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Full-Text Articles in Marine Biology
The Case Of The ‘Missing’ Arctic Bivalves And The Walrus: The Biggest [Overlooked] Clam Fishery On The Planet, Roger L. Mann, Eric N. Powell, Daphne M. Munroe
The Case Of The ‘Missing’ Arctic Bivalves And The Walrus: The Biggest [Overlooked] Clam Fishery On The Planet, Roger L. Mann, Eric N. Powell, Daphne M. Munroe
VIMS Articles
Bivalve molluscs represent a significant proportion of the diet of both Atlantic and Pacific walrus (Odobenus rosmarus rosmarus and Odobenus rosmarus divergens, respectively) and are pivotal to benthic–pelagic coupling and carbonate cycling in the Arctic oceans. The latter is of particular relevance in a period of seasonal ice retreat, freshwater release into associated surface waters, decreasing water pH, and possible undersaturation of Arctic waters with respect to aragonite. Using population estimates and predation rates for the walruses on bivalve molluscs, a conservative estimate of bivalve consumption in the regions of active walruses foraging is 2.0–3.0 3 106 tonnes y–1—a tonnage …
Estimating Shifts In Phenology And Habitat Use Of Cobia In Chesapeake Bay Under Climate Change, Daniel P. Crear, Brian E. Watkins, Marjorie A.M. Friedrichs, Pierre St-Laurent, Kevin C. Weng
Estimating Shifts In Phenology And Habitat Use Of Cobia In Chesapeake Bay Under Climate Change, Daniel P. Crear, Brian E. Watkins, Marjorie A.M. Friedrichs, Pierre St-Laurent, Kevin C. Weng
VIMS Articles
Cobia (Rachycentron canadum) is a large coastal pelagic fish species that represents an important fishery in many coastal Atlantic states of the U.S. They are heavily fished in Virginia when they migrate into Chesapeake Bay during the summer to spawn and feed. These coastal habitats have been subjected to warming and increased hypoxia which in turn could impact the timing of migration and the habitat suitability of Chesapeake Bay. With conditions expected to worsen, we project current and future habitat suitability of Chesapeake Bay for cobia and predict changes in their arrival and departure times as conditions shift. To do …
The Power Struggle: Assessing Interacting Global Change Stressors Via Experimental Studies On Sharks, Ian A. Bouyoucos, Sue-Ann Watson, Serge Planes, Colin A. Simpfendorfer, Gail D. Schwieterman, Et Al
The Power Struggle: Assessing Interacting Global Change Stressors Via Experimental Studies On Sharks, Ian A. Bouyoucos, Sue-Ann Watson, Serge Planes, Colin A. Simpfendorfer, Gail D. Schwieterman, Et Al
VIMS Articles
Ocean warming and acidification act concurrently on marine ectotherms with the potential for detrimental, synergistic effects; yet, effects of these stressors remain understudied in large predatory fishes, including sharks. We tested for behavioural and physiological responses of blacktip reef shark (Carcharhinus melanopterus) neonates to climate change relevant changes in temperature (28 and 31 °C) and carbon dioxide partial pressures (pCO2; 650 and 1050 µatm) using a fully factorial design. Behavioural assays (lateralisation, activity level) were conducted upon 7–13 days of acclimation, and physiological assays (hypoxia tolerance, oxygen uptake rates, acid–base and haematological status) were …
Sensitivity Of A Shark Nursery Habitat To A Changing Climate, Daniel Crear, Robert Latour, Marjorie A.M. Friedrichs, Pierre St-Laurent, Kevin C. Weng
Sensitivity Of A Shark Nursery Habitat To A Changing Climate, Daniel Crear, Robert Latour, Marjorie A.M. Friedrichs, Pierre St-Laurent, Kevin C. Weng
VIMS Articles
Nursery area habitats such as estuaries are vital for the success of many fish populations. Climate change is altering conditions in these areas, which can thus impact the availability of suitable nursery habitat. The sandbar shark Carcharhinus plumbeus uses Chesapeake Bay (USA) as a nursery habitat during the summer months from birth up to 10 yr of age. To assess the impacts of climate change on juvenile sandbar sharks, we developed a habitat model using longline data collected from a fishery-independent survey within Chesapeake Bay. With this model, we projected contemporary and future distributions of suitable habitat for juvenile sandbar …
Effects Of Seawater Exchange On Water Chemistry Among Coastal Lakes With Intermittent Connections To The Sea, A. Challen Hyman, Dana Bigham Stephens
Effects Of Seawater Exchange On Water Chemistry Among Coastal Lakes With Intermittent Connections To The Sea, A. Challen Hyman, Dana Bigham Stephens
VIMS Articles
