Labyrinthulomycetes or Labyrinthulea is a class of protists that produce a network of filaments or tubes, which serve as tracks for the cells to glide along and absorb nutrients for them. The two main
Aplanonet 3
Aplanochytrium sp. under light microscope
Test of Amphitrema, a testate amoeba recently included in the group
The stramenopiles, also called heterokonts, are protists distinguished by the presence of stiff tripartite external hairs. In most species, the hairs are attached to flagella, in some they are attache
Labyrinthulomycetes
…and among the thraustochytrids, they are attached to their sides. Labyrinthulomycetes are not fungi, but a monophyletic group of eukaryotes within the Stramenopiles. They belong to the phylum Bigyra, which contains other heterotrophic microorganisms such as the bicosoecids. Considering that the plastids from…
Electron micrograph of the protist Paraphysomonas butcheri. It illustrates the stramenopile property of having stiff hairs. The hairs attach to one longer flagellum, the other is without hairs. The body is coated with delicate scales. Paraphysomonas feeds on bacteria, two of which lie near the hairy flagellum.
Two living C. roenbergensis. Light micrograph. The cells are about 6 µm long. The anterior flagellum beats with an undulating pattern, the posterior (recurrent or smooth) flagellum usually holds the cell to the substrate.
Giant kelp, Macrocystis pyrifera, an example of a multicellular stramenopile, is a large seaweed, up to 45 metres (150 feet) long, in the Phaeophyceae, within the Gyrista.