scholarly journals Mitigation of lampricide toxicity to juvenile lake sturgeon: the importance of water alkalinity and life stage

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Scott L J Hepditch ◽  
Laura R Tessier ◽  
Jonathan M Wilson ◽  
Oana Birceanu ◽  
Lisa M O’Connor ◽  
...  
Keyword(s):  
Great Lakes ◽  
Life Stage ◽  
Late Summer ◽  
Sea Lamprey ◽  
Lake Sturgeon ◽  
High Alkalinity ◽  
Young Of The Year

Lay Summary Young-of-the-year lake sturgeon living in waters of high alkalinity are susceptible to mortality when exposed to 3-trifluoromethyl-4-nitrophenol (TFM), a pesticide used to control invasive sea lamprey in the Great Lakes. This risk may be reduced, however, by delaying TFM treatments to late-summer/fall, when sturgeon are larger and accumulate TFM more slowly.

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

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
R Adrian Ionescu ◽  
Scott L J Hepditch ◽  
Michael P Wilkie
Keyword(s):  
Great Lakes ◽  
Life Stage ◽  
Late Summer ◽  
Sea Lamprey ◽  
High Energy ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Metabolic Disturbances ◽  
Atp Production ◽  
Rainbow Trout Oncorhynchus Mykiss

Abstract 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.

Management inferences from a demographic analysis of sea lamprey (Petromyzon marinus) in the Laurentian Great Lakes

2008 ◽  
Vol 65 (2) ◽  
pp. 227-244 ◽  
Author(s):  
Luis Antonio Vélez-Espino ◽  
Robert L McLaughlin ◽  
Thomas C Pratt
Keyword(s):  
Great Lakes ◽  
Life Stage ◽  
Petromyzon Marinus ◽  
Management Strategies ◽  
Sea Lamprey ◽  
Management Plan ◽  
Laurentian Great Lakes ◽  
Alternative Methods ◽  
Vital Rates ◽  
Population Growth Rates

We use matrix models incorporating uncertainty in values of life history traits and density-dependent survival to assess pest management strategies implemented by the Great Lakes Fishery Commission to control nonnative sea lamprey (Petromyzon marinus) in the Laurentian Great Lakes. The primary method of sea lamprey control has been treatment of rearing tributaries with chemical lampricides, but release of sterilized males and deployment of migratory barriers and traps are important components of the management plan. Uncertainties in the effectiveness of alternative control remain, however. Our models demonstrated that the management target of reducing lampricide use by 20% while maintaining current levels of control could be achieved if alternative methods are used to suppress current lake-wide fecundity rates by 49%–65%, assuming equal lampricide efficiency on larvae and metamorphosing individuals, or by 42%–55% when lampricide mortality on larvae is assumed to be half of that on metamorphosing individuals. At current levels of lampricide use, reduction to 72%–88% of current fecundity rates is recommended to ensure long-term control of sea lamprey populations in the face of uncertainty in current estimates of population growth rates. New control options targeting additional vital rates, such as survival of the parasitic life stage, could further reduce reliance on lampricides while maintaining effective sea lamprey control.

Predatory-Phase Sea Lampreys (Petromyzon marinus) in the Great Lakes

1980 ◽  
Vol 37 (11) ◽  
pp. 2007-2020 ◽  
Author(s):  
B. G. H. Johnson ◽  
William C. Anderson
Keyword(s):  
Great Lakes ◽  
Lake Trout ◽  
Feeding Activity ◽  
Stomach Contents ◽  
Late Summer ◽  
Sea Lamprey ◽  
Fishing Effort ◽  
Early Spring ◽  
Sea Lampreys ◽  
Early Fall

Incidentally caught predatory-phase sea lampreys were obtained from the commercial fisheries of the Laurentian Great Lakes, together with related catch data, in return for a reward offered to fishermen. Catches of sea lampreys per unit of fishing effort in Lake Superior generally paralleled other indices of sea lamprey abundance. Recently metamorphosed sea lampreys tended to appear early in the season in deepwater fisheries, typically those directed toward cisco (Coregonus spp.), whereas older specimens were taken more often in gear set at shallower depths during summer and fall. The proportion of male sea lampreys in the collections decreased annually between spring and fall, due apparently to a shoreward movement of the males. Large lake trout (Salvelinus namaycush) appeared to be the preferred prey of the sea lamprey. From studies of the stomach contents, sea lamprey feeding activity appeared to reach a peak in late summer or early fall, thereafter declining until the cessation of feeding in early spring. Growth rate reached a maximum in late summer or early fall. Greatest length was attained between January and March, after which a decrease in length was observed. Predatory-phase sea lampreys remained concentrated near the mouths of their parent streams if sufficient numbers of prey were present. Their distribution in the Great Lakes was related to the location of prey.Key words: sea lamprey, predation, Great Lakes fishery

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

2018 ◽  
Vol 44 (2) ◽  
pp. 319-329 ◽  
Author(s):  
Norine E. Dobiesz ◽  
James R. Bence ◽  
Trent Sutton ◽  
Mark Ebener ◽  
Thomas C. Pratt ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sea Lamprey ◽  
Lake Sturgeon

scholarly journals Nitrogenous compounds characterized in the deterrent skin extract of migratory adult sea lamprey from the Great Lakes region

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0217417 ◽  
Author(s):  
Amila A. Dissanayake ◽  
C. Michael Wagner ◽  
Muraleedharan G. Nair
Keyword(s):  
Great Lakes ◽  
Sea Lamprey ◽  
Skin Extract ◽  
Great Lakes Region ◽  
Nitrogenous Compounds

