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Comparative Study on Electric Fish Handling Gloves and Immersion Anesthesia for the Surgical Implantation of Transmitters in Brook Trout N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2021-01-07 Benjamin Lamglait; Stéphane Lair
Although the use of electric fish handling gloves (EFHGs) has been advocated as a no‐residue alternative to chemical immobilization for field studies, the impact of their use on fish welfare remains uncertain for surgical procedures. The effects of EFHGs (10–16 mV), with and without local infiltration of lidocaine (6 mg/kg), on stress and muscle integrity after the surgical implantation of an intracoelomic
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Evaluation of Habitat Use by a Catch‐and‐Release Regulated Flathead Catfish Population in Branched Oak Reservoir, Nebraska, USA N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-29 Aaron J. Blank; Tony J. Barada; Jordan D. Katt; Jeffrey J. Jackson
A series of rock jetty and A‐Jack structures was built in 1998 at Branched Oak Reservoir, Nebraska, in an attempt to reduce shoreline erosion and cove degradation. In conjunction with the habitat enhancement project, Flathead Catfish Pylodictis olivaris were stocked to help control the abundant White Perch Morone americana population. Previous research found that Flathead Catfish utilized the habitats
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A Comparison of Two Methods for Sampling Bluegill and Redear Sunfish in Small Impoundments N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-29 Michael J. Porta; Richard A. Snow; Daniel E. Shoup
Bluegill Lepomis macrochirus and Redear Sunfish L. microlophus are highly regarded recreational species throughout North America. Management of these species relies on sampling methods that accurately and efficiently describe population characteristics of the target population. Largemouth Bass Micropterus salmoides and crappies Pomoxis spp. are commonly sampled with spring electrofishing and fall fyke
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Passage and Survival of Juvenile Salmonid Smolts through Columbia and Snake River Dams, 2010–2018 N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-28 John R. Skalski; Steven L. Whitlock; Richard L. Townsend; Ryan Harnish
Minimizing the mortality and migration time of juvenile salmon (smolts) passing dams is a longstanding objective in the pursuit of salmon recovery in the Columbia River Basin. We compiled and analyzed 40 juvenile salmonid acoustic‐tag studies that were performed at seven of the eight hydroelectric projects in the Federal Columbia River Power System between 2010–2018. We found the utilization of non‐turbine
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Do carbonated beverages reduce bleeding from gill injuries in angled Northern Pike? N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-28 Alexandria T. Trahan; Auston D. Chhor; Michael J. Lawrence; Jacob W. Brownscombe; Daniel M. Glassman; Connor H. Reid; Alice E.I. Abrams; Andy J. Danylchuk; Steven J. Cooke
The premise of catch‐and‐release recreational angling is that post‐release survival is high. Therefore, it is common for anglers, management agencies, and conservation organizations to share information on handling practices and other strategies that are believed to improve the welfare and survival of fish that are released. A recent surge in popularity has sensationalized the use of carbonated beverages
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Bigheaded Carp Spatial Reproductive Dynamics in Illinois and Wabash River Tributaries N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-28 Samuel J Schaick; Cassi J Moody‐Carpenter; Eden L Effert‐Fanta; Kellie N Hanser; Daniel R Roth; Robert E Colombo
Fisheries managers are devoting considerable effort, time, and funding towards limiting the spread of invasive Bighead and Silver (bigheaded) Carp. A better understanding of factors that influence spatial patterns of bigheaded carp reproduction can help fisheries managers prevent their spread. To examine factors that influence spatial patterns of reproduction, we sampled ichthyoplankton using drift
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Effects of Density Reduction on Age‐Specific Growth of Stream‐Dwelling Brown Trout N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-10 Travis R. Rehm; Steve R. Chipps; Jacob L. Davis
Density‐dependent growth has been well documented among stream‐dwelling Brown Trout Salmo trutta populations. In Spearfish Creek, South Dakota, biomass of adult Brown Trout (>200 mm) is about three times greater than that reported for similar Black Hills streams, whereas the mean length of adult fish is about 30% less. Here, we evaluate density reduction as a management tool for improving the growth
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Estimating Recreational Fishing Effort Using Autonomous Cameras at Boat Ramps versus Creel Surveys N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-10 Andrew C. Dutterer; Jason R. Dotson; Brandon C. Thompson; Christopher J. Paxton; William F. Pouder
