peritricha

per·i·trich

P0197700 (pĕr′ĭ-trĭk′)n. pl. per·i·trichs also pe·rit·ri·cha (pə-rĭt′rĭ-kə) Any of various protozoans, such as the vorticella, having a wide oral opening surrounded by cilia.

[From New Latin Peritrichida, former order name : peri- + Greek thrix, trikh-, hair.]

peritricha

(pəˈrɪtrɪkə) pl n, sing peritrich (ˈpɛrɪˌtrɪk) 1. (Zoology) ciliate protozoans, of the order Peritrichida, in which the cilia are restricted to a spiral around the mouth2. (Microbiology) bacteria having the entire cell surface covered with flagella[C19: from New Latin, from peri- + Greek thrix hair] peˈritrichous adj

Peritricha

a subclass of protozoans of class Infusoria.

The body in Peritricha is bell-shaped. A broad oral disk bears spiral rows of cilia. Feeding is phagotrophic. Reproduction is by longitudinal fission. There are two orders, comprising more than 1,000 species. The majority are sessile (order Sessilida), either solitary (for example, Vorticella) or colonial (Zoothamnium); they attach themselves to the substrate by means of a basal disk, pedicel, or shell. A ciliate ring serves for locomotion in the motile forms (in the sessile forms it appears temporarily in the motile embryos, or zoospores). Motile Peritricha (order Mobilida) use a broad ring of grasping hooks for temporary attachment to a substrate. Peritricha inhabit both fresh waters and marine. The sessile forms live on any firm substrate, including aquatic plants and animals. The motile forms live only on animals (from coelenterates to amphibians) or their viscera. During periods of massive reproduction, Trichodina and representatives of closely related genera do damage to the integuments of their animal hosts (especially of fish fry), causing possible illness or death.

A. V. IANKOVSKII

单词	peritricha
释义	peritricha per·i·trich P0197700 (pĕr′ĭ-trĭk′)n. pl. per·i·trichs also pe·rit·ri·cha (pə-rĭt′rĭ-kə) Any of various protozoans, such as the vorticella, having a wide oral opening surrounded by cilia. [From New Latin Peritrichida, former order name : peri- + Greek thrix, trikh-, hair.] peritricha (pəˈrɪtrɪkə) pl n, sing peritrich (ˈpɛrɪˌtrɪk) 1. (Zoology) ciliate protozoans, of the order Peritrichida, in which the cilia are restricted to a spiral around the mouth2. (Microbiology) bacteria having the entire cell surface covered with flagella[C19: from New Latin, from peri- + Greek thrix hair] peˈritrichous adj Peritricha Peritricha a subclass of protozoans of class Infusoria. The body in Peritricha is bell-shaped. A broad oral disk bears spiral rows of cilia. Feeding is phagotrophic. Reproduction is by longitudinal fission. There are two orders, comprising more than 1,000 species. The majority are sessile (order Sessilida), either solitary (for example, Vorticella) or colonial (Zoothamnium); they attach themselves to the substrate by means of a basal disk, pedicel, or shell. A ciliate ring serves for locomotion in the motile forms (in the sessile forms it appears temporarily in the motile embryos, or zoospores). Motile Peritricha (order Mobilida) use a broad ring of grasping hooks for temporary attachment to a substrate. Peritricha inhabit both fresh waters and marine. The sessile forms live on any firm substrate, including aquatic plants and animals. The motile forms live only on animals (from coelenterates to amphibians) or their viscera. During periods of massive reproduction, Trichodina and representatives of closely related genera do damage to the integuments of their animal hosts (especially of fish fry), causing possible illness or death. A. V. IANKOVSKII MedicalSeeperitrichThesaurusSeeperitrichous
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