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samenvatting leidraad hoofdstuk 8 amphibia $6.32   Add to cart
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samenvatting leidraad hoofdstuk 8 amphibia

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  • Diversiteit van de gewervelde dieren
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  • Universiteit Hasselt (UHasselt)

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  • February 14, 2024
  • 1
  • 2022/2023
  • Summary

Subjects

  • amphibia

Written for

  • Universiteit Hasselt (UHasselt)
  • Bachelor Biologie
  • Diversiteit van de gewervelde dieren
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VIII. Salamanders, kikkers en wormsalamanders

10.1. Amphibiën

 Tetrapoden met een vochtige en schubloze huid
 3 evolutionaire lijnen
o Anurans (kikkers)
o Urodeles (salamanders)
o Gymnophionans (wormsalamander)
 4 goed ontwikkelde ledenmaten
 Salamanders lange staart, wormsalamanders zeer korte staart en kikkers geen staart
 Elks een specifieke aanpassing aan motoriek
 Vochtige, doorlaatbare huid
 Salamanders
o 4 goed ontwikkelde ledenmaten
o Bewegen dr laterale plooiing (zoals vissen)
o Zelfde spieren als vissen
o Aquatische larve  verlies vn kieuwen tijdens metamorfose
o Neotenie: behoud vn larvale kenmerken
 Behoud vn kieuwen
 Speciale omstandigheden meestal
o Soorten in grotten meestal geen ogen en behoud vn kieuwen
o Terrestrische soorten behouden enkele kenmerken vn aquatische soorten, maar ademen dr huid
 Kikkers en padden
o Lichaam gespecialiseerd vr het springen
o Geenstaarten
o Sterk ontwikkelde achterpoten met zeer gespierde dijbenen
o Kikkers vr aquatische soorten
o Padden vr terrestrische soorten
o Grote vingertoppen vr het plakken aan bomen
 Wormsalamanders
o Gereduceerde ogen bedekt dr huid of bot
o Soms ogen volledig afwezig
o Uitsteekbare tentakels
o

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