Measuring fishing effort is a common practice in fisheries management. Traditional access‐point or roving creel surveys rely on in‐person interaction between management agency personnel and anglers, the cost of which can restrict where and when the surveys can be performed. Increasing the efficiency of the techniques that are used to estimate recreational fishing effort would benefit management agencies
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River Network and Reach‐Scale Controls on Habitat for Lamprey Larvae in the Umpqua River Basin, Oregon N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-22 Krista L. Jones; Jason B. Dunham; Jim E. O’Connor; Mackenzie K. Keith; Joseph F. Mangano; Kelly Coates; Travis Mackie
This study developed a spatially explicit framework to support the conservation of Western Brook Lamprey Lampetra richardsoni and Pacific Lamprey Entosphenus tridentatus in the Umpqua River basin, Oregon. This framework identified locations within the river network likely to support “potential burrowing habitat” for lamprey larvae based on geomorphic conditions and evaluated the overlap of potential
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Size at Maturity, Shell Conditions, and Morphometric Relationships of Male and Female Jonah Crabs in the Middle Atlantic Bight N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-21 Noelle A. Olsen; Bradley G. Stevens
The Jonah crab Cancer borealis is a data‐poor species with an unknown stock status. They were historically caught as bycatch in American lobster Homarus americanus traps. The decline of the southern New England lobster stock since 1990 helped stimulate a targeted fishery and a sixfold increase in both the landings and ex‐vessel value of Jonah crab. Current knowledge on Jonah crab growth and reproduction
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Stranded Kokanee Salvaged from Turbine Intake Infrastructure Are at Low Risk for Reentrainment: A Telemetry Study in a Hydropower Facility Forebay N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-17 Dirk A. Algera; Taylor Ward; Randy Zemlak; James Crossman; Philip Harrison; Alf Leake; Michael Power; Steven J. Cooke
Entrainment at hydropower facilities, where fish (volitionally and nonvolitionally) enter hydropower infrastructure such as intake towers, can lead to fish becoming stranded for considerable periods of time rather than being flushed to downstream areas. To reduce fish injury and/or mortality from entrainment stranding events, hydropower operators will salvage stranded fish and release them back into
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Flow‐conditioning hatchery‐reared Razorback Sucker Xyrauchen texanus increases apparent survival in the wild N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-22 Nathan R. Franssen; Scott L. Durst; Eliza I. Gilbert; William K. Knight; Manuel Ulibarri
Hatchery augmentation of dwindling wild populations has become a common strategy to avoid extinction of endangered fishes. While benign hatchery conditions can lead to low persistence of stocked individuals, experiments have demonstrated flow‐conditioning Razorback Sucker Xyrauchen texanus can increase swimming performance and reduce downstream movements from desired locations after stocking in the
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Evaluating the Performance of Methods Used to Estimate Growth Parameters from Subsampled Age Data N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-22 Sean C. Lusk; Christopher R. Middaugh; Derek H. Ogle
Due to time and resource limitations, growth of many fish species is evaluated with age and length data in a length stratified subsample of a sample from a population. Some fisheries professionals draw inferences about growth using age and length data from only those fish actually aged (aged‐only method). Alternatively, growth may be evaluated by employing a method of incorporating the length stratified
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Variation in black bass angler characteristics by stream size and accessibility in Oklahoma’s Ozark Highland streams N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-21 Binod Chapagain; James M. Long; Andrew T. Taylor; Omkar Joshi
Fishing in streams and rivers is a popular outdoor recreation activity in eastern Oklahoma where a majority of anglers target black bass (Micropterus) species. Since the early 1990s, when the last assessment of black bass fishing in the region was conducted, broad‐scale factors such as harvesting behavior, state fishery regulations, and bass population dynamics have changed. In 2018, we conducted creel
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Survival and movement patterns of Rainbow Trout stocked in a groundwater‐influenced warmwater stream N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-20 Skylar L. Wolf; Shannon K. Brewer
Stocking Rainbow Trout Oncorhynchus mykiss to create additional angling opportunities is common; however, these fishing opportunities necessitate evaluation in groundwater‐influenced, warmwater streams where the spatial and temporal implications of stocking are unclear. Our objectives were to determine Rainbow Trout dispersal from a stocking location on Spavinaw Creek, Oklahoma and quantify apparent
