax, Helmeted curassow, Alagoas curassow, Razor‑billed curassow, Nocturnal curassow

Yellow knobbed curassow singing


Curassows are one of the three major groups of cracid birds. Three of the four genera are restricted to tropical South America; a single species of Crax ranges north to Mexico. They form a distinct clade which is usually classified as the subfamily Cracinae.

Contents

Curassow Curassow
  • Genus Nothocrax
  • Nocturnal curassow, Nothocrax urumutum
  • Genus Mitu
  • Crestless curassow, Mitu tomentosum
  • Alagoas curassow, Mitu mitu - extinct in the wild (mid-late 1980s)
  • Salvin's curassow, Mitu salvini
  • Razor-billed curassow, Mitu tuberosum
  • Genus Pauxi – Helmeted curassows
  • Helmeted curassow, or Northern Helmeted Curassow Pauxi pauxi
  • Horned curassow or Southern Helmeted Curassow, Pauxi unicornis
  • Sira curassow, Pauxi koepckeae
  • Genus Crax
  • Great curassow, Crax rubra
  • Blue-billed curassow, Crax alberti
  • Yellow-knobbed curassow, Crax daubentoni
  • Wattled curassow, Crax globulosa
  • Red-billed curassow Crax blumenbachii
  • Bare-faced curassow, Crax fasciolata
  • Black curassow, Crax alector

  • Curassow antpittacom Photo Gallery Guans Curassows and Chachalacas

    Curassows from tropical south america black curassow crax alector


    Evolution

    Curassow Black curassow Wikipedia

    In line with the other 3 main lineages of cracids (chachalacas, true guans, and the horned guan), mt and nDNA sequence data indicates that the curassows diverged from their closest living relatives (probably the guans) at some time during the Oligocene, or c.35–20 mya (Pereira et al. 2002). This data must be considered preliminary until corroborated by material (e.g. fossil) evidence however.

    Curassow Great Curassow Crax rubra male the Internet Bird Collection

    What appears certain from analysis of the molecular data, calibrated against geological events that would have induced speciation is that there are 2 major lineages of curassows: one containing only Crax, and another made up of Mitu and Pauxi. The position of the peculiar nocturnal curassow is not well resolved; it might be closer to the latter, but in any case, it diverged around the same time as the split between the two major lineages. All curassow genera appear to have diverged, in fact, during the Tortonian (early Late Miocene): the initial split took place some 10–9 mya, and Pauxi diverged from Mitu some 8–7.4 mya (but see genus article).(Pereira & Baker 2004)

    Curassow 1000 images about curassow guan cracidae on Pinterest

    Unlike the other cracids, biogeography and phylogeny indicate that the extant lineages of curassows probably originated in the lowlands of the western/northwestern Amazonas basin, most likely in the general area where today, the borders of Brazil, Peru, Colombia and Venezuela meet. In the two larger genera, vicariant speciation seems to have played a major role.(Pereira et al. 2002, Pereira & Baker 2004)

    Curassow httpsuploadwikimediaorgwikipediacommonsthu

    References

    Curassow Wikipedia


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