Karen J. Murchie

Karen J. Murchie
Shedd Aquarium · Conservation and Research

Doctor of Philosophy

About

55
Publications
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1,790
Citations

Publications

Publications (55)
Article
Full-text available
The United Nations Sustainable Development Goals (SDGs) are a unifying call for change - guiding global actions at multiple levels of governance for a better planet and better lives. Consequently, achieving the “future we want” may be hindered by overlooking valuable natural resources and services that are not explicitly included in the SDGs. Not r...
Article
There is growing evidence that bioenergetics can explain relationships between environmental conditions and fish behaviour, distribution, and fitness. Fish energetic needs increase predictably with water temperature, but metabolic performance (i.e., aerobic scope) exhibits varied relationships, and there is debate about its role in shaping fish eco...
Article
We present a pilot curriculum for engaging high school students in photojournalism, combining a field trip and a photo essay, that can be expanded by fisheries professionals for their own education and outreach efforts, whether in conjunction with annual meetings or stand‐alone events. At the 2018 American Fisheries Society Annual Meeting in Atlant...
Chapter
a.Aim: To demonstrate the societal values of inland fishes through nine services provided by inland fishes. Each service is defined, key stakeholders identified, and threats enumerated. Diverse case studies (geography, taxonomy, fishery-type) provide examples to highlight the societal values around the world. b.Main concepts: Nine societal services...
Article
Guidance on improving the visual aspects of science communication range from “recipe”-style instructions to hyper-focused aspects of data visualization. Currently lacking in the peer-reviewed literature is a primer in graphic design tailored to a high-level overview of basic design principles and associated jargon related to layout, imagery, typefa...
Article
Full-text available
Inland fish provide food for billions and livelihoods for millions of people worldwide and are integral to effective freshwater ecosystem function, yet the recognition of these services is notably absent in development discussions and policies, such as the United Nations Sustainable Development Goals (SDGs). How might the SDGs be enhanced if inland...
Article
As technology advances and smartphone use continues to rise, so do the opportunities for communitymembers to collect valuable scientific data via their smart phones. While the iNaturalist project andphone application (app) are widely known and used, only a fraction (<1.5%) of the >26 million observa-tions logged to date represent fishes. To increas...
Article
Full-text available
Migration is a widespread but highly diverse component of many animal life histories. Fish migrate throughout the world's oceans, within lakes and rivers, and between the two realms, transporting matter, energy, and other species (e.g., microbes) across boundaries. Migration is therefore a process responsible for myriad ecosystem services. Many hum...
Article
Full-text available
Telemetry is an increasingly common tool for studying the ecology of wild fish, with great potential to provide valuable information for management and conservation. For researchers to conduct a robust telemetry study, many essential considerations exist related to selecting the appropriate tag type, fish capture and tagging methods, tracking proto...
Article
Full-text available
• The ecosystem services provided by freshwater biodiversity are threatened by development and environmental and climate change in the Anthropocene. • Here, case studies are described to show that a focus on the shared dependence on freshwater ecosystem functioning can mutually benefit fisheries and conservation agendas in the Anthropocene. • Meeti...
Article
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We used stable isotope analysis to examine ontogenetic patterns in the resource use dynamics of bonefish (Albula vulpes) collected from two locations (Banks and Atlantic) within the coastal waters of Eleuthera, The Bahamas. A marked shift in δ13C signatures between leptocephali and juveniles reflected a rapid change in resource use, likely from pel...
Article
Full-text available
The harvest of marine resources has long‐standing cultural and economic importance to The Bahamas and other small island developing states. Tourists and residents place a demand on local marine resources, particularly Caribbean spiny lobster, Panulirus argus (Latreille), queen conch, Lobatus gigas (Linnaeus) and Nassau grouper, Epinephelus striatus...
Article
Full-text available
Carbon and nitrogen stable isotopes (δ13C and δ15N) were used to examine trophic niche dynamics of three co-occurring predators in The Bahamas. Variable estimates of core trophic niche width and total trophic niche overlap were observed between nurse sharks (Ginglymostoma cirratum), southern stingrays (Hypanus americanus), and Atlantic chupare stin...
Article
Stable isotope analysis (SIA) of carbon (δ13C) and nitrogen (δ15N) is a common tool used to examine aspects of elasmobranch biology and ecology; however, accurate ecological interpretation of stable isotope values require knowledge of lipid and urea dynamics, and the variable turnover rates of different tissue types. Here we examined lipid and urea...
Article
Full-text available
Mangroves are critically important habitats for fisheries, bothfor their resident fish, crustacean, and mollusk populations and as nurserygrounds for the target species of offshore fisheries. However, the spatial variationin the benefits provided by mangroves to fisheries is poorly understood.Based on expert knowledge of mangrove ecology and fisher...