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Development of genetic baseline information to support the conservation and management of wild Brook Trout in North Carolina N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-20 D.C. Kazyak; B.A. Lubinski; J.M. Rash; T.C. Johnson; T.L. King
Following centuries of declines, there is growing interest in conserving extant wild populations and reintroducing Brook Trout (Salvelinus fontinalis) populations of native ancestry. A population genetic baseline can enhance conservation outcomes and promote restoration success. Consequently, it is important to document existing patterns of genetic variation across the landscape and translate these
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Comparison of Two Otolith Processing Methods for Estimating Age of Three Catfish Species N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-12-19 Peter C. Sakaris; Timothy F. Bonvechio
When performing studies that require fish age estimation, biologists must achieve a high level of accuracy and precision, as age, growth, and survival data are often used in models that inform management decisions. Otolith processing techniques vary, and no studies have assessed which methodology is more precise and cost effective. Our goal was to assess the precision, effort, and resources needed
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Supplemental Feeding as a Tool in the Development of a Quality Wild Trout Fishery N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Stephen J. Owens
Southwest Virginia offers a plethora of trout fishing opportunities for wild trout in headwater and large valley floor streams. However, low productivity in most area streams, including the South Fork Holston River, limits growth leading to populations where individuals seldom exceed 25 cm. The Buller Fish Hatchery located in Smyth County, Virginia offers anglers a unique 1.6‐km special regulation
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Are Muskellunge Affecting Fish Communities in Waters Where They Have Been Introduced? A Re‐examination of Minnesota’s Stocked Muskellunge Waters. N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Michael L. Knapp; Steven W. Mero; David F. Staples
Muskellunge Esox masquinongy are large piscivores stocked into numerous lakes in North America, but the potential effects of these stockings remains poorly understood. To investigate potential fish community changes associated with Muskellunge stocking, we contrasted catch per unit effort (CPUE) for seven fish species commonly found in Minnesota, along with mean weight for two predator species, before
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Use of gizzard diameter to estimate weight and length of partly‐digested Gizzard Shad in piscivore diets N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Daniel E. Shoup; Jeff B. Tibbits; Clayton P. Porter; Richard A. Snow; Michael J. Porta
In diet studies, stomach contents from predatory fish may be difficult to identify due to digestion. Gizzard Shad Dorosoma cepedianum is an important prey species for sportfish, and determining the size of ingested shad can assist with evaluating competitive interactions, bioenergetic patterns, and niche partitioning and can add precision to predictive models. The gizzard organ of clupeids appears
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Evaluation of Management Strategies for an Incidental Catch‐and‐Release Steelhead Fishery N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Joshua L. McCormick; Marika E. Dobos; Brett J. Bowersox; Timothy Copeland
Managing fisheries for species of conservation concern, such as steelhead Oncorhynchus mykiss fisheries in Idaho where wild steelhead are incidentally caught and released, requires a tradeoff between providing opportunity for anglers to fish for hatchery‐origin steelhead and managing conservation risk for wild steelhead. Understanding population‐level effects of catch‐and‐release fishing is critical
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Movements and macro‐habitat use of Alligator Gar in relation to a low head lock and dam system N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Steve Lochmann; Eric L. Brinkman; Dylan A. Hann
Loss of habitat, targeted removals, and overharvest have contributed to the decline of Alligator Gar Atractosteus spatula. There is agreement among commercial fishers, some recreational anglers, conservationists, and natural resource managers that this species warrants conservation. Appropriate management actions require research to further understand the life history and ecology of Alligator Gar populations
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Movement and Space Use of Grass Carp in the Sandusky River, Ohio: Implications for Lake Erie Eradication Efforts N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Cleyo Harris; Travis O. Brenden; Christopher S. Vandergoot; Matthew D. Faust; Seth J. Herbst; John T. Buszkiewicz; Lucas R. Nathan; Jason L. Fischer; Charles C. Krueger
