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Protists - Living Material
Live specimens are used for a wide variety of studies including studying the physiological effects of drugs on a specimen’s heartbeat and temperature on metabolism, the locomotion of microscopic organisms, and studying plant respiration, photosynthesis, plosmolysis, and more. Algal cultures form colonies of cells that are extremely easy to visualize for better understanding of cell walls and plastids, and many live specimens reproduce rapidly for quick turnover between successive tests.
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Microspora
Freshwater. Filamentous; H-shaped cell walls. Soil-water medium.
Characterized by green plastids and cell walls composed of cellulose.
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Selanastrum, Tube Culture
Freshwater. Unicellular; lunate. Proteose agar.
Characterized by green plastids and cell walls composed of cellulose.
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Staurastrum
Freshwater. Unicellular; triangular desmid. Basic culture solution. Characterized by green plastids and cell walls composed of cellulose.
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Stigeoclonium
Freshwater. Filamentous. Produces zoospores. Basic culture solution.
Characterized by green plastids and cell walls composed of cellulose.
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Ward's® Thalassiosira
Marine. Unicellular; brackish, centric cells. Marine medium.
Characterized by shells (tests) made of silica, in two parts.
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Navicula
Freshwater. Unicellular; pennate, with bilateral symmetry. Basic culture solution.
Characterized by shells (tests) made of silica, in two parts.
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Bangia
Marine. Filamentous; unbranched thallus. Erdschreiber’s medium.
Characterized by reddish plastids (rhodoplasts).
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Ward's® Phacus
Freshwater. Unicellular; heart-shaped cell. Soil-water medium.
Characterized by a lack of rigid cellulosic walls, instead these organisms have pellicles made of protein. They store paramylon instead of starch.
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Porphyridium
Marine. Unicellular. Erdschreiber’s medium.
Characterized by reddish plastids (rhodoplasts).
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Coccolithophora
Marine. Unicellular; contains same pigments as other Golden Algae but contains haptonema, unique to Haptophyceae. Coccoid, from coccoliths. Marine medium. Characterized by golden yellow plastids.
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Laminaria
Marine. Macroalga. Kelp. Large specimen. Collected.
Kelp and seaweed; with a distinct set of photosynthetic pigments.
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Ward's® Tetrahymena
Axenic culture. Food organism. Tetrahymena medium.
Characterized by cilia; nearly all possess two types of nuclei.
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Ward's® Pond Protist Mixture, Dry Mix
Produce a Variety of Organisms Simply by Adding Water
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Didinium
Predatory. Feeds on Paramecium caudatum. Hay medium.
Characterized by cilia; nearly all possess two types of nuclei.
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Chilomonas
Two flagella; no chloroplasts. Food organism. Hay medium.
Characterized by flagella; lacks plastids.