Plants and Animals

How many species of crustaceans are there?

Link to this answer

CloseClose

Link to this answer

Share this credible answer with others. Simply paste this code into your blog or Web page:

<a href="http://qanda.encyclopedia.com/question/many-species-crustaceans-there-80447.html" >How many species of crustaceans are there?</a>
E-mail this answer Link to this answer

Members of class Crustacea are characterized by two pairs of antennae and two pairs of modified appendages (maxillae) used for food handling. There are over 40,000 species of crustaceans, including lobsters, shrimps, crayfish, crabs, copepods, barnacles, and a large number of minute planktonic forms. Crustaceans are the only arthropods that are mainly aquatic, and most of them are marine. Some have spread to humid areas near water. They use gills for respiration. The thoracic region typically bears walking legs (pereiopods), also used for capturing prey. The abdominal region often is equipped with swimmerets (pleopods) and a tail fan made up of a pair of appendages (uropods) and the telson. Their excretory organs are modified nephridia, as a rule producing a dilute urine that contains a great deal of ammonia.

Answer verified with
Get more facts and information about Arthropoda . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

Similar questions: What are the characteristics of crustaceans? How do crustaceans breathe? How do crustaceans go to the bathroom? How do crustaceans excrete wastes? [ Hide these questions ]

Related research questions

Related research articles

King crab: as landings rise and prices drop, more consumers discover the "wow"...
Magazine article from: Seafood Business ...crack open a leg, and there's a huge piece of meat in there," Palicki says...crab--the largest species, which can reach 6 feet...representatives are hoping that more crab and lower prices will spur more consumers to find out...camtschaticus) is the most common species and...
Dungeness crab: the harvest is strong and the meat quality is high, but the...
Magazine article from: Seafood Business ...is exceptionally high. But there's a downside: The economy...1.75. The recession and more-than-adequate inventories...recovering from the recession. There's plenty of product available...the live market softer, so there's no room to push up prices...
Species identity and aqueous calcium concentrations as determinants of calcium...
Magazine article from: Canadian Journal of Fisheries and Aquatic Sciences ...component of the crustacean zooplankton carapace...zooplankton obtain most of their Ca from...concentrations are falling in many soft-water lakes...globally. Hence, there is a need to identify species with high Ca demands...identity was the most important determinant...Redaction] ...
American lobster: whether displayed in tanks or dressing up the menu, this...
Magazine article from: Seafood Business ...far the restaurant's No. 1 seller. "There's been an emphasis on comfort food recently...lobster is very American. I think it's more popular than ever." The market's resilience...habits, and demand for lobster, which most consumers consider a luxury, weakened...time high of 57.2 million pounds, ...
Crustacean social behavioral changes in response to isolation.
Magazine article from: The Biological Bulletin Introduction There is current interest...2006). Decapod crustaceans are a key subject...documented in numerous species (e.g., Bovjerg...animals, and the more interactions won...For a number of crustacean species, victory...Daniels, 2003). There is also evidence...aggressive ...
See all results at HighBeam

HighBeam gives you access to newspaper, magazine, and trade journal articles plus press releases, facts, information, and biographies from thousands of sources.