Austrothelphusa transversa
| Austrothelphusa transversa | |
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| Austrothelphusa transversa from Queensland | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Brachyura |
| Family: | Gecarcinucidae |
| Genus: | Austrothelphusa |
| Species: | A. transversa
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| Binomial name | |
| Austrothelphusa transversa (von Martens, 1868)[1]
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| Synonyms[1][2] | |
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Austrothelphusa transversa (
Taxonomy and description
The inland crab has undergone numerous changes of specific name, changing genera, subgenera, and subfamilies, including Parathephusa, Liotelphusa, and Holthuisana.
Distribution and Habitat
The inland crab is endemic to the Australian mainland and is widely distributed throughout the north-western half of the continent, living both in the arid inland conditions of central Australia as well as the tropical and sub-tropical rivers of northern Australia.
Behaviour
Aestivation
The inland crab is thought to
Diet
The return of water to ephemeral rivers in the wet season supports a temporary abundance of aquatic life, such as algae and fish.[6] Though the inland crab is an omnivore, they feed primarily on algae that bloom when the water returns.[6][5] However, the inland crab is an opportunistic scavenger, and will feed on any decaying animal matter it encounters.[6]
Amphibious
The inland crab's modified gills work as lungs when exposed to the atmosphere, allowing the animals to become
Reproduction
The female crab carries fertilized eggs under her abdomen, which is tucked under the crab's thorax. Females can lay anything from 100 to 350 eggs.[8][9] The female holds on to her eggs and young throughout larval development, until the early juvenile stage. Then, the mother will disperse the young into the close surroundings, where they will fend for themselves.[8] The mother crab is believed to hold onto her young during the æstivation period in the burrows, releasing the young crabs when she exits æstivation. This means that the young are protected through the most difficult part of the year, giving the young an optimal chance for success as the waterways refill.[6]
Conservation Actions
Although considered to be of 'Least Concern' by the IUCN, the inland crab occurs in several protected areas, including Sturt National Park.[3] Due to its wide distribution, the inland crab is seen as of 'Least Concern', but to what extent the species will remain at this level will depend on further studies.[1] More recent studies predict that due to its wide distribution, it could be more speciose than originally estimated.[4]
Threats
Urbanization and human modification to natural rivers are among the factors threatening the inland crab. Altering the natural flow of creeks, modifying the structure of their banks, especially replacing natural substrate with concrete channels, has a direct impact on the species' ability to burrow and æstivate.[8] Along with prolonged drought, agriculture, and climate change, the inland crab will have to face even longer periods without water.[6]
References
- ^ doi:10.2305/IUCN.UK.2008.RLTS.T134922A4036588.en. Retrieved 20 November 2021.)
{{cite journal}}: CS1 maint: multiple names: authors list (link - ^ "Austrothelphusa transversa (von Martens, 1868)". Atlas of Living Australia. Retrieved 28 September 2018.
- ^ )
- ^ .
- ^ a b c d "Austrothelphusa transversa (Martens, 1868)". Atlas of Living Australia. Retrieved 25 October 2020.
- ^ .
- .
- ^ hdl:10072/67596.
- ^ "Inland Freshwater Crab". Queensland Museum. Queensland Government. Retrieved 25 October 2020.