In the Laurentian Great Lakes of North America, a major issue being confronted by fishery managers is limiting the spread and damaging effects of aquatic invasive species and preventing additional invasions from occurring. The Great Lakes are among the planet’s most invaded aquatic ecosystems (Ricciardi 2006) and are at risk for additional invasions due to multiple factors (e.g., importance to global
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Assessment of Two Techniques for Remediation of Lacustrine Rocky Reef Spawning Habitat N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-30 Alexander J. Gatch; Scott T. Koenigbauer; Edward F. Roseman; Tomas O. Höök
Rocky reef habitats in lacustrine systems constitute important areas for lithophilic spawning fishes. Interstitial spaces created by the structure of rocky reefs form micro‐environments where incubating embryos and juvenile fishes are potentially protected from predators and physical displacement. However, if interstitial spaces are filled or blocked by sediment or biofouling, the reef structure may
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Use of acoustic telemetry to identify spawning river and spawning migration patterns of American Shad in the Albemarle Sound, North Carolina N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-29 Kevin Mack; Holly White; Fred C. Rohde
American Shad Alosa sapidissima is an economically, culturally, and ecologically important anadromous species, which undertakes a significant spawning migration, swimming from the ocean into areas far upstream in coastal rivers to reproduce. The species has a large range in the western Atlantic, occurring from Nova Scotia to Florida. However, because American Shad generally return to natal rivers to
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Do electrofishing activities impact stream biofilm standing stocks? An assessment from two headwater streams in western Oregon N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-20 Emily D. Heaston; Catalina Segura; Dana R. Warren
Humans impact ecosystems in many ways and scientific field studies are no exception. If data collection disrupts environments or biota too much, it can lead to inaccurate conclusions in the study of interest or in subsequent studies. We evaluated whether stream electrofishing surveys could measurably impact benthic biofilms in two forested headwaters in western Oregon, USA. While impacts of electrofishing
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Comparison of Active and Passive Larval Sampling Gears in Monitoring Reproduction of Invasive Bigheaded Carps in Large‐River Tributaries N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-20 Daniel R. Roth; Jordan J. Pesik; Eden L. Effert‐Fanta; David H. Wahl; Robert E. Colombo
Silver (Hypophthalmichthys molitrix) and Bighead Carp (H. nobilis), collectively bigheaded carps (BHC), are invasive fishes in the Mississippi River and surrounding basins. Increasing evidence suggests harmful impacts of BHC on native fisheries (e.g. competition). Monitoring abundance of BHC is difficult with traditional fisheries gears, and few studies have evaluated early life stage sampling. Identifying
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Tag type and location‐dependent retention impart varied levels of bias on mark‐recapture parameter estimates N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-20 Douglas L. Zentner; Jonathan J. Spurgeon; Steve E. Lochmann; Christy L. Graham
Population parameter estimates from mark‐recapture studies are dependent on individuals retaining marks or tags. As such, tag retention estimates are needed for different tag types and anatomical tagging locations. Few studies have empirically quantified the bias from tag retention on fish population parameters derived from mark‐recapture studies. We examined differences in retention between T‐bar
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Invasive Blue Catfish in the Chesapeake Bay region: a case study of competing management objectives N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-17 Mary C. Fabrizio; Vaskar Nepal; Troy D. Tuckey
Freshwater fishes have been introduced outside their native range to establish recreational fisheries, but management conflicts arise when such introductions also result in potential harmful effects on native species. In this case study, we focus on Blue Catfish Ictalurus furcatus which were introduced in the Chesapeake Bay region and are now considered invasive. In many tidal tributaries, Blue Catfish
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Population dynamics and temporal trends of Bull Trout in the East Fork Salmon River, Idaho N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-12 Curtis J. Roth; Eric J. Stark; Lucas D. Koenig; Brian S. Ayers; Kevin A. Meyer
Because of their long‐term listing under the Endangered Species Act, much interest has been placed on estimating population vital rates for Bull Trout Salvelinus confluentus, but the biotic and abiotic factors that influence the interannual variability in those vital rates have rarely been evaluated. We used mark‐recapture data to estimate fish growth, survival, and trends in abundance for fluvial
