Pouched frog

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Pouched frog
Assa darlingtoni.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Myobatrachidae
Genus: Assa
Species:
A. darlingtoni
Binomial name
Assa darlingtoni
(Loveridge, 1933)
Assa darlingtoni distibution.png
Range of the pouched frog

The pouched frog (Assa darlingtoni), or hip pocket frog, [2] is a small, terrestrial frog found in rainforests in mountain areas of south-eastern Queensland and northern New South Wales, Australia. It is one of two species within the genus Assa , the other being Assa wollumbin [3] and is part of the family Myobatrachidae.

Contents

Description

It is a small frog about 2.5 cm long, red-brown in colour, with some individuals having reverse V shaped patches and/or with light brown dots randomly on their backs. Most specimens have a darker brown stripe that runs from the nostril through the eye down the side of the body. A skin fold is present on either side of the frog running from its eye to its hip. Its hands and feet are completely free of webbing and discs, but the tips of the fingers and toes are swollen. The eye is gold with brown flecks and when the pupil is constricted it is horizontal. There is a 'pocket' on its hip where the frog's tadpoles travel to after hatching.

The hip-pocket frog living in Australia has been affected by the forest fires of Australia. The fires is not suitable for the pocket frog and is now classified as endangered and vulnerable. Although the frog has a unique reproductive method where the male carries the developing tadpoles in the pouch by its hips until metamorphosis. The male species has a greater parental care in the development of the new organisms.

Ecology and behaviour

This frog hides under logs, rocks, and leaf litter in rainforests and adjacent wet sclerophyll forests. It may call through the day but calling is most intense during dawn and dusk. Its call is a very quiet eh-eh-eh-eh-eh-eh, usually six to ten notes. This frog crawls rather than hops. Females are believed to first start breeding between 2 and 3 years and a single female may produce 1–50 eggs a year. Eggs are laid on the land (under decomposing logs, rock or leaf litter) as the tadpoles do not need water for metamorphosis. Breeding takes place during spring and summer. Both male and female frogs guard the nest of eggs and the male carries the tadpoles in the pouch once they have hatched. The tadpoles will reside in the pouch until they have morphed.

This species formerly experienced declines; however, it has recovered.[ citation needed ]

Similar species

The second species in the genus, Assa wollumbin, is smaller and reaches only 1.6 cm in leghth. Assa darlingtoni may be confused with some species of Philoria and Crinia , which live in the same area. Philoria species show thicker arms than Assa darlingtoni, Crinia species have a rougher belly texture.

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The quacking frog also known as the red-thighed froglet due to its legs tending to be bright red. It is a species of frog from the Myobatrachidae family and is in a clad with five other species. The frog is well known for the sound it produces which resembles a quack. It has up to 11 notes and can change the notes in their call. It has larger testes compared to other frogs within the genus and has started to be used in experiments. This frog is found in southwest Australia. It is found in ponds and pools and other moisture filled areas. These frogs engage in polyandry and can result in multiple paternity of its offspring. Additionally, the tadpoles of this species can change the rate they metamorphosize depending on the conditions. The males tend to have larger arm girth and can adopt different mating strategies depending on size. The mating strategy is dependent on male density. The frogs also vary in terms of color and texture of its skin. The tadpoles are generally golden with transparent tails.

<i>Assa</i> (genus)

Assa is a genus of frog in the family Myobatrachidae. These frogs are endemic to a few parts of eastern Australia.

Assa wollumbin, the Wollumbin pouched frog or Mount Wollumbin hip-pocket frog, is a species of small, terrestrial frog endemic to New South Wales, Australia. It is restricted to the slopes of Mount Warning (Wollumbin), where it inhabits rainforest habitat.

References

  1. Jean-Marc Hero, John Clarke, Ed Meyer (2004). "Assa darlingtoni". IUCN Red List of Threatened Species . 2004: e.T41130A10403727. doi: 10.2305/IUCN.UK.2004.RLTS.T41130A10403727.en . Retrieved 12 November 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. Pickrell, John (2019-12-17). "As fires rage across Australia, fears grow for rare species". sciencemag.org. Retrieved 2020-04-26.
  3. "New species of rare tadpole-carrying frog discovered in northern NSW". TheGuardian.com . 7 November 2021.