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 portrait
Petalomonas (pet-al-owe-moan-ass), rigid heterotrophic (no plastids) euglenid, one emerging flagellum which points in front of the moving cells. The flagellum starts within the flagellar pocket (also called the reservoir) extends through a flagellar canal and out at or near the apex of the cell. Either absorbs soluble food or consumes small particles although no mouth is visible by light microscopy. Most species have longitudinal or slightly spiral ridges or folds. Mode of feeding is not clear. Common in freshwater and marine ecosystems. Differential interference contrast. This picture was taken by David Patterson, Linda Amaral Zettler and Virginia Edgcomb of materials from sediments of the marine site, Eel Pond in Austumn 2000, spring and summer 2001. Image copyright: D. J. Patterson, L. Amaral-Zettler and V. Edgcomb, image used under license to MBL (micro*scope).
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Petalomonas
From the collection
Eel Pond, Woods Hole, Massachusetts
| Description of Petalomonas: Sphenomonadine euglenids, colourless, phagotrophic and/or osmotrophic, rigid, fusiform or triangular, flattened cells, usually very flat and leaf-shaped, mostly with strong ribs or keels; no special ingestion organelle visible by light microscopy but some species, at least, have a simple feeding apparatus visible by electron-microscopy; canal opening subapical with one emergent flagellum, directed anteriorly, straight, during swimming; second flagellum non-emergent; paramylon abundant; freshwater and marine, mainly benthic, in mud sediments, cosmopolitan; Scytomonas was purportedly distinguished by having a single flagellum and no reduced second flagellum in the reservoir although a reduced basal body may have been overlooked; cells assigned to Scytomonas have a simple feeding pocket and are known to indulge in sexuality - two cells fuse as isogametes, one flagellum is lost and the zygote swims by means of the other; the gamete nuclei fuse but meiosis and further stages have not been seen, type species P. abscissa (Dujardin, 1841) Stein, 1859. |
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Petalomonas in other collections
Petalomonas abscissa, from
Heterotrophic flagellates of marine habitats
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Petalomonas boadicea, from
Heterotrophic flagellates of marine habitats
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Petalomonas cantuscygni, from
Heterotrophic flagellates of marine habitats
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Petalomonas carinata, from
Heterotrophic flagellates of marine habitats
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Petalomonas coxydensis, from
Heterotrophic flagellates of marine habitats
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Petalomonas excavata, from
Heterotrophic flagellates of marine habitats
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Petalomonas intortus, from
Heterotrophic flagellates of marine habitats
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Petalomonas iugosus, from
Heterotrophic flagellates of marine habitats
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Petalomonas labrum, from
Heterotrophic flagellates of marine habitats
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Petalomonas marginalis, from
Heterotrophic flagellates of marine habitats
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Petalomonas micra, from
Heterotrophic flagellates of marine habitats
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Petalomonas minor, from
Heterotrophic flagellates of marine habitats
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Petalomonas minuta, from
Heterotrophic flagellates of marine habitats
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Petalomonas ornata, from
Heterotrophic flagellates of marine habitats
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Petalomonas phacoides, from
Heterotrophic flagellates of marine habitats
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Petalomonas planus, from
Heterotrophic flagellates of marine habitats
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Petalomonas poosilla, from
Heterotrophic flagellates of marine habitats
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Petalomonas raiula, from
Heterotrophic flagellates of marine habitats
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Petalomonas spinifera, from
Heterotrophic flagellates of marine habitats
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Petalomonas virgatus, from
Heterotrophic flagellates of marine habitats
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Petalomonas involuta, from
Protozoan biomonitors in China
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Petalomonas mediocanellata, from
Protozoan biomonitors in China
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Petalomonas pusilla, from
Protozoan biomonitors in China
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Petalomonas steinii, from
Protozoan biomonitors in China
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Petalomonas pusilla, from
Drawings of heterotrophic euglenids
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Petalomonas intortus, from
Drawings of flagellates
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Petalomonas spinifera, from
Drawings of flagellates
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Petalomonas virgatus, from
Drawings of flagellates
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Petalomonas, from
ATOL protistology workshop 2005
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Petalomonas, from
Protsville drawings of freshwater protists
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Petalomonas, from
Little Sippewissett salt marsh, Massachusetts, USA
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Petalomonas poosilla, from
Little Sippewissett salt marsh, Massachusetts, USA
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Petalomonas, from
Lamont Pond, freshwater, New York
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Petalomonas, from
Freshwater microbes - NW Australia
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Petalomonas minuta, from
Marine euglenids - NW Australia
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Petalomonas pusilla, from
Marine euglenids - NW Australia
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Petalomonas, from
Prawn Farm, Queensland, Australia
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Petalomonas, from
American Type Culture Collection
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Petalomonas, from
Pitcher Plants, Florida, USA
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Petalomonas, from
Lake Toolik, Arctic Alaska
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Petalomonas abscissa, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas intortus, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas iugosus, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas labrum, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas marginalis, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas minor, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas minutus, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas planus, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas poosilla, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas raiula, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas spinifera, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas virgatus, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas marginalis, from
Heterotrophic flagellates of Botany Bay, Sydney, Australia
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Petalomonas, from
Prawn Farm, Queensland, Australia
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