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Nodularia is a genus of filamentous nitrogen-fixing cyanobacteria, or blue-green algae. [1] They occur mainly in brackish or salinic waters, such as the hypersaline Makgadikgadi Pans, [2] the Peel-Harvey Estuary in Western Australia or the Baltic Sea. Nodularia cells occasionally form heavy algal blooms.
Blue green algae growing on the substrate of a fresh water aquarium. Although colloquially called algae, blue-green algae (BGA) is a type of cyanobacteria. It can present with several different colors. While there are many BGA species, the most common type found in aquaria is referred to as "slime algae".
Klamath AFA is a blue-green algae that has been harvested wild from Upper Klamath Lake since the 1980s and used as a dietary supplement. [ 2 ] [ 3 ] Genome sequencing distinguished and named this isolate as Aphanizomenon flos-aquae MDT14a , [ 4 ] [ 5 ] distinct from other varieties of Aphanizomenon flos-aquae .
The name "cyanobacteria" (from Ancient Greek κύανος (kúanos) 'blue') refers to their bluish green color, [5] [6] which forms the basis of cyanobacteria's informal common name, blue-green algae, [7] [8] [9] although as prokaryotes they are not scientifically classified as algae.
Microcystins—or cyanoginosins—are a class of toxins produced by certain cyanobacteria, commonly known as blue-green algae. [3] Over 250 [4] different microcystins have been discovered so far, of which microcystin-LR is the most common. Chemically they are cyclic heptapeptides produced through nonribosomal peptide synthases. [5]
O. princeps is dark blue green in colour due to the presence of two phycobilin pigments: phycocyanin and phycoerythrin. Individual filaments, called trichomes, are blue green to olive green in colour. Mature trichomes are straight and unconstricted in growth phase.
If you have other health questions or concerns about blue-green algae blooms, please call the Florida Department of Health in Okeechobee County at 772-873-4927.
The protoplast is a light blue-green color, appearing dark or brown due to optical effects of gas-filled vesicles; this can be useful as a distinguishing characteristic when using light microscopy. These vesicles provide the buoyancy necessary for M. aeruginosa to stay at a level within the water column at which they can obtain optimum light ...