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Articles 1 - 30 of 56
Full-Text Articles in Entire DC Network
Natural Capital Value Of Fisheries Under Environmental Stressor: A Case Of Blue Crab Under Hypoxia In The Gulf Of Mexico, Shelby Leigh Brewer
Natural Capital Value Of Fisheries Under Environmental Stressor: A Case Of Blue Crab Under Hypoxia In The Gulf Of Mexico, Shelby Leigh Brewer
Theses and Dissertations
Environmental threats to fisheries are a rising concern for fishery managers. Gulf of Mexico hypoxia is particularly concerning. In order to properly manage Gulf fisheries, the sustainability of species stock and its natural capital values should be analyzed. As an empirical effort, I use blue crab in Louisiana waters as a case study to build a bioeconomic model of blue crab under hypoxia. I apply the natural capital valuation approach to estimate the blue crab value function under hypoxia in order to assess blue crab sustainability. I find that blue crab management in Louisiana under hypoxia is not sustainable, being …
Oyster Economics: Simulated Costs, Market Returns, And Nonmarket Ecosystem Benefits Of Harvested And Nonharvested Reefs, Off-Bottom Aquaculture,And Living Shorelines, Daniel R. Petrolia, William C. Walton, Just Cebrian
Oyster Economics: Simulated Costs, Market Returns, And Nonmarket Ecosystem Benefits Of Harvested And Nonharvested Reefs, Off-Bottom Aquaculture,And Living Shorelines, Daniel R. Petrolia, William C. Walton, Just Cebrian
VIMS Articles
We simulate expected costs, market returns, and nonmarket ecosystem benefits associated with four oyster resources: harvested bottom reefs, off-bottom aquaculture, nonharvested (restored) reefs, and living shorelines. Benefit categories include market returns from harvest, improved water quality (reduced nitrogen), habitat for other species (blue crab and red drum), and shoreline protection. Bottom reefs and off-bottom aquaculture yield both market returns and nonmarket ecosystem benefits, whereas nonharvested reefs and living
shorelines yield only nonmarket ecosystem benefits. Overall gross benefits are expected to be greater and much more variable for off-bottom aquaculture and living shorelines relative to harvested and nonharvested reefs. We find …
Preferences For Derelict Gear Mitigation Strategies By Commercial Fishers, James A. Delbene, Andrew M. Scheld, Donna Marie Bilkovic
Preferences For Derelict Gear Mitigation Strategies By Commercial Fishers, James A. Delbene, Andrew M. Scheld, Donna Marie Bilkovic
VIMS Articles
Local, national, and international efforts to address the issue of derelict fishing gear are often limited by resources and costs. Managers and policymakers have implemented various preventative, impact reducing, and curative measures to decrease derelict fishing gear abundance and impacts, but stakeholder support is essential for success. To identify stakeholder preferences and the most efficient measures to address the issue of derelict blue crab pots in Chesapeake Bay, we distributed a stated preference survey with a discrete choice experiment to 1,032 licensed commercial fishers in Virginia and received a 42% response rate. The choice experiment consisted of hypothetical scenarios with …
Patterns Of Habitat Use And Trophic Structure In Turtle Grass (Thalassia Testudinum)-Dominated Systems Across The Northern Gulf Of Mexico, Christian Hayes
Patterns Of Habitat Use And Trophic Structure In Turtle Grass (Thalassia Testudinum)-Dominated Systems Across The Northern Gulf Of Mexico, Christian Hayes
Dissertations
Seagrass structural complexity is a primary driver of nekton recruitment and faunal community structure. Few studies, however, have quantified the role of seagrass complexity on habitat use and trophic structures over large spatial scales. A large-scale simultaneous survey was conducted to assess relationships of multiple seagrass morphological complexity metrics to nekton habitat use, trophic dynamics, and blue crab (Callinectes sapidus) growth and mortality across the Northern Gulf of Mexico. Seagrass morphological and nekton community characteristics depended on site and season, and regional variation in seagrass morphology was an important driver of juvenile nekton abundance, species richness, beta diversity, …
Migratory Movement, Fishery Exploitation, And Sperm Limitation Of The Louisiana Blue Crab Spawning Stock, Helen Olmi-Graham
Migratory Movement, Fishery Exploitation, And Sperm Limitation Of The Louisiana Blue Crab Spawning Stock, Helen Olmi-Graham
Dissertations
