Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Fisheries Science Peer-Reviewed Articles (8)
- Biological Sciences Peer-Reviewed Articles (6)
- Acanthuridae; Larval dispersal; Larval retention; Marine connectivity; Phylogeography; Stock assessment (1)
- Aquatic Health Sciences Peer-Reviewed Articles (1)
- Argos; Logistic regression; Risk; Cox proportional hazards; Meta-analysis; Odds ratio; Kaplan-Meier; Survival analysis; PSAT (1)
-
- Channel Whelk; Busycotypus Canaliculatus; Busycon; Melongenidae; Age-At-Length; Growth Rate; Conch (1)
- Chesapeake Bay; Management; Maryland; Monitoring; Oyster Fishery Restoration; Virginia; Crassostrea Virginica (1)
- Durophagy; Cownose Ray; Prey Selection; Predation Risk; Rhinoptera; Bivalve Mollusc (1)
- ESL Publications (1)
- Glacial fjord; Greenland; Climate change; Copepod; Grazing; Predation; Food web (1)
- Haplosporidium nelsoni; Multinucleated sphere X disease; MSX; Crassostrea virginica; Disease resistance; Oyster restoration (1)
- LEATHERBACK TURTLE; SEA-TURTLES; POPULATION; MANAGEMENT; PACIFIC; RECOVERY (1)
- Loggerhead turtle (1)
- PELAGIC LONGLINE GEAR; MARLIN MAKAIRA-NIGRICANS; WESTERN NORTH-ATLANTIC; BLUE MARLIN; ISTIOPHORUS-PLATYPTERUS; POSTRELEASE SURVIVAL; TETRAPTURUS-AUDAX; SATELLITE TAGS; DEPTH; TELEMETRY (1)
- Physical Sciences Peer-Reviewed Articles (1)
- Predation (Biology) (1)
- SATELLITE CHLOROPHYLL; SKILL ASSESSMENT; PACIFIC-OCEAN; NORTH PACIFIC; PHOTOSYNTHESIS; TEMPERATURE; VARIABILITY; SIMULATION; RATES; SEA (1)
- Sea turtles -- Migration (1)
- Shellfish (1)
- Suminoe Oyster; Crassostrea Ariakensis; Microsatellites; Hatchery Stocks; Genetic Diversity; Genetic Bottleneck (1)
Articles 1 - 17 of 17
Full-Text Articles in Life Sciences
Sailfish Habitat Utilization And Vertical Movements In The Southern Gulf Of Mexico And Florida Straits, David W. Kerstetter, Shannon M. Bayse, Jenny L. Fenton, John Graves
Sailfish Habitat Utilization And Vertical Movements In The Southern Gulf Of Mexico And Florida Straits, David W. Kerstetter, Shannon M. Bayse, Jenny L. Fenton, John Graves
VIMS Articles
Pop-up satellite archival tags (PSATs) were deployed on 19 sailfish Istiophorus platypterus captured in the southern Gulf of Mexico and Florida Straits between 2005 and 2007 on commercial pelagic longline gear (n = 18) and recreational rod-and-reel gear (n = 1). The data from three tags indicated mortality events and were excluded from subsequent analyses. All PSATs were programmed to collect pressure (depth), temperature, and light-level data for 10 d at approximately 90-s intervals. These transmitted point data subsequently allowed the reconstruction of vertical movement patterns. The remaining 16 PSAT data sets indicate that sailfish are primarily associated with the …
Metazooplankton Community Structure, Feeding Rate Estimates, And Hydrography In A Meltwater-Influenced Greenlandic Fjord, Kam W. Tang, Torkel Gissel Nielsen, Peter Munk, John Mortensen
Metazooplankton Community Structure, Feeding Rate Estimates, And Hydrography In A Meltwater-Influenced Greenlandic Fjord, Kam W. Tang, Torkel Gissel Nielsen, Peter Munk, John Mortensen
VIMS Articles
