WoRMS taxon details
Amphidinium klebsii Kofoid & Swezy, 1921
109735 (urn:lsid:marinespecies.org:taxname:109735)
accepted
Species
marine, brackish, terrestrial
Kofoid, C.A.; Swezy, O. (1921). The free-living unarmored Dinoflagellata. <em>Memoirs of the University of California.</em> 5: i-viii, 1-562., available online at https://www.biodiversitylibrary.org/page/20306447 [details] 
LSID urn:lsid:algaebase.org:taxname:108979
Description The body is subcylindrical (dorsoventrally compressed?), rounded posteriorly, subtruncate anteriorly with the middle...
LSID urn:lsid:algaebase.org:taxname:108979 [details]
Description The body is subcylindrical (dorsoventrally compressed?), rounded posteriorly, subtruncate anteriorly with the middle...
Description The body is subcylindrical (dorsoventrally compressed?), rounded posteriorly, subtruncate anteriorly with the middle portion drawn out in a slender tongue deflected to the left. The length of the body is 1.72 transdiameters at the widest part. The tongue-shaped portion at the anterior end is the epicone, which is separated from the rest of the body by the wide girdle. The exact limits of the girdle and epicone are not shown in Klebs 's figures (1884). Its length above the base of the girdle is about 0.2 of the total length of the body, its width about 0.35 transdiameter. The hypocone is subcylindrical (flattened dorsoventrally?) with its sides subparallel for the middle third of their extent, rounded above and below. The antapex is broad and slightly rounded, while anteriorly the sides of the hypocone below the girdle swell forward and outward, forming wide, high shoulders, the left one narrower than the right. The girdle is a wide circle embracing the narrow, necklike portion at the anterior end of the body. Its width is about 0.25 transdiameter. Its proximal border, as well as the sulcus, and the connections of girdle and sulcus are not indicated in Klebs 's figures (1884). The longitudinal flagellum arises a short distance below the probable point of union of girdle and sulcus. The transverse flagellum arises in his figure on the right dorsal side of the body, a condition unparalleled in the dinoflagellates and one which is probably an error of drawing or interpretation. The nucleus is a large, spherical body occupying the posterior half of the hypocone. Its axis is 0.43 transdiameter in length. The cytoplasm is filled with spherules of varying size and long, tapering chromatophores (?), which radiate forward and outward from the region of the nucleus in the posterior part of the body. The color of the organism is not noted by Klebs. The surface is apparently marked by a few longitudinal furrows or striae extending the length of the hypocone. [details]
Guiry, M.D. & Guiry, G.M. (2024). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Amphidinium klebsii Kofoid & Swezy, 1921. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=109735 on 2024-04-24
Date
action
by
2007-10-17 15:07:21Z
changed
db_admin
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original description
Kofoid, C.A.; Swezy, O. (1921). The free-living unarmored Dinoflagellata. <em>Memoirs of the University of California.</em> 5: i-viii, 1-562., available online at https://www.biodiversitylibrary.org/page/20306447 [details]
basis of record Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. <em>Acta Bot. Croat.</em> 64(1): 129-212. [details]
additional source Guiry, M.D. & Guiry, G.M. (2023). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
additional source Tomas, C.R. (Ed.). (1997). Identifying marine phytoplankton. Academic Press: San Diego, CA [etc.] (USA). ISBN 0-12-693018-X. XV, 858 pp., available online at http://www.sciencedirect.com/science/book/9780126930184 [details]
additional source Brandt, S. (2001). Dinoflagellates, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 47-53 (look up in IMIS) [details]
additional source Campbell, P.H. (1973). Studies on brackish water phytoplankton. UNC.SG.73.07. pp. 1-406. Chapel Hill: Sea Grant Publications, University of North Carolina. [details] Available for editors
[request]
additional source Moestrup, Ø., Akselman, R., Cronberg, G., Elbraechter, M., Fraga, S., Halim, Y., Hansen, G., Hoppenrath, M., Larsen, J., Lundholm, N., Nguyen, L. N., Zingone, A. (Eds) (2009 onwards). IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae., available online at http://www.marinespecies.org/HAB [details]
