Article
Environmental Sciences
Shawn M. Nowicki, Lori A. Criger, Peter J. Hrodey, W. Paul Sullivan, Fraser B. Neave, Ji X. He, Tom K. Gorenflo
Summary: Beginning in 1960, treatments for sea lamprey control in Lake Huron have been conducted, with ongoing efforts to develop and employ various control strategies. Progress has been made in reducing sea lamprey abundance, but achieving the ultimate control objective remains an ongoing effort.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Article
Microbiology
Prince P. Mathai, Muruleedhara N. Byappanahalli, Nicholas S. Johnson, Michael J. Sadowsky
Summary: The gut bacterial communities associated with sea lamprey differ significantly among its larval, parasitic juvenile, and adult life stages, with a notable shift in bacterial community structure and reduction in alpha diversity from larval to parasitic juvenile stage. Different phyla are enriched at different life stages, indicating a dynamic change in the gut microbiota composition throughout the lamprey's life cycle.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Multidisciplinary Sciences
Anne M. Scott, Nicholas S. Johnson, Michael J. Siefkes, Weiming Li
Summary: Sex pheromones exert maximum attraction when their components are present at optimal ratios, but altering these ratios or adding analogs may disrupt attraction. In sea lamprey, a pheromone analog was found to reduce female attraction and disrupt spawning, providing evidence for balanced olfactory antagonism in vertebrates.
Article
Biodiversity Conservation
Tyler J. Firkus, Konstadia Lika, Noah Dean, Cheryl A. Murphy
Summary: This article introduces the DEB model as a useful approach to describe the consequences of parasitism for host species. The model accurately reflects the changes in ovarian mass and growth observed in lake trout following sea lamprey parasitism, and provides a plausible explanation of the energetic mechanisms behind skipped spawning.
CONSERVATION PHYSIOLOGY
(2023)
Article
Environmental Sciences
Kelly F. Robinson, Scott M. Miehls, Michael J. Siefkes
Summary: Control of invasive sea lamprey in the Great Lakes using a selective pesticide has been ongoing since the late 1950s, with varying success rates due to uncertainties in pre-control adult sea lamprey estimates. Historical data analysis suggests that pre-control adult sea lamprey abundance was greater than current populations, but estimates were sensitive to trapping efficiency. While declines in abundance aligned with increased control efforts in Lake Superior, other lakes saw declines prior to pesticide application, possibly due to prey loss. Previous estimates may have underestimated pre-control adult sea lamprey abundance unless trapping efficiency was higher.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Article
Zoology
Tyler J. Firkus, Frederick W. Goetz, Gregory Fischer, Cheryl A. Murphy
Summary: This study examined the changes in energy allocation in two salmon species with different life history strategies following parasitism. The results showed significant differences in the response to parasitism between the two fish, suggesting that life history strategies can be used to generalize stressor response between populations.
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2022)
Article
Biology
Yu-Wen Chung-Davidson, Ugo Bussy, Skye D. Fissette, Anne M. Scott, Weiming Li
Summary: Bile salt levels in sea lampreys vary with different life stages and sexes, and can be influenced by primer pheromones.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Fisheries
Hayley C. Glassic, David D. Chagaris, Christopher S. Guy, Lusha M. Tronstad, Dominique R. Lujan, Michelle A. Briggs, Lindsey K. Albertson, Travis O. Brenden, Timothy E. Walsworth, Todd M. Koel
Summary: This study investigated the recovery of Yellowstone Cutthroat Trout in Yellowstone Lake and found that predation, drought, and disease have caused a decline in their population. However, the implementation of a Lake Trout suppression program has led to a partial recovery. Nevertheless, incorporating the influence of disease and climate change, the conservation benchmarks for the trout have not been achieved. Therefore, the researchers suggest including additional factors in the conservation benchmarks for a better assessment of management actions and environmental conditions on the trout.
