Cambarus clarkii Girard, 1852, Texas, United States.
OTHER COMMON NAMES
English: Red crayfish, Louisiana crayfish; French: Écrevisse américaine, écrevisse de Louisiane, écrevisse rouge; German: Roter Amerikanischer Sumpfkrebs; Italian: Gambero americano, gambero rosso della Louisiana.
Body size to 4.7 in (120 mm). Claws lengthy and slim. Color darkish pink, generally practically black; claws with vivid pink tubercles (small nodules) and pink tips.
Native to the southern United States and northern Mexico. Widely launched and now present in Europe, Africa, Central and South America, and Southeast Asia.
Sluggish streams, swamps and ponds, particularly the place there’s aquatic vegetation and leaf litter. Most considerable in areas which might be seasonally flooded. Tolerant of a variety of circumstances, together with brackish water.
Can dig burrows over 2 ft (0.6 m) deep to attain the water desk through the dry season.
FEEDING ECOLOGY AND DIET
Omnivorous. Feeds on all kinds of vegetation and smaller animals, together with bugs, snails, tadpoles, and small fishes.
Mature males happen in two varieties. Form I is the ####ually energetic stage, distinguished by enlarged claws, hooks on the base of a number of the strolling legs, and hardened gonopods. Following the reproductive season, males molt and revert to smallerclawed Form II. Females retailer sperm and extrude eggs a number of weeks to months after mating. Eggs are brooded 2–three weeks; there are not any free-swimming larval phases, and the hatchlings are recognizable as small crayfish. The younger might stick with the mom for a number of weeks. There are usually two generations per year. Lifespan is 12–18 months within the wild.
Not listed by the IUCN. An considerable species whose vary is frequently increasing due to intentional introductions and escape from aquaculture operations.
SIGNIFICANCE TO HUMANS
One of crucial aquaculture species, broadly launched all through the world due to quick development fee and tolerance of a variety of circumstances. Often raised in crop rotation with rice within the United States. Introduced into jap Africa to assist management snails that host schistosome parasites. War emblem for the Houmas Indians. Commonly bought for dwelling aquariums; additionally used as bait.