digplanet beta 1: Athena
Share digplanet:


Applied sciences






















Procambarus clarkii
Procambarus clarkii.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Family: Cambaridae
Genus: Procambarus
Subgenus: Scapulicambarus
Species: P. clarkii
Binomial name
Procambarus clarkii
(Girard, 1852) [2]

Procambarus clarkii is a freshwater crayfish species, native to the Southeastern United States, but found also on other continents, where it is often an invasive pest. It is known variously as the red swamp crawfish, red swamp crayfish, Louisiana crawfish, Louisiana crayfish or mudbug.[3]

Range and range expansion[edit]

The native range of P. clarkii is along the Gulf Coast from northern Mexico to the Florida panhandle, as well as inland, to southern Illinois and Ohio.[1] It has also been introduced, sometimes deliberately, outside its natural range to countries in Asia, Africa, Europe and elsewhere in the Americas. In northern Europe, the populations are self maintaining but not expanding, while in southern Europe, P. clarkii is multiplying and actively colonising new territory, at the expense of the native crayfish, Astacus astacus and Austropotamobius spp. Individuals are reported to be able to cross many miles of relatively dry ground, especially in wet seasons, although the aquarium trade and anglers may have hastened the spread in some areas (it is believed that anglers using P. clarkii as bait introduced it to the American state of Washington). Attempts have also been made to use P. clarkii as a biological control organism, to reduce levels of the snails involved in the life cycle of schistosomiasis, leading to the dispersal of P. clarkii in, for instance, Kenya.


P. clarkii, dorsal view

P. clarkii is most commonly found in warm fresh water, such as slowly flowing rivers, marshes, reservoirs, irrigation systems and rice paddies. It is considered to be the most ecologically plastic species in the order Decapoda, and is able to grow quickly even in only seasonally present water, being able to tolerate dry spells of up to four months. P. clarkii grows quickly, and is capable of reaching weights in excess of 50 g (1.8 oz), and sizes of 5.5–12 cm (2.2–4.7 in) long.[4] It is also able to tolerate slightly saline water, which is unusual for a crayfish. Additionally, P. clarkii are physiologically capable of tolerating relatively low dissolved oxygen concentrations.[5] The average lifetime of Procambarus clarkii is five years. Some individuals are known to have reached ages (in nature) of over six years.

The burrowing activities of P. clarkii can lead to damage to water courses and to crops, particularly rice, and its feeding can disrupt native ecosystems. It may out-compete the native crayfish species, and is a vector for the crayfish plague fungus Aphanomyces astaci, for crayfish virus vibriosis, and a number of worms parasitic on vertebrates. and this fish appeared in Egypt in the beginning of the century and now it owns the river and it's the most common fish in Egypt now may be because Egyptians don't eat it but it became the anglers nightmare

Economic importance[edit]

Harvests of P. clarkii account for a large majority of the crayfish produced in the United States and elsewhere. Crayfish farming began in Louisiana in the 18th century, taking place in rice fields in a concurrent or alternate culture system. The concurrent culture of rice and crayfish makes good use of land, resources, equipment, and infrastructure already being used for rice production. However, crawfish production has decreased in recent years due to an increase of imports from China, which is now the world's leading producer of crawfish and is also using a rice-based system.[6] A number of species of crustaceans were introduced to China to create markets for aquaculture and because they are better adapted to growing in a rice field than native fish species. Rice-fish farming originated in China and is once again growing as the yields from Green Revolution practices used to grow rice are no longer increasing, and resources such as land and water are becoming more limited.[7]

P. clarkii has also been introduced elsewhere for cultivation, such as Spain, where its success is attributable to its ability to colonise disturbed habitats that would be unsuitable for the native crayfish Astacus astacus. P. clarkii is also marketed by biological supply companies for teaching and research. P. clarkii also exhibits different color morphs, including white, blue, and orange and are commonly sold in pet stores.

