Australian Frogs

Common name: Bibron's Toadlet

Scientific name: Pseudophryne bibronii

Family: Myobatrachidae

Description

This frog is brown to black on its back with darker flecks and occasionally there are red spots. There is a faded yellowish stripe down the middle of the lower back and a bright yellow patch around the cloaca. On the base of each arm there is an orange or yellow patch. The belly is smooth or slightly granular and marbled black and white. The skin on the back is smooth with low warts. The toes are not webbed.

Size

30 mm

Habitat

This frog lives in forests, heathlands and grasslands. Individuals are often found under rocks and logs.

Call

A short, grating "ark" repeated at regular intervals.

Breeding

Males call from February through to June especially after heavy rain. They choose damp nest sites beside swamps, creeks and ditches.

Eggs

Are laid on moist soil in the nests. The eggs are large in size.

Tadpoles

Are small and vary in colour from dark brown to light grey. Some tadpoles have patches of silver-gold on a black background.

Similar species: This frog can be distinguished from Pseudophryne dendyi as it has longer back legs, which are the same length as its body.

Suspected threatening processes

Population Size

An estimate of the total number of adults present in the species entire range is 10001-50000 individuals, or size is unknown but suspected to be large. Some factors affecting population size and distribution are known, but 1 or more major factors are unknown.

Population trend in Australia over the past 50 years

Population size known to be decreasing.

Knowledge of population trend in Australia

Not currently monitored.

Population concentration

Not known to concentrate or exist in discrete locations. (e.g. the number of sites in which individuals group together either seasonally, such as breeding sites, or they may occupy discrete habitat patches within the broader landscape, such as discrete water bodies or drainage units.)

Ongoing management activities in Australia

None directed primarily at the taxon.

Reproductive potential for recovery

The average number of eggs deposited per adult female per year is 51-200 eggs/female/year. Minimum age at which females are known or suspected to first reproduce is <2 years.

Range size in Australia

The size of the geographic area over which the taxon is distributed: > 1,000,000 km².

Distribution trend

Area occupied has declined by 25-74%. (This is an estimate of change in the portion of the total range that is occupied or utilised; it may not equal the change in total range.)

Knowledge of distribution in Australia

Broad range limits or habitat associations are known, but local occurrence cannot be predicted accurately.

Demonstration site only. Content taken from Frogs Australia Network website.