Evaluation of sea lamprey-associated mortality sources on a generalized lake sturgeon population in the Great Lakes

Dobiesz, Norine E.; Bence, James R.; Sutton, Trent M.; Ebener, Mark P.; Pratt, Thomas C.; O’Connor, Lisa; Steeves, Todd B.

doi:10.1016/j.jglr.2018.01.005

Cited by 13 publications

(13 citation statements)

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“…The success of these measures remains unclear but highlights the need to establish measures to protect juvenile lake sturgeon from the adverse effects of TFM. Reducing the concentrations of TFM applied to streams containing YOY lake sturgeon has previously been tried, but this resulted in increased numbers of residual lampreys that survived treatment, ultimately leading to increased parasitic juvenile lamprey populations and greater damage to fisheries ( Dobiesz et al , 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…In fact, lake sturgeon themselves would be more vulnerable to predation because they too are a target of parasitic sea lamprey ( Patrick et al , 2009 ). Using generalized linear models, Dobiesz et al (2018 ) recently demonstrated that the benefits of protecting age-0 lake sturgeon by suspending TFM treatments of their nursery streams would be greatly outweighed by the increased mortality of sub-adults (age, 7–24) due to increased sea lamprey attacks. Although suspending lampricide applications to systems containing sturgeon streams would increase adult sturgeon populations by 5.7% in the Great Lakes, they demonstrated that increased sea lamprey parasitism of sub-adults could ultimately lead to reductions in adult lake sturgeon populations of up to 37% ( Dobiesz et al , 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…Lawrence drainage designated as threatened by Federal and State legislation in Canada and the USA ( Hayes and Caroffino, 2012 ; COSEWIC, 2017 ). There have also been concerns that lake sturgeon’s sensitivity to TFM, and its vulnerability to sea lamprey parasitism, particularly in the early juvenile stages could undermine efforts to conserve and restore lake sturgeon populations ( Patrick et al , 2009 ; Hayes and Caroffino, 2012 ; O’Connor et al , 2017 ; Dobiesz et al , 2018 ). Several studies have examined the effects of TFM on lake sturgeon survival ( Boogaard et al , 2003 ; O’Connor et al , 2017 ), physiology and behaviour ( Middaugh et al , 2014 ; Sakamoto et al , 2016 ; Hepditch et al , 2019 ) and TFM-detoxification ( Bussy et al , 2017a , b ), but none has addressed the mechanism of TFM toxicity, acute effects of TFM exposure on metabolic processes in these fish or the potential effects on their survival.…”

Section: Introductionmentioning

confidence: 99%

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The lampricide 3-trifluoromethyl-4-nitrophenol causes temporary metabolic disturbances in juvenile lake sturgeon (Acipenser fulvescens): implications for sea lamprey control and fish conservation

Ionescu

Hepditch

Wilkie

2021

Conservation Physiology

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The pesticide 3-trifluoromethyl-4-nitrophenol (TFM) is applied to rivers and streams draining into the Laurentian Great Lakes to control populations of invasive sea lamprey (Petromyzon marinus), which are ongoing threats to fisheries during the lamprey’s hematophagous, parasitic juvenile life stage. While TFM targets larval sea lamprey during treatments, threatened populations of juvenile lake sturgeon (Acipenser fulvescens), particularly young-of-the-year (<100 mm in length), may be adversely affected by TFM when their habitats overlap with larval sea lamprey. Exposure to TFM causes marked reductions in tissue glycogen and high energy phosphagens in lamprey and rainbow trout (Oncorhynchus mykiss) by interfering with oxidative ATP production in the mitochondria. To test that environmentally relevant concentrations of TFM would similarly affect juvenile lake sturgeon, we exposed them to the larval sea lamprey minimum lethal concentration (9-h LC99.9), which mimicked concentrations of a typical lampricide application and quantified energy stores and metabolites in the carcass, liver and brain. Exposure to TFM reduced brain ATP, PCr and glycogen by 50–60%, while lactate increased by 45–50% at 6 and 9 h. A rapid and sustained depletion of liver glucose and glycogen of more than 50% was also observed, whereas the respective concentrations of ATP and glycogen were reduced by 60% and 80% after 9 h, along with higher lactate and a slight metabolic acidosis (~0.1 pH unit). We conclude that exposure to environmentally relevant concentrations of TFM causes metabolic disturbances in lake sturgeon that can lead to impaired physiological performance and, in some cases, mortality. Our observations support practices such as delaying TFM treatments to late summer/fall or using alternative TFM application strategies to mitigate non-target effects in waters where lake sturgeon are present. These actions would help to conserve this historically and culturally significant species in the Great Lakes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The lampricide 3-trifluoromethyl-4-nitrophenol causes temporary metabolic disturbances in juvenile lake sturgeon (Acipenser fulvescens): implications for sea lamprey control and fish conservation

Ionescu

Hepditch

Wilkie

2021

Conservation Physiology

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“…Silver Lamprey is the species most commonly observed parasitizing Lake Sturgeon in the SCDRS (Thomas & Haas, 2002). Sea Lamprey, however, can negatively affect Lake Sturgeon populations (Dobiesz et al., 2018; Patrick et al., 2009; Sepulveda et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