The introduction of P. clarkii has also resulted in economic losses in some regions. In the Baixo Mondego region of Portugal, it caused a decrease in 6.3% of profits in rice fields.[8] However, this was on a wet-seeded field. All negative effects of crawfish can be avoided if adult crawfish are separated from the seed and seedlings.[9]

As food[edit]

Boiled crawfish, Louisiana

Procambarus clarkii is eaten in the United States, Cambodia, Europe, China, Africa, Australia, Thailand, Canada, New Zealand and the Caribbean. About 98% of the crayfish harvested in the United States come from Louisiana, where the standard culinary term is crawfish.

Louisiana in 1990 produced 90% of the crawfish in the world and consumed 70% locally.[10]

Louisiana crawfish are usually boiled in a large pot with heavy seasoning (salt, cayenne pepper, lemon, garlic, bay leaves, etc.) and other items such as potatoes and corn on the cob. Many differing methods are used to season a crawfish boil, and an equal number of opinions on which one is correct.[11] They are generally served at a gathering known as a crawfish boil.


Procambarus clarkii normally reproduces sexually, but recent research suggests it may also reproduce by parthenogenesis.[12]


  1. ^ a b K. A. Crandall (2010). "Procambarus clarkii". IUCN Red List of Threatened Species. Version 3.1. International Union for Conservation of Nature. Retrieved April 13, 2011. 
  2. ^ C. Girard (1852). "A revision of the North American astaci, with observations on their habits and geographic distribution". Proceedings of the Academy of Natural Sciences of Philadelphia 6: 87–91. 
  3. ^ "Seafood List Search Returns". FDA Acceptable Seafood Name Database. 2008. Retrieved July 17, 2010. 
  4. ^ "Procambarus clarkii (crustacean)". Global Invasive Species Database. March 31, 2006. Retrieved January 31, 2010. 
  5. ^ Bonvillain, Christopher P.; D. Allen Rutherford; William E. Kelso; Christopher C. Green (2012). "Physiological biomarkers of hypoxic stress in red swamp crayfish Procambarus clarkii from field and laboratory experiments". Comparative Biochemistry and Physiology A 163: 15–21. doi:10.1016/j.cbpa.2012.04.015. 
  6. ^ W. Ray McClain & Robert P. Romaire. "Crawfish culture: A Louisiana aquaculture success story" (PDF). World Aquaculture 35 (4): 31–35, 60–61. 
  7. ^ Miao Weimin (2010). "Recent developments in rice-fish culture in China: a holistic approach for livelihood improvement in rural areas". Success Stories in Asian Aquaculture. pp. 15–40. doi:10.1007/978-90-481-3087-0_2. ISBN 978-90-481-3087-0. 
  8. ^ Pedto M. Anastácio, Vasco S. Parente & Alexandra M. Correia (2005). "Crayfish effects on seeds and seedlings: identification and quantification of damage". Freshwater Biology 50 (4): 697–704. doi:10.1111/j.1365-2427.2005.01343.x. 
  9. ^ https://estudogeral.sib.uc.pt/jspui/bitstream/10316/5448/1/file50b1ec0e12ad4323b6772dcd484668a8.pdf
  10. ^ Larry W. de la Bretonne, Jr. and Robert P. Romaire (1990). "Crawfish production: harvesting, marketing and economics" (PDF). SRAC Publication (Southern Regional Aquaculture Center) 42. 
  11. ^ How to Season a Crawfish Boil
  12. ^ G. H. Yue, G. L. Wang, B. Q. Zhu, C. M. Wang, Z .Y. Zhu, L. C. Lo (2008). "Discovery of four natural clones in a crayfish species Procambarus clarkii". International Journal of Biological Sciences 4 (5): 279–282. doi:10.7150/ijbs.4.279. PMC 2532795. PMID 18781225. 

Further reading[edit]

this fish introduced in Egypt in the begging of this century and it now owns the Nile *M. James Norrocky (1991). "Observations on the ecology, reproduction and growth of the burrowing crayfish Fallicambarus (Creaserinus) fodiens (Decapoda: Cambaridae) in North-central Ohio". American Midland Naturalist 125 (1): 75–86. doi:10.2307/2426371. JSTOR 2426371. 

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Procambarus_clarkii — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
4994 videos foundNext > 

Procambarus clarkii vs Procambarus alleni

Krebs und Garnelenbecken 625liter. 250cm x 50cm x 50cm.

