Mountain brook lamprey
species of chordates
The mountain brook lamprey or Allegheny brook lamprey (Ichthyomyzon greeleyi) is a lamprey found in parts of the Mississippi River basin as well as New York, Pennsylvania, Ohio, and in the Cumberland and Tennessee Rivers. This fish is jawless with a small sucker mouth and a long, eel-like body. It is fairly small in size, only growing to about 8 inches (20 cm) in length.
The mountain brook lamprey is a non-parasitic lamprey, meaning that they do not attach themselves to larger species of fish. The mountain brook lamprey is believed to have evolved from the parasitic Ohio lamprey (I. bdellium) and occurs, often in abundance, within many of the tributaries of the Ohio and Tennessee River systems. All non-parasitic lampreys require two distinctly different habitats that are connected by free flowing (free of dams) stretches of streams. Adults are found in clear brooks with fast flowing water and either sand or gravel bottoms. Juveniles or ammocoetes are found in slow moving water buried in soft substrate of medium to large streams. In the larval stage before metamorphosis, the lampreys feed on detritus and algae, and after they complete metamorphosis, they obtain energy from stored fat reserves. The spawning season for lampreys is from late April to early May.
“Mountain brook lamprey” enters the record as species of chordates. Crown Archives preserves that source wording while asking what Mountain, brook and lamprey can confirm, complicate or overturn.
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This entry incorporates text from “Mountain brook lamprey” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.