1. Crustacean - Wikipedia, The Free Encyclopedia The crustaceans (crustacea) are a large group of arthropods, comprising approximately 52000 described species 1, and are usually treated as a subphylum http://en.wikipedia.org/wiki/Crustacean

Crustacean From Wikipedia, the free encyclopedia Jump to: navigation search For the Dutch band, see Crustacean (band) Crustacea Fossil range: Cambrian to recent Abludomelita obtusata , an amphipod Scientific classification Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Br¼nnich Classes Subclasses Branchiopoda ... Eumalacostraca The nauplius larva of a dendrobranchiate Porcellio scaber , the common rough woodlouse, a terrestrial crustacean Pollicipes polymerus , the gooseneck barnacle Glyphea pseudastacus , a fossil glypheoid The crustaceans Crustacea ) are a large group of arthropods , comprising approximately 52,000 described species , and are usually treated as a subphylum . They include various familiar animals, such as lobsters crabs shrimp crayfish and barnacles . The majority are aquatic, living in either fresh water or marine environments, but a few groups have adapted to terrestrial life, such as terrestrial crabs terrestrial hermit crabs and woodlice . The majority are motile , moving about independently, although a few taxa are parasitic and live attached to their hosts (including sea lice fish lice whale lice tongue worms , and Cymothoa exigua , all of which may be referred to as "crustacean lice"), and adult barnacles live a sessile life — they are attached head-first to the substrate and cannot move independently.

2. ADW: Crustacea: Information Most crustaceans are freeliving, but some are sessile and a few are even parasitic. Most use their maxillae and mandibles to take in food. http://animaldiversity.ummz.umich.edu/site/accounts/information/Crustacea.html

Overview News Technology Conditions of Use ... Home Kingdom Animalia Phylum Arthropoda Subphylum Crustacea Subphylum Crustacea crustaceans Information Pictures Specimens Classification editLink('skunkworks/.accounts/200310302520') 2008/03/16 03:29:41.885 GMT-4 By Phil Myers Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Members of this Subphylum Approximately 30,000 species make up this Subphylum. Most are aquatic; of these, the majority are marine but some are found in fresh water. Members of the Subphylum include lobsters, crabs, crayfish, shrimp, copepods, barnacles, and several other groups of organisms. All have two pairs of antennae, a pair of mandibles, a pair of compound eyes (usually on stalks), and two pair of maxillae on their heads, followed by a pair of appendages on each body segment (crustacean bodies usually are made up of head, thorax, and abdomen, although the segments composing these tagmata differ among different Classes). The appendages are primitively branched (biramous), and although this condition is modified in many species, adults always have at least some biramous appendages. Crustaceans respire via gills. Like other arthropods, all have a hard but flexible exoskeleton. Most crustaceans are free-living, but some are sessile and a few are even parasitic. Most use their maxillae and mandibles to take in food. The walking legs, including specialized chelipeds, may be used to help capture prey. Some crustaceans filter tiny plankton or even bacteria from the water; others are active predators; while still others scavenge nutrients from detritus.

3. Crustacea Phylogeny of selected maxillopodan and other crustacean taxa based on 18S ribosomal nucleotide sequences a preliminary analysis. Acta Zoologica 73373382. http://www.tolweb.org/Crustacea

Temporary Page Containing Groups Arthropoda Bilateria Animals Eukaryotes ... Life on Earth Other Arthropoda Hexapoda Crustacea Pauropoda Diplopoda Chilopoda Symphyla ... Trilobites Subgroups Branchiopoda Remipedia Cephalocarida Copepoda ... Malacostraca Crustacea Crabs, lobsters, shrimp, barnacles, sow bugs, etc. This tree diagram shows the relationships between several groups of organisms. The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right. You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species. For more information on ToL tree formatting, please see

4. Crustacea.net - Interactive Keys Provide an interactive information retrieval system for the world crustaceans. http://www.crustacea.net/

Home Introduction World Crustacea Abbreviations ... Australian Mysidacea database now available The new Australian version of the Mysidacea database is now available to view. An Australian Museum website

5. Introduction To The Crustaceamorpha If you aren t yet convinced how important crustaceans are, think about this crustaceamorpha crustaceans have an extremely wide variety of body shapes. http://www.ucmp.berkeley.edu/arthropoda/crustacea/crustaceamorpha.html

