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Discosea

March 16, 2024

Discosea is a class of Amoebozoa, consisting of naked amoebae with a flattened, discoid body shape.[1] Members of the group do not produce tubular or subcylindrical pseudopodia, like amoebae of the class Tubulinea. When a discosean is in motion, a transparent layer called hyaloplasm forms at the leading edge of the cell (see lamelliopodium). In some discoseans, short "subpseudopodia" may be extended from this hyaloplasm, but the granular contents of the cell do not flow into these, as in true pseudopodia. Discosean amoebae lack hard shells, but some, like Cochliopodium and Korotnevella secrete intricate organic scales which may cover the upper (dorsal) surface of the cell. No species have flagella or flagellated stages of life.[3][4]

Discosea
Acanthamoeba sp.
Scientific classification
Domain: Eukaryota
Phylum: Amoebozoa
Subphylum: Lobosa
Class: Discosea
Cavalier-Smith et al. 2004[1]
Subclasses and orders[2]

The composition of Discosea is similar to that of the class Flabellinea, proposed by Alexey Smirnov and his collaborators in 2005.[5] However, Discosea is a more comprehensive taxon, including several groups not included in Flabellinea.[6] In 2011, Smirnov et al. accepted Discosea as a class, and reduced Flabellinea to the rank of a subclass with the name Flabellinia.[3]

Taxonomy edit

Class Discosea Cavalier-Smith 2004 stat. nov. Adl et al. 2018[7]

References edit

  1. ^ a b Cavalier-Smith, Thomas; Chao, Ema E. -Y.; Oates, Brian (2004-05-18). "Molecular phylogeny of Amoebozoa and the evolutionary significance of the unikont Phalansterium". European Journal of Protistology. 40 (1): 21–48. doi:10.1016/j.ejop.2003.10.001.
  2. ^ Kang S, Tice AK, Spiegel FW, Silberman JD, Pánek T, Cepicka I, et al. (September 2017). "Between a Pod and a Hard Test: The Deep Evolution of Amoebae". Molecular Biology and Evolution. 34 (9): 2258–2270. doi:10.1093/molbev/msx162. PMC 5850466. PMID 28505375.
  3. ^ a b Smirnov, Alexey V.; Chao, Ema; Nassonova, Elena S.; Cavalier-Smith, Thomas (2011-10-01). "A revised classification of naked lobose amoebae (Amoebozoa: lobosa)". Protist. 162 (4): 545–570. doi:10.1016/j.protis.2011.04.004. ISSN 1618-0941. PMID 21798804.
  4. ^ Adl, Sina M.; Simpson, Alastair G. B.; Lane, Christopher E.; Lukeš, Julius; Bass, David; Bowser, Samuel S.; Brown, Matthew W.; Burki, Fabien; Dunthorn, Micah (2012-09-01). "The revised classification of eukaryotes". The Journal of Eukaryotic Microbiology. 59 (5): 429–493. doi:10.1111/j.1550-7408.2012.00644.x. ISSN 1550-7408. PMC 3483872. PMID 23020233.
  5. ^ Smirnov, Alexey; Nassonova, Elena; Berney, Cédric; Fahrni, José; Bolivar, Ignacio; Pawlowski, Jan (2005-08-01). "Molecular phylogeny and classification of the lobose amoebae". Protist. 156 (2): 129–142. doi:10.1016/j.protis.2005.06.002. ISSN 1434-4610. PMID 16171181.
  6. ^ "Catalogue of Organisms: Discosea: Keeping a Low Profile". coo.fieldofscience.com. Retrieved 2016-05-03.
  7. ^ Adl, Sina M.; Bass, David; Lane, Christopher E.; Lukeš, Julius; Schoch, Conrad L.; Smirnov, Alexey; Agatha, Sabine; Berney, Cedric; Brown, Matthew W. (2018-09-26). "Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes". Journal of Eukaryotic Microbiology. 66 (1): 4–119. doi:10.1111/jeu.12691. PMC 6492006. PMID 30257078.

External links edit

 
Wikispecies has information related to Discosea.

Discosea at Ferry Siemensma's Microworld 2018-03-31 at the Wayback Machine

 
Wikimedia Commons has media related to Discosea.

The order Hismatismenida at Penard.com


 

This Amoebozoa-related article is a stub. You can help Wikipedia by expanding it.