Classification of Sea Lamprey (Petromyzon marinus) Attack Marks on Great Lakes Lake Trout (Salvelinus namaycush)

1980 ◽  
Vol 37 (11) ◽  
pp. 1989-2006 ◽  
Author(s):  
Everett Louis King Jr.
Keyword(s):  
Great Lakes ◽  
Lake Trout ◽  
Petromyzon Marinus ◽  
Attachment Site ◽  
Sea Lamprey ◽  
Salvelinus Namaycush ◽  
Oral Disc ◽  
Field Assessment ◽  
Sea Lampreys

Criteria for the classification of marks inflicted by sea lamprey (Petromyzon marinus) into nine categories were developed from laboratory studies in an attempt to refine the classification system used in field assessment work. These criteria were based on characteristics of the attachment site that could be identified under field conditions by unaided visual means and by touching the attachment site. Healing of these marks was somewhat variable and was influenced by the size of lamprey, duration of attachment, severity of the wound at lamprey detachment, season and water temperature, and by other less obvious factors. Even under laboratory conditions staging of some wounds was difficult, especially at low water temperatures. If these criteria are to be used effectively and with precision in the field, close examination of individual fish may be required. If the feeding and density of specific year-classes of sea lampreys are to be accurately assessed on an annual basis, close attention to the wound size (as it reflects the size of the lamprey's oral disc) and character of wounds on fish will be required as well as consideration of the season of the year in which they are observed.Key words: sea lamprey, attack marks, lake trout, Great Lakes

Optimizing Larval Assessment to Support Sea Lamprey Control in the Great Lakes

2003 ◽  
Vol 29 ◽  
pp. 766-782 ◽  
Author(s):  
Michael J. Hansen ◽  
Jean V. Adams ◽  
Douglas W. Cuddy ◽  
Jessica M. Richards ◽  
Michael F. Fodale ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sea Lamprey

Evaluating harvest-based control of invasive fish with telemetry: performance of sea lamprey traps in the Great Lakes

2016 ◽  
Vol 26 (6) ◽  
pp. 1595-1609 ◽  
Author(s):  
Christopher M. Holbrook ◽  
Roger A. Bergstedt ◽  
Jessica Barber ◽  
Gale A. Bravener ◽  
Michael L. Jones ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sea Lamprey ◽  
Invasive Fish

Seasonal growth and duration of the parasitic life stage of the landlocked sea lamprey (Petromyzon marinus)

1995 ◽  
Vol 52 (6) ◽  
pp. 1257-1264 ◽  
Author(s):  
Roger A. Bergstedt ◽  
William D. Swink
Keyword(s):  
Seasonal Pattern ◽  
Life Stage ◽  
Petromyzon Marinus ◽  
Biomass Accumulation ◽  
Sea Lamprey ◽  
Gonadal Development ◽  
Adult Size ◽  
Sea Lampreys ◽  
Mean Size ◽  
Host Mortality

We used lengths and weights of 2367 live parasitic-phase sea lampreys (Petromyzon marinus) collected from Lake Huron, 1984–1990, to calculate their mean size at half-month intervals. Growth in weight was linear during June through September; increments averaged 11.1 g per half month. Growth increased sharply in October to several times the summer rate. We speculate that the increase in growth in October is explained partly by water temperature and partly by an increase in appetite related to the onset of gonadal development. The greater compression of biomass accumulation in autumn than has been previously demonstrated better explains the autumn pulse of sea lamprey induced host mortality. Based on the seasonal pattern of growth and on recaptures of marked sea lampreys, we conclude that landlocked individuals grow to adult size and mature in one parasitic growth year. Regressions of weight (grams) on total length (millimetres) differed significantly among months, and the season of collection must be considered in predicting weight from length.

Influence of Water Temperature on the Growth Rate of the Landlocked Sea Lamprey (Petromyzon marinus) and the Associated Rate of Host Mortality

1977 ◽  
Vol 34 (9) ◽  
pp. 1373-1378 ◽  
Author(s):  
G. J. Farmer ◽  
F. W. H. Beamish ◽  
P. F. Lett
Keyword(s):  
Growth Rate ◽  
Great Lakes ◽  
Water Temperature ◽  
Growth Rates ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Instantaneous Growth ◽  
Exponential Decline ◽  
Influence Of Water ◽  
Host Mortality

Groups of sea lampreys (Petromyzon marinus) of 10–90 g initial weight were held at temperatures of 1–20 °C for 30 days and allowed to feed ad lib. on white suckers (Catostomus commersoni). Increases in water temperature and in lamprey size caused the rate of host mortality to increase in agreement with observations that mortality in the Great Lakes is seasonal. Instantaneous growth rates were maximal at 20 °C for lampreys of 10–30 g, the optimal temperature for growth shifting to 15 °C for larger lampreys of 30–90 g. Growth rates were intermediate at 10 °C and lowest at 4 °C for lampreys of all size. Accordingly, host mortality increased with temperature over the 4–20 °C range. At all experimental temperatures, increases in lamprey weight were accompanied by an exponential decline in instantaneous growth rates, a phenomenon also observed for teleosts. Laboratory growth rates at temperatures of 5–15 °C were comparable to rates observed for lampreys in Lake Huron between April and November and agree with the observation that lampreys feed in deeper waters between April and June before moving to warmer, shallower waters during the summer when growth rate increases. Key words: sea lamprey, white sucker, host, temperature, growth, Great Lakes, mortality

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