A5013670851- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Marine and fisheries research
- Fish biology, ecology, and behavior
- Reproductive biology and impacts on aquatic species
- Hydrology and Sediment Transport Processes
- Wildlife Ecology and Conservation
- Ecology and biodiversity studies
- Water Quality and Resources Studies
- Environmental DNA in Biodiversity Studies
- Water-Energy-Food Nexus Studies
- Freshwater macroinvertebrate diversity and ecology
- Marine and environmental studies
- Oceanographic and Atmospheric Processes
- Myxozoan Parasites in Aquatic Species
- Marine Bivalve and Aquaculture Studies
- Aquaculture Nutrition and Growth
- Genetic diversity and population structure
- Avian ecology and behavior
- Marine animal studies overview
- Animal Behavior and Reproduction
- Modular Robots and Swarm Intelligence
- Sperm and Testicular Function
- Marine Biology and Ecology Research
Fisheries and Oceans Canada
2016-2025
University of Massachusetts Amherst
2015
Great Lakes Institute of Management
2002-2003
Watershed
2002
Abstract We synthesized evidence for unintended consequences and trade‐offs associated with the passage of fishes. Provisioning fish passageways at dams dam removals are being carried out increasingly as resource managers seek ways to reduce fragmentation migratory populations restore biodiversity nature‐like ecosystem services in tributaries altered by dams. The benefits provisioning upstream highlighted widely. Possible unwanted coming light, but remain poorly examined underappreciated....
Abstract Anguillid eels are found globally in fresh, transitional and saline waters have played an important role human life for centuries. The population status of several species is now significant concern. threats to populations include direct exploitation at different stages, blockages migratory routes by dams other structures, changes river basin management that impact habitat carrying capacity suitability, pollution, climate change, diseases parasites. While much has been done...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 10:71-82 (2010) - DOI: https://doi.org/10.3354/esr00247 Identifying shark mating behaviour using three-dimensional acceleration loggers Nicholas M. Whitney1,*, Harold L. Pratt Jr.2, Theo C. Pratt2, Jeffrey Carrier3 1Center for Shark Research, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, Florida 34236,...
Abstract Barriers to prevent spawning migrations of sea lampreys Petromyzon marinus remain an important component integrated lamprey management program in the Laurentian Great Lakes. Concerns about effects on nontarget fishes have led construction specially designed vertical‐slot trap‐and‐sort fishways mitigate potential barrier effects. To improve passage at these fishways, we used passive transponder technology assess performance two located low‐head barriers. Fishways Big Carp River...
Barrier removal is a recognized solution for reversing river fragmentation, but restoring connectivity can have consequences both desirable and undesirable species, resulting in conundrum. Selectively passing taxa while restricting the dispersal of (selective connectivity) would solve many aspects Selective technical challenge sorting an assortment things. Multiattribute systems exist other fields, although none yet been devised freely moving organisms within river. We describe approach to...
This publication is a user guide for an archive of morphological data recorded by various authors from North American ciscoes the Coregonus artedi species complex (subfamily Coregoninae). The accessible Great Lakes Fishery Commission’s (GLFC) server, open access, and contains Laurentian Lakes; Lake Nipigon, Ontario; Slave Lake, Northwest Territories. comprises morphometrics meristics (together metrics) 6,700 individual Cisco which 1,400 are accompanied images. In addition, metrics presented...
ABSTRACT Young American eels ( Anguilla rostrata ) undergo a remarkable migration from oceanic spawning grounds to continental growth habitats. Impaired river connectivity can prevent facultatively catadromous completing their upstream migration. The effects of barriers on the dynamics this endangered species remain poorly understood. This study evaluated timing juvenile eel and spatial distribution size/age structure migrating within tidal hydropower‐regulated Wolastoq | Saint John River in...
ABSTRACT The importance of connectivity for freshwater organisms is widely recognised, yet in‐stream barriers associated with population declines and increased risk extinction remain globally ubiquitous. Despite their negative consequences, these can protect aquatic communities by limiting the spread invasive species, leading to conflicting management goals in some regions. Selective fish passage a solution passing native, desirable species while restricting invasives. Approaches that target...