Introduction to the Crustaceamorpha Seafood special and other crusties The Crustaceamorpha includes lobsters, crabs, shrimp, pill bugs, krill, barnacles, water fleas, brine shrimp (sea monkeys) copepods ostracods There are many more that remain to be named, particularly in the deep sea. A number of species are economically important to humans as sources of food, and many serve as the main source of food for many fish and whales. If you aren't yet convinced how important crustaceans are, think about this: Crustaceamorpha are the dominant arthropods, and very often the most numerically abundant type of animal in aquatic environments. They make up a significant portion of animal communities in all aquatic habitats, from the most extreme (glacial ice or temporary desert ponds) to the largest (deep ocean) and everywhere in between. The Crustaceamorpha are arguably the most well known of the arthropods because of their contributions to aquatic, aerial, and terrestrial food webs. Crustaceans have an extremely wide variety of body shapes. In fact, body form is so varied throughout the crustacean groups that the only feature all crustaceans share is the possession of two pairs of antennae at some stage of their life cycle. Their colorful exoskeletons and active habits make them favorites to watch at aquariums and when

6. Crustaceans The following are some major subclasses of the class crustacea. (1) Subclass Branchiopodafairy shrimp, brine shrimp (2) Subclass Copepodacopepods http://www.cyhaus.com/marine/crustacea.htm

Crustaceans Phylum Arthropoda Class Crustacea The following are some major subclasses of the class Crustacea (1) Subclass: Branchiopoda fairy shrimp, brine shrimp (2) Subclass: Copepoda copepods (3) Subclass: Cirripedia barnacles (4) Subclass: Malacostaca Order: Stomatopoda mantis shrimp Order: Euphausiacea krill Order: Decapoda shrimps, lobsters, crabs BACK TO THE ARTHROPOD PAGE!

7. Crustacea - Introduction crustacea is the only group of arthropods that is primarily marine, though there are many fresh water species also. There are some semiterrestrial species, http://www-biol.paisley.ac.uk/Courses/Tatner/biomedia/units/crus1.htm

Unit: Crustacea 1 Introduction CRUSTACEA There are about 42,000 species of Crustacea, including many of the most familiar arthropods such as the crabs, the lobsters and the woodlice. Crustacea is the only group of arthropods that is primarily marine, though there are many fresh water species also. There are some semi-terrestrial species, but these are not, in general, well adapted for life on land. In contrast with other members of the phylum Arthropoda, most notably insects, crustaceans have not been very successful on land. This can be attributed to a number of CONSTRAINTS. However, Crustacea have exploited every habitat of the marine environment, and in so doing have become a very diverse group, from the very large Japanese Spider Crab (look at the specimen in the museum), to the tiny planktonic water flea Daphnia sp. The Crustacea can be divided into six major groups and after a brief introduction to their common body plan, a description of each follows on the remaining unit pages. To revise Key Features refer to those listed in the Arthropoda unit. Glossary Home Museum Plan Next Page Unit Contents 1 Introduction 2 Body structure 3 Class Branchiopoda 4 Class Ostracoda ... 12 Test Yourself 3

8. Crustacea, Natural History Museum Of Los Angeles County Research conducted in our laboratory focuses on biodiversity and phylogenetic relationships within and among the various crustacean lineages. http://crustacea.nhm.org/

NHMLAC Staff Research Collections ... Web Services Crustacea Research conducted in our laboratory focuses on biodiversity and phylogenetic relationships within and among the various crustacean lineages. Crustaceans are members of the phylum Arthropoda. They are primarily marine, but many also inhabit freshwater and terrestrial habitats from the deep-sea to the highest mountain lakes. More than 52,000 species of crabs, shrimps, lobsters and their close relatives have been described; that figure is twice the number of all amphibians, reptiles, birds, and mammals combined! Although the insects still rule in terms of numbers, the crustaceans are the most diverse in terms of form. The largest of the crustaceans include the the giant Japanese spider crab ( Macrocheira kaempferi ) with its four-meter legspan, the Alaskan king crab ( Paralithodes camtschatica), which can weigh more than 10 kilograms, and the giant Tasmanian crab ( Pseudocarcinus gigas), which has been recorded at an impressive 14 kilograms. On the other end of the spectrum, some crustaceans never grow larger than 0.25 millimeters, even as adults. Crabs, shrimps, and lobsters are well-known crustaceans. However, barnacles, pillbugs, amphipods, copepods, krill, crayfishes, sea fleas, clam shrimps, fairy shrimps, and many others also belong to the Crustacea, an ancient group that arose in the early Cambrian nearly 600 million years ago. Staff Joel W. Martin