Effective management of commercial fisheries is a challenge as it must balance social, economic, and biologic costs for the betterment of the population in the long term, while also sustaining the fishermen who rely on the industry in the short term. The first step in establishing an effective balanced management plan is to understand the biology and habitat use of the exploited stock. Blue crabs are one of the most commercially and ecologically significant species in the United States. Coast-wide U.S. commercial landings in 2019 totaled 147 million pounds for a dockside value of $206 million. Blue crabs also play …
Evaluating Optimal Removal Of Derelict Blue Crab Pots In Virginia, Us, Andrew M. Scheld, Donna M. Bilkovic, Kirk J. Havens
Evaluating Optimal Removal Of Derelict Blue Crab Pots In Virginia, Us, Andrew M. Scheld, Donna M. Bilkovic, Kirk J. Havens
VIMS Articles
Derelict fishing gear is a growing concern in many fisheries and coastal communities. Pots and traps are prevalent forms of derelict fishing gear with numerous documented harmful effects. In the Chesapeake Bay, US, a large blue crab (Callinectes sapidus) pot fishery produces high levels of derelict gear. From 2008 to 2014, 34,408 derelict pots were removed from blue crab fishing areas in Virginia. This research first evaluates whether observed increases in catch rates occurring contemporaneously with the removal program were the result of derelict gear removals. An econometric production model is then used to estimate marginal removal benefits …
Stable Isotope Analysis Of An Invasive Crab Species, Charybdis Hellerii, In The Indian River Lagoon, Justin R. Meyer
Stable Isotope Analysis Of An Invasive Crab Species, Charybdis Hellerii, In The Indian River Lagoon, Justin R. Meyer
Honors Undergraduate Theses
The world has never been more connected than it is today. While this is true for people, it is also true for Earth's flora and fauna. Unfortunately, this connectedness has contributed to unprecedented invasive species introductions around the world. Most introductions result in an introduced species dying out in the newly invaded territory and never becoming established. Other introduced species establish and persist for years, but never have a noticeable effect on local ecosystems. However, occasionally, an invasive species gets introduced to a new area and has negative impacts on native plant and animal life. The Indo-Pacific swimming crab, Charybdis …
Effects Of Chemical Dispersant (Corexit® Ec9500a) On Gill Structure And Function, And The Associated Crustacean Hyperglycemic Hormone Mediated Stress Response In The Blue Crab (Callinectus Sapidus), Amanda Christine Weiner
Effects Of Chemical Dispersant (Corexit® Ec9500a) On Gill Structure And Function, And The Associated Crustacean Hyperglycemic Hormone Mediated Stress Response In The Blue Crab (Callinectus Sapidus), Amanda Christine Weiner
All ETDs from UAB
Chemical dispersants are fast becoming the most widely used tool in the remediation of spilled oil. The sheer magnitude of the Deepwater Horizon oil spill necessitated the use of multiple forms of remediation at scales never attempted. As a result, there is a critical need to understand how the spill and ensuing cleanup efforts impacted the surrounding ecosystem and its inhabitants. The goal of this research is to better understand the impact of the chemical dispersant (Corexit®EC9500A) on a key ecological and economic species, the blue crab (Callinectes sapidus), in the Gulf of Mexico. The first part of my dissertation …
Eat Mor Chikin!: A Case Study In Economic Efficiency And Sustainability, Thomas Andrews
Eat Mor Chikin!: A Case Study In Economic Efficiency And Sustainability, Thomas Andrews
Sustainability Research & Practice Seminar Presentations
No abstract provided.
Nursery Exposure Of Oyster Spat To Different Predators Strengthens Oyster Shells, Melanie Ponce, Benjamin Belgrad, William Walton, Lee Smee
Nursery Exposure Of Oyster Spat To Different Predators Strengthens Oyster Shells, Melanie Ponce, Benjamin Belgrad, William Walton, Lee Smee
Gulf and Caribbean Research
No abstract provided.
Marine Biology Internship Gave Gardner-Webb Senior Opportunity To Improve Lab Skills, Office Of University Communications
Marine Biology Internship Gave Gardner-Webb Senior Opportunity To Improve Lab Skills, Office Of University Communications
Gardner-Webb NewsCenter Archive
Ivy Spratling, ’20, of Augusta, Ga., was introduced to Gardner-Webb University in high school. She attended a GWU soccer camp, and later earned a scholarship to play on the team. However, her decision to attend the University was based on more than athletics.
