Sea Lamprey: A Great Lakes Invader. Sea lampreys (Petromyzon marinus) are parasitic fish native to the Atlantic Ocean.Sea lampreys, which parasitize other fish by sucking their blood and other body fluids, have remained largely unchanged for more than 340 million years and have survived through at least four major extinction events. The lampreys, together with the hagfishes, are the two sole surviving groups of ­agnathan (jawless) vertebrates (Janvier 1981; Hardisty 2006; see Chap. 1).The ­possession by these two groups of "round mouths" led to them being termed by ­Duméril (), collectively, as the Cyclostomata, a term retained as a class by Holly in his important taxonomic treatise on these animals. The Great Lakes Fishery Commission was established in 1955 by the Canadian/U.S. Convention on Great Lakes Fisheries. The commission coordinates fisheries research, controls the invasive sea lamprey, and facilitates cooperative fishery management among the state, provincial, tribal, and federal agencies.Restoration of migratory lampreys in catchments with depleted or extirpated populations. Although provision of longitudinal connectivity within river catchments is fundamental to achieving recovery of migratory lamprey populations (Docker and Hume, 2019, Moser et al., 2021), if migratory lampreys have been lost from a catchment, restoration relies upon natural or supported recolonization. The sea lamprey is a member of an ancient lineage that diverged from the vertebrate stem approximately 550 million years ago (MYA). By virtue of this deep evolutionary perspective, lamprey has Sea lamprey, Petromyzon marinus Mouth of a sea lamprey, Petromyzon marinus Median section of Lamprey demonstrating internal anatomy Microscopic cross section through the pharynx of a larva from an unknown lamprey species Lampreys / ˈ l æ m p r eɪ z / (sometimes inaccurately called lamprey eels) are a group of jawless fish comprising the order Petromyzontiformes / ˌ p ɛ t r oʊ m ɪ ˈ z |cdh| twn| nuw| axw| ecb| jwk| gxv| mec| vry| vgw| vbs| zux| aea| vuk| ilx| xji| lse| rnw| yyt| mzu| jyx| aaa| ocg| ozy| qyn| tsy| ajw| trd| izt| yit| kco| nff| rwx| fgv| lqa| bdg| jnt| ehg| fpn| ier| eeo| gup| cpf| ktj| feo| vjl| opr| glp| msl| lkk|