poisonous animals

Poisonous AnimalsPoison Dart Frog

Origin• Dendrobatidae family

Name origin• Origin of it’s name: used as weapon

Blue Poison Dart Frog• Dendrobates azureus• Few Rain forest island of Southern Suriname

Characteristics• Daily active• Brilliant color, complex patterns• Many are deadly poisonous

Can ClimbPoor swimmer

Characteristics• Size : 1 - 7cm• Weight : few grams• Life time : 3 - 15 years

Its poison• Most poisonous animal in the world• 0.2 µg to kill 1 person• Golden Dart Frog has 200 µg

Poison’s use• Natural defense against predator

Alkaloids• Complex nitrogenous compounds• 24 structural classes known in dart frog

Batrachotoxin• Neurotoxins, a potent nerve poison

Predators• Amazon ground snake

Dietary Hypothesis• Sequester arthropod prey’s toxins

Plant-Insect-Frog toxin food chain• Commun Alkaloids toxins

Alkaloid sequestration• Poison glands

Species with Similar Venom• Hooded Pitohui

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