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WoRMS taxon detailsTrichormus variabilis (Kützing ex Bornet & Flahault) Komárek & Anagnostidis, 1989
146661 (urn:lsid:marinespecies.org:taxname:146661)
accepted
Species
Anabaena variabilis Kützing ex Bornet & Flahault, 1886 · unaccepted (synonym)
Anabaena variabilis f. typica Elenkin, 1938 · unaccepted (synonym)
Not documented
LSID urn:lsid:algaebase.org:taxname:60396
LSID urn:lsid:algaebase.org:taxname:60396 [details] Description Mats flat, mucilaginous, blackish or dark blue-green, with irregularly and usually densely arranged filaments. Filaments...
Description Mats flat, mucilaginous, blackish or dark blue-green, with irregularly and usually densely arranged filaments. Filaments without sheaths and usually without special gelatinous envelopes; trichomes cylindrical, irregularly coiled, constricted at the cross-walls, not attenuated or slightly narrowed at the ends. Cells barrel-shaped or subspherical, isodiametric or slightly shorter or longer than wide without gas vesicles, 2.5-6 x (3) 4-6 μm; terminal cells conical-rounded. Heterocytes intercalary, solitary, ± spherical or slightly elongated and oval, 6-8.5 x 5-6 (7) μm. Akinetes arise distant from the heterocytes, oval, longer than wide, in rows, 8-15 x (6) 7-9.5 (11) μm, with smooth, colourless to yellow-brown cell wall. — Variable species, from which were described several subspecific taxa (f. crasser Voronichin 1923, f. tentassima Gruia 1963), which can belong probably to a few different genospecies (genetic units, Fig. 11214 Particularly types with clearly elongated cells and akinetes 4-9 x 4.5-6.8 μm (see e.g., El-Ayouty & al. 1977 from Egypt), or var. cylindrarea Playfair 1918 (cells 4-6 x 3 μm, heterocytes 7.5-10.5 x 4-5 μm, akinetes 7.5-10 x 5-6 μm) are probably separate species. A good review of the variability of Anabaena (= Trichormus) variabilis was published by Fjerdingstad (1969). — Many populations were isolated in cultures and several of them are commonly used as model strains. Important nitrogen fixer. [details] Distribution Terrestrial species, occurring on wet soils and possibly also in periodical shallow and brackish waters; considered...
Distribution Terrestrial species, occurring on wet soils and possibly also in periodical shallow and brackish waters; considered cosmopolitan, but different populations (particularly from water biotopes) can belong to different genotypes. [details] Distribution geographic region not obtained; recorded as being found in the Bay of Fundy
Distribution geographic region not obtained; recorded as being found in the Bay of Fundy [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). Trichormus variabilis (Kützing ex Bornet & Flahault) Komárek & Anagnostidis, 1989. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=146661 on 2024-06-19
Date action by 2005-01-27 09:58:12Z created db_admin Copyright notice: the information originating from AlgaeBase may not be downloaded or replicated by any means, without the written permission of the copyright owner (generally AlgaeBase). Fair usage of data in scientific publications is permitted.
basis of record
Guiry, M.D. & Guiry, G.M. (2024). 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 Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details] additional source Linkletter, L. E. (1977). A checklist of marine fauna and flora of the Bay of Fundy. <em>Huntsman Marine Laboratory, St. Andrews, N.B.</em> 68: p. [details] additional source Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. <em>China Science Press.</em> 1267 pp. (look up in IMIS) [details] Available for editors  [request]  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:60396 [details]From regional or thematic species database
Description Mats flat, mucilaginous, blackish or dark blue-green, with irregularly and usually densely arranged filaments. Filaments without sheaths and usually without special gelatinous envelopes; trichomes cylindrical, irregularly coiled, constricted at the cross-walls, not attenuated or slightly narrowed at the ends. Cells barrel-shaped or subspherical, isodiametric or slightly shorter or longer than wide without gas vesicles, 2.5-6 x (3) 4-6 μm; terminal cells conical-rounded. Heterocytes intercalary, solitary, ± spherical or slightly elongated and oval, 6-8.5 x 5-6 (7) μm. Akinetes arise distant from the heterocytes, oval, longer than wide, in rows, 8-15 x (6) 7-9.5 (11) μm, with smooth, colourless to yellow-brown cell wall. — Variable species, from which were described several subspecific taxa (f. crasser Voronichin 1923, f. tentassima Gruia 1963), which can belong probably to a few different genospecies (genetic units, Fig. 11214 Particularly types with clearly elongated cells and akinetes 4-9 x 4.5-6.8 μm (see e.g., El-Ayouty & al. 1977 from Egypt), or var. cylindrarea Playfair 1918 (cells 4-6 x 3 μm, heterocytes 7.5-10.5 x 4-5 μm, akinetes 7.5-10 x 5-6 μm) are probably separate species. A good review of the variability of Anabaena (= Trichormus) variabilis was published by Fjerdingstad (1969). — Many populations were isolated in cultures and several of them are commonly used as model strains. Important nitrogen fixer. [details]Distribution Terrestrial species, occurring on wet soils and possibly also in periodical shallow and brackish waters; considered cosmopolitan, but different populations (particularly from water biotopes) can belong to different genotypes. [details] From other sources
Diet phytosynthetic based on chlorophyll a [details]Distribution geographic region not obtained; recorded as being found in the Bay of Fundy [details] Habitat pelagic or attached to various marine life [details] Predators marine microorganisms and animal larvae [details] Reproduction asexual reproduction [details] remark heterocystous, nitrogen fixing filamentous form [details]
Published in AlgaeBase
 (from synonym Anabaena variabilis Kützing ex Bornet & Flahault, 1886)Published in AlgaeBase Published in AlgaeBase (from synonym Anabaena variabilis f. typica Elenkin, 1938)To Barcode of Life (1 barcode) (from synonym Anabaena variabilis Kützing ex Bornet & Flahault, 1886) To Biodiversity Heritage Library (93 publications) (from synonym Anabaena variabilis Kützing ex Bornet & Flahault, 1886) To European Nucleotide Archive, ENA (Trichormus variabilis) To GenBank (264 nucleotides; 7165 proteins) To GenBank (264 nucleotides; 7165 proteins) (from synonym Anabaena variabilis Kützing ex Bornet & Flahault, 1886) To PESI (from synonym Anabaena variabilis Kützing ex Bornet & Flahault, 1886) To PESI |