Nutrient Controls Over Cyanobacterial Synthesis Of The Neurotoxin Β-N-Methylamino-L-Alanine (Bmaa) And Its Potential Accumulation In The Blue Crab (Callinectes Sapidus), Madeline M. Hummel
Nutrient Controls Over Cyanobacterial Synthesis Of The Neurotoxin Β-N-Methylamino-L-Alanine (Bmaa) And Its Potential Accumulation In The Blue Crab (Callinectes Sapidus), Madeline M. Hummel
OES Theses and Dissertations
Cyanobacteria are known to produce a variety of toxins that negatively impact both aquatic and terrestrial organisms. One putative neurotoxic compound is the non-protein amino acid β-N-methylamino-L-alanine (BMAA), which has epidemiological linkages to the development of several human neurological diseases. Three cyanobacterial species thought to produce BMAA —Microcystis aeruginosa, Synechococcus bacillaris, and Nostoc sp. —were grown in nutrient replete cultures to examine its synthesis and cellular distribution over a growth cycle. Production of BMAA was also examined in nutrient (nitrogen and phosphorus) deplete cultures of Microcystis aeruginosa. In addition, natural assemblages of phytoplankton dominated by …
Restoring The Population Of Keystone Species In The Chesapeake Bay: How The Preservation Of Submerged Aquatic Vegetation Can Improve The Blue Crab Population, Christina Bell
Spring Showcase for Research and Creative Inquiry
A research proposal poster that describes the possible relationship between juvenile Blue Crab survival and submerged aquatic vegetation density.
Examining Derelict Pot Impacts On Harvest In A Commercial Blue Crab Callinectes Sapidus Fishery, James A. Delbene, Donna M. Bilkovic, Andrew M. Scheld
Examining Derelict Pot Impacts On Harvest In A Commercial Blue Crab Callinectes Sapidus Fishery, James A. Delbene, Donna M. Bilkovic, Andrew M. Scheld
VIMS Articles
Pot fisheries occur worldwide with a significant proportion of the gear becoming derelict. Derelict pots induce detrimental ecological and economic impacts, and more recently were found to reduce blue crab harvests in the Chesapeake Bay commercial fishery. We simulated the presence of derelict pots near actively fished pots in seasonal field experiments to quantify the effect derelict pots have on blue crab harvest. Derelict pots reduced harvests by 30% during the summer, but not during the fall. Female blue crab capture rates were consistently lower when derelict pots were present; while capture rates of the less abundant males were not …
Herbivory Regulates The Establishment Of A Native Species Of Submerged Aquatic Vegetation (Sav) In A Tidal Estuary Of The Usa, A. J. Johnson, R. J. Orth, Ken Moore
Herbivory Regulates The Establishment Of A Native Species Of Submerged Aquatic Vegetation (Sav) In A Tidal Estuary Of The Usa, A. J. Johnson, R. J. Orth, Ken Moore
VIMS Articles
Herbivores are a diverse group of fauna that shape the distribution and composition of plant communities. In some cases, herbivory may prevent the re-establishment of submerged aquatic vegetation (SAV), such as Vallisneria americana, into systems. The goal of this study was to investigate the role and nature of herbivory on V. americana transplants with camera and transect surveys of grazing intensity and with field and laboratory grazing experiments using a suspected herbivore, the blue crab, Callinectes sapidus. Camera surveys recorded C. sapidus clipping and consuming shoots of V. americana for the first time. Grazing intensity surveys in low-salinity …
Physiological Changes As A Measure Of Crustacean Welfare Under Different Standardized Stunning Techniques: Cooling And Electroshock, Kristin Weineck, Andrew J. Ray, Leo J. Fleckenstein, Meagan Medley, Nicole Dzubuk, Elena Piana, Robin L. Cooper
Physiological Changes As A Measure Of Crustacean Welfare Under Different Standardized Stunning Techniques: Cooling And Electroshock, Kristin Weineck, Andrew J. Ray, Leo J. Fleckenstein, Meagan Medley, Nicole Dzubuk, Elena Piana, Robin L. Cooper
Biology Faculty Publications
Stunning of edible crustaceans to reduce sensory perception prior and during slaughter is an important topic in animal welfare. The purpose of this project was to determine how neural circuits were affected during stunning by examining the physiological function of neural circuits. The central nervous system circuit to a cardiac or skeletal muscle response was examined. Three commercially important crustacean species were utilized for stunning by immersion in an ice slurry below 4 °C and by electrocution; both practices are used in the seafood industry. The blue crab (Callinectes sapidus), the red swamp crayfish (Procambarus clarkii), …
Calcium Signaling And Regulation Of Ecdysteroid Molting Hormone Production In Y-Organs Of The Blue Crab (Callinectes Sapidus), Megan Elizabeth Roegner
