ammocoete


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ammocoete

[′a·mə‚sēt]
(zoology)
A protracted larval stage of lampreys.
References in periodicals archive ?
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).
Eyed lampreys were identified to species by dentition; ammocoetes, in which developing eyes are covered with skin, were grouped into a single category.
Lamprey behavior and potential threats to survival of migrating lamprey ammocoetes and macrophthalmia.