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Non‐lethal fin sampling of North American freshwater fishes for food‐web studies using stable isotopes N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-11 Bryan M. Maitland; Frank J. Rahel
Food web investigations using stable isotope analyses inform management strategies by quantitatively describing interactions among species. Fin tissue is a nonlethal alternative to white muscle tissue for obtaining stable isotope ratios of fish. However, the relationship between fin and muscle values must be evaluated before fin tissue can be substituted for muscle tissue. We examined the relationships
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Identifying Potential Anglers and Customer Segments of Texas Catfish Anglers to Guide Management Actions N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-11 J. Warren Schlechte; John B. Taylor; David L. Buckmeier; Clifford P. Hutt; Kevin M. Hunt
In this paper, we demonstrate how one can combine angler survey data with ESRI® TapestryTM data to assist in developing a statewide catfish R3 (Recruitment, Retention, and Reactivation) and management plan. In 2010, Mississippi State University surveyed 1,078 Texas freshwater catfish anglers to examine their catch‐related attitudes and trip preferences using a stated choice experiment. The study showed
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Atlantic Salmon Salmo salar upstream migration delay in a large hydropower reservoir N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-11 Amanda B. Babin; Stephan Peake; Tommi Linnansaari; R. Allen Curry; Mouhamed Ndong; Katy Haralampides; Ross Jones
Atlantic Salmon Salmo salar spawning success is challenged when migratory routes to natal streams are obstructed by hydropower generation stations and reservoirs which lack directional cues, potentially causing migratory delay. This study used 74 acoustic tagged adult Atlantic Salmon during their spawning migrations to quantify migratory success, rates, and delay through the Mactaquac reservoir in
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Application of Genetic Stock Identification and Parentage‐Based Tagging in a Mixed‐Stock Recreational Chinook Salmon Fishery N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-11 Alexander J. Jensen; Carl B. Schreck; Jon E. Hess; Sandra Bohn; Kathleen G. O’Malley; James T. Peterson
Genetic methods can guide and improve management of recreational mixed‐stock fisheries by informing stock‐specific estimates of harvest. We applied genetic stock identification and parentage‐based tagging to a recreational Chinook Salmon Oncorhynchus tshawytscha fishery in the Columbia River to illustrate the value of genetic analysis in management. We sampled landed catch in 2017 and 2018, assigned
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Perceived constraints and negotiations to trout fishing in georgia based on angler specialization level N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-11-10 Hailey J. TenHarmsel; B. Bynum Boley; Brian J. Irwin; Cecil A. Jennings
Anglers face constraints that influence participation and dropout rates. Some recreational anglers may be able to negotiate constraints by altering the timing or frequency of participation, acquiring new skills, or modifying non‐recreational aspects such as family or work responsibilities. We consider data collected via a mail survey from Georgia‐resident trout license holders to identify both perceived
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Evaluating remote site incubators in Michigan streams: implications for Arctic Grayling reintroduction N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-24 Alan J. Mock; Carl R. Ruetz; James N. McNair; Dan Mays; Archie Martell
The successful use of remote site incubators (RSIs) to rear Arctic Grayling Thymallus arcticus eggs along Montana streams has sparked interest to reestablish the species in Michigan. As a preparatory step, we assessed the efficacy of RSIs by deploying them along three Michigan streams during two years using surrogate eggs from Rainbow Trout Oncorhynchus mykiss. Our objectives were to: (1) compare hatching
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Juvenile Chinook Salmon weight prediction using image‐based morphometrics N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-24 Eric J. Holmes; Carson A. Jeffres
We developed an empirical weight prediction model for juvenile Chinook Salmon, Oncorhynchus tshawytscha, ranging from 33‐113 mm and 0.35‐14.86 g using morphometrics analysis on images collected on live fish in the field. This method relies on consumer‐grade hardware and free software and addresses an issue of a lack of valuable weight and condition data for life‐history and survival modeling. A blind
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A new estimator to correct for bias from tag rate expansion on natural‐origin fish attributes in mixed‐stock analysis using parentage‐based tagging N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-23 Thomas A. Delomas; Jon E. Hess
