Pacific lamprey recolonization of a Pacific Northwest river following dam removal

Jolley, Jeffrey C.; Silver, Gregory S.; Harris, Julianne E.; Whitesel, Timothy A.

doi:10.1002/rra.3221

Cited by 19 publications

(21 citation statements)

References 51 publications

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“…Detection of lamprey from eDNA and electrofishing survey methods were comparable in our study, in general, and E. tridentatus detection rates were similar with detection rates reported for electrofishing in other geographic regions (Dunham et al, ; Jolley et al, ; Reid & Goodman, ). Reid and Goodman () demonstrated that high detection rates can be achieved by electrofishing when sampling single sites at preferred larval habitat at the lower ends of drainages.…”

Section: Discussionsupporting

confidence: 90%

“…Detection of lamprey from eDNA and electrofishing survey methods were comparable in our study, in general, and E. tridentatus detection rates were similar with detection rates reported for electrofishing in other geographic regions (Dunham et al, 2013;Jolley et al, 2018;Reid & Goodman, 2015). Reid and Goodman (2015) is evidence of movement in fall (Beamish & Levings, 1991;Mesa, Weiland, Christiansen, & Peery, 2016).…”

Section: Comparison Of Edna and Electrofishing Surveyssupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

“…To empirically evaluate detections by eDNA and electrofishing, we calculated the proportion of survey reaches where lampreys were detected by each method (identified herein as d unit ) for each river basin. This metric (a measure of naïve occupancy) has been used to assess lamprey distributions in other studies (Jolley, Silver, Harris, & Whitesel, ; Jolley et al, ; Reid & Goodman, ). For Lampetra spp., eDNA and electrofishing d unit estimates did not include one survey reach in the Black River and four survey reaches in the Newaukum River where occupancy status could not be established by electrofishing because electrofishing ceased prior to reaching the upstream terminus (i.e., E. tridentatus were found first).…”

Section: Methodsmentioning

confidence: 99%

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Evaluation of environmental DNA surveys for identifying occupancy and spatial distribution of Pacific Lamprey (Entosphenus tridentatus) and Lampetra spp. in a Washington coast watershed

et al. 2019

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Surveys of environmental DNA (eDNA) have become an important and multifaceted tool for monitoring and identifying distributions and occupancy of aquatic species. This tool is attractive because it is powerful, easy to apply, and provides an alternative to traditional field survey methods. However, validating eDNA survey methods against traditional field survey methods is warranted prior to their application. We used eDNA and electrofishing to survey 10 sites in 3 tributaries of the Chehalis River, Washington, to infer distribution and occupancy of Entosphenus tridentatus and Lampetra spp. Both methods produced similar detection rates for E. tridentatus, and Lampetra spp. were detected at slightly greater frequency with eDNA in the Black River and Skookumchuck River. Within each of the three tributaries, eDNA concentration was negatively related to sample distance from the Chehalis River mainstem for E. tridentatus but not for Lampetra spp., which indicates E. tridentatus and Lampetra spp. may be distributed differently within tributaries. Application of lamprey eDNA data to a multiscale occupancy model indicated high probability of detecting eDNA in water samples and quantitative PCR (qPCR) assays. Broad distribution and high detection of E. tridentatus and Lampetra spp. suggest robust populations inhabit the Chehalis River basin. Our findings suggest eDNA surveys may be comparable to electrofishing for informing lamprey occupancy and distributions. Such sampling is efficient and cost‐effective and we anticipate that eDNA surveys will become a valuable tool in addressing key research and monitoring needs for conservation and restoration of lampreys in general.

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Section: Discussionsupporting

confidence: 90%

“…Detection of lamprey from eDNA and electrofishing survey methods were comparable in our study, in general, and E. tridentatus detection rates were similar with detection rates reported for electrofishing in other geographic regions (Dunham et al, 2013;Jolley et al, 2018;Reid & Goodman, 2015). Reid and Goodman (2015) is evidence of movement in fall (Beamish & Levings, 1991;Mesa, Weiland, Christiansen, & Peery, 2016).…”

Section: Comparison Of Edna and Electrofishing Surveyssupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of environmental DNA surveys for identifying occupancy and spatial distribution of Pacific Lamprey (Entosphenus tridentatus) and Lampetra spp. in a Washington coast watershed

et al. 2019

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“…; Jolley et al. ; Moser and Paradis ). The recolonization of upper reaches that were previously blocked by natural events has also been observed, notably in the North Fork Toutle River following the eruption of Mount St. Helens (Lin et al.…”

mentioning

confidence: 99%

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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Environmental DNA is an effective tool to track recolonizing migratory fish following large‐scale dam removal

et al. 2020

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Environmental DNA (eDNA) has emerged as a potentially powerful tool for use in conservation and resource management, including for tracking the recolonization dynamics of fish populations. We used eDNA to assess the effectiveness of dam removal to restore fish passage on the Elwha River in Washington State (USA). Using a suite of 11 species‐specific eDNA polymerase chain reaction (PCR) assays, we showed that most targeted anadromous species (five Pacific Salmon species and Pacific Lamprey) were able to pass upstream of both former dam sites. Multiscale occupancy modeling showed that the timing and spatial extent of recolonization differed among species during the four years of post‐dam removal monitoring. More abundant species like Chinook Salmon and Coho Salmon migrated farther into the upper portions of the watershed than less abundant species like Pink Salmon and Chum Salmon. Sampling also allowed assessment of potamodromous fish species. Bull Trout and Rainbow Trout, ubiquitous species in the watershed, were detected at all sampling locations. Environmental DNA from Brook Trout, a non‐native species isolated between the dams prior to dam removal, was detected downstream of Elwha dam but rarely upstream of the Glines Canyon Dam suggested that the species has not expanded its range appreciably in the watershed following dam removal. We found that eDNA was an effective tool to assess the response of fish populations to large‐scale dam removal on the Elwha River.

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Pacific lamprey recolonization of a Pacific Northwest river following dam removal

Cited by 19 publications

References 51 publications

Evaluation of environmental DNA surveys for identifying occupancy and spatial distribution of Pacific Lamprey (Entosphenus tridentatus) and Lampetra spp. in a Washington coast watershed

Evaluation of environmental DNA surveys for identifying occupancy and spatial distribution of Pacific Lamprey (Entosphenus tridentatus) and Lampetra spp. in a Washington coast watershed

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

Environmental DNA is an effective tool to track recolonizing migratory fish following large‐scale dam removal

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