9. Zootaxa; Crustacea Phylogenetic relationships among the genera of the Penaeidae (crustacea Decapoda) revealed by mitochondrial 16S rRNA gene sequences http://www.mapress.com/zootaxa/taxa/Crustacea.html

ZOOTAXA Home Online issues Editor Author ... Subscription Crustacea GET Acrobat Reader for viewing PDF files Editor, Dr S.T. Ahyong Marine Biodiversity and Biosecurity, NIWA, Private Bag 14901, Kilbirnie, Wellington, New Zealand Editor, Dr P. Castro Brachyura Biological Sciences Department, California State Polytechnic University, Pomona CA 91768, USA Editor, Dr J. Goy Caridea Department of Biology, Harding University, 900 E. Center Ave., Box 12251 Searcy, Arkansas 72149-0001 USA Editor, Dr D. S. Jones Thecostraca (Cirripedia and others) Western Australian Museum, Francis Street, Perth, Western Australia 6000 (Australia) Editor, Dr G.S. Karaman Amphipoda P.O.Box 40, 81000 Podgorica, Montenegro, Yugoslavia Editor, Dr Karanovic, Tom Copepoda University of Tasmania, School of Zoology, Private Bag 5, Hobart Tasmania 7001, Australia

10. ITIS Standard Report Page: Crustacea Article/Chapter Title Chapter 1 Classification of the Recent crustacea The Biology of crustacea, vol. 1 Systematics, the Fossil Record, http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=83

11. Recognized Species Of Of Dinoflagellates And Affiliated Taxa That The occurrence of Thalassomyces fagei (Ellobiopsidae) in euphausiids (crustacea Malacostraca) in the northeast Atlantic and northern North Sea. J. Mar. http://www.vims.edu/~jeff/dinos.htm

Recognized species of of dinoflagellates and affiliated taxa that parasitize crustaceans and their respective host species. From: Shields, J.D. 1994. The parasitic dinoflagellates of marine crustaceans. Ann. Rev. Fish Diseases BLASTODINIDA Blastodinidae Click here to see Blastodinium in a host copepod Blastodinium Chatton, 1906 B. apsteini Sewell, 1951 Clausocalanus arcuicornis (Dana), C. furcatus (Brady), Paracalanus aculeatus Giesbrecht B. chattoni Sewell, 1951 Clausocalanus arcuicornis (Dana), C. furcatus (Brady), Nannocalanus minor (Claus), Paracalanus aculeatus Giesbrecht, P. denudatus Sewell, P. parvus (Claus), Cosmocalanus (=Undinula) darwini (Lubbock) B. contortum Chatton, 1908 Acartia clausi Giesbrecht, Acrocalanus gracilis Giesbrecht Calocalanus styliremis Giesbrecht, Clausocalanus arcuicornis Dana, Clausocalanus furcatus (Brady), Eucalanus pileatus Giesbrecht, Eucheata wolfendeni Scott, Nannocalanus minor (Claus), Paracalanus aculeatus Giesbrecht, P. denudatus Sewell, P. parvus (Claus), Cosmocalanus darwini (Lubbock) B. crassum

12. World List Of Marine, Freshwater And Terrestrial Isopod Crustaceans: National Mu World list of Marine, Freshwater and Terrestrial crustacea Isopoda. National Museum of Natural History Smithsonian Institution Washington D.C., http://invertebrates.si.edu/isopod/

Smithsonian National Museum of Natural History Search Field: Search Submit: Advanced Search Plan Your Visit Exhibitions Education ... Calendar Department of Invertebrate Zoology Dynamenella perforata is a shallow-water sphaeromatid isopod which inhabits intertidal coral rubble and algae. It has also been found living under the chiton Acanthopleura granulata . Distribution of D. perforata (View a higher resolution version of this image.) IZ Home Research Collections ... Isopods World List of Marine, Freshwater and Terrestrial Isopod Crustaceans About the World List Search the World List Browse the World List Search the Bibliography ... Isopod Multimedia Armadillidium nasatum What is an Isopod? Links to other isopod websites Schotte, M. 2006. Roly-Poly Lifestyles. Wings - Essays in Invertebrate Conservation. 29(2): 22-27 Please cite this database as: Schotte, M., B. F. Kensley, and S. Shilling. (1995 onwards). World list of Marine, Freshwater and Terrestrial Crustacea Isopoda. National Museum of Natural History Smithsonian Institution: Washington D.C., USA. http://www.nmnh.si.edu/iz/isopod/