In order to assess the potential responses of Greenland's coastal ecosystems to future climate change, we studied the hydrography and distribution of metazooplankton, along a transect from the slope waters beyond Fyllas Banke to the inner part of Godthabsfjord, West Greenland, in July and August 2008, and estimated feeding rates for some of the larger species groups. Within the 4 regional domains that were covered in the study (continental slope, continental shelf, outer sill region, and main fjord basin), salty coastal water and glacial runoff mixed to various extents, and 7 water masses with specific characteristics were identified. The common …
Vertical Structure, Seasonal Drawdown, And Net Community Production In The Ross Sea, Antarctica, Matthew C. Long, Robert B. Dunbar, Philippe D. Tortell, Walker O. Smith Jr., David A. Mucciarone, Giacomo R. Ditullio
Vertical Structure, Seasonal Drawdown, And Net Community Production In The Ross Sea, Antarctica, Matthew C. Long, Robert B. Dunbar, Philippe D. Tortell, Walker O. Smith Jr., David A. Mucciarone, Giacomo R. Ditullio
VIMS Articles
We calculate net community production (NCP) during summer 2005-2006 and spring 2006 in the Ross Sea using multiple approaches to determine the magnitude and consistency of rates. Water column carbon and nutrient inventories and surface ocean O-2/Ar data are compared to satellite-derived primary productivity (PP) estimates and C-14 uptake experiments. In spring, NCP was related to stratification proximal to upper ocean fronts. In summer, the most intense C drawdown was in shallow mixed layers affected by ice melt; depth-integrated C drawdown, however, increased with mixing depth. Delta O-2/Ar-based methods, relying on gas exchange reconstructions, underestimate NCP due to seasonal variations …
Early Season Depletion Of Dissolved Iron In The Ross Sea Polynya: Implications For Iron Dynamics On The Antarctic Continental Shelf, P. N. Sedwick, Walker O. Smith Jr.
Early Season Depletion Of Dissolved Iron In The Ross Sea Polynya: Implications For Iron Dynamics On The Antarctic Continental Shelf, P. N. Sedwick, Walker O. Smith Jr.
VIMS Articles
The Ross Sea polynya is among the most productive regions in the Southern Ocean and may constitute a significant oceanic CO2 sink. Based on results from several field studies, this region has been considered seasonally iron limited, whereby a "winter reserve" of dissolved iron (dFe) is progressively depleted during the growing season to low concentrations (similar to 0.1 nM) that limit phytoplankton growth in the austral summer (December-February). Here we report new iron data for the Ross Sea polynya during austral summer 2005-2006 (27 December-22 January) and the following austral spring 2006 (16 November-3 December). The summer 2005-2006 data show …
An Evaluation Of Ocean Color Model Estimates Of Marine Primary Productivity In Coastal And Pelagic Regions Across The Globe, V. S. Saba, Marjorie A.M. Friedrichs, Walker O. Smith Jr.
An Evaluation Of Ocean Color Model Estimates Of Marine Primary Productivity In Coastal And Pelagic Regions Across The Globe, V. S. Saba, Marjorie A.M. Friedrichs, Walker O. Smith Jr.
