Genetic diversity, endemism and phylogeny of lampreys within the genus Lampetra sensu stricto (Petromyzontiformes: Petromyzontidae) in western North America
Citation
Boguski et al. 2012. Genetic diversity, endemism and phylogeny of lampreys within the genus Lampetra sensu stricto (Petromyzontiformes: Petromyzontidae) in western North America. Journal of Fish Biology 81, 1891–1914
doi:10.1111/j.1095-8649.2012.03417.x, available online at wileyonlinelibrary.com
Summary
Phylogenetic structure of four Lampetra species from the Pacific drainage of North America (western brook lamprey Lampetra richardsoni, Pacific brook lamprey Lampetra pacifica, river lamprey Lampetra ayresii and Kern brook lamprey Lampetra hubbsi ) and unidentified Lampetra specimens (referred to as Lampetra sp.) from 36 locations was estimated using the mitochondrial cytochrome b gene. Maximum parsimony and Bayesian inferences did not correspond with any taxonomic scheme proposed to date. Rather, although L. richardsoni (from Alaska to California) and L. ayresii (from British Columbia to California) together constituted a well-supported clade distinct from several genetically divergent Lampetra populations in Oregon and California, [...]
Summary
Phylogenetic structure of four Lampetra species from the Pacific drainage of North America (western
brook lamprey Lampetra richardsoni, Pacific brook lamprey Lampetra pacifica, river lamprey
Lampetra ayresii and Kern brook lamprey Lampetra hubbsi ) and unidentified Lampetra specimens
(referred to as Lampetra sp.) from 36 locations was estimated using the mitochondrial cytochrome b
gene. Maximum parsimony and Bayesian inferences did not correspond with any taxonomic scheme
proposed to date. Rather, although L. richardsoni (from Alaska to California) and L. ayresii (from
British Columbia to California) together constituted a well-supported clade distinct from several
genetically divergent Lampetra populations in Oregon and California, these two species were not
reciprocally monophyletic. The genetically divergent populations included L. pacifica (from the
Columbia River basin) and L. hubbsi (from the Kern River basin) and four Lampetra sp. populations
in Oregon (Siuslaw River and Fourmile Creek) and California (Kelsey and Mark West
Creeks). These four Lampetra sp. populations showed genetic divergence between 2·3 and 5·7%
from any known species (and up to 8·0% from each other), and may represent morphologically
cryptic and thus previously undescribed species. A fifth population (from Paynes Creek, California)
may represent a range extension of L. hubbsi into the Upper Sacramento River.