13. Crustacea - Definition Of Crustacea By The Free Online Dictionary, Thesaurus And Definition of crustacea in the Online Dictionary. Meaning of crustacea. What does crustacea mean? crustacea synonyms, crustacea antonyms. http://www.thefreedictionary.com/Crustacea

Domain='thefreedictionary.com' word='Crustacea';WordListHost='w3.thefreedictionary.com' Printer Friendly 847,600,957 visitors served. TheFreeDictionary Google Word / Article Starts with Ends with Text subscription: Dictionary/ thesaurus Medical dictionary Legal dictionary Financial dictionary Acronyms Idioms Encyclopedia Wikipedia encyclopedia Hutchinson ... encyclopedia Crustacea Also found in: Medical Encyclopedia Wikipedia Hutchinson 0.03 sec. write_ads(AdsNum, 0) Thesaurus Legend: Synonyms Related Words Antonyms Noun Crustacea - class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas class Crustacea Arthropoda phylum Arthropoda - jointed-foot invertebrates: arachnids; crustaceans; insects; millipedes; centipedes crustacean - any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton Malacostraca subclass Malacostraca - largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies order Stomatopoda Stomatopoda - mantis shrimps Entomostraca subclass Entomostraca - in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia; no longer in technical use

14. Wonders Of The Sea: Crustaceans the insects, and the crustaceans. The largest group of marine arthropods is the class crustacea, made up of approximately 30000 species. http://www.oceaninn.com/guides/crustacea.htm

Oceanside Meadows Innstitute for the Arts and Sciences presents: Wonders of the Sea: Crustaceans Crustacean: A class of arthropods Seventy-five percent of all animals belong to phylum Arthropoda. Arthropods include the chelicerates (horseshoe crabs, spiders, mites, etc.), the insects, and the crustaceans. The largest group of marine arthropods is the class Crustacea, made up of approximately 30,000 species. Members of the Class include lobsters, crabs, shrimps, krill, hermit crabs, copepods and many other groups of organisms. It is convenient to divide crustaceans into two groups, the entomostracans and the malacostraceans. The entomostracans include the smaller species, such as fairy shrimp, water fleas, copepods, and barnacles. The malacostaceans include the larger, more familiar crustaceans, such as crabs, shrimp, and lobsters. What do all crustaceans have in common? All crustaceans have an exoskeleton made of the protein chitin and calcium. This external shell, in addition to being protective, gives rigid support for the attachment of the muscles. The exoskeleton is made of separate plates connected by thin membranes. This segmented exoskeleton creates joints, allowing the crustacean to move its body and appendages. Typically, the body of crustaceans is divided into two sections: the head and the trunk. The head has five pairs of appendages: two pairs of antennae and three feeding appendages, composed of one pair of mandibles and two pairs of maxillae. The trunk is usually divided into the thorax and the abdomen. In many crustaceans a shell called the carapace covers the head and thorax. Crustaceans respirate via gills, located where the legs attach to the thorax.

15. Illinois Natural History Survey | Crustacean Collection The Illinois Natural History Survey crustacean Collection is one of the largest state collections of crustaceans in North America. http://www.inhs.uiuc.edu/cbd/collections/crustacean/crustaceanintro.html

INHS Homepage CRUSTACEAN Crustacean Collection Home Curators DATABASES Search the Collection Crustacea by County RESOURCES Illinois Crustacea Crustacea Links INHS Collections CBD Homepage Welcome The Illinois Natural History Survey Crustacean Collection is one of the largest state collections of crustaceans in North America. A few specimens now housed in the collection were collected in the late 1800's by Stephen A. Forbes. They formed the basis for the first article to appear in the Survey's Bulletin "List of Illinois Crustacea." More specimens were collected during the first half of the 1900's in conjunction with the insect surveys organized by Herbert H. Ross. A large part of the collection comes from specimens collected from 1972 to 1982 for Lawrence M. Page's "The Crayfishes and Shrimps (Decapoda) of Illinois" published in 1985. The collection contains primary types of six species. The collection contains about 83,000 specimens (over 10,000 lots) of approximately 300 species in 26 families. Almost all are from North America. About 50% of the collection is from Illinois; the remainder is mostly from the southeastern United States. The best represented groups are crayfishes, shrimps, scuds, slaters, and pill bugs.

