Cherax quadricarinatus (known by several common names, including Australian red claw crayfish, Queensland red claw, redclaw, tropical blue crayfish, freshwater blueclaw crayfish) is an Australian freshwater crayfish.
Cherax quadricarinatus
Typical wild form (above) and aquarium form (below)
This tropical crustacean is very tolerant of environmental changes, and is primarily a detritivore.
Descriptionedit
The colour of C. quadricarinatus ranges from dark brown to blue-green. Their heads have four keels (as inferred by the epithet), and adult males have a distinct red patch on the outer margin of the claws.[5] They can reach up to 600 grams (21 oz).[5]
Life cycleedit
Females, which are smaller than males, spawn 300–800 olive-green eggs per brood,[6] which are fertilised from a spermatophore which the male has deposited at the base of her walking legs (pereiopods) during mating. Fertilised eggs are affixed to the female's pleopods, situated on the underside of the tail. Incubation takes approximately six weeks and the newly hatched juveniles rapidly become independent.[6]
Aquacultureedit
C. quadricarinatus is often kept in aquariums worldwide, and is the only species of crayfish that can be kept in indoor aquaria for ornamental use in the UK (except Scotland) without a licence.[7][8]
It is farmed commercially in Queensland and the Northern Territory, and is harvested at between 35–130 grams (1.2–4.6 oz).[6]C. quadricarinatus is a sought-after product with a delicate crustacean flavour. They are both non-aggressive in nature as well as highly fertile, and can therefore be bred in large numbers in captivity. Time to sexual maturity, and therefore harvest size, is somewhere between six and twelve months in optimally farmed conditions.
Referencesedit
^ abcAustin, C.M.; Jones, C. & Wingfield, M. (2010). "Cherax quadricarinatus". IUCN Red List of Threatened Species. 2010: e.T4621A11041003. doi:10.2305/IUCN.UK.2010-3.RLTS.T4621A11041003.en. Retrieved 19 November 2021.
^Patoka, Jiří; Wardiatno, Yusli; Yonvitner; Kuříková, Pavlína; Petrtýl, Miloslav; Kalous, Lukáš (2016). "Cherax quadricarinatus (von Martens) has invaded Indonesian territory west of the Wallace Line: evidences from Java". Knowledge and Management of Aquatic Ecosystems. 417 (417): 39. doi:10.1051/kmae/2016026.
^Nakayama, Shouta M. M.; Ikenaka, Yoshinori; Muzandu, Kaampwe; Choongo, Kennedy; Oroszlany, Balazs; Teraoka, Hiroki; Mizuno, Naoharu; Ishizuka, Mayumi (2010). "Heavy Metal Accumulation in Lake Sediments, Fish (Oreochromis niloticus and Serranochromis thumbergi), and Crayfish (Cherax quadricarinatus) in Lake Itezhi-tezhi and Lake Kariba, Zambia". Archives of Environmental Contamination and Toxicology. 59 (2): 291–300. doi:10.1007/s00244-010-9483-8. hdl:2115/43285. ISSN 0090-4341. PMID 20162262.
^Shane T. Ahyong; Darren C. J. Yeo (2007). "Feral populations of the Australian Red-Claw crayfish (Cherax quadricarinatus von Martens)". Biological Invasions. 9 (8): 943–946. doi:10.1007/s10530-007-9094-0.
^"Introduce or keep non-native fish and shellfish". gov.uk. His Majesty's Government. 12 October 2022. Retrieved 5 March 2023.
^"Illegal crayfish on the rise in the UK". Practical Fishkeeping. Warners Group Publications Plc. Retrieved 27 February 2023.
