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Full-Text Articles in Life Sciences
Overcoming Restoration Paradigms: Value Of The Historical Record And Metapopulation Dynamics In Native Oyster Restoration, Rom Lipcius, Russell P. Burke, Danielle N. Mcculloch, Sebastian J. Schreiber, David M. Schulte, Rochelle D. Seitz, Jian Shen
Overcoming Restoration Paradigms: Value Of The Historical Record And Metapopulation Dynamics In Native Oyster Restoration, Rom Lipcius, Russell P. Burke, Danielle N. Mcculloch, Sebastian J. Schreiber, David M. Schulte, Rochelle D. Seitz, Jian Shen
VIMS Articles
Restoration strategies for native oyster populations rely on multiple sources of information, which often conflict due to time- and space-varying patterns in abundance and distribution. For instance, strategies based on population connectivity and disease resistance can differ, and extant and historical records of abundance and distribution are often at odds, such that the optimal strategy is unclear and valuable restoration sites may be excluded from consideration. This was the case for the Lynnhaven River subestuary of lower Chesapeake Bay, which was deemed unsuitable for Eastern Oyster (Crassostrea virginica) restoration based on physical conditions, disease challenge, and extant oyster …
Abstracts Of Shellfish Technical Papers, Presented At The Joint Meeting Of The Northeast Aquaculture Conference And Exposition And The 35th Milford Aquaculture Seminar, Portland, Maine, January 14–16, 2015, National Shellfisheries Association
Abstracts Of Shellfish Technical Papers, Presented At The Joint Meeting Of The Northeast Aquaculture Conference And Exposition And The 35th Milford Aquaculture Seminar, Portland, Maine, January 14–16, 2015, National Shellfisheries Association
VIMS Articles
No abstract provided.
Abstracts Of Technical Papers, Presented At The 107th Annual Meeting, National Shellfisheries Association, Monterey, California, March 22–26, 2015, National Shellfisheries Association
Abstracts Of Technical Papers, Presented At The 107th Annual Meeting, National Shellfisheries Association, Monterey, California, March 22–26, 2015, National Shellfisheries Association
VIMS Articles
No abstract provided.
Lethal And Sublethal Effects Of Sediment Burial On The Eastern Oyster Crassostrea Virginica, Allison M. Colden, Rom Lipcius
Lethal And Sublethal Effects Of Sediment Burial On The Eastern Oyster Crassostrea Virginica, Allison M. Colden, Rom Lipcius
VIMS Articles
Eastern oysters Crassostrea virginica are dominant ecosystem engineers that construct complex reefs in estuarine systems. Reef persistence relies on reef growth, which must outpace reef degradation and sediment deposition. The quantitative impact of burial on oyster survival and sublethal effects of sediment deposition are undefined. In this mesocosm study, we quantified effects of partial and complete burial (0, 50, 70, 90, and 110% of oyster shell height) on survival, biodeposition, condition index and growth of oysters (shell height = 25−75 mm). Survival only declined significantly when 90% or more of an oyster was buried; the critical burial depth inducing 50% …
The Value Of Captains’ Behavioral Choices In The Success Of The Surfclam (Spisula Solidissima) Fishery On The U.S. Mid-Atlantic Coast: A Model Evaluation, Eric N. Powell, John M. Klinck, Daphne M. Munroe, Eileen E. Hoffmann, Paula Moreno, Roger L. Mann
The Value Of Captains’ Behavioral Choices In The Success Of The Surfclam (Spisula Solidissima) Fishery On The U.S. Mid-Atlantic Coast: A Model Evaluation, Eric N. Powell, John M. Klinck, Daphne M. Munroe, Eileen E. Hoffmann, Paula Moreno, Roger L. Mann
VIMS Articles
The response of the surfclam Spisula solidissima to warming of the Mid-Atlantic Bight is manifested by recession of the southern and inshore boundary of the clam’s range. This phenomenon has impacted the fishery through the closure of southern ports and the movement of processing capacity north, impacts that may require responsive actions on the part of fishery captains to mitigate a decline in fishery performance otherwise ineluctably accompanying this shift in range. The purpose of this study was to evaluate options in the behavioral repertoire of captains that might provide mitigation. A model capable of simulating a spatially and temporally …
Simulating Bottom-Up Effects On Predator Productivity And Consequences For The Rebuilding Timeline Of A Depleted Population, A Buchheister, Mj Wilberg, Tj Miller, Rj Latour
Simulating Bottom-Up Effects On Predator Productivity And Consequences For The Rebuilding Timeline Of A Depleted Population, A Buchheister, Mj Wilberg, Tj Miller, Rj Latour
VIMS Articles
Bottom-up control within ecosystems is characterized, in part, by predator populations exhibiting growth and recruitment changes in response to variability in prey density or production. Annual prey availability can vary more than 10-fold in marine ecosystems, with prey experiencing a dramatic increase or pulse in production within some years. To assess the bottom-up effects of such pulses on predator growth, production, and fisheries management, we developed an age-specific, predator-prey simulation model (parameterized for summer flounder, Paralichthys dentatus) based on simple hypothesized mechanisms for consumption, growth, and population dynamics. Pulses in each of the three modeled prey groups (small crustaceans, forage …
A Generalized Model For Longitudinal Short- And Long-Term Mortality Data For Commercial Fishery Discards And Recreational Fishery Catch-And-Releases, Hp Benoit, Cw Capizzano, Rj Knotek, David Rudders, Ja Sulikowski, Et Al.
