A5081227066- Fish Ecology and Management Studies
- Marine and fisheries research
- Ichthyology and Marine Biology
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Fish biology, ecology, and behavior
- Isotope Analysis in Ecology
- Marine animal studies overview
- Genetic diversity and population structure
- Marine and coastal plant biology
- Fish Biology and Ecology Studies
- Arctic and Antarctic ice dynamics
- Turtle Biology and Conservation
- Climate Change Communication and Perception
- Insect and Arachnid Ecology and Behavior
- Traumatic Ocular and Foreign Body Injuries
- Meningioma and schwannoma management
- Environmental DNA in Biodiversity Studies
- Marine Ecology and Invasive Species
- Venomous Animal Envenomation and Studies
- Identification and Quantification in Food
- Echinoderm biology and ecology
- Marine Biology and Ecology Research
- Paleontology and Evolutionary Biology
- Aquaculture Nutrition and Growth
National Oceanic and Atmospheric Administration
2022-2024
NOAA National Marine Fisheries Service
2021-2024
NOAA National Marine Fisheries Service West Coast Region
2021-2024
Harbor Branch Oceanographic Institute
2022
Florida Atlantic University
2022
Washington Department of Fish and Wildlife
2009-2021
University of South Florida
2005-2011
Whitney Museum of American Art
2007
The timing of reproduction influences key evolutionary and ecological processes in wild populations. Variation reproductive may be an especially important driver the marine environment, where high mobility many species few physical barriers to migration provide limited opportunities for spatial divergence arise. Using genomic data collected from spawning aggregations Pacific herring (
The discernment of populations as management units is a fundamental prerequisite for sustainable exploitation species. A lack clear stock boundaries complicates not only the identification spatial units, but also assessment mixed fisheries by population assignment and analysis. Many marine species, such Pacific cod, are characterized isolation distance, showing significant differentiation no boundaries. Here, we used restriction-site-associated DNA (RAD) sequencing to investigate structure...
Rockfish, Sebastes spp., are bottomfish that come in a variety of shapes, sizes and colors with 28 species recognized the Salish Sea. Based on increasing concern over long-term stability rockfish populations Washington by state federal agencies, Seattle Aquarium formalized benthic monitoring program starting 2005 rocky reefs west east Neah Bay, Washington. Diver-operated video (DOV) surveys were conducted annually to quantify patterns (rockfish other associated reefs) abundance time. Divers...
We examined historical and contemporary trends for a suite of groundfish species in Puget Sound, Washington, USA, to ask how the community has responded following shifts fishing regulations, climate, food web, growing human population surrounding watershed. used data (1990-2017) from standardized annual bottom trawl survey with logbook information (1948-1977) research vessel. account spatial temporal effects on catch rate by first fitting Bayesian model data, then using posterior...
Abstract The nurse shark, Ginglymostoma cirratum , is an obligate suction feeder that preys on benthic invertebrates and fish. Its cranial morphology exhibits a suite of structural functional modifications facilitate this mode prey capture. During suction‐feeding, subambient pressure generated by the ventral expansion hyoid apparatus floor its buccopharyngeal cavity. As in suction‐feeding bony fishes, shark expansive, compressive, recovery kinematic phases produce posterior‐directed water...
Abstract Estimating a population's growth rate and year‐to‐year variance is key component of population viability analysis ( PVA ). However, standard methods require time series counts obtained using consistent survey over many years. In addition, it can be difficult to separate observation process variance, which critical for . Time‐series performed with multivariate autoregressive state‐space MARSS ) models flexible statistical framework that allows one address these limitations. allow...
The bluntnose sixgill shark (Hexanchus griseus) is a widely distributed species found in tropical and temperate waters of every ocean, yet we know relatively little about their basic biology including life history population structure. From 2003–2007, collected over 300 biopsy samples from sixgills during research operations Puget Sound, WA, USA. Genotypic data using ten polymorphic microsatellites were used to describe genetic diversity, relatedness mating pattern. Diversity within was be...
Like many forage fish species, Pacific sand lance ( Ammodytes personatus ) play a key role in nearshore marine ecosystems as an important prey source for diverse array of predators the northeastern Pacific. However, primary threats to and their habitat are poorly defined due lack systematic data. Crucial information needed assess population status is also lacking including basic knowledge local regional abundance distribution. Sand currently listed ‘not evaluated’ under IUCN red list they...
This is the first in-situ study of feeding behaviors exhibited by bluntnose sixgill sharks. Bait was placed beneath Seattle Aquarium pier situated on waterfront in Elliott Bay, Puget Sound, Washington at 20m water depth. Cameras and lights were around bait box to record shark presence behavior while feeding. Analysis revealed that sixgills utilize a bite comparable many other elasmobranchs aquatic vertebrates, have ability protrude their upper jaw, change based situation, employ sawing...
Development of the ability to capture prey is crucial predator survival. Trends in food-capture performance over early ontogeny were quantified for leopard sharks Triakis semifasciata and whitespotted bamboosharks Chiloscyllium plagiosum by measuring suction pressure flow front mouth during feeding. At any size, C. produce greater subambient ingest more rounded water parcels. Maximum scaled with negative allometry T. was accompanied an increase time reach maximum gape. Despite a similar...
The broadnose sevengill shark, Notorynchus cepedianus, a common coastal species in the eastern North Pacific, was sampled during routine capture and tagging operations conducted from 2005–2012. One hundred thirty three biopsy samples were taken these research Willapa Bay, Washington San Francisco California. Genotypic data seven polymorphic microsatellites (derived related sixgill Hexanchus griseus) used to describe N. cepedianus genetic diversity, population structure relatedness. Diversity...
The broadnose sevengill shark ( Notorynchus cepedianus ) is a large, apex predator found in temperate waters around the world. Yet data on their distribution are limited, with reports of species occurrence typically restricted to specific bays or estuaries where they have been historically observed high seasonal abundances. Puget Sound located southern portion Salish Sea, large estuary spanning border between northwestern Washington state, USA and southwestern British Columbia, Canada,...
Abstract Ant‐lions are pit‐building larvae (Neuroptera: Myrmeleontidae), which possess relatively large mandibles used for catching and consuming prey. Few studies involving terrestrial arthropod larva have investigated prey capture behavior kinematics no study has shown modulation of strike kinematics. We examined feeding the ant‐lion, Myrmeleon crudelis , using high‐speed video to investigate whether modulate based on location relative mandible. Based seven events from five M. took 17.60 ±...
Abstract Forage fish undergo dramatic changes in abundance through time. Long-term fluctuations, which have historically been attributed to recruitment, may also be due adult mortality. Pacific herring, a lightly exploited forage Puget Sound, WA, exhibited shifts age structure and decreases spawning biomass during the past 30 years. Here, we investigate mortality as potential explanation for these shifts. Using hierarchical, age-structured population model, indicate that natural Sound...
Sharks are the primary predator of large immature and mature sea turtles, yet shark species responsible for both lethal non-lethal injuries rarely identified. Forensic analysis bite wounds can be used to accurately assess size potential when combined with observations on species-specific feeding behavior, geographic distribution, habitat preference. The objective this study was use forensic damage turtles infer species. Photographs from 13 cases documented predation (n = 10) scavenging 3)...