In fisheries where hatchery and natural‐origin conspecifics occur as mixed stocks, it is often important to estimate both the natural‐origin proportion of the mixture and the composition of attributes within the natural‐origin portion (e.g., genetic stock, sex, and age‐class). These estimates are facilitated by parental‐based tagging, which allows large numbers of hatchery fish to be efficiently tagged
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Characterizing Fish‐Habitat Associations through Paired Fisheries‐Independent and In‐Situ Habitat Assessments N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-21 Emma Clarkson; Jennifer Beseres Pollack
Estuarine habitat has a significant impact on the growth, recruitment, and survival of fish and invertebrate species, and understanding habitat dynamics can improve fisheries management. However, the cost and effort associated with habitat monitoring can be limiting, and many large‐scale fisheries‐independent monitoring programs do not capture habitat and biological data concurrently. Consequently
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Large‐Scale Flow Management Action Drives Estuarine Ecological Response N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-22 Michael P. Beakes; Cory Graham; J. Louise Conrad; James R. White; Michael Koohafkan; John Durand; Ted Sommer
Resource managers rely on large‐scale flow and habitat enhancement actions to support sensitive species in the San Francisco Bay–Delta. The effects of these actions on target species and ecosystems are largely unknown. In 2018, we implemented an ecosystem‐scale experiment to reduce salinity and improve access to high‐quality habitat in Suisun Marsh, California, for Endangered Species Act‐listed Delta
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Genetic evidence of introduced Coosa Bass (Micropterus coosae) and Alabama Bass (M. henshalli) and hybridization with native Micropterus spp. in Town Creek, Alabama, USA N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-19 Matthew R Lewis; Phil Ekema; Mike Holley; Eric J Peatman
The black basses (Micropterus spp.) are some of the most important game fishes in the United States. Translocation by both anglers and state agencies for increased angling opportunity has led to widespread hybridization between native and non‐native species. The use of species‐diagnostic single‐nucleotide polymorphism (SNP) markers for the black basses have allowed for rapid assessment of species identification
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Understanding Life History Diversity of a Wild Steelhead Population and Managing for Resiliency N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-25 Marika E. Dobos; Brett J. Bowersox; Timothy Copeland; Eric J. Stark
Diversity in steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) is often characterized by varying time spent in freshwater and saltwater environments. However, ontogenetic shifts are not often highlighted as an important diversity characteristic in salmonids. Larger water bodies can play a key role in population stability by buffering limited resources in smaller tributary systems. Based on freshwater
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Otolith Microchemistry of Common Carp Reflects Capture Location and Differentiates Nurseries in an Interconnected Lake System of the North American Midwest N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-08-14 Reid G. Swanson; Joel E. Gagnon; Loren M. Miller; Justine D. Dauphinais; Peter W. Sorensen
The Common Carp Cyprinus carpio is an invasive fish whose populations have grown to ecologically damaging levels in the North American Midwest. It has been shown that some shallow nursery habitats contribute disproportionally to population growth of Common Carp in interconnected Midwestern lake systems. The ability of managers to discriminate which shallow basins are producing Common Carp across these
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Movement Dynamics of Nonnative Burbot in the Upper Green River System and Implications for Management N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-09 Tucker A. Brauer; Michael C. Quist; Darren T. Rhea; Troy W. Laughlin; Erik Waring
Burbot Lota lota were illegally introduced to the Green River, Wyoming, in the mid‐1990s and pose a threat to recreational fisheries and native fish conservation. Although much is known about Burbot population dynamics, little is known about their movement patterns. Our objectives were to describe the movement dynamics of Burbot in the upper Green River system to provide information on the ecology
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Estimating the Effects of Environmental Variables and Gear Type on Panfish Catch and Bycatch in Reservoirs N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-02 Michael J. Porta; David R. Stewart; Richard A. Snow
