Spatial and temporal variation in marking rates and severity of sea lamprey attacks on salmonines in Lakes Michigan and Huron

Simpkins, Darin G.; Kornis, Matthew S.; Maguffee, Alexander C.; Bence, James R.; Pankow, Kevin W.; Bronte, Charles R.

doi:10.1016/j.jglr.2021.01.002

Cited by 5 publications

(5 citation statements)

References 59 publications

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“…2009; Siwicke and Seitz 2015; Simpkins et al. 2021). Our research adds six new species to the list of fishes that are known to serve as Pacific Lamprey hosts (Clemens et al.…”

Section: Discussionmentioning

confidence: 99%

“…Common marine prey for Western River Lampreys tend to be smaller bodied and include Pacific Herring Clupea pallasii, Northern Anchovy Engraulis mordax, and juvenile Pacific salmon (Beamish 1980;Beamish and Neville 1995;Wade and Beamish 2016). Both parasitic and predatory lampreys can cause high mortality among their common hosts and prey (Beamish and Neville 1995;Simpkins et al 2021).…”

Section: Impact Statementmentioning

confidence: 99%

“…Characteristic round wounds made by parasitic lampreys have been used to identify the species of fish that are parasitized by lampreys (e.g., Orlov et al 2009;Siwicke and Seitz 2015;Simpkins et al 2021). Our research adds six new species to the list of fishes that are known to serve as Pacific Lamprey hosts (Clemens et al 2019;Renaud and Cochran 2019;Quintella et al 2021): American Shad, Chilipepper, Splitnose Rockfish, Shortbelly Rockfish, Dover Sole, and Ragfish (Table 2).…”

Section: Pacific Lamprey Feeding Behaviormentioning

confidence: 99%

“…Both parasitic and predatory lampreys can cause high mortality among their common hosts and prey (Beamish and Neville 1995; Simpkins et al. 2021).…”

Section: Introductionmentioning

confidence: 99%

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Pacific Lamprey and Western River Lamprey marine ecology: Insight from new ocean collections

Weitkamp

Tuttle

Ward

et al. 2023

N American J Fish Manag

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Little is known about the marine ecology of anadromous Pacific Lamprey Entosphenus tridentatus and Western River Lamprey Lampetra ayresii. This information is needed to determine how marine life regulates adult abundances and identify management actions that may benefit declining populations. To address this deficit, we compiled historic data, collected lamprey from marine stock assessment surveys and commercial fisheries, and documented fish with Pacific Lamprey wounds. Pacific Lamprey were most commonly caught by midwater trawls targeting Pacific Hake Merluccius productus along the continental shelf break from northern California to northern Washington. Pacific Lamprey ranged in size from 115 mm total length (TL) and 2.9 g to 714 mm TL and 655g (n = 1,912), and were expected to represent multiple ocean ages. The vast majority (93%) of Pacific Lamprey were small (< 300 mm TL), likely in their first year in marine waters. Growth for small Pacific Lamprey was estimated as 0.37 mm/d and 0.13 g/d over the summer. Gut fullness for Pacific Lamprey was high (5.5% of body weight [BW]), but highly variable for larger individuals (range 0‐55% BW). Our results suggest there is a positive relationship between calendar day and lamprey length and condition factor in most years, while the effect of latitude varies by life stage. We documented Pacific Lamprey wounds on 240 individual fish, representing 16 species, of which 6 species are new lamprey hosts. We had comparably few records for Western River Lamprey (n = 72; mean length = 285.5 mm TL), which were primarily found in surface waters on the continental shelf from northern California to southern British Columbia. Our results have implications for both fisheries and conservation management, including development of best practices for lamprey caught by net fisheries, and using new marine information to inform conservation actions.

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“…2009; Siwicke and Seitz 2015; Simpkins et al. 2021). Our research adds six new species to the list of fishes that are known to serve as Pacific Lamprey hosts (Clemens et al.…”

Section: Discussionmentioning

confidence: 99%

Section: Impact Statementmentioning

confidence: 99%

Section: Pacific Lamprey Feeding Behaviormentioning

confidence: 99%

“…Both parasitic and predatory lampreys can cause high mortality among their common hosts and prey (Beamish and Neville 1995; Simpkins et al. 2021).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pacific Lamprey and Western River Lamprey marine ecology: Insight from new ocean collections

Weitkamp

Tuttle

Ward

et al. 2023

N American J Fish Manag

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show abstract

“…Caroffino and Lenart (2011) and Ebener et al (2020) described these recreational and commercial fisheries in more detail. Mortality from Sea Lamprey is generally low in this area as well (Bronte et al 2007; Kornis et al 2019; Simpkins et al 2021).…”

Section: Methodsmentioning

confidence: 95%

Estimates of adult Lake Trout mortality fromcoded wiretags in a population with developing natural reproduction in southern Lake Michigan

Clark,

Ebener,

Bence

et al. 2023

N American J Fish Manag

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ObjectiveOverfishing and Sea Lamprey Petromyzon marinus predation led to extirpation of Lake Trout Salvelinus namaycush from Lake Michigan in the 1950s. Large populations of hatchery‐reared fish were developed by the 1970s, but natural reproduction was limited until the early 2000s when it began to increase in the southern main basin. Hypothesizing that the relatively low mortality of spawning‐aged fish contributed to this reproductive success, we estimated the total annual mortality rate for this population.MethodsWe used catch curves to estimate the total instantaneous mortality rate Z using coded wire tags, which provided definitive ages. We made separate estimates from fish collected in three on‐going surveys: a spring gill‐net survey, a fall gill‐net spawning survey, and a sport fishery survey.ResultOur estimates of Z ± SE were 0.297 ± 0.019, 0.239 ± 0.009, and 0.205 ± 0.007 for the spring, spawning, and sport fishery surveys, respectively. We suggest that the mean Z ± SE of all survey estimates of 0.247 ± 0.027 would be a reasonable estimate for this population, which equates to a total annual mortality of 22 ± 3%. This estimate is in the low range of rates reported for the species and is in the same range as other populations in the Great Lakes with well‐established natural reproduction.ConclusionWe concluded that these low total mortality rates contributed to the reproductive success in southern Lake Michigan through increasing spawning stock density and age structure and that previous estimates of another important population parameter, the instantaneous natural mortality rate M, were too high. Estimates of M ranged from 0.210 to 0.240 and were based on the Pauly equation, a growth‐ and temperature‐based estimator. We suggest maximum‐age‐based estimators of M are more appropriate for Lake Trout. Several alternative maximum‐age‐based estimators produced estimates for M of 0.132–0.058, all of which are more compatible with our estimate of Z.

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Invasive species control and management: The sea lamprey story

2022

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Spatial and temporal variation in marking rates and severity of sea lamprey attacks on salmonines in Lakes Michigan and Huron

Cited by 5 publications

References 59 publications

Pacific Lamprey and Western River Lamprey marine ecology: Insight from new ocean collections

Pacific Lamprey and Western River Lamprey marine ecology: Insight from new ocean collections

Estimates of adult Lake Trout mortality fromcoded wiretags in a population with developing natural reproduction in southern Lake Michigan

Invasive species control and management: The sea lamprey story

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