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Wednesday, June 29, 2011

Sexing Crayfish / Crawfish

During mating the male red claw will attach a spermatophore (sack containing sperm) to the underside of the female between the third and fifth pair of legs. The spermatophore is white and about 1/3 inch in diameter.

Friday, June 24, 2011

Habitat and Spread of Crayfish / Crawfish / Crawdad / Crawdads

 

Crawfish or Crayfish are genus the groups of shrimp (Crustacea) that naturally has a relative large measure and have a life cycle only in freshwater environments,

Crayfish / Crawfish / Crawdads Morfology / Anatomy


Crayfish (also known as crawdads, crawfish, mudbugs, or yabbies), are common throughout the world. There are  over 400 difference species of crayfish, 330 of which are native to the United States. Crayfish are commonly used  as food, bait,

Thursday, May 19, 2011

Anatomy, Geographical Distribution and Classification

The body of a decapod crustacean, such as a crab, lobster, or prawn, is made up of twenty body segments grouped into two main body parts, the cephalothorax and the abdomen. Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. On average, crayfish grow to 17.5 centimetres (6.9 in) in length, but some grow larger.
There are three families of crayfish, two in the northern hemisphere and one in the southern hemisphere. The southern-hemisphere (Gondwana-distributed) family Parastacidae lives in South America, Madagascar and Australasia, and is distinguished by the lack of the first pair of pleopods. Of the other two families, members of the Astacidae live in western Eurasia and western North America and members of the family Cambaridae live in eastern Asia and eastern North America.

About Crayfish / Crawfish / Crawdads

Procambarus Clarkii


Crayfish, crawfish, or crawdads – members of the superfamilies Astacoidea and Parastacoidea – are freshwater crustaceans resembling small lobsters, to which they are related. They breathe through feather-like gills and are found in bodies of water that do not freeze to the bottom; they are also mostly found in brooks and streams where there is fresh water running, and which have shelter against predators. Most crayfish cannot tolerate polluted water, although some species such as the invasive Procambarus clarkii are more hardy. Crayfish feed on living and dead animals and plant