VIMS Articles
Nearly half of the earth's photosynthetically fixed carbon derives from the oceans. To determine global and region specific rates, we rely on models that estimate marine net primary productivity (NPP) thus it is essential that these models are evaluated to determine their accuracy. Here we assessed the skill of 21 ocean color models by comparing their estimates of depth-integrated NPP to 1156 in situ C-14 measurements encompassing ten marine regions including the Sargasso Sea, pelagic North Atlantic, coastal Northeast Atlantic, Black Sea, Mediterranean Sea, Arabian Sea, subtropical North Pacific, Ross Sea, West Antarctic Peninsula, and the Antarctic Polar Frontal Zone. …
Multi-Locus Phylogeny Of Sponge-Dwelling Snapping Shrimp (Caridea: Alpheidae: Synalpheus) Supports Morphology-Based Species Concepts, Km Hultgren, Je Duffy
Multi-Locus Phylogeny Of Sponge-Dwelling Snapping Shrimp (Caridea: Alpheidae: Synalpheus) Supports Morphology-Based Species Concepts, Km Hultgren, Je Duffy
VIMS Articles
Alpheid snapping shrimp are one of the most diverse groups of coral-reef fauna, and sponge-dwelling shrimp in the genus Synalpheus (gambarelloides species group) have in particular become a model system for studying the evolution of social biology and host use in marine invertebrates. Despite recent advances in understanding the evolution and systematics of Synalpheus, the taxonomy and phylogenetic relationships within this group remain challenging. More than 20 new species in the S. gambarelloides species group have been described over the past two decades, primarily within several cryptic species complexes, which has doubled the known diversity of this group …
Sea Turtles As Potential Dispersal Vectors For Non-Indigenous Species: The Veined Rapa Whelk As An Epibiont Of Loggerhead Sea Turtles, Jm Harding, Wj Walton, Cm Trapani, Mj Frick, Roger L. Mann
Sea Turtles As Potential Dispersal Vectors For Non-Indigenous Species: The Veined Rapa Whelk As An Epibiont Of Loggerhead Sea Turtles, Jm Harding, Wj Walton, Cm Trapani, Mj Frick, Roger L. Mann
VIMS Articles
We present the first record of Rapana venosa (Veined Rapa Whelk) as an epibiont of Caretta caretta (Loggerhead Sea Turtle) and the first observation of rapa whelks in the South Atlantic Bight, USA. Veined Rapa Whelks are invasive shellfish predators. The only known North American population of Veined Rapa Whelks is in the southern Chesapeake Bay. Collections of Veined Rapa Whelks as epibionts on Loggerhead Sea Turtles from Norfolk, VA and Wassaw Island, GA present a previously undescribed vector for whelk range expansion to widely separated coastal habitats. In October 2008, a live juvenile Loggerhead stranded near Norfolk, VA with …
Tidal Modulation On The Changjiang River Plume In Summer, Hui Wu, Jianrong Zhu, Jian Shen, Harry V. Wang
Tidal Modulation On The Changjiang River Plume In Summer, Hui Wu, Jianrong Zhu, Jian Shen, Harry V. Wang
VIMS Articles
Tide effects on the structure of the near-field Changjiang River plume and on the extension of the far-field plume have often been neglected in analysis and numerical simulations, which is the focus of this study. Numerical experiments highlighted the crucial role of the tidal forcing in modulating the Changjiang River plume. Without the tidal forcing, the plume results in an unrealistic upstream extension along the Jiangsu coast. With the tidal forcing, the vertical mixing increases, resulting in a strong horizontal salinity gradient at the northern side of the Changjiang River mouth along the Jiangsu coast, which acts as a dynamic …
Lessons Learned From Efforts To Restore Oyster Populations In Maryland And Virginia, 1990 To 2007, Vs Kennedy, Dl Breitburg, Mc Christman, Mark Luckenbach, Kennedy Paynter, J Kramer, Kevin Sellner, J Dew-Baxter, C Keller, Roger L. Mann
Lessons Learned From Efforts To Restore Oyster Populations In Maryland And Virginia, 1990 To 2007, Vs Kennedy, Dl Breitburg, Mc Christman, Mark Luckenbach, Kennedy Paynter, J Kramer, Kevin Sellner, J Dew-Baxter, C Keller, Roger L. Mann
VIMS Articles