Calcium Signaling And Regulation Of Ecdysteroid Molting Hormone Production In Y-Organs Of The Blue Crab (Callinectes Sapidus), Megan Elizabeth Roegner
All ETDs from UAB
In the blue crab (Callinectes sapidus), molting, and subsequent incremental growth, is triggered by the release of molting hormones, or ecdysteroids, from paired endocrine glands termed Y-organs. The method that triggers the increase in ecdysteroid release before molting is not fully resolved, but previous evidence suggests a calcium (Ca2+) signal may be involved. The goal of this research is to better understand the role Ca2+ signaling plays in blue crab molt hormone production. The first part of my dissertation focused on the Ca2+ regulatory protein sarco/endoplasmic reticulum Ca2+ ATPase (SERCA), which removes Ca2+ to the ER after a Ca2+ influx. …
Multiple Mating By Females In The Chesapeake Bay Blue Crab Callinectes Sapidus Population, S. Wells, J. Mcconaugha, L. Horth
Multiple Mating By Females In The Chesapeake Bay Blue Crab Callinectes Sapidus Population, S. Wells, J. Mcconaugha, L. Horth
OES Faculty Publications
Mature females of the Chesapeake Bay (USA) blue crab Callinectes sapidus population mate multiple times. Microsatellite DNA analysis of sperm stored in the spermathecae has shown that virtually all (~97%, 104 out of 107) females collected in a 2009−2010 study mated with at least 2 males. Enumeration of stored sperm revealed that despite multiple mating, some females did not have enough sperm to fulfill their lifetime reproductive potential, suggesting that female blue crabs may experience varying levels of sperm limitation. This could result from multiple factors. The average body size of males in the population has decreased, which reduces the …
First Record Of The Atlantic Blue Crab Callinectes Sapidus (Crustacea: Brachyura: Portunidae) In The Segura River Mouth (Spain, Southwestern Mediterranean Sea), Mercedes Gonzalez-Wanguemert, Juan Antonio Pujol
First Record Of The Atlantic Blue Crab Callinectes Sapidus (Crustacea: Brachyura: Portunidae) In The Segura River Mouth (Spain, Southwestern Mediterranean Sea), Mercedes Gonzalez-Wanguemert, Juan Antonio Pujol
Turkish Journal of Zoology
A single male individual of Callinectes sapidus (Crustacea, Decapoda, Portunidae) was collected on 6 December 2014 in the Segura River mouth in southeastern Spain. Information on collection site, DNA barcoding, and its present distribution and dispersal strategies are provided.
Problems Associated With A Lipofuscin Extraction Method Used To Age Blue Crabs Callinectes Sapidus Cultured In Florida, Usa, Claire E. Crowley, Ryan L. Gandy, Kendra L. Daly, Edward S. Van Vleet
Problems Associated With A Lipofuscin Extraction Method Used To Age Blue Crabs Callinectes Sapidus Cultured In Florida, Usa, Claire E. Crowley, Ryan L. Gandy, Kendra L. Daly, Edward S. Van Vleet
Marine Science Faculty Publications
The blue crab Callinectes sapidus is an ecologically and economically important component of marine and estuarine ecosystems of the western Atlantic and Gulf of Mexico. Current stock assessments lack a clear understanding of the age structure of blue crab populations in Florida (USA). Blue crabs and other crustaceans are especially difficult to age because of the complex nature of their discrete, rather than continuous, growth patterns. Chesapeake Bay researchers developed a method of aging blue crabs by assaying the aging pigment lipofuscin extracted from eyestalk nerve tissue. Here we investigated the usefulness of that method in determining the age of …
Livelihood Strategies And Lifestyle Choices Of Fishers Along The Mississippi Gulf Coast, Sarah A. Harrison
Livelihood Strategies And Lifestyle Choices Of Fishers Along The Mississippi Gulf Coast, Sarah A. Harrison
Theses and Dissertations
This study was initiated to assess the biological, ecological and sociological aspects of the blue crab, Callinectes sapidus, fishery associated with the Pascagoula River Estuary in southern Mississippi. Household surveys were conducted in the cities of Moss Point and Pascagoula, Mississippi, September 2010 to September 2011, to identify, describe and classify subsistence fishing activities associated with the estuary. A stock assessment of blue crab was conducted to determine how biological and environmental variability affect the people engaged in this subsistence fishery. The study revealed two types of subsistence fishing occurring in the Moss Point/Pascagoula area. The first type involves fishing …
Development Of An Alternative Bait For The Louisiana Commercial Blue Crab (Callinectes Sapidus) Fishery, Angelle Nicole Anderson
Development Of An Alternative Bait For The Louisiana Commercial Blue Crab (Callinectes Sapidus) Fishery, Angelle Nicole Anderson