Intermittently closed and open lakes and lagoons (ICOLLs) are a dynamic class of coastal waterbodies with the unique feature of intermittently connecting to the sea. Understanding the functioning and potential threats of these globally rare systems is important to their preservation and protection. Coastal dune lakes of northwest Florida are one example of an understudied group of ICOLLs which connect with the Gulf of Mexico for brief periods of time. Using a 17-year, monthly water chemistry dataset, we analyzed long-term patterns in water chemistry among 16 coastal dune lakes. Using salinity as a proxy for frequency of seawater inflows, principal …
Identifying Important Juvenile Dusky Shark Habitat In The Northwest Atlantic Ocean Using Acoustic Telemetry And Spatial Modeling, Charles W. Bangley, Tobey H. Curtis, David H. Secor, Robert J. Latour, Matthew B. Ogburn
Identifying Important Juvenile Dusky Shark Habitat In The Northwest Atlantic Ocean Using Acoustic Telemetry And Spatial Modeling, Charles W. Bangley, Tobey H. Curtis, David H. Secor, Robert J. Latour, Matthew B. Ogburn
VIMS Articles
Highly mobile species can be challenging for fisheries management and conservation due to large home ranges combined with dependence on discrete habitat areas where they can be easily targeted or vulnerable to anthropogenic disturbances. Management of the Dusky Shark Carcharhinus obscurus in the northwest Atlantic Ocean has been particularly challenging due to the species' inherent vulnerability to overfishing and poorly understood habitat associations. To better understand habitat associations and seasonal distributions, we combined telemetry and remotely sensed environmental data to spatially model juvenile Dusky Shark presence probability in the northwest Atlantic Ocean. To accomplish this, 22 juvenile Dusky Sharks (107-220 …
Improving Production Of The Eastern Oyster Crassostrea Virginica Through Coordination Of Genetic Improvement Programs, Research, And Technology Transfer Activities, Standish K. Allen Jr., Caird Rexroad Iii, Robert Rheault
Improving Production Of The Eastern Oyster Crassostrea Virginica Through Coordination Of Genetic Improvement Programs, Research, And Technology Transfer Activities, Standish K. Allen Jr., Caird Rexroad Iii, Robert Rheault
VIMS Articles
The East Coast Shellfish Growers Association has been actively advocating for continued improvement of breeding infrastructure to support a vibrant and ecologically crucial industry. This white paper acknowledges these efforts and is meant to serve as a paradigm for oyster breeding on the East Coast. The vision is relatively straightforward; however, its execution—like most things—will be fraught with detail and inertia. Yet describing simply the idea without articulating some detail and potential roadblocks would be misleading. Instead, we present a picture of a breeding paradigm as it might play out across the entire range of a species. At this particular …
Evaluating Movements Of Opakapaka (Pristipomoides Filamentosus) Relative To A Restricted Fishing Area By Using Acoustic Telemetry And A Depth-Constrained Estimator Of Linear Home Ranges, Stephen R. Scherrer, Kevin C. Weng
Evaluating Movements Of Opakapaka (Pristipomoides Filamentosus) Relative To A Restricted Fishing Area By Using Acoustic Telemetry And A Depth-Constrained Estimator Of Linear Home Ranges, Stephen R. Scherrer, Kevin C. Weng
VIMS Articles
Networks of no-take fishery reserves have emerged as a tool for managing deepwater fish species. In Hawaii and elsewhere, such areas are used to manage deepwater snapper species. However, little is known regarding the movements of these species relative to protected areas. We used passive acoustic telemetry to track crimson jobfish (Pristipomoides filamentosus), also known as opakapaka, in one of Hawaii’s bottomfish restricted fishing areas to understand the size required for a reserve to protect this species. From January 2017 through January 2018, 179 fish were tagged. Only 10 fish were classified as alive on the basis of movements indicated …
Fish Biodiversity Patterns Of A Mesophotic-To-Subphotic Artificial Reef Complex And Comparisons With Natural Substrates, St Jones, Jm Asher, Rc Boland, Bk Kanenaka, Kevin C. Weng
Fish Biodiversity Patterns Of A Mesophotic-To-Subphotic Artificial Reef Complex And Comparisons With Natural Substrates, St Jones, Jm Asher, Rc Boland, Bk Kanenaka, Kevin C. Weng
VIMS Articles
Artificial reefs act as high-rugosity habitats and are often deployed to enhance fishing; however, the effects of man-made features on fish communities can be unpredictable and are poorly understood in deeper waters. In this study, we used a submersible to describe a deep-water artificial reef complex (93-245 m) off of Ewa Beach, Oahu, Hawaii, USA, and evaluated possible conservation and/or fisheries-related contributions. Sixty-eight species were recorded, with larger features supporting greater diversity of species. Species composition changed strongly with depth and a faunal break was detected from 113-137 m. While the features supported diverse fish communities, they were not similar …
