toxicyst
Quick Summary
The term "toxicyst" refers to specialized structures found in certain carnivorous protozoans, such as Dileptus. These toxicysts are typically located around the organism's mouth.1
When discharged, a toxicyst expels a filament that can paralyze or kill other microorganisms. This filament is used by the protozoan for capturing food and likely serves as a defensive mechanism as well.1
While the term "toxicyst" specifically relates to these protozoan structures, the broader concept of toxins in biology encompasses poisons produced by bacteria, algae, plants, and animals, playing roles in predation, defense, and population regulation.2
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trichocystToxicysts (in Dileptus and certain other carnivorous protozoans) tend to be localized around the mouth. When discharged, a toxicyst expels a long, nonstriated filament with a rodlike tip, which paralyzes or kills other microorganisms; this filament is used to capture food and, presumably, in defense.
Read MoreToxicysts (in Dileptus and certain other carnivorous protozoans) tend to be localized around the mouth. When discharged, a toxicyst expels a long, nonstriated filament with a rodlike tip, which paralyzes or kills other microorganisms; this filament is used to capture food and, presumably, in defense.
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protozoanMechanisms of food ingestion…types of extrusomes are the toxicysts, which are found in the oral region and release toxins that paralyze the prey.
Read More…types of extrusomes are the toxicysts, which are found in the oral region and release toxins that paralyze the prey.
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