External linksedit
Media related to Cherax quadricarinatus at Wikimedia Commons
fisheries information
April 12, 2024
cherax, quadricarinatus, known, several, common, names, including, australian, claw, crayfish, queensland, claw, redclaw, tropical, blue, crayfish, freshwater, blueclaw, crayfish, australian, freshwater, crayfish, typical, wild, form, above, aquarium, form, be. Cherax quadricarinatus known by several common names including Australian red claw crayfish Queensland red claw redclaw tropical blue crayfish freshwater blueclaw crayfish is an Australian freshwater crayfish Cherax quadricarinatusTypical wild form above and aquarium form below Conservation statusLeast Concern IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ArthropodaClass MalacostracaOrder DecapodaSuborder PleocyemataFamily ParastacidaeGenus CheraxSpecies C quadricarinatusBinomial nameCherax quadricarinatus Von Martens 1868 Contents 1 Distribution and ecology 2 Description 3 Life cycle 4 Aquaculture 5 References 6 External linksDistribution and ecology editC quadricarinatus is native to permanent freshwater streams billabongs and lakes on the north coast of the Northern Territory northeastern Queensland and Papua New Guinea 1 Through translocation by humans the range has spread down to southern Queensland and into the far north of Western Australia C quadricarinatus is considered an invasive species and has established feral populations in South Africa Mexico Jamaica Puerto Rico 1 Indonesia 2 Zambia 3 Malaysia and Singapore 4 This tropical crustacean is very tolerant of environmental changes and is primarily a detritivore Description editThe colour of C quadricarinatus ranges from dark brown to blue green Their heads have four keels as inferred by the epithet and adult males have a distinct red patch on the outer margin of the claws 5 They can reach up to 600 grams 21 oz 5 Life cycle editFemales which are smaller than males spawn 300 800 olive green eggs per brood 6 which are fertilised from a spermatophore which the male has deposited at the base of her walking legs pereiopods during mating Fertilised eggs are affixed to the female s pleopods situated on the underside of the tail Incubation takes approximately six weeks and the newly hatched juveniles rapidly become independent 6 Aquaculture editC quadricarinatus is often kept in aquariums worldwide and is the only species of crayfish that can be kept in indoor aquaria for ornamental use in the UK except Scotland without a licence 7 8 It is farmed commercially in Queensland and the Northern Territory and is harvested at between 35 130 grams 1 2 4 6 oz 6 C quadricarinatus is a sought after product with a delicate crustacean flavour They are both non aggressive in nature as well as highly fertile and can therefore be bred in large numbers in captivity Time to sexual maturity and therefore harvest size is somewhere between six and twelve months in optimally farmed conditions References edit a b c Austin C M Jones C amp Wingfield M 2010 Cherax quadricarinatus IUCN Red List of Threatened Species 2010 e T4621A11041003 doi 10 2305 IUCN UK 2010 3 RLTS T4621A11041003 en Retrieved 19 November 2021 Patoka Jiri Wardiatno Yusli Yonvitner Kurikova Pavlina Petrtyl Miloslav Kalous Lukas 2016 Cherax quadricarinatus von Martens has invaded Indonesian territory west of the Wallace Line evidences from Java Knowledge and Management of Aquatic Ecosystems 417 417 39 doi 10 1051 kmae 2016026 Nakayama Shouta M M Ikenaka Yoshinori Muzandu Kaampwe Choongo Kennedy Oroszlany Balazs Teraoka Hiroki Mizuno Naoharu Ishizuka Mayumi 2010 Heavy Metal Accumulation in Lake Sediments Fish Oreochromis niloticus and Serranochromis thumbergi and Crayfish Cherax quadricarinatus in Lake Itezhi tezhi and Lake Kariba Zambia Archives of Environmental Contamination and Toxicology 59 2 291 300 doi 10 1007 s00244 010 9483 8 hdl 2115 43285 ISSN 0090 4341 PMID 20162262 Shane T Ahyong Darren C J Yeo 2007 Feral populations of the Australian Red Claw crayfish Cherax quadricarinatus von Martens Biological Invasions 9 8 943 946 doi 10 1007 s10530 007 9094 0 a b Brendan Johnson June 10 2010 Redclaw Primary Industry amp Fisheries Queensland Department of Employment Economic Development and Innovation Government of Queensland Archived from the original on 2010 09 22 Retrieved October 4 2010 a b c John Dexter April 8 2009 Redclaw Primary Industry amp Fisheries Queensland Department of Employment Economic Development and Innovation Government of Queensland Archived from the original on 2011 03 12 Retrieved October 4 2010 Introduce or keep non native fish and shellfish gov uk His Majesty s Government 12 October 2022 Retrieved 5 March 2023 Illegal crayfish on the rise in the UK Practical Fishkeeping Warners Group Publications Plc Retrieved 27 February 2023 External links edit nbsp Media related to Cherax quadricarinatus at Wikimedia Commons Freshwater crayfish Redclaw fisheries information Retrieved from https en wikipedia org w index php title Cherax quadricarinatus amp oldid 1209119554, wikipedia, wiki, book, books, library,
