Aquaculture and Fisheries Commons^™

Practical Oyster Larvae And Remote Deployment Pool, Albert Pollard

Reports

This grant will evaluate the costs of constructing and operating a 100 bushel “floating pool” in which aged, washed, and containerized shell is placed with purchased larvae for setting on the cultch. The 100 bushel sized pool is being proposed because it is a sample size large enough to test future scalability but small enough to manage as a controlled experiment. In addition, the proposal will compare the setting efficiency of the pool vs the standard upland tanks. Also, we intend to test practicality - after lifting the skirt that forms the pool – of towing the POLARDS Pool (now …

Reducing Theft Of Oysters Through The Use Of Rfid Technology, Tommy Kelllum, Albert Pollard Sr.

Reports

Poaching (theft) of oyster from the oyster beds is a huge problem. Purpose of this study is to assess a means of reducing poaching. The means to be studied is the use of RFID (Radio Frequency Identification) tags to mark oysters that would be placed on the beds so that when oysters from those beds are brought to the seafood processor, their origin can be identified. A detailed discussion of RFID appears in a later section of this study.

RFID tags are to be put in dummy oysters, which should be hard to detect from real oysters. The shells must …

Black Soldier Fly Larvae Manual, Haeree H. Park

Student Showcase

This manual is a resource for fisheries, hatcheries, and farms of all types that wish to exercise a sustainable management system utilizing black soldier fly larvae through the minimization of waste. Although black soldier fly larvae can be fed to small livestock such as chickens and rodents, this project and manual are tailored specifically to freshwater fish in hopes of closing the significant gap and inefficiencies of fish management and subsequent waste throughout the New England coastal area. There is an evident opportunity to harness black soldier fly larvae’s extraordinary bioconversion of organic matter that can lead to not only …

Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay : Annual Progress Report : 2015-2016, Christopher D. Davis, Mary C. Fabrizio, Troy D. Tuckey

Reports

The 2015 Striped Bass juvenile abundance index was 12.00 and was not significantly greater than the historic average of 8.63. Compared with their respective historic averages abundance indices from individual rivers in 2015 varied, such that significantly higher recruitment was observed in the Rappahannock River and average recruitment was observed in the James and York rivers. Relatively higher catches of young‐of‐the‐year Striped Bass at upriver and downriver auxiliary sites suggest expansion of Striped Bass nursery grounds in 2015. Unlike Striped Bass in Virginia waters, juvenile White Perch abundance indices in 2015 were significantly greater than the historic average for this …

Evaluating Recruitment Of American Eel, Anguilla Rostrata, In The Potomac River (Spring 2016), Troy D. Tuckey, Mary C. Fabrizio

Reports

American Eel (Anguilla rostrata) is a valuable commercial species along the Atlantic coast of North America from New Brunswick to Florida. Landings from Chesapeake Bay typically represent 60% of the annual United States commercial harvest (ASMFC 2012). American Eel is also important to the recreational fishery as it is often used live as bait for Striped Bass (Morone saxatilis) and Cobia (Rachycentron canadum). In 2012, Chesapeake Bay commercial landings of American Eel (771,536 lbs) were 72% of the U.S. landings (personal communication from the National Marine Fisheries Service, Fisheries Statistics Division). Since the 1980s, harvest along the U.S. Atlantic Coast …

Two New Species Of Geosesarma De Man, 1892 (Crustacea: Brachyura: Sesarmidae) From Palawan, The Philippines, Hendrik Freitag, Marivene Manuel-Santos, Peter K.L Ng

Biology Faculty Publications

Two new and relatively large species of semi-terrestrial sesarmid crabs of the genus Geosesarma De Man, 1892, are described from Palawan Island, Philippines. They are distinguishable from congeners by the characteristic structure of their carapace, chelipeds, ambulatory legs and male first gonopods. Aspects of their ecology are briefly discussed

A Highly Sensitive Underwater Video System For Use In Turbid Aquaculture Ponds, Chin-Chang Hung, Shih-Chieh Tsao, Kuo-Hao Huang, Hsu-Kunag Chang, Fred C. Dobbs

OES Faculty Publications

The turbid, low-light waters characteristic of aquaculture ponds have made it difficult or impossible for previous video cameras to provide clear imagery of the ponds' benthic habitat. We developed a highly sensitive, underwater video system (UVS) for this particular application and tested it in shrimp ponds having turbidities typical of those in southern Taiwan. The system's high-quality video stream and images, together with its camera capacity (up to nine cameras), permit in situ observations of shrimp feeding behavior, shrimp size and internal anatomy, and organic matter residues on pond sediments. The UVS can operate continuously and be focused remotely, a …

The Influence Of A Severe Reservoir Drawdown On Springtime Zooplankton And Larval Fish Assemblages In Red Willow Reservoir, Nebraska, Jason A. Deboer, Christa M. Webber, Taylor A. Dixon, Kevin L. Pope

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Reservoirs can be dynamic systems, often prone to unpredictable and extreme waterlevel fluctuations, and can be environments where survival is difficult for zooplankton and larval fish. Although numerous studies have examined the effects of extreme reservoir drawdown on water quality, few have examined extreme drawdown on both abiotic and biotic characteristics. A fissure in the dam at Red Willow Reservoir in southwest Nebraska necessitated an extreme drawdown; the water level was lowered more than 6 m during a two-month period, reducing reservoir volume by 76%. During the subsequent low-water period (i.e., post-drawdown), spring sampling (April-June) showed dissolved oxygen concentration was …

Adaptive Management For Ecosystem Services, Hannah E. Birgé, Craig R. Allen, Ahjond S. Garmestani, Kevin L. Pope

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Management of natural resources for the production of ecosystem services, which are vital for human well-being, is necessary even when there is uncertainty regarding system response to management action. This uncertainty is the result of incomplete controllability, complex internal feedbacks, and nonlinearity that often interferes with desired management outcomes, and insufficient understanding of nature and people. Adaptive management was developed to reduce such uncertainty. We present a framework for the application of adaptive management for ecosystem services that explicitly accounts for cross-scale tradeoffs in the production of ecosystem services. Our framework focuses on identifying key spatiotemporal scales (plot, patch, ecosystem, …