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Lampetra ayresii is a species of lamprey in the family Petromyzontidae.It is also called the river lamprey or western river lamprey.It is found in the eastern Pacific, specifically from Tee Harbor, Juneau in Alaska to the Sacramento–San Joaquin drainage in California, USA.
The mucus and serum of several lamprey species, including the Caspian lamprey (Caspiomyzon wagneri), river lampreys (Lampetra fluviatilis and L. planeri), and sea lamprey (Petromyzon marinus), are known to be toxic, and require thorough cleaning before cooking and consumption. [101] [102]
The European river lamprey has a reproduction cycle similar to that of salmon. River lampreys migrate upstream from the sea to spawning grounds in autumn and winter. [11] [12] [13] Spawning activity is greatest in the springtime (like the brook lamprey) and after spawning, the adults die. The young larvae, known as ammocoetes, spend several ...
Lampetra zanandreai, the Lombardy lamprey, is a species of lamprey in the Petromyzontidae family. It is found in Croatia, Italy, and Slovenia. Its natural habitats are rivers and freshwater springs. It is threatened by habitat loss.
Mordacia praecox, the Australian brook lamprey or nonparasitic lamprey, is a freshwater species of southern topeyed lamprey that occurs in south-eastern Australia. It has a thin eel-like body around 12 to 15 cm (4.7 to 5.9 in) long, with two low dorsal fins on the back half. The skin is dark blue above and grey below.
The adults of several lamprey species, including those of the lake lamprey, are hematophagous predators that latch onto other fish species to feed on their bodily fluids. Young salmonids such as cutthroat trout and the coho salmon are common prey. Wounds have been known to penetrate into the body cavity of hosts, though the majority of prey are ...
Pacific lamprey (Entosphenus tridentatus) Chestnut lamprey (Icthyomyzon castaneus) Northern brook lamprey (Icthyomyzon fossor) Silver lamprey (Icthyomyzon unicuspis) Western river lamprey (Lamptera ayresii) Western brook lamprey (Lamptera richardsoni) American brook lamprey (Lethenteron appendix) Arctic lamprey (Lethenteron camtschaticum)
The eggs of adults are preyed on by various species of fish and crayfish. [8] Southern brook lampreys in the larval stage serve as prey for a wide range of fish and bird species. [8] Adult forms are preyed upon by larger fish species such as the Northern pike (E. lucius), perch species, the European chub (S. cephalus), and the mudpuppy (N ...