Trochophore

Trochophore

[
right|thumb|trochophore
A - episphere
B - hyposphere
1 - ganglia
2 - apical tuft
3 - prototroch
4 - metatroch
5 - nephridium
6 - anus

8 - gastrointestinal tract
9 - buccal opening
10 - blastocoele]

A trochophore (pronEng|ˈtrɒkəfɔər; also spelled trocophore) is a type of marine larva with several bands of cilia. By moving their cilia rapidly water eddy is created. In this way they control the direction of their movement. Additionally, in this way they attract their food in order to capture it more easily.Trochophores are found in the trochozoan phyla, which include the entoprocts, mollusks, annelids, echiurans, and sipunculans. Together, these make up part of the Lophotrochozoa; it is possible that trochophore larvae were present in the life cycle of the group's common ancestor. Trochophore larvae are often planktotrophic; that is, they feed on plankton.

) showing trochophore on images D-F.
D - early trochophore
E - complete trochophore
F - late trochophore] "
sf - shell field]

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  • Trochophore — signifie « en forme de toupie ». Cet adjectif qualifie la morphologie des larves lophotrochozoaires (dont annélides, mollusques). La larve trochophore possède des cils au pôle apical, sur une plaque ectodermique. Elle possède également… …   Wikipédia en Français

  • trochophore — ● trochophore ou trochosphère adjectif et nom féminin Se dit de la larve nageuse des annélides, en forme de toupie, pourvue d un tube digestif, de deux couronnes ciliées locomotrices et d un pinceau apical. trochophore [tʀɔkɔfɔʀ] n. f. ÉTYM. 1904 …   Encyclopédie Universelle

  • trochophore — [träk′ə fôr΄] n. [Gr trochos, a wheel (see TROCHE) + PHORE] a free swimming ciliated larva of several invertebrate groups, including many marine annelid worms, mollusks, brachiopods, and nemerteans …   English World dictionary

  • trochophore — /trok euh fawr , fohr /, n. Zool. a ciliate, free swimming larva common to several groups of invertebrates, as many mollusks and rotifers. [1890 95; < Gk trochó(s) wheel + PHORE] * * * ▪ larva also called  trochosphere        small, translucent,… …   Universalium

  • trochophore — noun Etymology: ultimately from Greek trochos wheel + pherein to carry more at bear Date: 1892 a free swimming ciliate larva occurring in several invertebrate groups (as the polychaete worms and mollusks) …   New Collegiate Dictionary

  • trochophore — n. [Gr. trochos, wheel; phora, bearing] An invertebrate free swimming larva found in many groups, marine turbellarians, nemerteans, brachiopods, phoronids, bryozoans, mollusks, sipunculids, and annelids, commonly pear shaped and provided with a… …   Dictionary of invertebrate zoology

  • trochophore — Free living ciliated larval form of several different invertebrate phyla …   Dictionary of molecular biology

  • trochophore — noun The free swimming larva of some invertebrates that have a circlet of cilia …   Wiktionary

  • trochophore — troch·o·phore …   English syllables

  • trochophore — troch•o•phore [[t]ˈtrɒk əˌfɔr, ˌfoʊr[/t]] n. zool. a ciliate, free swimming larva common to several groups of invertebrates, as many mollusks and rotifers • Etymology: 1890–95; < Gk trochó(s) wheel + phore …   From formal English to slang

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