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

Ward, David L.; Clemens, Benjamin J.; Clugston, David A.; Jackson, Aaron; Moser, Mary L.; Peery, Chris; Statler, David P.

doi:10.1080/03632415.2012.704818

Cited by 48 publications

(63 citation statements)

References 19 publications

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“…When sampled shortly before hatch (at approximately 8-13 days after fertilization), 0-90 % (average 43.4 %) and 57.8-100 % (average 84.4 %) of the eggs in sea and Pacific lamprey nests, respectively, were found to be viable Ward et al 2012). When sampled shortly before hatch (at approximately 8-13 days after fertilization), 0-90 % (average 43.4 %) and 57.8-100 % (average 84.4 %) of the eggs in sea and Pacific lamprey nests, respectively, were found to be viable Ward et al 2012).…”

Section: Mortality Factors In Different Life Stagesmentioning

confidence: 99%

“…Use of lamprey hatcheries for research or supplementation of wild stocks is underway in Europe (e.g., Finland, Estonia, and Latvia; Sjöberg 2011) and is a management tool being considered in North America (Ward et al 2012). Use of lamprey hatcheries for research or supplementation of wild stocks is underway in Europe (e.g., Finland, Estonia, and Latvia; Sjöberg 2011) and is a management tool being considered in North America (Ward et al 2012).…”

Section: Pheromonesmentioning

confidence: 99%

“…Use of lamprey hatcheries for research or supplementation of wild stocks is underway in Europe (e.g., Finland, Estonia, and Latvia; Sjöberg 2011) and is a management tool being considered in North America (Ward et al 2012). Such efforts to "re-seed" lamprey in areas where populations are diminished or extirpated need to account for the potential effects of pheromone production by the offspring of successful spawners (Ward et al 2012). This could have unforeseen consequences for wild stocks attracted to hatchery effluents.…”

Section: Pheromonesmentioning

confidence: 99%

“…In western North America, studies have shown that fewer than 50 % of adult Pacific lamprey encountering the lower Columbia River hydroelectric dams were able to negotiate the fishways (Moser et al 2002a, b;Keefer et al 2013), and dams in some tributaries (e.g., the Umatilla and Snake rivers) and the upper Columbia River are largely impassable to lampreys (see Ward et al 2012). In the Yakima River subbasin in south-central Oregon, for example, an average of only 20 adult lamprey are now observed returning per year (Patrick Luke, Yakama Nation, Toppenish, WA, personal communication, 2013).…”

Section: Barriers To Passagementioning

confidence: 99%

“…Willamette Falls, located downstream of a number of dams that block passage within the Columbia River basin (see Ward et al 2012), is now the source of the largest tribal harvest in Oregon; harvests are virtually non-existent in the upper Columbia River basin (see Sect. Tribal harvests also have been considerably reduced (due to the dramatic declines experienced in the 1960s; Petersen Lewis 2009); instead of a thousand or more Pacific lamprey per night, for example, a Kurok or Yurok eeler might now only be able to harvest 10-15 (Petersen Lewis 2009).…”

Section: Exploitation By Humansmentioning

confidence: 99%

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Lampreys: Biology, Conservation and Control

Docker¹

2015

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Section: Mortality Factors In Different Life Stagesmentioning

confidence: 99%

Section: Pheromonesmentioning

confidence: 99%

“…Use of lamprey hatcheries for research or supplementation of wild stocks is underway in Europe (e.g., Finland, Estonia, and Latvia; Sjöberg 2011) and is a management tool being considered in North America (Ward et al 2012). Such efforts to "re-seed" lamprey in areas where populations are diminished or extirpated need to account for the potential effects of pheromone production by the offspring of successful spawners (Ward et al 2012). This could have unforeseen consequences for wild stocks attracted to hatchery effluents.…”