Incidence of lamprey marks on Lake Sturgeon ( Acipenser fulvescens Rafinesque, 1817) in the St. Clair – Detroit River System: Implications for Sea Lamprey ( Petromyzon marinus Linnaeus, 1758) effects

et al. 2021

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Laurentian Great Lakes Lake Sturgeon (Acipenser fulvescens) are hosts to lamprey species, including native Silver Lamprey (Ichthyomyzon unicuspis) and invasive Sea Lamprey (Petromyzon marinus). Silver Lamprey coevolved with Lake Sturgeon and cause negligible mortality, but Sea Lamprey can negatively affect Lake Sturgeon populations. Sea Lamprey abundance in Lake Erie has been above targets set by resource managers, with the St. Clair – Detroit River System (SCDRS) suspected as a source of Sea Lamprey production into Lake Erie. This study summarizes lamprey marking on Lake Sturgeon captured during agency assessment surveys in the SCDRS since 1996 and provides insight on the potential for Sea Lamprey to negatively affect Lake Sturgeon in the SCDRS. Lamprey marks (any lamprey species) were noted on 48.2% of Lake Sturgeon (2.5 marks/fish) and 3.3% of Lake Sturgeon assumed to be susceptible to mortality by Sea Lamprey (<760 mm TL; 0.06 marks/fish). Silver Lamprey were the only lamprey species found attached to Lake Sturgeon and there was no difference between oral disc diameters of Silver Lamprey and marks measured on Lake Sturgeon in Lake St. Clair and the lower St. Clair River (p = .45). Based on logistic regression, probability of at least one lamprey mark increased with Lake Sturgeon total length and was highest in Lake St. Clair. The probability of observing at least one lamprey mark on a 760 mm Lake Sturgeon was 8.1% or less for each sampling location in the SCDRS aside from Lake St. Clair (28.1%). Results suggest that parasitism of Lake Sturgeon by Sea Lamprey in the SCDRS is rare, particularly for Lake Sturgeon <760 mm TL. Low incidence of lamprey marks on Lake Sturgeon assumed to be susceptible to mortality from Sea Lamprey parasitism and zero occurrence of Sea Lamprey being observed attached to a Lake Sturgeon suggest Sea Lamprey at their current abundance likely have little effect on the Lake Sturgeon population in the SCDRS. Caution should be taken when using mark size to assign marks to lamprey species as there is substantial overlap among species oral disc diameters, potentially inflating the perceived impact of Sea Lamprey on Lake Sturgeon in areas with native lampreys.

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“…Both lampricides and barriers are also of stakeholder concern regarding non-target effects, raising concerns about the long-term viability of the current program. Lampricide use has been viewed as in conflict with restoration of native Lake Sturgeon (Acipenser fulvescens) populations due to elevated susceptibility of age 0 Sturgeon to TFM until they reach 100 mm in length (Dobiesz et al 2018), and with protection of populations of native lampreys that have been recognized as species of conservation concern. Likewise, growing interest in ''de-fragmentation'' of Great Lakes watersheds to support native fish populations conflicts with the maintenance of barriers to prevent Sea Lamprey spawning (McLaughlin et al 2003(McLaughlin et al , 2013Milt et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Stakeholder attitudes towards the use of recombinant technology to manage the impact of an invasive species: Sea Lamprey in the North American Great Lakes

Thresher¹,

Jones

Drake

2018

Biol Invasions

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Several factors, including: (1) ongoing difficulties of cost-effectively managing invasive species; (2) recent successes in using recombinant genetics to suppress mosquito populations; and, (3) developments in gene-drive technology, have reinvigorated interest in using genetic biotechnology to manage the impacts of invasive species. However, the extent to which there is 'social license' to develop and use these technologies has not been widely canvassed. We surveyed stakeholders involved directly and indirectly in managing Sea Lamprey (Petromyzon marinus) in the upper North American Great Lakes and a key community group of resource users-recreational fishers-to assess their support and concerns about researching, developing, and potentially implementing recombinant methods that an expert group assessed as likely to be effective in managing Sea Lamprey in the Great Lakes. Both groups overwhelmingly supported initiating R&D and, if risks were deemed very low, undertaking steps towards implementation. The key concern expressed by both groups was the risk of impacts to non-target taxa, including valued native populations of Sea Lamprey outside of the Great Lakes. Few respondents expressed opposition based on ethical or moral grounds, which contrasts with previous surveys on the use of recombinant technology in general. The broad support for R&D into recombinant approaches is likely to reflect trust in the nominated implementing agency (the Great Lakes Fishery Commission), its history of extensive consultation prior to undertaking management actions, and the hope that genetic biocontrol could ''solve'' the Sea Lamprey problem rather than simply managing it.

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Evaluation of sea lamprey-associated mortality sources on a generalized lake sturgeon population in the Great Lakes

Cited by 13 publications

References 60 publications

The lampricide 3-trifluoromethyl-4-nitrophenol causes temporary metabolic disturbances in juvenile lake sturgeon (Acipenser fulvescens): implications for sea lamprey control and fish conservation

The lampricide 3-trifluoromethyl-4-nitrophenol causes temporary metabolic disturbances in juvenile lake sturgeon (Acipenser fulvescens): implications for sea lamprey control and fish conservation

Incidence of lamprey marks on Lake Sturgeon ( Acipenser fulvescens Rafinesque, 1817) in the St. Clair – Detroit River System: Implications for Sea Lamprey ( Petromyzon marinus Linnaeus, 1758) effects

Stakeholder attitudes towards the use of recombinant technology to manage the impact of an invasive species: Sea Lamprey in the North American Great Lakes

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