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CaRMS taxon details

Aphanizomenon flosaquae Ralfs ex Bornet & Flahault, 1886

609460  (urn:lsid:marinespecies.org:taxname:609460)

accepted
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marine, brackish, fresh, terrestrial
Not documented
LSID urn:lsid:algaebase.org:taxname:97658  
LSID urn:lsid:algaebase.org:taxname:97658 [details]

Description Trichomes free-floating, aggregated in parallel in elongated, band-like colonies, up to 2 cm long and 3 mm wide,...  
Description Trichomes free-floating, aggregated in parallel in elongated, band-like colonies, up to 2 cm long and 3 mm wide, olive-green, flexuous. Trichomes straight or bent, cylindrical, slightly constricted at the cross-walls, isopolar, on both ends with long, cylindrical, terminal cells, at the ends cylindrical-rounded. Cells cylindrical to slightly barrel-shaped, ± isodiametric with olive-green protoplast and numer¬ous aerotopes, 4-12.1 x 4.4-8 μm; apical cells elongated and up to 24.3 gm long, without aerotopes, almost hyaline, usually with characteristic remains of cytoplasm in form of an irregular, lengthwise string. Heterocytes intercalary, solitary, usu¬ally 1 (up to 3) in a trichome, cylindrical, 10-18 x 5-8.5 μm. Akinetes intercalary, long cylindrical, distant from heterocytes, 40-220 x 6-10.8 μm. — Several varieties and forms were described, the taxonomic position of which is unclear (var. hercynium Kützing ex Forti 1907, var. haerdtlii Fjerdingstad 1966, f. incurvatum Černov 1950, f. macrosporum Fedorov 1970). The var. minus Nair probably does not belong to Aphanizomenon[details]

Distribution Freshwater, in eutrophic reservoirs, light adapted (in water with high transparency and usually accompanied with large...  
Distribution Freshwater, in eutrophic reservoirs, light adapted (in water with high transparency and usually accompanied with large species of zooplankton), often in almost monospecific populations; common, but only in temperate zones of both hemispheres, all data from tropical regions are misinterpretations. [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). Aphanizomenon flosaquae Ralfs ex Bornet & Flahault, 1886. Accessed through: Nozères, C., Kennedy, M.K. (Eds.) (2024) Canadian Register of Marine Species at: https://www.marinespecies.org/carms/aphia.php?p=taxdetails&id=609460 on 2024-03-28
Nozères, C., Kennedy, M.K. (Eds.) (2024). Canadian Register of Marine Species. Aphanizomenon flosaquae Ralfs ex Bornet & Flahault, 1886. Accessed at: https://www.marinespecies.org/carms/aphia.php?p=taxdetails&id=609460 on 2024-03-28
Date
action
by
2012-09-03 10:56:51Z
created
2015-06-26 12:00:51Z
changed

basis of record 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]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
LSID urn:lsid:algaebase.org:taxname:97658 [details]

From regional or thematic species database
Description Trichomes free-floating, aggregated in parallel in elongated, band-like colonies, up to 2 cm long and 3 mm wide, olive-green, flexuous. Trichomes straight or bent, cylindrical, slightly constricted at the cross-walls, isopolar, on both ends with long, cylindrical, terminal cells, at the ends cylindrical-rounded. Cells cylindrical to slightly barrel-shaped, ± isodiametric with olive-green protoplast and numer¬ous aerotopes, 4-12.1 x 4.4-8 μm; apical cells elongated and up to 24.3 gm long, without aerotopes, almost hyaline, usually with characteristic remains of cytoplasm in form of an irregular, lengthwise string. Heterocytes intercalary, solitary, usu¬ally 1 (up to 3) in a trichome, cylindrical, 10-18 x 5-8.5 μm. Akinetes intercalary, long cylindrical, distant from heterocytes, 40-220 x 6-10.8 μm. — Several varieties and forms were described, the taxonomic position of which is unclear (var. hercynium Kützing ex Forti 1907, var. haerdtlii Fjerdingstad 1966, f. incurvatum Černov 1950, f. macrosporum Fedorov 1970). The var. minus Nair probably does not belong to Aphanizomenon[details]

Distribution Freshwater, in eutrophic reservoirs, light adapted (in water with high transparency and usually accompanied with large species of zooplankton), often in almost monospecific populations; common, but only in temperate zones of both hemispheres, all data from tropical regions are misinterpretations. [details]

Harmful effect Producer of the neurotoxin anatoxin-a and PSP [details]

Remark Heterocysts, nitrogen fixing filamentous form [details]

From other sources
Environment Freshwater algae, N. India [details]
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