Section: Pheromonesmentioning

confidence: 99%

Section: Barriers To Passagementioning

confidence: 99%

Section: Exploitation By Humansmentioning

confidence: 99%

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Lampreys: Biology, Conservation and Control

Docker¹

2015

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Selective fragmentation and the management of fish movement across anthropogenic barriers

Rahel

McLaughlin

2018

Ecological Applications

112

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Disruption of movement patterns due to alterations in habitat connectivity is a pervasive effect of humans on animal populations. In many terrestrial and aquatic systems, there is increasing tension between the need to simultaneously allow passage of some species while blocking the passage of other species. We explore the ecological basis for selective fragmentation of riverine systems where the need to restrict movements of invasive species conflicts with the need to allow passage of species of commercial, recreational, or conservation concern. We develop a trait-based framework for selective fish passage based on understanding the types of movements displayed by fishes and the role of ecological filters in determining the spatial distributions of fishes. We then synthesize information on trait-based mechanisms involved with these filters to create a multidimensional niche space based on attributes such as physical capabilities, body morphology, sensory capabilities, behavior, and movement phenology. Following this, we review how these mechanisms have been applied to achieve selective fish passage across anthropogenic barriers. To date, trap-and-sort or capture-translocation efforts provide the best options for movement filters that are completely species selective, but these methods are hampered by the continual, high cost of manual sorting. Other less effective methods of selective passage risk collateral damage in the form of lower or higher than desired levels of passage. Fruitful areas for future work include using combinations of ecological and behavioral traits to passively segregate species; using taxon-specific chemical or auditory cues to direct unwanted species away from passageways and into physical or ecological traps while attracting desirable species to passageways; and developing automated sorting mechanisms based on fish recognition systems. The trait-based approach proposed for fish could serve as a template for selective fragmentation in other ecological systems.

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Natural Recolonization by Pacific Lampreys in a Southern California Coastal Drainage: Implications for Their Biology and Conservation

Reid

Goodman

2020

N American J Fish Manag

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The historical range of anadromous Pacific LampreyEntosphenus tridentatus includes coastal drainages from Alaska south to northern Baja California. However, there has been a widespread loss of distribution inland due to the construction of dams that form impassable barriers as well as a loss of Pacific Lampreys from some historically occupied drainages in the south. These losses have prompted the consideration of suitable approaches to reestablishing Pacific Lamprey populations through either active intervention or natural processes. While Pacific Lampreys apparently do not home to natal streams, they are thought to use cues that are related to such factors as flow patterns or the presence of ammocoete (larval lamprey) pheromones in offshore river plumes to identify suitable rivers for spawning and rearing. In this report, we present documentation of natural recolonization of the San Luis Obispo drainage by Pacific Lampreys on the central California coast, located 130 km south of the nearest freshwater population of Pacific Lampreys and with no existing ammocoete population. We also review recent observations of adult Pacific Lampreys in other southern rivers, recolonization of the Carmel River following dam removal, and indications that Pacific Lampreys are still using oceanic habitat off southern California. The results of our investigation demonstrate that Pacific Lampreys are fully capable of returning to an isolated drainage from which they have been extirpated and then rapidly reestablishing a viable population of ammocoetes, contradicting the hypothesis that they are dependent on existing ammocoete pheromones or adult sex pheromones to attract adults. These results indicate the importance of proactive management for Pacific Lampreys in drainages within their historical range, even if they are not currently present. The results also demonstrate that recolonization does not necessarily require active reintroduction efforts. Rather, conservation efforts should focus on identifying factors that may have led to the loss of Pacific Lamprey and removing potential impediments in order to facilitate natural recolonization.

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

Cited by 48 publications

References 19 publications

Lampreys: Biology, Conservation and Control

Lampreys: Biology, Conservation and Control

Selective fragmentation and the management of fish movement across anthropogenic barriers

Natural Recolonization by Pacific Lampreys in a Southern California Coastal Drainage: Implications for Their Biology and Conservation

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