A century-long decline of the fishery for the Eastern oyster Crassostrea virginica (Gmelin, 1791) in Maryland and Virginia stimulated numerous efforts by federal, state, and nongovernmental agencies to restore oyster populations, with limited success. To learn from recent efforts, we analyzed records of restoration and monitoring activities undertaken between 1990 and 2007 by 12 such agencies. Of the 1,037 oyster bars (reefs, beds, or grounds) for which we obtained data, 43% experienced both restoration and monitoring, with the remaining experiencing either restoration or monitoring only. Restoration activities involved adding substrate (shell), transplanting hatchery or wild seed (juvenile oysters), bar cleaning, …
Genetic Diversity In U.S. Hatchery Stocks Of Crassostrea Ariakensis (Fujita, 1913) And Comparison With Natural Populations In Asia, Jie Xiao, Jan F. Cordes, Ja Moss, Kimberly S. Reece
Genetic Diversity In U.S. Hatchery Stocks Of Crassostrea Ariakensis (Fujita, 1913) And Comparison With Natural Populations In Asia, Jie Xiao, Jan F. Cordes, Ja Moss, Kimberly S. Reece
VIMS Articles
Although several different U.S. hatchery stocks of the Asian Suminoe oyster Crassosirea ariakensis were used in laboratory and field trials assessing performance, and in comparative studies with the native oyster Crassostrea virginica, the genetic composition of these hatchery stocks has not yet been examined comprehensively. Using eight microsatellite markers we investigated the genetic variability among five hatchery stocks and compared the genetic makeup of these stocks with 8 wild populations from Asia. Results showed significant genetic differentiation among the 5 hatchery stocks that was 6-fold larger than that observed among wild populations. A significant reduction in genetic diversity was observed …
Observations On The Early Life History And Growth Rates Of Juvenile Channel Whelks Busycotypus Canaliculatus (Linnaeus, 1758), Juliana Harding
Observations On The Early Life History And Growth Rates Of Juvenile Channel Whelks Busycotypus Canaliculatus (Linnaeus, 1758), Juliana Harding
VIMS Articles
Channel whelks (Busycotypus canaliculatus) were cultured from hatch through 171 days to describe the early life history and growth rates of juveniles. Whelks began to hatch at water temperatures of 15-18 degrees C. Channel whelks grew quickly from average shell lengths (SL) at hatch of 3.8 mm (SE = 0.1) to an average of 48.4 mm SL (SE = 1.3, n = 42 individuals) at 171 days post-hatch. The largest individual reached 53.2 mm SL, a gain of similar to 49.4 mm SL in 171 days, with a growth rate of 0.29 mm/day. Juvenile whelks readily consumed oyster (Crassostrea virginica) …
Cownose Ray (Rhinoptera Bonasus) Predation Relative To Bivalve Ontogeny, Robert A. Fisher, Garrett C. Call, Rochelle Grubbs
Cownose Ray (Rhinoptera Bonasus) Predation Relative To Bivalve Ontogeny, Robert A. Fisher, Garrett C. Call, Rochelle Grubbs
VIMS Articles
The purpose of this study was to determine the ability of the cownose ray, Rhinoptera bonasus (Mitchill, 1815), to manipulate oysters and clams, to test for relative prey preference, and to investigate whether susceptibility to cownose ray predation changes with bivalve ontogeny. We investigated patterns of predation for captive adult and young-of-year cownose rays on 4 species of bivalves, including Crassostrea virginica (Gmelin, 1791), Crassostrea ariakensis (Fujita, 1913), Mercenaria mercenaria (Linnaeus, 1758), and Mya arenaria Linnaeus, 1758. In oyster (C. virginica) trials, predation probabilities by adult rays were highest at shell heights of 30-70 mm and shell depths of 8-22 …
Global Conservation Priorities For Marine Turtles, Bryan P. Wallace, John A. Musick
Global Conservation Priorities For Marine Turtles, Bryan P. Wallace, John A. Musick
VIMS Articles
Where conservation resources are limited and conservation targets are diverse, robust yet flexible priority-setting frameworks are vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial and temporal scales. Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as reproduction and morphology. However, current global extinction risk assessment frameworks do not assess conservation status of spatially and biologically distinct marine turtle Regional Management Units (RMUs), and thus do not capture variations in population trends, impacts of threats, or necessary conservation actions across …
