Colonial Organisms definition of Colonial Organisms in the Free Online Encyclopedia.

Colonial Organisms

aquatic organisms, characterized by asexual (vegetative) reproduction, that remain united with the daughter and subsequent generations and form a more or less complex union, or colony. Among colonial plants are various unicellular algae, including blue-green, green, golden-brown, yellow-green, diatomaceous, dinoflagellate, and euglenoid. Depending on the method of formation (reproduction by zoospores or autospores), the colonies are either zoosporic or autosporic.

Colonial animals predominantly include marine invertebrates and lower chordates. Many unicellular animals, or protozoans, are colonial organisms, such as several flagellates, radiolarians, and infusorians. Other colonial invertebrates include many sponges and the majority of coelenterates (including siphonophores). Bryozoans, entoprocts, Rhabdopleura (order Pterobranchia), almost all hydrozoans, many coral polyps and many polypous generations of various scyphozoans are colonial organisms. Synascidiaepyrosomata, salps, and Doliolidae are examples of colonial lower chordates. The extinct graptolites were colonial animals.

Some colonial animals are sessile, such as bryozoans, hydrozoans, coral polyps, and synascidians. These colonies are usually permanently attached to the substrate and have a more or less developed skeleton. Colonial Radiolaria, Siphonophora, Pyrosomata, Doliolidae, and Salpidae, which live in the depths of the sea, are usually semitransparent and lack skeletons.

Many colonial organisms are metagenetic: there is alternation of asexual and sexual generations. Colonial organisms were the intermediate link in the development of multicellular animals from unicellular animals.

D. V. NAUMOV and T. V. SEDOVA

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No references found	[FIGURE 6 OMITTED] Discussion Colonial epifauna Because sessile, colonial organisms cannot avoid the path of mobile fishing gear nor can they quickly immigrate into recently disturbed areas, they may be more adversely affected by bottom fishing than motile species. Changes in a benthic megafaunal community due to disturbance from ... by Asch, Rebecca G.; Collie, Jeremy S. / Fishery Bulletin Metazoan organisms are easy to individuate on this basis, but a variety of biological entities challenge the concrete notion of individuality; for example, some fungi and colonial organisms which lack obvious boundaries. History and Philosophy of Science by Journal of the Mississippi Academy of Sciences	Colombo Colombo Plan Colombo, Emilio Colombo, Matteo Realdo ColOn ColÓn Colon Bacillus colon cancer Colonatus Colonel Colonel Allensworth State Historic Park Colonel Denning State Park colonette Colonia Colonia del Sacramento colonial Colonial architecture Colonial Banks colonial casing Colonial Conference, British Colonial Dorchester State Historic Site Colonial Heights Colonial joint Colonial Michilimackinac State Park & Old Mackinac Point Lighthouse Colonial National Historical Park Colonial Organisms colonial panel door Colonial Parkway Colonial Pemaquid State Historic Site colonial preference Colonial Revival colonial siding Colonial System of Imperialism Colonial Trade Colonial Troops Colonialism Colonies and Colonial Policy Colonies of Microorganisms Colonies, Ancient Colonization Colonna Colonna, Vittoria, marchesa di Pescara Colonnade Colonne, Edouard Colonne, Édouard colonnette colonoscopy Colons Colonsay Colony colony count	Colonial Goose Colonial heads of Spanish Morocco Colonial heads of Spanish Morocco Colonial Heads of Tripolitania Colonial Heads of Tripolitania Colonial Heights Colonial Heights Colonial Heights, VA Colonial Heights, VA Colonial Heights, Virginia Colonial Heights, Virginia Colonial Hills Baptist Church Colonial Hills Christian School Colonial Hills United Methodist Church Colonial home Colonial homes Colonial Jamestown Colonial joint Colonial Latin American Historical Review Colonial Life Insurance Company Colonial Mexico Colonial Mexico Colonial Michilimackinac State Park & Old Mackinac Point Lighthouse Colonial Mutual Life Assurance Society Ltd. Colonial Mutual Superannuation Pty Ltd Colonial National Historic Park Colonial National Historical Park Colonial National Monument Colonial Newsletter Foundation, Inc. Colonial Office Colonial Organisms colonial panel door Colonial Parkway Colonial Pemaquid State Historic Site Colonial Police Meritorious Service Medal Colonial power Colonial power Colonial powers Colonial powers colonial preference colonial preference colonial preference colonial preference Colonial Properties Services Limited Partnership Colonial revival Colonial Revival architecture Colonial rule Colonial rule Colonial School District Colonial Services Board colonial siding Colonial Social Science Research Council Colonial Society of Massachusetts Colonial style Colonial Sugar Refinery Colonial System of Imperialism Colonial trade Colonial Treasure Hunters Association Colonial troops

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[FIGURE 6 OMITTED] Discussion Colonial epifauna Because sessile, colonial organisms cannot avoid the path of mobile fishing gear nor can they quickly immigrate into recently disturbed areas, they may be more adversely affected by bottom fishing than motile species.

Changes in a benthic megafaunal community due to disturbance from ... by Asch, Rebecca G.; Collie, Jeremy S. / Fishery Bulletin

Metazoan organisms are easy to individuate on this basis, but a variety of biological entities challenge the concrete notion of individuality; for example, some fungi and colonial organisms which lack obvious boundaries.

History and Philosophy of Science by Journal of the Mississippi Academy of Sciences

Colombo

Colombo Plan

Colombo, Emilio

Colombo, Matteo Realdo

Colonel Allensworth State Historic Park