source of synonymy Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. <em>Acta Bot. Croat.</em> 64(1): 129-212. [details]
basis of record Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. <em>Acta Bot. Croat.</em> 64(1): 129-212. [details]
additional source Guiry, M.D. & Guiry, G.M. (2023). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
additional source Tomas, C.R. (Ed.). (1997). Identifying marine phytoplankton. Academic Press: San Diego, CA [etc.] (USA). ISBN 0-12-693018-X. XV, 858 pp., available online at http://www.sciencedirect.com/science/book/9780126930184 [details]
additional source Brandt, S. (2001). Dinoflagellates, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 47-53 (look up in IMIS) [details]
additional source Campbell, P.H. (1973). Studies on brackish water phytoplankton. UNC.SG.73.07. pp. 1-406. Chapel Hill: Sea Grant Publications, University of North Carolina. [details] Available for editors
[request] additional source Moestrup, Ø., Akselman, R., Cronberg, G., Elbraechter, M., Fraga, S., Halim, Y., Hansen, G., Hoppenrath, M., Larsen, J., Lundholm, N., Nguyen, L. N., Zingone, A. (Eds) (2009 onwards). IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae., available online at http://www.marinespecies.org/HAB [details]
source of synonymy Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. <em>Acta Bot. Croat.</em> 64(1): 129-212. [details]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
LSID urn:lsid:algaebase.org:taxname:108979 [details]From regional or thematic species database
Description The body is subcylindrical (dorsoventrally compressed?), rounded posteriorly, subtruncate anteriorly with the middle portion drawn out in a slender tongue deflected to the left. The length of the body is 1.72 transdiameters at the widest part. The tongue-shaped portion at the anterior end is the epicone, which is separated from the rest of the body by the wide girdle. The exact limits of the girdle and epicone are not shown in Klebs 's figures (1884). Its length above the base of the girdle is about 0.2 of the total length of the body, its width about 0.35 transdiameter. The hypocone is subcylindrical (flattened dorsoventrally?) with its sides subparallel for the middle third of their extent, rounded above and below. The antapex is broad and slightly rounded, while anteriorly the sides of the hypocone below the girdle swell forward and outward, forming wide, high shoulders, the left one narrower than the right. The girdle is a wide circle embracing the narrow, necklike portion at the anterior end of the body. Its width is about 0.25 transdiameter. Its proximal border, as well as the sulcus, and the connections of girdle and sulcus are not indicated in Klebs 's figures (1884). The longitudinal flagellum arises a short distance below the probable point of union of girdle and sulcus. The transverse flagellum arises in his figure on the right dorsal side of the body, a condition unparalleled in the dinoflagellates and one which is probably an error of drawing or interpretation. The nucleus is a large, spherical body occupying the posterior half of the hypocone. Its axis is 0.43 transdiameter in length. The cytoplasm is filled with spherules of varying size and long, tapering chromatophores (?), which radiate forward and outward from the region of the nucleus in the posterior part of the body. The color of the organism is not noted by Klebs. The surface is apparently marked by a few longitudinal furrows or striae extending the length of the hypocone. [details]Diagnosis A small species, with subcylindrical body, its length 1.72 transdiameters; girdle anterior ; chromatophores (?). Length, 46μm. Bay of Naples, early spring months. [details]
Identification The species Amphidinium klebsii Kofoid and Swezy was based on a description by Klebs (1884) (as A. operculatum), which differed from A. operculatum in the anterior position of the sulcus, ‘‘tongue-like’’ epicone, more posterior radiation of the plastids, and the possession of ‘‘furrows’’or corrugations on the cell surface. Some authors have considered A. klebsii to be a synonym of A. operculatum (Dodge 1982, Larsen 1985, Hoppenrath 2000b). Many authors have reported A. klebsii, however, to our knowledge, in none of the specimens have corrugations on the surface been found. An organism with these characteristics has apparently not been reported since its original description, and we therefore include it here as a species requiring further confirmation. [details]