Article
Full-text available
Development on Grand Bahama in the Baha-mian Archipelago during the 1950's to 1970's resulted in substantial changes to the island's geography. Hawks-bill Creek, which potentially served as a natural migration route for fish from the north side to the south side of the island, was severed and replaced by a man-made canal called the Grand Lucayan Wa...
Article
Full-text available
Knowledge of the swimming energetics and thermal ecology of sub-tropical and tropical coastal species is extremely limited, yet this information is critical for understanding animal–environment relationships in the face of climate change. Using the ecologically and economically important sportfish, bonefish (Albula vulpes), we determined the critic...
Article
Full-text available
Mangrove habitats are among the most threatened coastal habitats. Loss and degradation of mangroves have broad impacts because mangroves are important in prevention of coastal erosion, are excellent at carbon sequestration, and are critical habitats for many marine and estuarine fishes, including coral reef species. However, these species often lac...
Article
Full-text available
Three adjacent tidal creek systems (Page, Kemps, and Broad creeks) on Cape Eleuthera, The Bahamas were studied to quantify the variation in fish community structure and habitat characteristics over small (<5 km) spatial scales. Snorkeling transects were used to census the fish community on a summer new moon during slack high tide and involved the s...
Data
Full-text available
Sport fishing for sharks, including fishing with the intent to release, is becoming more prevalent within the recreational angling community. Common targets of recreational anglers are juvenile lemon sharks (Negaprion brevirostris) that frequent shallow tropical nearshore habitats. In this study, we captured 32 juvenile lemon sharks (530–875 mm tot...
Article
Full-text available
Sport fishing for sharks, including fishing with the intent to release, is becoming more prevalent within the recreational angling community. Common targets of recreational anglers are juvenile lemon sharks (Negaprion brevirostris) that frequent shallow tropical nearshore habitats. In this study, we captured 32 juvenile lemon sharks (530–875 mm tot...
Article
Full-text available
The advent and widespread adoption of electronic tags (including biotelemetry and biologging devices) for tracking animals has provided unprecedented information on the biology, management, and conservation of fish in the world’s oceans and inland waters. However, use of these tools is not without controversy. Even when scientific and management ob...
Article
The consequences of stress on the behaviour of wild creek chub Semotilus atromaculatus outside the reproductive period were studied using a single intra-coelomic injection of cortisol, suspended in coconut butter, to experimentally raise plasma cortisol levels. Behaviour between cortisol-treated, sham-treated (injected with coconut butter) and cont...
Article
The inland fisheries of North America (i.e. Canada and the United States of America) are diverse in terms of the sectors that harvest fish, the waters fished and the species targeted. Aboriginal fisheries have a long tradition of harvesting fish for food and ceremonial purposes using gears such as dip nets and spears, and targeting species such as...
Conference Paper
Walleye is an important commercial and recreational fish in Saginaw Bay, Lake Huron. Walleye spawning in the Tittabawassee River, tributary to Saginaw Bay, represent the largest spawning stock of walleye in Lake Huron. Understanding walleye movement and thermal ecology will help better define the scope and timing of movement of segments of this sto...
Data
Full-text available
Catch-and-release science has revealed that one of the strongest correlates of mortality for fishes is deep hooking in areas such as the esophagus, gills, or stomach, which is largely influenced by gear choice and angler behavior. Circle hooks represent a gear type that has been shown to reduce incidences of deep hooking, but not for all species or...
Article
Full-text available
The sustainable seafood movement has adopted a variety of certification and ecolabeling systems, as well as seafood-awareness campaigns, to influence industry and help consumers make informed decisions regarding their seafood consumption. However, a review of these programs revealed that the majority are focused on marine and coastal fisheries. Glo...
Article
Full-text available
Anesthetics immobilize fish, reducing physical damage and stress during aquaculture practices, stock assessment, and experimental procedures. Currently, only tricaine methanesulfonate (MS-222) is approved for use as an anesthetic for food fish in Canada and the United States; however, MS-222 can only be used with certain fish species, and treated f...
Article
Full-text available
To identify the timing and location of spawning activity for bonefish (Albula spp.) in the Bahamian archipelago, we used an acoustic telemetry array spanning 44km2 of shallow tidal creeks, flats, and adjacent deeper coastal waters near Cape Eleuthera. In two successive years, we surgically implanted transmitters in male and female bonefish (n=60) a...
Article
a b s t r a c t Little is known about the thermal tolerances of fish that occupy tropical intertidal habitats or how their distribution, physiological condition, and survival are influenced by water temperature. We used a combination of laboratory and field approaches to study the thermal biology of bonefish, Albula vulpes, a fish species that reli...