Article
Environmental Sciences
Nicholas S. Johnson, Brian Snow, Tyler Bruning, Aaron Jubar
Summary: A study tested a seasonal and non-physical barrier using pulsed direct electrical current to block adult sea lamprey and monitored the movement and mortality of non-target fish species. The results showed that the electric barrier effectively blocked adult sea lamprey, reduced the abundance of larval sea lamprey upstream, but raised concerns about the effects on the movements and survival of other fish species.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Article
Evolutionary Biology
Ellen M. Weise, Kim T. Scribner, Jean Adams, Olivia Boeberitz, Aaron K. Jubar, Gale Bravener, Nicholas S. Johnson, John D. Robinson
Summary: This study used genotyping and pedigree reconstruction techniques to estimate and assess the sea lamprey population in the Great Lakes region. The results showed that traditional mixture analysis methods had inaccuracies in cohort identification, but combining genotype-based pedigree information with age-at-length assignment greatly improved accuracy. Additionally, the study found that barriers limited the number of spawning adults, but did not completely block access to spawning habitats. Therefore, the abundance of larvae alone is not a good indicator of adult spawning abundance.
EVOLUTIONARY APPLICATIONS
(2022)
Article
Biology
Daniel Sobrido-Camean, Luis Alfonso Yanez-Guerra, Alexandre Deber, Maria Celina Rodicio, Anton Barreiro-Iglesias
Summary: Kisspeptin peptides play important roles in regulating reproduction and puberty onset in mammals. Duplication of the ancestral kisspeptin gene occurred before the separation of jawless and jawed vertebrates, with the expression of kisspeptin 1 in hypothalamic neurons being an ancestral characteristic in vertebrates.
Article
Ecology
Peter Davies, John Robert Britton, Andrew D. Nunn, Jamie R. Dodd, Chris Bainger, Randolph Velterop, Jonathan D. Bolland
Summary: This study investigates the individual variation in the spawning migrations of sea lamprey, focusing on passage time and retreat behavior in fragmented rivers. The results show that the passage times vary across different barriers, potentially related to barrier characteristics and river discharge conditions. Retreat movements are also observed, and their frequency and distance vary among individuals. These behaviors are influenced by environmental conditions and the availability of alternative migration routes.
FRESHWATER BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Marius Dhamelincourt, Jacques Rives, Marie Pons, Aitor Larranaga, Cedric Tentelier, Arturo Elosegi
Summary: The study found that the nests of sea lamprey have an impact on the macroinvertebrate assemblages in rivers. The increased habitat heterogeneity caused by the nests results in a decrease in invertebrate density and number of taxa, but an increase in overall taxa diversity. In addition, the nests also lead to changes in the proportion of different functional traits of the invertebrates.
Article
Environmental Sciences
Matthew J. Symbal, Fraser B. Neave, Aaron K. Jubar, Todd B. Steeves, Shawn M. Nowicki, Robert J. Frank
Summary: Since 2008, the Great Lakes Fishery Commission has increased resources for controlling sea lamprey and executed five targeted treatment strategies. These strategies mainly focus on killing sea lamprey larvae to reduce adult sea lamprey populations. While determining the effect of individual strategies proved challenging, the additional treatment effort in the upper Great Lakes seems to have contributed to overall declines in adult sea lamprey abundance.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Review
Limnology
Jonathan J. Borrelli, Rick A. Relyea
Summary: Lakes are under various human pressures, and modeling community dynamics is essential to understand their response to changing environments. Current models have focused on pelagic organisms and treated lakes as uniform communities, but there is actually heterogeneity within lakes due to environmental conditions, leading to compartmentalization in food web structure. Lakes can be represented as three-dimensional meta-ecosystems, with connected compartments of food webs with varying degrees of mobility. However, current modeling approaches have limitations in representing spatial heterogeneity. The use of allometric trophic networks is recommended to facilitate spatially explicit food web modeling.
LIMNOLOGY AND OCEANOGRAPHY
(2022)