LSU Master's Theses
The blue crab (Callinectes sapidus) is a commercially, recreationally, and ecologically important species in Louisiana coastal waters. Louisiana landings account for more than 80% of Gulf of Mexico hard crab landings. In 2012, over 24 thousand metric tons of blue crab were landed in Louisiana with an economic value over $52 million. The blue crab fishery in the northern Gulf of Mexico relies heavily on Atlantic menhaden (Brevoortia tyrannus) for bait, which is a species with stock concerns resulting in approximately a 20% decrease in total allowable catch beginning in 2013. Decreased landings results in increased cost of B. tyrannus …
The Effects Of Drought On The Abundance Of The Blue Crab, Callinectes Sapidus, In The Ace Basin Nerr In South Carolina, Kirk Parmenter
The Effects Of Drought On The Abundance Of The Blue Crab, Callinectes Sapidus, In The Ace Basin Nerr In South Carolina, Kirk Parmenter
All Dissertations
Blue crabs make up one of the most important commercial fisheries in the U.S. but there has been some concern over the health of blue crab populations due to large declines in landings seen in recent years. There is a significant positive correlation between river discharge and commercial landings suggesting that drought may be to blame for the recent decline in crab numbers. The work I completed for my dissertation tested multiple hypotheses examining the link between decreasing freshwater discharge, the subsequent rise in salinity, and the abundance of blue crabs in the ACE Basin National Estuarine Research Reserve.
To …
Effects Of The Parasitic Dinoflagellate Hematodinium Sp. On Blue Crab (Callinectes Sapidus) Activity Predation And Habitat Selection, John M. Tiggelaar Ii
Effects Of The Parasitic Dinoflagellate Hematodinium Sp. On Blue Crab (Callinectes Sapidus) Activity Predation And Habitat Selection, John M. Tiggelaar Ii
Biological Sciences Theses & Dissertations
The blue crab Callinectes sapidus occurs along the Atlantic and Gulf coasts of the United States, and in high salinity regions, they are subject to lethal infection by the parasitic dinoflagellate Hematodinium. In Virginia's seaside estuaries, the prevalence of Hematodinium infection of C. sapidus can sometimes exceed 50%, threatening the commercial fishery for this species. Indeed, other commercially important crustacean fisheries have approached collapse due to Hematodinium infections. Most studies of this host-parasite interaction have focused on epidemiology, host-pathogen dynamics, and pathogen transmission, and little is known about the impact of the parasite on host behavior and population dynamics. …
Changing Fecundity And Reproductive Output In Females Of A Chesapeake Bay Population Of Blue Crab, Callinectes Sapidus, Shannon L. Wells
Changing Fecundity And Reproductive Output In Females Of A Chesapeake Bay Population Of Blue Crab, Callinectes Sapidus, Shannon L. Wells
OES Theses and Dissertations
The Chesapeake Bay blue crab, Callinectes sapidus, is an important species both ecologically and as a fishery. Fishery dependent and independent data indicate that the population declined abruptly in the mid-1990s and has remained low. Previous work prior to the decline in population abundance found a significant relationship between size and fecundity for mature females. As with many heavily fished populations, this population has experienced a reduction in the size at maturity. The objectives of this study were to reassess the fecundity of the population, determine the lipid and protein energy allocated for reproduction, and to examine the concentrations …
Enhanced Blue Crab Predation On Rangia Clams After Exposure To Hypoxia, Ann C. Howard
Enhanced Blue Crab Predation On Rangia Clams After Exposure To Hypoxia, Ann C. Howard
University of New Orleans Theses and Dissertations
Hypoxia or dissolved oxygen concentrations < 2 mg/L is a problem in estuaries worldwide. In Lake Pontchartrain, a 250 km2 de-faunated zone exists as a result of salinity stratification and episodic hypoxia. Mature common rangia clams (Rangia cuneata) are not found within this zone. Blue crabs (Callinectes sapidus) are important estuarine predators and may move in and out of the hypoxic zone to feed on hypoxia-stressed rangia clams. To test the effects of hypoxia on predation, rangia clams were exposed experimentally to severe hypoxic conditions (< 0.75 mg/l) for 72-hours and then presented to blue crabs. One hypoxic and one normoxic clam were added to each aquarium containing a blue crab for each trial, and crab feeding choices were observed and recorded. I found prey choice varied among crabs, but in general, the experimental data demonstrates that crabs chose to feed on hypoxia-stressed clams over clams kept under normoxic conditions.