Panfish populations create some of the most popular and intensively managed recreational fisheries in North America. However, sampling biases may prevent fisheries managers from making informed decisions. Typically, panfish are collected using fyke nets; however, hoop nets also may be effective for capturing these species. Information regarding the most efficient and least biased approach for sampling
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Species Distribution Models for a Native Imperiled Minnow and a Nonnative Sport Fish in a Western Ohio River N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-06 Kenneth J. Oswald; Sophia Beery; Kalyn Rossiter; Yong Wang; Marc R. Kibbey
Sport fisheries are frequent drivers of nonnative fish introductions throughout the inland waters of North America. These fisheries often value aggressive, large‐bodied predators, and although they satiate angling demand they are also potentially problematic in systems that support imperiled species. The Tonguetied Minnow Exoglossum laurae is a rare species that maintains a disjunct distribution across
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Modified Commercial Fish Trap to Help Eliminate Salmonid Bycatch Mortality N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-30 Adrian M. Tuohy; John R. Skalski; Aaron T. Jorgenson
The utility of commercial salmonid Oncorhynchus spp. traps in the U.S. Pacific Northwest was recently revisited for the first time in decades to enable selective harvesting of hatchery‐origin salmonids while reducing mortality of Endangered Species Act (ESA)‐listed salmonids. Modifications to historical gear designs resulted in dramatic improvements in salmonid bycatch survival rates relative to conventional
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Rapid Fin Regeneration of Age‐0 Northern Pike and Implications of Fin Clips as a Marking Protocol N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-10 John Paul Leblanc; Anna Conklyn; John M. Farrell
To better understand the reliability of fin clipping as an external mark for early‐summer (<100 mm TL) age‐0 Northern Pike Esox lucius, we experimentally evaluated fin regeneration following complete excision of a pelvic fin over 98 d. The Northern Pike were also marked with a unique visible implant elastomer tag to allow for repeated measures of individuals. Survival, growth, and fin regeneration
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Using Genetic Data to Estimate Capture Rate of Wisconsin and Leech Lake Strains of Muskellunge Stocked in Four Wisconsin Lakes N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-08-09 Wesley A. Larson; Thompson Hill; David Rowe; Daniel Oele; Joseph Gerbyshak; Jennifer Bergman
Many inland fisheries are supported by stocking hatchery‐produced fish, and fisheries managers often face difficult decisions regarding strain selection. Stocking evaluations that are designed to quantify differences in strain performance provide valuable data for designing stocking programs. Here, we used genetic tools to investigate the capture rate of two strains of Muskellunge that were stocked
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Estimating Migratory Behavior and Age for Anadromous Coastal Cutthroat Trout in South Puget Sound: Evaluation of Approaches Based on Fish Scales versus Otoliths N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-08-09 Andrew M. Claiborne; James P. Losee; Jessica A. Miller
Important variability exists in life history attributes among localized populations of Coastal Cutthroat Trout Oncorhynchus clarkii clarkii in relation to geographic and environmental factors. Describing the life history of locally adapted populations is critical to successful fishery management and conservation. The number of annuli and distance between circuli in scales (i.e., scale analysis) are
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Migration and Residency of Sandbar, Atlantic Sharpnose, Bull, and Nurse Sharks in the Northern Gulf of Mexico N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-08-09 Ashley N. Altobelli; Stephen T. Szedlmayer
Acoustic telemetry was used to monitor the movements and residency of Sandbar Sharks Carcharhinus plumbeus, Atlantic Sharpnose Sharks Rhizoprionodon terraenovae, Bull Sharks Carcharhinus leucas, and Nurse Sharks Ginglymostoma cirratum around artificial reefs in the northern Gulf of Mexico. Transmitter‐tagged sharks were monitored from November 2012 to July 2019. Residency comparisons were based on
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Growth of Known‐Age Muskellunge Stocked into Northwestern Wisconsin Lakes N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-08-09 John W. Hermus; Jeremiah A. Gorne; Stephanie L. Shaw; Greg G. Sass
Growth information from known‐age Muskellunge Esox masquinongy is relatively rare in the published literature. We tagged all extended‐growth Muskellunge fingerlings stocked into 10 northwestern Wisconsin lakes during 2009–2019 with PIT tags and later recaptured these fish to establish known age and growth. Our objective was to use known age, and length upon recapture of each stocked Muskellunge, to
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The influence of aggregate socio‐demographic characteristics on fishing license sales in Cook County, IL N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-03 Xiaohan Zhang; Adam C. Landon; Craig A. Miller
