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Samenvatting NGZ hoofdstuk amfibieën

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Samenvatting NGZ hoofdstuk amfibieën

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Uploaded on
January 17, 2024
Number of pages
15
Written in
2023/2024
Type
Summary

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2.7.5 Diarree
• Aandoeningen GI-stelsel
• Parasitair (importdieren)




o
• Dieetfout, verandering
• Coccidiose




o
• Vreemd vwp
• Te lage T
• Bacterie, virus
• Dysbacteriose
• Lever + nierproblemen
• Niets




o
o Rare vormen, is geen ziekte

, HOOFDSTUK 3: Amfibieën
3.1 Taxonomie + vaak gehouden soorten
• Klasse amphibia
• Orde Anura – kikkers en padden
o 80%
▪ Archaeobactrachia
• Meer primitieve vorm
▪ Neobatrachia
• Meer gespecialiseeerde vorm
• Orde Caudata – salamanders
o Fase in water en/of op land
o Kunnen in juveniel stadia blijven
• Orde Gymnophiona – wormsalander
o Leven in bodem → ontdekken moeilijker
o Amfibieën die lijken op regenworm → maar hebben geen zadel
o Weinig gehouden
o Primitieve groep
• Verspreiding
▪ Kikkers
• Grote verspreiding
o Eerder in tropische gebieden (donkere kleur door grote conc)
▪ Salamanders
• Vooral in vochtig klimaat
o Noordelijk halfrond
▪ Wormsalamanders
• Tropische gebied
o Grote dichtheid in amazone woud
• Amphibian decline - bedreiging natuurlijke populaties
o Sterke daling
▪ Wereldwijd
o Rode bol → uitgestorven soorten
o Oranje → risico op uitsterven
o Oorzaken
▪ Alteratie (verandering), fragmentatie, natuurlijke habitat destructie
▪ Geïntroduceerde speces
▪ Overexploïtatie (landdegradatie door intensieve landbouw)
▪ Klimaatverandering en UVB straling
• Kunnen amfibiën niet goed tegen
▪ Chemische contaminatie
▪ Ziekten
• 1 belangrijke à chitridio mycosis (schimmelinfectie)
▪ Malformaties
• Verstoring DNA en reproductie à misvormde jongen

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