the larval stage of lampreys (Petromyzontiformes) which is characterized by the presence of an oral hood and the lack of a sucking disk, teeth and developed eyes. The term is derived from the genus Ammocoetes in which the larvae were placed before it was realized that they were larval lampreys

Dictionary of ichthyology. 2009.

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  • ammocoete — noun A larva of a lamprey …   Wiktionary

  • ammocoete — am·mo·coete …   English syllables

  • ammocoete — noun see ammocoetes …   Useful english dictionary

  • Walter Garstang — (February 9, 1868 February 23, 1949), a Fellow of Lincoln College, Oxford, was a marine biologist and zoologist who was one of the first to study the functional biology of marine invertebrate larvae. His best known works on marine larvae were his …   Wikipedia

  • agnathan — /ag neuh theuhn/, n. 1. any member of the vertebrate class Agnatha. adj. 2. agnathous. [AGNATH(A) + AN] * * * ▪ fish Introduction   any member of the group of primitive, jawless fishes (fish) that includes the lampreys (lamprey) (order… …   Universalium

  • Northern Brook Lamprey — Scientific classification Kingdom: Animalia Phylum …   Wikipedia

  • Petromyzontidae — Pétromyzontidés …   Wikipédia en Français

  • Pronéphros — Le pronéphros est un organe excréteur rudimentaire qui se développe chez tous les vertébrés. Sommaire 1 Fonction 2 Développement 3 Formation et disparition 4 Note historiq …   Wikipédia en Français

  • complex life cycle — a life cycle that consists of more than one stage, e.g. ammocoete and adult …   Dictionary of ichthyology

  • endostyle — a longitudinal ciliated groove on the ventral wall of the pharynx which produces mucus to gather food particles in Amphioxi and the ammocoete stage of Petromyzontiformes. In the latter it changes during development into the thyroid gland. Also… …   Dictionary of ichthyology

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