Rahul Sharma (Editor)

Decapoda

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Kingdom  Animalia
Superorder  Eucarida
Phylum  Arthropoda
Higher classification  Eucarida
Subphylum  Crustacea
Scientific name  Decapoda
Length  Red king crab: 1.8 m
Rank  Order
Decapoda Palaeos Arthropods Crustacea Malacostraca Decapoda
Lower classifications  Crab, Caridean Shrimp, Lobster, Anomura, Hermit crab

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The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish, crabs, lobsters, prawns, and shrimp. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3000 species) and Anomura (including hermit crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossil decapod is the Devonian Palaeopalaemon.

Contents

Decapoda Decapoda Crabs Shrimp Lobsters Wildlife Journal Junior

Anatomy

Decapoda Database of Crustacea Decapoda Stomatopoda

As the name Decapoda (from the Greek δέκα, deca-, "ten", and πούς / ποδός, -pod, "foot") implies, all decapods have what are considered ten legs, in the form of five pairs of thoracic appendages on the last five thoracic segments. Decapods can have as many as twenty apendages, arranged in one pair per body segment. The front three pairs function as mouthparts and are generally referred to as maxillipeds; the remainder are pereiopods. In many decapods, however, one pair of "legs" has enlarged pincers; the claws are called chelae, so those legs may be called chelipeds. The remaining appendages are found on the abdomen, with each segment capable of carrying a pair of biramous pleopods, the last of which form part of the tail fan (together with the telson) and are called uropods.

Classification

Decapoda httpsuploadwikimediaorgwikipediacommonsthu

Classification within the order Decapoda depends on the structure of the gills and legs, and the way in which the larvae develop, giving rise to two suborders: Dendrobranchiata and Pleocyemata. The Dendrobranchiata consist of prawns, including many species colloquially referred to as "shrimp", such as the "white shrimp", Litopenaeus setiferus. The Pleocyemata include the remaining groups, including "true shrimp". Those groups which usually walk rather than swim (Pleocyemata, excluding Stenopodidea and Caridea) form a clade called Reptantia.

This classification to the level of superfamilies follows De Grave et al.

Order Decapoda Latreille, 1802

Decapoda Palaeos Arthropods Crustacea Malacostraca Decapoda
  • Suborder Dendrobranchiata Bate, 1888
  • Penaeoidea Rafinesque, 1815
  • Sergestoidea Dana, 1852
  • Suborder Pleocyemata Burkenroad, 1963
  • Infraorder Stenopodidea Bate, 1888
  • Infraorder Caridea Dana, 1852
  • Procaridoidea Chace & Manning, 1972
  • Galatheacaridoidea Vereshchaka, 1997
  • Pasiphaeoidea Dana, 1852
  • Oplophoroidea Dana, 1852
  • Atyoidea De Haan, 1849
  • Bresilioidea Calman, 1896
  • Nematocarcinoidea Smith, 1884
  • Psalidopodoidea Wood-Mason, 1874
  • Stylodactyloidea Bate, 1888
  • Campylonotoidea Sollaud, 1913
  • Palaemonoidea Rafinesque, 1815
  • Alpheoidea Rafinesque, 1815
  • Processoidea Ortmann, 1896
  • Pandaloidea Haworth, 1825
  • Physetocaridoidea Chace, 1940
  • Crangonoidea Haworth, 1825
  • Infraorder Astacidea Latreille, 1802
  • Enoplometopoidea de Saint Laurent, 1988
  • Nephropoidea Dana, 1852
  • Astacoidea Latreille, 1802
  • Parastacoidea Huxley, 1879
  • Infraorder Glypheidea Winckler, 1882
  • Glypheoidea Winckler, 1882
  • Infraorder Axiidea de Saint Laurent, 1979b
  • Infraorder Gebiidea de Saint Laurent, 1979
  • Infraorder Achelata Scholtz & Richter, 1995
  • Infraorder Polychelida Scholtz & Richter, 1995
  • Infraorder Anomura MacLeay, 1838
  • Aegloidea Dana, 1852
  • Galatheoidea Samouelle, 1819
  • Hippoidea Latreille, 1825a
  • Chirostyloidea Ortmann, 1892
  • Lithodoidea Samouelle, 1819
  • Lomisoidea Bouvier, 1895
  • Paguroidea Latreille, 1802
  • Infraorder Brachyura Linnaeus, 1758
  • Section Dromiacea De Haan, 1833
  • Dromioidea De Haan, 1833
  • Homolodromioidea Alcock, 1900
  • Homoloidea De Haan, 1839
  • Section Raninoida De Haan, 1839
  • Section Cyclodorippoida Ortmann, 1892
  • Section Eubrachyura de Saint Laurent, 1980
  • Subsection Heterotremata Guinot, 1977
  • Aethroidea Dana, 1851
  • Bellioidea Dana, 1852
  • Bythograeoidea Williams, 1980
  • Calappoidea De Haan, 1833
  • Cancroidea Latreille, 1802
  • Carpilioidea Ortmann, 1893
  • Cheiragonoidea Ortmann, 1893
  • Corystoidea Samouelle, 1819
  • Dairoidea Serène, 1965
  • Dorippoidea MacLeay, 1838
  • Eriphioidea MacLeay, 1838
  • Gecarcinucoidea Rathbun, 1904
  • Goneplacoidea MacLeay, 1838
  • Hexapodoidea Miers, 1886
  • Leucosioidea Samouelle, 1819
  • Majoidea Samouelle, 1819
  • Orithyioidea Dana, 1852c
  • Palicoidea Bouvier, 1898
  • Parthenopoidea MacLeay,
  • Pilumnoidea Samouelle, 1819
  • Portunoidea Rafinesque, 1815
  • Potamoidea Ortmann, 1896
  • Pseudothelphusoidea Ortmann, 1893
  • Pseudozioidea Alcock, 1898
  • Retroplumoidea Gill, 1894
  • Trapezioidea Miers, 1886
  • Trichodactyloidea H. Milne-Edwards, 1853
  • Xanthoidea MacLeay, 1838
  • Subsection Thoracotremata Guinot, 1977
  • Cryptochiroidea Paul'son, 1875
  • Grapsoidea MacLeay, 1838
  • Ocypodoidea Rafinesque, 1815
  • Pinnotheroidea De Haan, 1833

  • Decapoda Decapoda Crustacea British Marine Life Study Society Link Page
    Decapoda Decapoda Investigation

    References

    Decapoda Wikipedia


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