Conservation of Native Lampreys

  title={Conservation of Native Lampreys},
  author={Peter S. Maitland and Claude B Renaud and Bernardo Ruivo Quintella and David A. Close and Margaret F. Docker},
Forty-four species of lampreys (Petromyzontidae) are currently recognized: (a) nine species are anadromous and parasitic (i.e., feeding on actinopterygian fishes after metamorphosis); (b) nine species are freshwater resident and parasitic; and (c) 26 species are freshwater resident and non-parasitic (i.e., do not feed at all following metamorphosis). To date, the conservation status of 33 of these species (75 %) has been assessed at a global scale. Of those assessed, at least 12 are deemed at… 

Marine biology of the pacific lamprey Entosphenus tridentatus

It is hypothesize that recruitment of adult lamprey to spawning populations is influenced by oceanographic regimes through impacts on host abundance, and three marine factors that may be limiting lamprey abundance include predation and fisheries bycatch, host availability, and host contaminant loads.

Caspian Lamprey Caspiomyzon wagneri (Petromyzontidae): A Review of Historical and Modern Data

Historical and modern data on the taxonomic status, external morphology, distribution features, biology, economic importance, history of fishing, conservation status, and protection measures for the

Life History Evolution in Lampreys: Alternative Migratory and Feeding Types

  • M. DockerI. Potter
  • Environmental Science, Biology
    Lampreys: Biology, Conservation and Control
  • 2019
The existence of three closely related freshwater parasitic species suggests that Pacific lamprey successfully colonized fresh water in the past, and the “invasion-by-canal” hypothesis appears to be the most convincing, but definitive resolution should be possible with genome-level analyses.

Densities and biomass of larval sea lamprey populations (Petromyzon marinus Linnaeus, 1758) in north-western Spain and data comparisons with other European regions

Results and available data suggest that the largest populations of P. marinus as well as the main fisheries are located throughout the south-western areas of Europe (north-central Portugal, north-western of Spain and west–south-west of France).

Review of the Lampreys of Iran (Family Petromyzontidae)

The systematics, morphology, distribution, biology, economic importance and conservation of the lamprey of Iran are described, the species is illustrated, and a bibliography on this fish in Iran is

Sea Lamprey Petromyzon marinus Biology and Management Across Their Native and Invasive Ranges: Promoting Conservation by Knowledge Transfer

The potential utility of using invasive fish populations to inform conservation practices in native ranges, and how pheromone research could further enhance fish conservation and monitoring are revealed are revealed.

The Southern Hemisphere lampreys (Geotriidae and Mordaciidae)

The taxonomy, distribution, biology, genetics, significance, and threats to these lampreys from over 100 years of written sources are reviewed, complemented by interviews and Indigenous knowledge, in order to synthesise and centralise key information.

Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning-migration obstructions

It is likely that passage past some obstructions is enhanced if high river levels occur during the spawning migration, but there is a need to facilitate passage during all conditions, to improve access to under-exploited spawning and nursery areas.




An extensive European and North American literature is reviewed to provide a detailed and comparative account of lamprey ecology, particularly those riverine stages most likely to be affected by human activity, and points to those areas in which more information is required to form a basis for decision-making with regard to conservation requirements for these species in Ireland.

Biology, management, and conservation of lampreys in North America

The impetus for this book was a petition to list four species of lampreys under the U.S. Endangered Species Act, which was denied in 2004 because of insufficient information, and this decision energized many biologists to gather the scattered existing information on lampreys and to begin new research.

Conservation status of Northern Hemisphere lampreys (Petromyzontidae)

Among the 34 nominal lamprey species in the Northern Hemisphere, ten are endangered; nine are vulnerable at least in part of their range, and one is extinct. The major cause is habitat degradation

Extinction of a Population of Anadromous Parasitic Lamprey, Lampetra tridentata, Upstream of an Impassable Dam

It is concluded that metamorphosed lamprey were unable to survive to maturity and the inability to establish a landlocked population indicated that the transition from an anadromous parasitic life history type to a freshwater parasiticLife history type did not occur as quickly or as easily as previously suggested.

Lampreys of the Iberian Peninsula: distribution, population status and conservation

Analysis of records from all main Iberian rivers before the construction of impassable dams became widespread found that lampreys were consistently present in the upper reaches, and the blocking of the lower stretches of major river basins and the restoration of former spawning sites and larval habitats should be considered as priority measures.

Conservation status of imperiled north American freshwater and diadromous fishes

This list includes 700 extant taxa representing 133 genera and 36 families, a 92% increase over the 364 listed in 1989, and reflects the addition of distinct populations, previously non-imperiled fishes, and recently described or discovered taxa.

Biology of the North American Anadromous Sea Lamprey, Petromyzon marinus

The sea lamprey (Petromyzon marinus) in the western Atlantic Ocean adjacent to North America is usually found within a depth of 200 m between latitudes of 30 and 53° and energy requirements for migration and reproduction are discussed in the context of parental investment.

Critical Habitat and the Conservation Ecology of the Freshwater Parasitic Lamprey, Lampetra macrostoma

A study in 2008 captured very few spawning lamprey in Mesachie Lake, possibly indicating that the population is declining, and it is not known if the size of the population of L. macrostoma has changed since an initial study in the early 1980s.

Factors Influencing the Distribution of Sea Lamprey (Petromyzon marinus) in the Great Lakes

The sea lamprey (Petromyzon marinus) is widely distributed in the Great Lakes but it is absent from or scarce in large parts of the watershed, and parasitic-phase sea lampreys range throughout the lakes, wherever suitable host fishes occur, but probably do not inhabit the western and central basins of Lake Erie to any great extent during summer.

Translocating Adult Pacific Lamprey within the Columbia River Basin: State of the Science

Both translocation programs appear to have increased the number of spawning adults and the presence of larvae and juveniles; however, any subsequent increase in naturally spawning adults will require at least one, and likely more, generations to be realized.