
Monactinus Biwae
monactinus biwae
Monactinus Biwae is a beautiful, microscopic green alga renowned for its striking star-like geometric symmetry. Operating as a free-floating colonial organism, it consists of a single-layered disc of cells precisely arranged in concentric rings. This microalga plays a vital role in freshwater food webs, serving as a primary producer that converts solar energy into organic matter while oxygenating its aquatic environment.
Lebensraum: Inhabits the open waters of freshwater lakes, reservoirs, and slow-moving rivers, thriving as a component of floating phytoplankton.
Aussehen
Under a microscope, Monactinus Biwae resembles a green, wheel-like structure or gear. It forms flat, disc-shaped colonies (coenobia) typically consisting of 8, 16, 32, or 64 cells. The inner cells are polygonal and fit tightly together, while each outer cell is characterized by a single, prominent, outward-pointing horn or spine, giving the entire colony a starburst appearance. The cells are rich in green chlorophyll, which gives them a vibrant, grass-green coloration.

Kategorie
PflanzenSeltenheit
Common
Gefahr
1/5 · Sehr gering
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Interessante Fakten
It is named after Lake Biwa in Japan, the country's largest freshwater lake, where it was historically studied in detail.
Its outer cells feature a single horn-like projection, which distinguishes the genus Monactinus from its close relative Pediastrum, which typically has two.
The number of cells in a colony is determined at birth and does not increase; individual cells simply grow larger as the colony matures.
Besondere Fähigkeiten
Geometric Light Capture
The flat, single-layered disc structure maximizes surface area exposure to sunlight, optimizing the efficiency of its photosynthetic process.
Vesicular Self-Assembly
During reproduction, motile zoospores gather inside a temporary vesicle and spontaneously align into a perfect geometric colony before developing cell walls.
Resilient Outer Wall
The cell wall contains robust, decay-resistant biopolymers that protect the colony from sudden osmotic shifts and physical damage.
Maße und Details
- Länge
- 0 cm
- Gelegegröße
- 8-64
Ernährung und Fütterung
As a photosynthetic organism, it manufactures its own food using sunlight, carbon dioxide, and dissolved inorganic nutrients from the water.
Hauptnahrung
- Sunlight
- Carbon dioxide
- Dissolved nitrates
- Dissolved phosphates
Nahrungssuche
- Photosynthesis
Ökologische Zusammenhänge
Common Water Flea
Daphnia pulex
Serves as a vital source of nutrition for filter-feeding zooplankton.
Microcystis
Microcystis aeruginosa
Competes for dissolved phosphorus and nitrogen in freshwater lakes.
Merkmale
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Sicherheit
Gefahr
1/5 · Sehr gering
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Häufig gestellte Fragen
Wie identifiziert man Monactinus Biwae?
Der einfachste Weg, Monactinus Biwae zu bestimmen, ist die Verwendung der Naturführer-App Snappit.
Was ist der/die/das länge von Monactinus Biwae?
0 cm
Was frisst Monactinus Biwae?
As a photosynthetic organism, it manufactures its own food using sunlight, carbon dioxide, and dissolved inorganic nutrients from the water.
Wo findet man Monactinus Biwae normalerweise?
Inhabits the open waters of freshwater lakes, reservoirs, and slow-moving rivers, thriving as a component of floating phytoplankton.
Wie jagt Monactinus Biwae?
Photosynthesis
Was ist der/die/das gelegegröße von Monactinus Biwae?
8-64
Snap-Karte
Zoome hinein, um Cluster aufzulösen und zu sehen, wo dieses Objekt fotografiert wurde.
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