Oceanic-Atmospheric Modes Of Variability And Their Effect On River Flow And Blue Crab (Callinectes Sapidus) Abundance In The Northcentral Gulf Of Mexico, Guillermo Humberto Sanchez-Rubio
Oceanic-Atmospheric Modes Of Variability And Their Effect On River Flow And Blue Crab (Callinectes Sapidus) Abundance In The Northcentral Gulf Of Mexico, Guillermo Humberto Sanchez-Rubio
Dissertations
Oceanic-atmospheric modes of variability occur on interdecadal, multidecadal, decadal, and interannual timescales and their influence on climate around the world has been confirmed. The present study investigates Mississippi River and Pascagoula River flows in response to the influence of one or more of the four oceanic-atmospheric modes of variability: the Pacific Decadal Oscillation (PDO), the Atlantic Multidecadal Oscillation (AMO), the North Atlantic Oscillation (NAO), and the El Nino Southern Oscillation (ENSO). These modes of variability are present in phases: PDO warm (PDOw) and cold (PDOc), AMO warm (AMOw) and cold (AMOc), NAO positive (NAOp) and negative (NAOn), and ENSO warm …
Morphological Characteristics Of Early Life History Stages Of The Blue Crab, Callinectes Sapidus Rathbun, From The Northern Gulf Of Mexico With A Comparison Of Studies From The Atlantic Seaboard, Kenneth Stuck, Harriet Perry, Darcie Graham, Richard W. Heard
Morphological Characteristics Of Early Life History Stages Of The Blue Crab, Callinectes Sapidus Rathbun, From The Northern Gulf Of Mexico With A Comparison Of Studies From The Atlantic Seaboard, Kenneth Stuck, Harriet Perry, Darcie Graham, Richard W. Heard
Gulf and Caribbean Research
Zoeae, megalopae, and early crab stages of Callinectes sapidus Rathbun, 1896 were described from the northern Gulf of Mexico (nGOM). Observations during this study were based on larvae reared in the laboratory through the early crab stages and on megalopae and early crab stages collected in the wild. Gulf of Mexico data are compared with similar information for the southeast Atlantic coast of the United States. Size and setation of C. sapidus larvae reared from nGOM stocks were different than those in published descriptions of larvae reared from Atlantic populations. Seasonal differences in size were noted in both reared and …
The Tragedy Of The Commons: The Case Of The Blue Crab, Carl W. Tobias
The Tragedy Of The Commons: The Case Of The Blue Crab, Carl W. Tobias
Law Faculty Publications
The blue crab has achieved iconic status throughout the Chesapeake Bay area, while the pugnacious crustacean and the majestic estuary are national treasures. The shallow waters provide optimal habitat for the species that has been deeply woven into the bay's economic and cultural fabric. Last year, after a respected committee ascertained that the crab was in jeopardy, anticipated future deterioration, and proffered extreme recommendations, Virginia and Maryland imposed draconian strictures which could reduce harvests by one third and help ameliorate the creature's depletion. A recent Executive Order, ambitiously designed by President Barack Obama to safeguard and restore the Chesapeake, illuminates …
Yellow Head Virus: Transmission And Genome Analyses, Hongwei Ma
Yellow Head Virus: Transmission And Genome Analyses, Hongwei Ma
Dissertations
Yellow head virus (YHV) is an important pathogen to shrimp aquaculture. Among 13 species of naturally YHV-negative crustaceans in the Mississippi coastal area, the daggerblade grass shrimp, Palaemonetes pugio, and the blue crab, Callinectes sapidus, were tested for potential reservoir and carrier hosts of YHV using PCR and real time PCR. The YHV replicated in the daggerblade grass shrimp, and was still detectable on 36 d post-inoculation, causing 8% mortality after injection. However, YHV did not replicate in the blue crab. These data suggest that the daggerblade grass shrimp could act as a reservoir host for YHV. Storage conditions of …