lamprey

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lamprey

a jawless fish of the class AGNATHA.
References in periodicals archive ?
Ecological impacts of lampricide treatments on sea lamprey (Petromyzon marinus) ammocoetes and metamorphosed individuals.
australis larval stage ammocoetes are part of the benthic community inhabiting sandy and muddy substrates of the coastal river systems of central southern Chile (Neira, 1984; Jara, 1989).
Lamprey behavior and potential threats to survival of migrating lamprey ammocoetes and macrophthalmia.
For each specimen total preserved length, as well as whether or not the lamprey was in the ammocoetes or adult (i.e., transformed) stage was recorded.
gagei, but these two records were ammocoetes (UWZM 9981, 9982), and from our examination cannot be identified to species with certainty.
Pacific lamprey ammocoetes spend 3-7 years in riverine sediments before metamorphizing into juveniles, migrate downstream to spend 3-4 years in marine waters, and spawn 1 year after re-entering freshwater (Beamish, 1980; Beamish and Levings, 1991).