Growling Grass Frog Litoria raniformis
Vulnerable Nationally Flora & Fauna Guarantee listed
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Description
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A large bright green frog (up to 100mm). The belly is white and the groin and armpits are tinged blue. The call is a loud growling waaarrrk! ah! ah! ah! wa!
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Habitat needs
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- Dams and pools that retain water in early summer are needed for breeding.
- Aquatic vegetation for basking is ideal but tall, dense reeds may become too shady.
- The frogs use drystone walls and logs to shelter under in cool and dry weather.
- Good breeding populations of prey species.
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Threats
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- This species is Nationally Endangered and vulnerable in Victoria.
- Loss or degradation of wetland habitat including silt and pollution runoff.
- Loss of foraging areas around the wetlands.
- Clearing of rocks and logs in areas surrounding breeding sites.
- Use of herbicides and pesticides.
- Predation on eggs and tadpoles by introduced fish; Redfin, Carp and Mosquito Fish.
- Viral, bacterial and fungal diseases.
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Things to note
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- This frog moves hundreds of metres hunting other frogs and large insects.
- Breeding occurs in October-January, eggs are laid in a jelly raft.
- The Merri Creek catchment is an important site for this species’ conservation.
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Things to do
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- Protect wetlands and creeklines on your property by fencing. Dense pasture grasses can hinder frog movement and hunting so some periodic grazing may be useful.
- Encourage aquatic plants like Water-ribbons and Pondweeds.
- Retain areas of boulders, drystone walls and logs near wetlands.
- Limit the movement of water plants or mud between wetlands to avoid spreading disease or Mosquito fish.
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