In The Face Of Climate Change And Exhaustive Exercise: The Physiological Response Of An Important Recreational Fish Species, Daniel P. Crear, Richard Brill, Lauren M.L. Averilla, Sara C. Meakem, Kevin C. Weng
In The Face Of Climate Change And Exhaustive Exercise: The Physiological Response Of An Important Recreational Fish Species, Daniel P. Crear, Richard Brill, Lauren M.L. Averilla, Sara C. Meakem, Kevin C. Weng
VIMS Articles
Cobia (Rachycentron canadum) support recreational fisheries along the US mid- and south-Atlantic states and have been recently subjected to increased fishing effort, primarily during their spawning season in coastal habitats where increasing temperatures and expanding hypoxic zones are occurring due to climate change. We therefore undertook a study to quantify the physiological abilities of cobia to withstand increases in temperature and hypoxia, including their ability to recover from exhaustive exercise. Respirometry was conducted on cobia from Chesapeake Bay to determine aerobic scope, critical oxygen saturation, ventilation volume and the time to recover from exhaustive exercise under temperature and …
Timing Of The Reproductive Cycle Of Waved Whelk, Buccinum Undatum, On The Us Mid-Atlantic Bight, Sarah Borsetti, Daphne Munroe, David Rudders, Jul-Han Chang
Timing Of The Reproductive Cycle Of Waved Whelk, Buccinum Undatum, On The Us Mid-Atlantic Bight, Sarah Borsetti, Daphne Munroe, David Rudders, Jul-Han Chang
VIMS Articles
Development of the unmanaged waved whelk (Buccinum undatum) fishery on the Mid-Atlantic continental shelf of the United States has initiated investigation into fisheries-related biological and population attributes of the species in this region. Maturation and reproduction timing vary by location for this species and are likely linked to bottom water temperature. This study examined the seasonal fluctuations in relevant body metrics and gonadosomatic index in relation to bottom temperature to assess the timing of the reproductive cycle of the B. undatum population in the southern-most extent of this species' range in the Atlantic. To characterize variation over the maturation schedule, …
Investigating The Efficacy Of A Proposed Marine Protected Area For The Endangered Humphead Wrasse Cheilinus Undulatus At A Remote Island Group In Seychelles, Ryan Daly, Clare A. Keating, Andrew E. Gray, Lauren R. Peel, Luke Gordon, James S.E. Lea, Christopher R. Clarke, Kevin C. Weng
Investigating The Efficacy Of A Proposed Marine Protected Area For The Endangered Humphead Wrasse Cheilinus Undulatus At A Remote Island Group In Seychelles, Ryan Daly, Clare A. Keating, Andrew E. Gray, Lauren R. Peel, Luke Gordon, James S.E. Lea, Christopher R. Clarke, Kevin C. Weng
VIMS Articles
The humphead wrasse Cheilinus undulatus is an iconic, ecologically important and Endangered fish species associated with coral reefs in the Indo-Pacific region. Due to its large size and complex life history characteristics, it is vulnerable to overfishing and has undergone substantial population declines in parts of its range. Knowledge of the species’ movement ecology is currently limited to only 2 previous studies, and very little is known about populations in the western Indian Ocean. The present study aimed to use passive acoustic telemetry to investigate the importance of a remote coral reef to a population of humphead wrasse in the …
Comparative Transcriptomics Of Spotted Seatrout (Cynoscion Nebulosus) Populations To Cold And Heat Stress, Jingwei Song, Jan Mcdowell
Comparative Transcriptomics Of Spotted Seatrout (Cynoscion Nebulosus) Populations To Cold And Heat Stress, Jingwei Song, Jan Mcdowell
VIMS Articles
Resilience to climate change depends on a species' adaptive potential and phenotypic plasticity. The latter can enhance survival of individual organisms during short periods of extreme environmental perturbations, allowing genetic adaptation to take place over generations. Along the U.S. East Coast, estuarine‐dependent spotted seatrout (Cynoscion nebulosus) populations span a steep temperature gradient that provides an ideal opportunity to explore the molecular basis of phenotypic plasticity. Genetically distinct spotted seatrout sampled from a northern and a southern population were exposed to acute cold and heat stress (5 biological replicates in each treatment and control group), and their transcriptomic responses …