Anglers have been one of the major supporters of aquatic conservation activities in the USA through the Dingle‐Johnson Act and other programs. Declining rates of participation in fishing have spurred significant efforts to Recruit, Retain, and Reengage anglers: also known as “R3”. To make R3 strategies more effective, it is important to explore the broader socio‐demographic patterns that underpin angling
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Limestone Remediation of an Acidic Stream Creates a Microchemical Batch Mark for Brook Trout within an Appalachian Watershed N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-04 Brock M. Huntsman; Hae Kim; Quinton Phelps; J. Todd Petty
The addition of limestone sand directly to streams is an effective method for treating chemical and biological issues associated with acid precipitation, a common concern in many Appalachian watersheds. The unique water chemistry created by limestone remediation potentially creates a “mark” in fish hard parts (e.g., otoliths and fin rays) that can be used to identify fish from remediated habitats,
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Simulated Use of YY Male Stocking and Suppression for Eradicating Common Carp Populations N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-10-04 Joshua L. McCormick; Daniel J. Schill; Kevin A. Meyer
The introduction and subsequent spread of Common Carp Cyprinus carpio throughout the world represent one of the most destructive and pervasive forces impacting aquatic ecosystems. Herein we use computer simulations to predict if stocking YY male carp in conjunction with manual netting or piscicide use could eradicate invasive Common Carp populations. Two forms of YY males were evaluated, including
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Using bioenergetics to estimate consumption of stocked age‐0 Walleye Sander vitreus by a suite of piscivores N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-28 Emily Elise Grausgruber; Michael John Weber
Age‐0 Walleye Sander vitreus are stocked throughout North America to maintain and supplement populations. Predation has been implicated as a factor limiting survival of stocked age‐0 Walleye; however, timing, duration, and extent of post‐stocking predation remains uncertain. Our objectives were to estimate the abundance of predators in areas adjacent to stocking locations, estimate temporal variation
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Survival of Advanced‐Fingerlings of Florida Largemouth Bass Stocked in Small Florida Lakes N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-28 Brandon C. Thompson; Wesley F. Porak; William F. Pouder; Edward V. Camp
Numerous stocking evaluations of pellet‐reared advanced‐fingerling (80–120 mm TL) Largemouth Bass Micropterus salmoides have assessed the contribution of stocked fish to the wild population, but few studies have quantified longer‐term (1–2 years) survival. Hatchery researchers have developed spawning Florida Largemouth Bass Micropterus salmoides floridanus (hereafter, "Florida Bass") out of season
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Stock Assessment of the Lemon Shark off the Southeast United States N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-23 Alexander C. Hansell; Tobey H. Curtis; John Carlson; Enric Cortés; Gavin Fay; Steven X. Cadrin
The Lemon Shark Negaprion brevirostris is a large coastal shark that commonly occurs in the shallow nearshore waters of the tropical western Atlantic Ocean. There are conservation concerns for this species due to fisheries exploitation, low productivity, anthropogenic disturbance at nursery sites, and the depleted status of other large coastal sharks, but no quantitative assessment of Lemon Shark stock
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Common Carp Are Initially Repelled by a Broadband Outboard Motor Sound in a Lock Chamber but Habituate Rapidly N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-10 Clark E. Dennis; Peter W. Sorensen
Projecting sound into navigational locks has been suggested as a promising way to block the upstream movement of invasive species of carp (family Cyprinidae). This possibility is promising because carp have a good sense of hearing compared to non‐ostariophysian fishes. Although the broadband sound of an outboard motor has been shown to repel several species of carp in laboratory arenas, its efficacy
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Density‐Dependent Changes in Grass Carp Growth and Mortality in Long‐Term Aquatic Plant Management N. Am. J. Fish. Manag. (IF 1.49) Pub Date : 2020-09-08 Stradder Caves; Jessica R. Baumann; Daniel S. Stich
Grass Carp Ctenopharyngodon idella is an herbivorous fish that has been stocked throughout the United States for aquatic plant control, commonly to manage hydrilla Hydrilla verticillata. Triploid Grass Carp were purported to have a mean lifespan of about 11 years based on otolith‐assigned ages and mortality estimates for fish associated with large stocking efforts through which aquatic plants were