Procambarus clarkii ghost

Procambarus clarkii - male.


White Procambarus Clarkii FEEDING FRENZY!

They never did this with any of the other food that I put in there. I put in one dead goldfish and one live goldfish and within seconds they got swarmed.

Procambarus Clarkii

Procambarus Clarkii, auch Roter Sumpfkrebs genannt. Hier sieht man sehr schön, was für eine tolle Ergänzung ein Procambarus Clarkii in einem Malawibecken ...

Procambarus clarkii Crayfish Molting


Procambarus Clarkii ghost feeding time.

Cangrejo Americano ( Procambarus clarkii)

Bueno este video es un poco corto, pero os enseño el cangrejo americano una especie de cangrejo que es invasora y que ahora habita en casi todos nuestros ...

GarnelenTv Folge 9 (HD 2013) Plankton Pur, Procambarus clarkii und die Tibee Zwerggarnele

Was ist JBL Plankton Pur? Wo kommt der Weiße Sumpfkrebs eigentlich her? Und wie halte und Züchte ich die Tibee Garnele? Das alles erklären wir euch hier ...

Procambarus Clarkii mating

This is my female Red Swamp crayfish ,dubbed "scooter", being mated by a wild caught male cray. At approx 5" in length (including claws), shes the largest ...

4994 videos foundNext > 

257 news items

Michigan State University Extension

Michigan State University Extension
Fri, 28 Aug 2015 09:09:02 -0700

introductions of the red swamp crayfish (Procambarus clarkii). Students exploring aside Smith gained an appreciation for the importance of biodiversity conservation, recognizing diversity of crayfish species, the many different types of water they ...
L'Unione Sarda
Thu, 27 Aug 2015 04:55:59 -0700

lotusesprit 27/08/2015 14:18:59. Soprendiamoci tutti se in Italia la percentuale di astensionismo aumenta elezione dopo elezione. Modesto Fenu potrà tornare a fare campagne contro l'invasione del Procambarus clarkii conosciuto meglio come gambero ...


Sun, 30 Aug 2015 06:30:00 -0700

小龙虾的真名叫“克氏原螯虾”,学名叫Procambarus clarkii,是一种如假包换的淡水虾,根本不是虫子! 小龙虾原产于美国东南部,所以又叫美国螯虾。它是最具食用价值的淡水龙虾品种,年产量占整个淡水龙虾产量的70-80 ...

Viterbo Post

Viterbo Post
Mon, 24 Aug 2015 18:41:15 -0700

Mamma, papà, andiamo al museo a vedere il Procambarus clarkii? Ecco, se siete genitori, e se vi sentite fare una richiesta di questo tipo dai vostri figli, tranquilli. Non portateli dall'esorcista. Portateli all'acquario di Bolsena. Che il suddetto ...

Le Progrès

Le Progrès
Sun, 16 Aug 2015 20:02:44 -0700

Un troisième genre d'écrevisses, les Procambarus clarkii, vit aussi, en plus faible quantité, dans les rivières du département. Dans les années 1960, les pêcheurs se sont rendus compte que la population d'écrevisses autochtones diminuait. Pour palier à ...


Mon, 13 Jul 2015 09:24:25 -0700

DNR checks traps for destructive crayfish. Associated Press & WZZM 7:21 p.m. EDT July 15, 2015. 635723867439840282-red-swamp-crayfish. "Procambarus clarkii" or red swamp crayfish (Photo: Licensed under Public Domain via Wikimedia Commons).


Wed, 19 Aug 2015 13:02:28 -0700

大陸俗稱的小龍蝦不是龍蝦科,全名是克氏螯蝦(Procambarus clarkii),原產美國東南部,是具食用價值的淡水螯蝦,1929年從日本移植到南京一帶後,經人工養殖推廣,歸化為大陸自然水域的種群。 小龍蝦適合加辛香料料理,在大陸是平民小吃,江浙一帶最喜愛。


Fri, 12 Jun 2015 14:45:00 -0700

Based on a photo of the shell accompanying the article, the crawfish they found would be known in Louisiana as the red swamp crawfish, which has the scientific name of Procambarus clarkii, according to Robert Romaire, an aquaculture specialist with the ...

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight