scholarly journals Trade-offs between suppression and eradication of sea lampreys from the Great Lakes

2021 ◽  
Author(s):  
Jean V. Adams ◽  
Oana Birceanu ◽  
W. Lindsay Chadderton ◽  
Michael L. Jones ◽  
Jesse M. Lepak ◽  
...  
Keyword(s):  
Great Lakes ◽  
Trade Offs ◽  
Sea Lampreys

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

Significance of Organic Detritus in the Diet of Larval Lampreys in the Great Lakes Basin

1994 ◽  
Vol 51 (11) ◽  
pp. 2380-2387 ◽  
Author(s):  
Trent M. Sutton ◽  
Stephen H. Bowen
Keyword(s):  
Great Lakes ◽  
Feeding Rate ◽  
Assimilation Efficiency ◽  
Dry Mass ◽  
Great Lakes Basin ◽  
Organic Detritus ◽  
Upper Peninsula ◽  
Sea Lampreys ◽  
Gut Fullness ◽  
Upper Peninsula Of Michigan

Larval sea lamprey (Petromyzon marinus) and northern brook lamprey (Ichthyomyzon fossor) were collected monthly from three streams in the Upper Peninsula of Michigan from May 1992 through May 1993 and larval sea lampreys were collected during summer months from sites throughout the Great Lakes basin. Organic detritus made up most of the diet ash-free-dry-mass (AFDM) throughout the year, averaging 97.79%, with algae (2.12%) and bacteria (0.09%) making up the remainder of the diet AFDM. Assimilation efficiency for AFDM averaged 72% during warmer months and 53% during cooler months (annual mean = 61%). Gut fullness (amount of AFDM in the anterior one-tenth of the intestine) was low (mean = 0.10 mg diet AFDM∙g−1 ammocoete). There were no significant differences in these measures between ammocoetes collected from the Upper Peninsula and those collected throughout the Great Lakes basin. From a laboratory-determined relationship between gut fullness and feeding rate, feeding rate in the field was estimated to be extremely slow, ranging from 4.2 to 5.5 mg diet AFDM∙g−1 ammocoete∙d−1. These observations indicate that larval lampreys efficiently utilize a diet of organic detritus during warmer months when stream temperatures and food quality are more favorable for feeding, digestion, and growth.

Burbot: Ecology, Management, and Culture

2008 ◽  
Keyword(s):  
Population Density ◽  
Great Lakes ◽  
Lake Erie ◽  
Lake Trout ◽  
Habitat Degradation ◽  
Alosa Pseudoharengus ◽  
Fish Stocks ◽  
Pelagic Larvae ◽  
Sea Lampreys ◽  
Long Term Trends

Abstract.—Burbot <em>Lota lota </em>populations collapsed in four of the five Laurentian Great Lakes between 1930 and the early 1960s. Collapses in Lakes Michigan, Huron, and Ontario were associated with sea lamprey <em>Petromyzon marinus </em>predation, whereas the collapse in Lake Erie was likely due to a combination of overexploitation, decreased water quality, and habitat degradation. We examined time series for burbot population density in all five lakes extending as far back as the early 1970s to present time and characterized the long-term trends after the initial collapses. Burbot population density in Lake Superior has remained relatively low and stable since 1978. Recovery of the burbot populations occurred in Lakes Michigan and Huron during the 1980s and in Lake Erie during the 1990s. Control of sea lampreys was a requirement for recovery of burbot populations in these three lakes. Declines in alewife <em>Alosa pseudoharengus </em>abundance appeared to be a second requirement for burbot recovery in Lakes Michigan and Huron. Alewives have been implicated in the decline of certain Great Lakes fish stocks that have pelagic larvae (e.g., burbot) by consuming the pelagic fry and possibly by outcompeting the fry for food. Relatively high populations of adult lake trout <em>Salvelinus namaycush </em>compared to burbot served as a buffer against predation by sea lampreys in Lakes Huron and Erie, which facilitated recovery of the burbot populations there. Although sea lampreys have been controlled in Lake Ontario, alewives are probably still too abundant to permit burbot recovery.

scholarly journals Liquid Chromatographic Method for Determining the Concentration of Bisazir in Water

1997 ◽  
Vol 80 (5) ◽  
pp. 1111-1116 ◽  
Author(s):  
Ronald J Scholefield ◽  
Karen S Slaght ◽  
John L Allen
Keyword(s):  
Great Lakes ◽  
Solid Phase ◽  
Reversed Phase ◽  
Lake Huron ◽  
Extraction Column ◽  
Treated Effluent ◽  
Liquid Chromatographic Method ◽  
Sea Lampreys ◽  
Liquid Chromatographic ◽  
Reversed Phase Lc

Abstract Barrier dams, traps, and lampricides are the techniques currently used by the Great Lakes Fishery Commission to control sea lampreys {Petromyzon marinug) in the Great Lakes. To augment these control techniques, a sterile-male-release research program was initiated at the Lake Huron Biological Station. Male sea lampreys were sterilized by intraperitoneal injection of the chemical sterilant P,P-bis(1-aziridinyl)-Nmethylphosphinothioic amide (bisazir). An analytical method was needed to quantitate the concentration of bisazir in water and to routinely verify that bisazir (&gt;25 μg/L) does not persist in the treated effluent discharged from the sterilization facility to Lake Huron. A rapid, accurate, and sensitive liquid chromatographic (LC) method was developed for determining bisazir in water. Bisazir was dissolved in Lake Huron water; extracted and concentrated on a C18 solid-phase extraction column; eluted with methanol; and quantitated by reversed-phase LC using a Cis column, amobile phase of 70% water and 30% methanol (v/v), and UV detection (205 nm). Bisazir retention time was 7-8 min; total run time was about 20 min. Method detection limit for bisazir dissolved in Lake Huron water was about 15 μg/L. Recovery from Lake Huron water fortified with bisazir at 100 μg/L was 94% (95% confidence interval, 90.2-98.2%).