A Generalized Model For Longitudinal Short- And Long-Term Mortality Data For Commercial Fishery Discards And Recreational Fishery Catch-And-Releases, Hp Benoit, Cw Capizzano, Rj Knotek, David Rudders, Ja Sulikowski, Et Al.
VIMS Articles
Conservation concerns and new management policies such as the implementation of ecosystem-based approaches to fisheries management are motivating an increasing need for estimates of mortality associated with commercial fishery discards and released fish from recreational fisheries. Traditional containment studies and emerging techniques using electronic tags on fish released to the wild are producing longitudinal mortality-time data from which discard or release mortalities can be estimated, but where there may also be a need to account analytically for other sources of mortality. In this study, we present theoretical and empirical arguments for a parametric mixture-distribution model for discard mortality data. We …
Ecology Of The Ocean Sunfish, Mola Mola, In The Southern California Current System, Tm Thys, Jp Ryan, H Dewar, Cr Perle, K Lyons, Kevin C. Weng, Et Al.
Ecology Of The Ocean Sunfish, Mola Mola, In The Southern California Current System, Tm Thys, Jp Ryan, H Dewar, Cr Perle, K Lyons, Kevin C. Weng, Et Al.
VIMS Articles
The common ocean sunfish, Mola mola, occupies a unique position in the eastern Pacific Ocean and the California Current Large Marine Ecosystem (CCLME) as the world's heaviest, most fecund bony fish, and one of the most abundant gelativores. M. mola frequently occur as bycatch in fisheries worldwide and comprise the greatest portion of the bycatch in California's large-mesh drift gillnet fishery. In this first long-term tagging study of any ocean sunfish species in the eastern Pacific, 15 M. mola (99 cm to 200 cm total length) were tagged in the southern California Bight (SCB) between 2003 and 2010 using 14 …
Evaluating The Predictive Performance Of Empirical Estimators Of Natural Mortality Rate Using Information On Over 200 Fish Species, Ay Then, Jm Hoenig, Ng Hall, Da Hewitt
Evaluating The Predictive Performance Of Empirical Estimators Of Natural Mortality Rate Using Information On Over 200 Fish Species, Ay Then, Jm Hoenig, Ng Hall, Da Hewitt
VIMS Articles
Many methods have been developed in the last 70 years to predict the natural mortality rate, M, of a stock based on empirical evidence from comparative life history studies. These indirect or empirical methods are used in most stock assessments to (i) obtain estimates of M in the absence of direct information, (ii) check on the reasonableness of a direct estimate of M, (iii) examine the range of plausible M estimates for the stock under consideration, and (iv) define prior distributions for Bayesian analyses. The two most cited empirical methods have appeared in the literature over 2500 times to date. …
Spatiotemporal Overlap Of Spiny Dogfish (Squalus Acanthias) And Commercial Fisheries In The Northeast Us Shelf Large Marine Ecosystem, Skyler R. Sagarese, Michael G. Frisk, Robert M. Cerrato, Kathy A. Sosebee, John Musick, Paul J. Rago
Spatiotemporal Overlap Of Spiny Dogfish (Squalus Acanthias) And Commercial Fisheries In The Northeast Us Shelf Large Marine Ecosystem, Skyler R. Sagarese, Michael G. Frisk, Robert M. Cerrato, Kathy A. Sosebee, John Musick, Paul J. Rago
VIMS Articles
Commercial fishermen have argued that localized concentrations of spiny dogfish (Squalus acanthias) in the northeast U.S. shelf large marine ecosystem (NES LME) have impeded their fishing operations when monitoring surveys estimated lower relative abundances. Fishery-dependent and -independent data were analyzed simultaneously to examine whether increased spatial overlap between spiny dogfish and commercial fisheries may explain high catches of this species on fishing grounds. Spatial overlap was quantified between spiny dogfish distribution and commercial fisheries from 1989 to 2009 during autumn and spring in the NES LME. Combined, the sink gillnet (SGN) and otter trawl (OT) fisheries accounted for the majority …
Ontogenetic And Sex-Specific Shifts In The Feeding Habits Of The Barndoor Skate, Joseph D. Schmitt, Todd Gedamke, William D. Dupaul, John A. Musick
Ontogenetic And Sex-Specific Shifts In The Feeding Habits Of The Barndoor Skate, Joseph D. Schmitt, Todd Gedamke, William D. Dupaul, John A. Musick
VIMS Articles
Diet analysis is critical in understanding the flow of energy within marine food webs and is necessary for trophic ecosystem modeling and subsequent ecosystem-based management recommendations. This study represents the first comprehensive diet description for the Barndoor Skate Dipturus laevis, the largest rajid species found on the continental shelf in the northwestern Atlantic Ocean. Stomach contents were extracted from 273 individual skate caught as bycatch in the commercial scallop fishery on Georges Bank and a total of 31 prey species were identified. The Barndoor Skate feeds primarily upon sand shrimp Crangon septemspinosa, the rock crab Cancer irroratus, the Acadian hermit …