Cherax
Cherax | |
---|---|
Cherax destructor | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Malacostraca |
Order: | Decapoda |
Suborder: | Pleocyemata |
Family: | Parastacidae |
Genus: | Cherax Erichson, 1846 |
Type species | |
Astacus preissii Erichson, 1846
| |
Cherax, commonly known as yabby/yabbies in Australia, is the most widespread
, it is also the largest crayfish genus in the Southern Hemisphere.Habitat
Members of the cherax genus can be found in lakes, rivers, and streams across most of Australia and New Guinea.[1]
The most common and widely distributed species in Australia is the
In New Guinea, Cherax crayfish are found widely in rivers, streams, and lakes, with a particularly high diversity in the
Introduced
Some species are very colourful and sometimes seen in the freshwater aquarium trade.[4]
Reproduction]
The mating season for Cherax is during early spring. After fertilisation, eggs develop inside the mother's body for 4 to 6 weeks. After that period, the eggs transition to the outside of the mother's body and rest on the female's tail. Then the eggs continue to develop and hatch in spring.[5]
Both sexes of Cherax are selective with copulation partners. Females tend to choose males with a larger central mass (abdomen and tail) and
As part of a mating/copulation ritual, males and females fight each other. This allows the female to test the strength of the male to determine if they will produce profitable offspring.[7] During the fight both release urine. The female's release of urine triggers a sexual response from the male.[7] The male's release of urine is an aggressive response towards the fight with the female. When the male smells the female's urine it will stop releasing its own, hoping the female will allow them to copulate.[citation needed]
Once the female has allowed the male to deposit its sperm. The male will position itself on its back and deposit its sperm.[8] Unlike other crayfish species, the Cherax dispar does not use its cheliped to cage females during copulation. It is mainly used during mating when the males and females fight.
Behaviour
In instances when displaying males have chelae of a similar size, they will engage in combat and those with the greater chelae closing force will win.[9]
Female C. dispar uses
Species
The genus contains at least 59 species:[10][11]
- Cherax acherontis Patoka, Bláha & Kouba, 2017[3]
- Cherax albertisii Nobili, 1899
- Cherax albidus Clarke, 1936
- Cherax alyciae Lukhaup, Eprilurahman & von Rintelen, 2018
- Cherax aruanus Roux, 1911
- Cherax austini Coughran & Hobson, 2012
- Cherax barretti Clark, 1941
- Cherax bicarinatus (Gray, 1845)
- Cherax boesemani Lukhaup & Pekny, 2008
- Cherax boschmai Holthuis, 1949
- Cherax buitendijkae Holthuis, 1949
- Cherax cainii Austin, 2002
- Cherax cairnsensis Riek, 1969
- Cherax cartalacoolah Short, 1993
- Cherax cid Coughran & Furse, 2012
- Cherax communis Holthuis, 1949
- Cherax crassimanus Riek, 1967
- Cherax cuspidatus Riek, 1969
- Cherax davisi Clark, 1941
- Cherax depressus Riek, 1951
- Cherax destructorClark, 1936
- Cherax dispar Riek, 1951
- Cherax esculus Riek, 1956
- Cherax gherardii Patoka, Bláha & Kouba, 2015[12][13]
- Cherax glaber Riek, 1967
- Cherax glabrimanus Riek, 1967
- Cherax gladstonensis Riek, 1969
- Cherax holthuisi Lukhaup & Pekny, 2006
- Cherax leckii Coughran, 2005
- Cherax longipes Holthuis, 1949
- Cherax lorentzi Roux, 1911
- Cherax minor Holthuis, 1996
- Cherax misolicus Holthuis, 1949
- Cherax monticola Holthuis, 1950
- Cherax murido Holthuis, 1949
- Cherax neocarinatus Riek, 1967
- Cherax neopunctatus Riek, 1969
- Cherax nucifraga Short, 1991
- Cherax pallidus Holthuis, 1949
- Cherax paniaicus Holthuis, 1949
- Cherax papuanus Holthuis, 1949
- Cherax parvus Short & Davie, 1993
- Cherax peknyi Lukhaup & Herbert, 2008
- Cherax plebejus (Hess, 1865)
- Cherax preissii (Erichson, 1846) syn. Cherax angustus McCulloch, 1914
- Cherax pulcher Lukhaup, 2015[4]
- Cherax punctatus Clark, 1936
- Cherax quadricarinatus (von Martens, 1868)
- Cherax quinquecarinatus (Gray, 1845)
- Cherax rhynchotus Riek, 1951
- Cherax robustus Riek, 1951
- Cherax rotundus Clark, 1941
- Cherax setosus (Riek, 1951)
- Cherax snowden Lukhaup, Panteleit & Schrimpf, 2015[14] syn. Cherax subterigneus[13]
- Cherax solus Holthuis, 1949
- Cherax tenuimanus (Smith, 1912)
- Cherax urospinosus Riek, 1969
- Cherax wagenknechtae Eprilurahman / Lukhaup, 2022
- Cherax wasselli Riek, 1969
- Cherax woworae Patoka, Akmal, Bláha & Kouba, 2023
References
- doi:10.1071/IS03012– via ResearchGate.
- ^ Polhemus, Dan A.; Englund, Ronald A. & Allen, Gerald R. (2004). Freshwater Biotas of New Guinea and Nearby Islands: Analysis of Endemism (PDF) (Report). Bernice Pauahi Bishop Museum, Conservation International.
- ^ PMID 29245414.
- ^ a b Blaszczak-Boxe, Agata (13 May 2015). "Mysterious beautiful blue crayfish is new species from Indonesia". New Scientist. No. 3021. Retrieved 28 May 2015.
- ^ "Crayfish". www.dept.psu.edu. Archived from the original on 18 July 2022. Retrieved 27 May 2022.
- S2CID 84513148.
- ^ PMID 20353555.
- JSTOR 1549258.
- ^ .
- ^ Fetzner, James W. Jr. (11 January 2010). "Genus Cherax Erichson, 1846". Crayfish Taxon Browser. Carnegie Museum of Natural History. Archived from the original on 2 April 2015. Retrieved 24 November 2015.
- ^ "Cherax". Integrated Taxonomic Information System.
- PMID 26249463.
- ^ .
- ^ Dockterman, Eliana (25 August 2015). "New species of crayfish named after Edward Snowden". Time. Retrieved 25 August 2015.