Performance Of Pop-Up Satellite Archival Tags, M. K. Musyl, M. L. Domeier, N. Nasby-Lucas, Richard Brill
Performance Of Pop-Up Satellite Archival Tags, M. K. Musyl, M. L. Domeier, N. Nasby-Lucas, Richard Brill
VIMS Articles
Pop-up satellite archival tags (PSATs) are used to chronicle or 'archive' the habitat preferences, horizontal and vertical movements, fishery interaction, and post-release mortality rates of a variety of pelagic animals. Though PSATs are valuable research tools, lower-than-expected reporting rates, early detachment, and incomplete data return remain problematic. These issues were quantified by analysis of reporting rates, retention times (i.e. the time period PSATs remained attached), and the quantity of depth, temperature, and geolocation data returned from 731 PSAT deployments on 19 species in the authors' database and 1433 PSAT deployments on 24 species taken from 53 published articles. The reporting …
Escaping Paradise: Larval Export From Hawaii In An Indo-Pacific Reef Fish, The Yellow Tang Zebrasoma Flavescens, Jeff A. Eble, Robert J. Toonen, Laurie Sorenson, Larry V. Basch
Escaping Paradise: Larval Export From Hawaii In An Indo-Pacific Reef Fish, The Yellow Tang Zebrasoma Flavescens, Jeff A. Eble, Robert J. Toonen, Laurie Sorenson, Larry V. Basch
VIMS Articles
The depauperate marine ecosystems of the Hawaiian Archipelago share a high proportion of species with the southern and western Pacific, indicating historical and/or ongoing connections across the large oceanic expanse separating Hawaii from its nearest neighbors. The rate and direction of these interactions are, however, unknown. While previous biogeographic studies have consistently described Hawaii as a diversity sink, prevailing currents likely offer opportunities for larval export. To assess interactions between the remote reefs of the Hawaiian Archipelago and the species-rich communities of the Central and West Pacific, we surveyed 14 nuclear microsatellite loci (nDNA, n = 857) and a 614 …
Declining Impact Of An Introduced Pathogen: Haplosporidium Nelsoni In The Oyster Crassostrea Virginica In Chesapeake Bay, Ryan B. Carnegie, Eugene M. Burreson
Declining Impact Of An Introduced Pathogen: Haplosporidium Nelsoni In The Oyster Crassostrea Virginica In Chesapeake Bay, Ryan B. Carnegie, Eugene M. Burreson
VIMS Articles
Disease caused by the parasite Haplosporidium nelsoni has devastated Crassostrea virginica in Chesapeake Bay, exacerbating effects of overharvesting and adversely impacting the ecology of the bay. H. nelsoni is thought to persist as an impediment to oyster restoration because strong reproductive contributions from oysters in low-salinity refugia from parasitism have prevented development of disease resistance. On the contrary, long-term data indicate that while infection pressure on naive sentinels has grown, H. nelsoni levels in wild oysters have fallen, with prevalence typically below 20% and advanced infections uncommon. A transplant experiment comparing naive sentinels with oysters from disease-enzootic populations indicated that …
Antarctic Sea Ice Carbon Dioxide System And Controls, Virginia Institute Of Marine Science, Agneta Fransson, Melissa Chierici, Patricia L. Yager, Walker O. Smith Jr.
Antarctic Sea Ice Carbon Dioxide System And Controls, Virginia Institute Of Marine Science, Agneta Fransson, Melissa Chierici, Patricia L. Yager, Walker O. Smith Jr.
VIMS Articles
In austral summer, from December 2008 to January 2009, we investigated the sea-ice carbon dioxide (CO(2)) system and CO(2) controls in the Amundsen and Ross Seas, Antarctica. We sampled seawater, brine and sea ice for the measurements of total alkalinity (A(T)), total inorganic carbon (DIC), pH, inorganic nutrients, particulate organic carbon (POC) and nitrogen (PON), chlorophyll a, pigments, salinity and temperature. Large variability in all measured parameters was observed in time and space due to the complex sea-ice dynamics. We discuss the controls of the sea-ice CO(2) system, such as brine rejection, biological processes, calcium carbonate (CaCO(3)) precipitation/dissolution and CO(2) …