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Cane Toad - Coggle Diagram
Cane Toad
Ecological Niche within Kakadu National Park
Ground dwelling
Diet
Insects
Snails
Spiders
Small frogs
Reptiles
Mammals
other cane toads
Nocturnal species
Require constant water source
Absorbed through skin
Produce toxins secreted from top of body
Reduces population of native species
Ecosystem
Kakadu National Park
Savannah Woodlands
Biotic
Flora
Eucalyptus
Sand palm
Green Plum
Fauna
Northen quolls
Gould's Goanna
Dingos
Abiotic
Weather
Summer
humid and wet
Winter
cold and dry
Climate
Typically warm conditions
Water Avaliablity
Summer
Plentiful
Ideal conditions for cane toads
Winter
Dry and scarce
Impacts of Cane toads on organisms
Competition
Compete with native species
Food
Habitat
Toxins
Kills native fauna which consumes it
Population decline of many consumers
Northern quolls
Excreted from top of head
Adaptations due to exposure to toxins
Red Bellied black snake
Physical change
Head reduced in size to not fit cane toads
Black Kites
Behavioural Change
Target the tongue of the toad and avoid toxic areas
Selection pressures acting on Cane toads
Season / climate
Dry Climates
Lack of water source
Behavioural change
Cause Cane toads to be active during the day
Normally nocturnal
Kakadu National Park in Winter
Sunlight
Cause Cane toads to seek shelter during the day
maintaining hydration
Flooded conditions
Absorbtion of too much water
Causes death
Expansion across Australia
Introduced in 1935 in Queensland
102 introduced Cane toads
Estimated population of 200 million
Able to breed year round
Lay 30000 eggs at a time
Physical Change
Evolved longer and stronger legs
Able to travel longer distances faster
Reach water sources
Produce offspring with these traits