lamprey
Lampreys (sometimes inaccurately called lamprey eels) are a group of Agnatha, jawless fish comprising the order (biology), order Petromyzontiformes , sole order in the Class (biology), class Petromyzontida. The adult lamprey is characterize ...
s in the family
Petromyzontidae
Petromyzontidae are a family of lampreys native to the Northern Hemisphere, comprising the vast majority of living lampreys. Petromyzontids have the highest number of chromosomes (164–174) among vertebrates.
Genera
* '' Caspiomyzon''
* '' En ...
.
Phylogenetic studies indicate that this genus as presently defined is
polyphyletic
A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as Homoplasy, homoplasies ...
, with species of this genus from
western North America
Western North America is the western edge of the North American continent that borders the Pacific Ocean. It consists of Alaska at the farthest north, down through the western Canadian province of British Columbia, the western U.S. states of Wa ...
forming a clade that forms the
sister group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and ...
to ''
Lethenteron
''Lethenteron'' is a genus of lamprey in the family Petromyzontidae.
Species
There are currently 7 recognized species in this genus:
* '' Lethenteron alaskense'' Vladykov & Kott, 1978 (Alaskan brook lamprey)
* '' Lethenteron appendix'' ( DeKay ...
'', ''
Eudontomyzon
''Eudontomyzon'' is a genus of lamprey in the family Petromyzontidae. Most species are found in Eastern Europe.
Species
There are currently five recognized species in this genus:
* '' Eudontomyzon danfordi'' Regan, 1911 (Carpathian lamprey)
* ...
'', and ''Lampetra sensu stricto'' (eastern North American and European species).
Alves
Alves is a surname that appears to originate both from Portugal and Scotland (in Scotland where a variation of the name can appear as ''Alvis''). It is debatable whether the surname appeared first in one country or the other, since it is more prev ...
Alves
Alves is a surname that appears to originate both from Portugal and Scotland (in Scotland where a variation of the name can appear as ''Alvis''). It is debatable whether the surname appeared first in one country or the other, since it is more prev ...
Lampetra fluviatilis
The European river lamprey (''Lampetra fluviatilis''), also known as the river lamprey or lampern, is a species of freshwater lamprey.
Description
Adult river lampreys measure from in the marine forms and up to in the lake forms. The very elonga ...
'' (
Linnaeus
Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...
,
1758
Events
January–March
* January 1 – Swedish biologist Carl Linnaeus (Carl von Linné) publishes in Stockholm the first volume (''Animalia'') of the 10th edition of ''Systema Naturae'', the starting point of modern zoologic ...
) (European river lamprey)
* ''
Lampetra hubbsi
''Lampetra'' is a genus of lampreys in the family Petromyzontidae.
Phylogenetic studies indicate that this genus as presently defined is polyphyletic, with species of this genus from western North America forming a clade that forms the sister gr ...
Lampetra lanceolata
''Lampetra'' is a genus of lampreys in the family Petromyzontidae.
Phylogenetic studies indicate that this genus as presently defined is polyphyletic, with species of this genus from western North America forming a clade that forms the sister gr ...
'' Kux & H. M. Steiner, 1972 (Turkish brook lamprey)
* ''
Lampetra lusitanica
''Lampetra'' is a genus of lampreys in the family Petromyzontidae.
Phylogenetic studies indicate that this genus as presently defined is polyphyletic, with species of this genus from western North America forming a clade that forms the sister gr ...
Alves
Alves is a surname that appears to originate both from Portugal and Scotland (in Scotland where a variation of the name can appear as ''Alvis''). It is debatable whether the surname appeared first in one country or the other, since it is more prev ...
Lampetra pacifica
''Lampetra'' is a genus of lampreys in the family Petromyzontidae.
Phylogenetic studies indicate that this genus as presently defined is polyphyletic, with species of this genus from western North America forming a clade that forms the sister gr ...
'' Vladykov 1973 (Pacific brook lamprey)
* ''
Lampetra planeri
The brook lamprey (''Lampetra planeri''), also known as the European brook lamprey and the western brook lamprey is a small European lamprey species that exclusively inhabits freshwater environments. The species is related to, but distinct from, ...
'' (
Bloch
Bloch is a surname of German origin. Notable people with this surname include:
A
*Adele Bloch-Bauer (1881–1925), Austrian entrepreneur
*Albert Bloch (1882–1961), American painter
*Alexandre Bloch (1857–1919), French painter
*Alfred Bloch ( ...
, 1784) (European brook lamprey)
* ''
Lampetra richardsoni
The western brook lamprey (''Lampetra richardsoni'') is a small (<18 cm), widely distributed, non-parasitic species of