March 16, 2024
discosea, class, amoebozoa, consisting, naked, amoebae, with, flattened, discoid, body, shape, members, group, produce, tubular, subcylindrical, pseudopodia, like, amoebae, class, tubulinea, when, discosean, motion, transparent, layer, called, hyaloplasm, form. Discosea is a class of Amoebozoa consisting of naked amoebae with a flattened discoid body shape 1 Members of the group do not produce tubular or subcylindrical pseudopodia like amoebae of the class Tubulinea When a discosean is in motion a transparent layer called hyaloplasm forms at the leading edge of the cell see lamelliopodium In some discoseans short subpseudopodia may be extended from this hyaloplasm but the granular contents of the cell do not flow into these as in true pseudopodia Discosean amoebae lack hard shells but some like Cochliopodium and Korotnevella secrete intricate organic scales which may cover the upper dorsal surface of the cell No species have flagella or flagellated stages of life 3 4 DiscoseaAcanthamoeba sp Scientific classificationDomain EukaryotaPhylum AmoebozoaSubphylum LobosaClass DiscoseaCavalier Smith et al 2004 1 Subclasses and orders 2 Order Hyalodiscida Order Stereomyxida Order Stygamoebida Subclass Centramoebia Order Centramoebida Order Himatismenida Order Pellitida Subclass Flabellinia Order Dactylopodida Order Dermamoebida Order Thecamoebida Order VannellidaThe composition of Discosea is similar to that of the class Flabellinea proposed by Alexey Smirnov and his collaborators in 2005 5 However Discosea is a more comprehensive taxon including several groups not included in Flabellinea 6 In 2011 Smirnov et al accepted Discosea as a class and reduced Flabellinea to the rank of a subclass with the name Flabellinia 3 Acanthamoeba sp Thecamoeba sp Mayorella Amoebozoa Discosea Taxonomy editClass Discosea Cavalier Smith 2004 stat nov Adl et al 2018 7 Order Hyalodiscida Family Hyalodiscidae Page 1976 non Poche 1913 Order Stereomyxida Grell 1971 Family Stereomyxidae Grell 1966 Order Stygamoebida Smirnov amp Cavalier Smith 2011 Family Stygamoebidae Cavalier Smith amp Smirnov 2011 Subclass Centramoebia Cavalier Smith et al 2016 Order Centramoebida Rogerson amp Patterson 2002 em Cavalier Smith 2004 Family Balamuthiidae Cavalier Smith 2004 Family Acanthamoebidae Sawyer amp Griffin 1975 em Tice et al 2016 Order Himatismenida Page 1987 Cochliopodiida Family Parvamoebidae Cavalier Smith amp Smirnov 2011 Family Cochliopodiidae Taranek 1882 Order Pellitida Page 1987 Family Pellitidae Smirnov amp Kudryavtsev 2005 Family Goceviidae Cavalier Smith amp Smirnov 2011 Subclass Flabellinia Smirnov amp Cavalier Smith 2011 em Kudryavtsev et al 2014 Order Dactylopodida Smirnov et al 2005 Family Paramoebidae Poche 1913 em Kudryavtsev Pawlowski amp Hausmann 2011 Family Vexilliferidae Page 1987 em Kudryavtsev Pawlowski amp Hausmann 2011 Order Dermamoebida Cavalier Smith 2004 em Smirnov amp Cavalier Smith 2011 Family Dermamoebidae Cavalier Smith amp Smirnov 2011 Lingulate amoeba Family Mayorellidae Schaeffer 1926 em Smirnov et al 2011 Order Thecamoebida Schaeffer 1926 em Smirnov amp Cavalier Smith 2011 Family Stenamoebidae Cavalier Smith 2016 Family Thecamoebidae Chatton 1925 em Smirnov et al 2011 striate amp rugose amoeba Order Vannellida Smirnov et al 2005 Family Discamoebidae Bovee amp Jahn 1967 ex Jahn Bovee amp Griffith 1974 Family Vannellidae Bovee 1970 References edit a b Cavalier Smith Thomas Chao Ema E Y Oates Brian 2004 05 18 Molecular phylogeny of Amoebozoa and the evolutionary significance of the unikont Phalansterium European Journal of Protistology 40 1 21 48 doi 10 1016 j ejop 2003 10 001 Kang S Tice AK Spiegel FW Silberman JD Panek T Cepicka I et al September 2017 Between a Pod and a Hard Test The Deep Evolution of Amoebae Molecular Biology and Evolution 34 9 2258 2270 doi 10 1093 molbev msx162 PMC 5850466 PMID 28505375 a b Smirnov Alexey V Chao Ema Nassonova Elena S Cavalier Smith Thomas 2011 10 01 A revised classification of naked lobose amoebae Amoebozoa lobosa Protist 162 4 545 570 doi 10 1016 j protis 2011 04 004 ISSN 1618 0941 PMID 21798804 Adl Sina M Simpson Alastair G B Lane Christopher E Lukes Julius Bass David Bowser Samuel S Brown Matthew W Burki Fabien Dunthorn Micah 2012 09 01 The revised classification of eukaryotes The Journal of Eukaryotic Microbiology 59 5 429 493 doi 10 1111 j 1550 7408 2012 00644 x ISSN 1550 7408 PMC 3483872 PMID 23020233 Smirnov Alexey Nassonova Elena Berney Cedric Fahrni Jose Bolivar Ignacio Pawlowski Jan 2005 08 01 Molecular phylogeny and classification of the lobose amoebae Protist 156 2 129 142 doi 10 1016 j protis 2005 06 002 ISSN 1434 4610 PMID 16171181 Catalogue of Organisms Discosea Keeping a Low Profile coo fieldofscience com Retrieved 2016 05 03 Adl Sina M Bass David Lane Christopher E Lukes Julius Schoch Conrad L Smirnov Alexey Agatha Sabine Berney Cedric Brown Matthew W 2018 09 26 Revisions to the Classification Nomenclature and Diversity of Eukaryotes Journal of Eukaryotic Microbiology 66 1 4 119 doi 10 1111 jeu 12691 PMC 6492006 PMID 30257078 External links edit nbsp Wikispecies has information related to Discosea Discosea at Ferry Siemensma s Microworld Archived 2018 03 31 at the Wayback Machine nbsp Wikimedia Commons has media related to Discosea The order Hismatismenida at Penard com nbsp This Amoebozoa related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Discosea amp oldid 1118094444, wikipedia, wiki, book, books, library,

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