Abstract Worldwide concerns about declining eel stocks have resulted in the increased use of conservation stocking (i.e. translocation early life‐stages from areas high recruitment to experiencing declines) as a recovery tool. North Atlantic eels complicated and incompletely understood life‐history strategies with major differences parameters across species’ broad distributions, these may be important for migrating spawning successfully. Sex ratio, growth rate size age at maturation American...
Abstract Freshwater eels Anguilla spp. are declining worldwide, and a major challenge is understanding why these panmictic species show contrasting patterns of intraspecific phenotypic variation recruitment. We present results on studies the American Eel A. rostrata to understand discriminate effects origin plasticity growth sex determination. considered two separate one length‐at‐age data sets. The first set originated from 34‐month rearing experiment starting glass eel life stage test...
Lake Superior is the least anthropogenically impacted of Laurentian Great Lakes ecosystems, yet dramatic changes to fish community are evident. Previous published works chronicled those and efforts rehabilitate through year 2000. Here, we review 2022, where post-rehabilitation stability was driven by lean lake trout (Salvelinus namaycush namaycush) as most abundant piscivore in nearshore waters, siscowet siscowet) offshore a healthy, intact assemblage native prey species, which created...
The Laurentian Great Lakes (LGL) formed following the retreat of Wisconsin glaciation 15-9 ka and provided a vast volume freshwater habitat for coregonines, which included diverse endemic complex ciscoes. However, anthropogenic impacts in 19th 20th centuries resulted declines losses ciscoes, leaving only Lake Superior with relatively intact that still dominates its prey fish community. In 1920s, W. Koelz described six putative cisco species from Superior: Coregonus artedi, C. hoyi, kiyi,...
Abstract Significant declines in the recruitment of American eels Anguilla rostrata to formerly productive habitats upper St. Lawrence River and Lake Ontario resulted implementation an experimental conservation stocking program. Nearly 3.8 million (glass eel elver stages) were stocked during 2006–2009. Our study objectives (1) assess adequacy sampling procedures for following temporal changes abundance, (2) examine captured evidence spinal trauma, (3) qualitatively evaluate whether would...
We investigated three potential mechanisms—size-dependent overwinter energy loss, size-specific predation, and size-dependent predator-induced metabolic costs—to determine the role of body size predators on survival reserves young-of-the-year walleyes Stizostedion vitreum. Walleyes were reared in outdoor hatchery ponds Westport, Ontario, for periods (1997-1998, 1998-1999, 1999-2000) presence or absence (burbot Lota lota adult walleyes). Other fishes provided as prey items. predicted that (1)...
We removed 40%–70% of nearshore wood habitat from three lakes to test the link between and productive capacity, specifically focusing on provision substrate for periphyton invertebrate production by submerged wood. Our objectives were fourfold: (i) calculate total amount biomass with wood; (ii) explore wood's value as invertebrates periphyton; (iii) determine response within residual epixylic biomass; (iv) assess interactions other factors that may influence productivity. Invertebrate was...
Crucial to the management of invasive species is understanding space use and environmental features affecting use. Improved by sea lamprey (Petromyzon marinus) could help researchers discern why trap success in large rivers lower than needed for effective control. We tested whether manipulating discharge nightly increase at a hydroelectric generating station on St. Marys River. quantified numbers acoustically tagged lampreys migrating up to, their at, station. In 2011 2012, 78% 68%,...
Abstract Background While Pace of Life Syndrome predicts behavioural differences between individuals with differential growth and survival, testing these predictions in nature is challenging due to difficulties measuring individual behaviour the field. However, recent advances acoustic telemetry technology have facilitated measurements at scales not previously possible aquatic ecosystems. Methods Using a Walleye ( Sander vitreus ) population inhabiting Black Bay, Lake Superior, we examine...