Recovery of Larval Sea Lampreys from Short-Term Exposure to the Pesticide 3-Trifluoromethyl-4-Nitrophenol: Implications for Sea Lamprey Control in the Great Lakes

2012 ◽  
Vol 141 (6) ◽  
pp. 1697-1710 ◽  
Author(s):  
Alexander M. Clifford ◽  
Matthew Henry ◽  
Roger Bergstedt ◽  
D. Gordon McDonald ◽  
Adam S. Smits ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sea Lamprey ◽  
Short Term ◽  
Short Term Exposure ◽  
Sea Lampreys

Techniques and Methods for Estimating Abundance of Larval and Metamorphosed Sea Lampreys in Great Lakes Tributaries, 1995 to 2001

2003 ◽  
Vol 29 ◽  
pp. 137-151 ◽  
Author(s):  
Jeffrey W. Slade ◽  
Jean V. Adams ◽  
Gavin C. Christie ◽  
Douglas W. Cuddy ◽  
Michael F. Fodale ◽  
...  
Keyword(s):  
Great Lakes ◽  
Sea Lampreys

Olfactory-mediated stream-finding behavior of migratory adult sea lamprey (Petromyzon marinus)

2011 ◽  
Vol 68 (3) ◽  
pp. 523-533 ◽  
Author(s):  
Lance A. Vrieze ◽  
Roger A. Bergstedt ◽  
Peter W. Sorensen
Keyword(s):  
Invasive Species ◽  
Great Lakes ◽  
River Water ◽  
Petromyzon Marinus ◽  
River Mouth ◽  
Sea Lamprey ◽  
Anadromous Fish ◽  
Three Phase ◽  
Sea Lampreys ◽  
Novel Strategy

Stream-finding behavior of adult sea lamprey ( Petromyzon marinus ), an anadromous fish that relies on pheromones to locate spawning streams, was documented in the vicinity of an important spawning river in the Great Lakes. Untreated and anosmic migrating sea lampreys were implanted with acoustic transmitters and then released outside the Ocqueoc River. Lampreys swam only at night and then actively. When outside of the river plume, lampreys pursued relatively straight bearings parallel to the shoreline while making frequent vertical excursions. In contrast, when within the plume, lampreys made large turns and exhibited a weak bias towards the river mouth, which one-third of them entered. The behavior of anosmic lampreys resembled that of untreated lampreys outside of the plume, except they pursued a more northerly compass bearing. To locate streams, sea lampreys appear to employ a three-phase odor-mediated strategy that involves an initial search along shorelines while casting vertically, followed by river-water-induced turning that brings them close to the river’s mouth, which they then enter using rheotaxis. This novel strategy differs from that of salmonids and appears to offer this poor swimmer adaptive flexibility and suggests ways that pheromonal odors might be used to manage this invasive species.

An Assessment of Age Determination Methods for Great Lakes Larval Sea Lampreys

2009 ◽  
Vol 29 (4) ◽  
pp. 914-927 ◽  
Author(s):  
Heather A. Dawson ◽  
Michael L. Jones ◽  
Kim T. Scribner ◽  
Stacy A. Gilmore
Keyword(s):  
Great Lakes ◽  
Age Determination ◽  
Sea Lampreys ◽  
Determination Methods

Understanding low success trapping invasive sea lampreys: an entry-level analysis

2015 ◽  
Vol 72 (12) ◽  
pp. 1876-1885 ◽  
Author(s):  
Adrienne R. McLean ◽  
Jessica Barber ◽  
Gale Bravener ◽  
Andrew M. Rous ◽  
Robert L. McLaughlin
Keyword(s):  
Great Lakes ◽  
Petromyzon Marinus ◽  
Laurentian Great Lakes ◽  
High Discharge ◽  
Entry Level ◽  
Sea Lampreys ◽  
Insufficient Time ◽  
Level Analysis

Invasive sea lampreys (Petromyzon marinus) in the Laurentian Great Lakes are the target of binational control. Trapping of adults could be used for control if trap success was higher. At a hydro-generating station on the St. Marys River, we tested whether the probability of trap entry is low (0.2–0.3) because (i) lampreys spend insufficient time near traps to find and enter the trap, (ii) high discharge at trap sites makes attractant flow from traps difficult to detect or trap openings difficult to reach, and (iii) conspecifics impede trap entry. Discharge at the site was manipulated nightly, and the behaviour of lampreys at trap openings was video-recorded. Odds of a lamprey reaching a trap opening and entering the trap were 3.4 and 1.6 times higher, respectively, with every second spent at a trap. The probability of reaching a trap was not lower on nights when discharge was high or when conspecifics were present at the trap opening. Improved trap entry will require manipulation of stimuli other than discharge that affect the time spent at traps.

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