Article
Full-text available
Documenting free-swimming fish in their natural environment using acoustic transmitters equipped with acceleration and pressure sensors may contribute to knowledge of locomotory behaviour for a variety of aquatic species. Previously, collection of acceleration data has been limited to archival loggers, necessitating retrieval of the devices; howeve...
Article
We tested the utility of acoustic tri-axial acceleration transmitters in combination with ethogram and respirometry studies to quantify the activity patterns and field metabolic rates of free-swimming bonefish (Albula vulpes) in the coastal waters of Eleuthera, The Bahamas. Bonefish were found to exhibit relatively low activity levels in the field...
Conference Paper
Bonefish (Albula spp) inhabit nearshore tidal flats throughout the tropical Western Atlantic. Although bonefish are the foundation of a lucrative catch-and-release fishery, conservation and management efforts are hindered by the dearth of information on the species’ fundamental life history characteristics, including age and growth. To date, age an...
Article
Full-text available
Fisheries exploitation and habitat alteration are threatening lemon shark (Negaprion bevirostris) populations because they use nearshore regions as nursery sites. As such, there is a need for information on the spatial ecology of juvenile lemon sharks to identify critical habitats that require protection, as well as to understand their basic ecolog...
Article
Full-text available
The intracoelomic surgical implantation of electronic tags (including radio and acoustic telemetry transmitters, passive integrated transponders and archival biologgers) is frequently used for conducting studies on fish. Electronic tagging studies provide information on the spatial ecology, behavior and survival of fish in marine and freshwater sys...
Article
Full-text available
In a graduate school setting, there often seems to be only a handful of ways to give back to science. These opportunities may include presenting findings in publications or at confer-ences, delivering a guest lecture, or acting as a teaching assistant for a class or laboratory. One can also become involved in outreach activities through professiona...
Article
Full-text available
Body composition and fish health indices of bonefish Albula vulpes were investigated to elucidate the energy dynamics in poorly studied tropical tidal flat environments. In general, bonefish were composed of 72% water, 21% protein, 4% ash, and 3% lipids, which is consistent with the wet weight values of the majority of freshwater and marine fish st...
Article
Throughout their circumtropical distribution, bonefish (Albula spp.) play a vital role in local economies as a highly prized sport fish. Recent interest in stock enhancement to sustain bonefish fisheries has led to the recognition that there currently are no data on how to live capture large numbers of adults (potential broodstock), transport them...
Article
Throughout their circumtropical distribution, bone-¢sh (Albula spp.) play a vital role in local economies as a highly prized sport ¢sh. Recent interest in stock enhancement to sustain bone¢sh ¢sheries has led to the recognition that there currently are no data on how to live capture large numbers of adults (poten-tial broodstock), transport them to...
Article
A study was conducted on bonefish Albula vulpes in The Bahamas to assess the utility of portable physiological diagnostic tools (i-STAT analyser with E3+ ion and haematology cartridge, ACCU-CHEK glucose meter and Lactate Pro lactate meter) for field physiology applications in remote locations. Physiological values derived from portable diagnostic t...
Article
Globally, rivers are increasingly being subjected to various levels of physical alteration and river regulation to provide humans with services such as hydropower, freshwater, flood control, irrigation and recreation. Although river regulation plays an important role in modern society, there are potential consequences which may negatively affect fi...
Article
Current understanding of the stress response in fishes has largely come from studies of freshwater-adapted salmonids, with proportionately few comparative studies having examined marine fishes. The current study sought to quantify the magnitude of physiological disturbances, recovery dynamics, and post-exercise behaviour in bonefish (Albula vulpes;...
Article
Technological advances have lead to the production of micro radio-transmitters capable of being implanted in fish as small as c. 5 g. Although the actual tags are small, transmitters are equipped with long antennas that can increase drag and tangle in debris. We examined the effects of radio-transmitter antenna length on the swimming performance of...
Article
Full-text available
Coded electromyogram telemetry transmitters were used to examine the effects of varying flows on the relative activity of brook trout Salvelinus fontinalis and walleye Sander vitreus in a regulated river. The relative activity levels of two brook trout and two walleyes were continuously monitored for a minimum of 24 h, and measurements were compare...
Article
1. Isotopic signatures (δ15N and δ13C) from young-of-the-year (YOY) yellow perch (Perca flavescens) were collected over the initial 4 month summer growing period from three separate and distinctive sites in northern Alberta, Canada. Data were analysed to test the hypotheses that there are within- and among-population differences in the patterns of...

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Projects

Project (1)
Project
To examine trophic interactions and broad-scale dynamics of Bahamian ecosystems using stable isotope analysis.