16. Lindernia Crustacea - Lindernia (Plantaginaceae) - Plants Of Hawaii Images of Lindernia crustacea Lindernia (Scrophulariaceae). http://www.hear.org/starr/hiplants/images/thumbnails/html/lindernia_crustacea.ht

Plants of Hawaii Family Index Species Index Lindernia crustacea Lindernia ( Plantaginaceae Non-Native Also placed in Scrophulariaceae Google: images information Bishop Museum: information specimens Smithsonian: information specimens NTBG: specimens HEAR: information Images by Image use policy Comments? Questions? Send e-mail to: starrimages@hear.org This page was created on November 01, 2002 by Starr , and was last updated on March 29, 2008 by Starr HEAR USGS Starr

17. Nearctica - Natural History - Crustaceans The class crustacea comprises the majority of the marine species of the arthropods, although there are also many freshwater species and even a few http://www.nearctica.com/nathist/chelic/gcrab.htm

Chelicerata - Crustaceans Special Segments Butterflies of North America Conifers of North America Eastern Birds List of N.A. Insects Home Eastern Wildflowers General Topics Natural History Ecology Family Environment Evolution Home Education Home Conservation Geophysics Paleontology Commercial Organizations The class Crustacea comprises the majority of the marine species of the arthropods, although there are also many freshwater species and even a few terrestrial ones such as the common sowbug. The most familiar crustaceans are the shrimps, crabs, and lobsters, but the diversity of the crustaceans in form and biology ranges from the gigantic king crab of the Pacific Ocean to a myriad of planktonic forms comprising the dominant herbivores of the ocean. Although the external form is exceedingly diverse, most crustaceans can be identified by two pairs of antennae. You can get a feel for this diversity by visiting some of the sites below with photographs and figures from the various groups. A short synopsis of the major groups of the crustaceans is given below. The groups without common names are not likely to be encountered. This page has the sites with general information on the crustaceans. There is also a page covering

18. AllPosters.com - The World's Largest Poster And Print Store! www.allposters.com/ gallery.asp?aid=940871 apnum=119093 DestType=7 crustacea Posters at AllPosters.comcrustacea Posters - at AllPosters.com. Choose from over 500000 Posters Art Prints. Value Framing, Fast Delivery, 100% Satisfaction Guarantee. http://www.allposters.com/gallery.asp?aid=940871&apnum=119093&DestType=7

19. Crustacea - LoveToKnow 1911 crustacea, a very large division of the animal kingdom, comprising the familiar crabs, lobsters, crayfish, shrimps and prawns, the sandhoppers and woodlice, http://www.1911encyclopedia.org/Crustacea

Crustacea From LoveToKnow 1911 CRUSTACEA, a very large division of the animal kingdom, comprising the familiar crabs, lobsters, crayfish , shrimps and prawns, the sandhoppers and woodlice, the strangely modified barnacles and the minute water-fleas. Besides these the group also includes a multitude of related forms which, from their aquatic habits and generally inconspicuous size, and from the fact that they are commonly neither edible nor noxious, are little known except to naturalists and are undistinguished by any popular names. Collectively, they are ranked as one of the classes forming the sub-phylum Arthropoda , and their distinguishing characters are discussed under that heading. It will be sufficient here to define them as Arthropoda for the most part of aquatic habits, having typically two pairs of antenniform appendages in front of the mouth and at least three pairs of post-oral limbs acting as jaws. As a matter of fact, however, the range of structural variation within the group is so wide, and the modifications due to parasitism and other causes are so profound, that it is almost impossible to frame a definition which shall be applicable to all the members of the class. In certain parasites, for instance, the adults have lost every trace not only of Crustacean but even of Arthropodous structure, and the only

20. Bromeliad Biota - Phytotelmata - Crustacea crustacea in bromeliad phytotelmata. Colonization of bromeliads by crustacea Classification and distribution of bromeliadinhabiting crustacea http://bromeliadbiota.ifas.ufl.edu/crbrom.htm

Bromeliad Biota Bromeliad Phytotelmata Bromeliad Terraria Carnivorous Bromeliads Crustacea in Bromeliad Phytotelmata Wolfgang Janetzky D-26111 Oldenburg, Germany The information on these pages should be cited as follows: Janetzky, W. 1997. Crustacea in bromeliad phytotelmata. Published on WWW at http://BromeliadBiota.ifas.ufl.edu/crbrom.htm Anyone wishing to use any part of the following Wolfgang Janetzky: JANETZKY@hrz2.uni-oldenburg.de Ostracoda - seed shrimps Cladocera - waterfleas Copepoda - copepods Brachyura - crabs ... References Next Page Return to Bromeliad Phytotelmata Return to Bromeliad Biota

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