Aquaculture and Fisheries Commons^™

Fisheries Research Report No. 188 - Results Of The 2007 Survey Of The Albany Marine Area For Introduced Marine Species, Justin I. Mcdonald, Fred E. Wells, Michael J. Travers

Fisheries Research Reports

A survey of the Albany marine area (King George Sound, Princess Royal Harbour and Oyster Harbour) for introduced marine pest species was conducted in 2007. This survey was trialling the new system of monitoring for introduced marine pests developed by the National Introduced Marine Pests Coordination Group (NIMPCG). This study represents one of the first trials of this system (the first trial commenced in South Australia is still ongoing). In this survey fifty-two of the fifty-five potential pest species were targeted. Three species were excluded on the basis of salinity and/or temperature tolerances being exceeded. A wide variety of sampling …

Fisheries Research Report No. 183 - Development Of A Long-Term Program To Monitor Coastal Communities Within The Swan Region, Lynda M. Bellchambers

Fisheries Research Reports

Marine benthic communities along the metropolitan coast of Western Australia are varied and unique. The southward flowing Leeuwin Current brings warm water and tropical recruits whilst the cooler counter current, the Capes Current, brings the temperate recruits. The result is a mosaic of tropical species intermingled with the dominant temperate species. These areas sustain varied fish and invertebrate communities making this coast a highly desirable location for recreational and commercial use. Management strategies are in place that attempt to maintain the sustainability of this area including various fishery restrictions and the implementation of areas zoned as sanctuary zones (no-take). However, …

Fisheries Research Report No. 185 - Performance Indicators, Biological Reference Points And Decision Rules For Western Australian Abalone Fisheries (Haliotis Sp.): (1) Standardised Catch Per Unit Effort, Anthony M. Hart, Frank Fabris, Nick Caputi

Fisheries Research Reports

This report summarises the performance indicators (PIs) and biological reference points (BRPs) developed from standardised catch per unit effort (SCPUE) models of the Western Australian abalone fisheries. It also outlines analysis and consultation processes used to construct these indicators. Other PIs, such as those relating to harvest rate and recruitment, will be developed when more fishery independent data becomes available.

A comprehensive 7-step process was utilised to develop PIs.

1) The Abalone Management and Advisory Committee (AbMac) considered options and advised that in the short-term, catch and effort trends be reviewed with other potential indicators to be considered at a …

Fisheries Occasional Publication 61 - Proposed Quota Settings For The West Coast Rock Lobster Managed Fishery, Department Of Fisheries, Wa

Fisheries Occasional Publications

The former Minister for Fisheries asked the Rock Lobster Industry Advisory Committee (RLIAC) to provide him with a business case for a quota management system (QMS) in the West Coast Rock Lobster Managed Fishery, following renewed interest from industry for the introduction of a QMS. The business case consists of two components:

1. a management paper that describes the proposed quota management settings; and

2. an interactive spreadsheet financial model for licensees to explore the impact of the proposed management settings on their business. A RLIAC Working Group was established by RLIAC to develop the proposed QMS settings. Most of …

Seasonal Variation Of Ectosymbiotic Ciliates On Farmed And Wild Shrimps From Coastal Yucatan, Mexico, Norma A. López-Téllez, Victor M. Vidal-Martínez, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

High levels of ciliate infestation can affect respiration, feed intake, and locomotion in farmed shrimps in the tropics. Information on seasonal variation of the infestation parameters of ciliates is scarce, but it would be useful for determining the suitability of preventive measures or therapeutic treatment if necessary. This study aimed to describe the prevalence and mean intensity of infestation (MII) of ciliates on wild native shrimps Penaeus (Farfantepenaeus) brasiliensis and P. (Farfantepenaeus) duorarum and farm-cultured juvenile shrimp Penaeus (Litopenaeus) vannamei over an annual cycle and to determine whether an association existed among physicochemical factors …

Assessment Of Endocrine And Gonadal Condition Of Male Largemouth Bass From Lake Mead, Nevada, Reynaldo Patino, Steven L. Goodbred, Erik Orsak, Jill A. Jenkins, Michael R. Rosen

Lake Mead Science Symposium

Las Vegas Bay (LVB) of Lake Mead receives combined flows of tertiary treated wastewater effluent, urban runoff, and groundwater from the Las Vegas metropolitan area. This study examined the potential for endocrine disrupting effects of these anthropogenic inputs on male largemouth bass (Micropterus salmoides). Adult male bass were collected at two sites within Lake Mead: Overton Arm (OA, reference site), and Las Vegas Bay (LVB). Post-spawn fish were collected in July 2007 (n = 6-10 per site) and pre-spawn fish in March 2008 (n = 13 per site). Post-spawn fish were characterized by regressed testes whereas pre-spawn bass had full-grown …

The Occurrence Of Batrachochytrium Dendrobatidis In Salamander Populations Of West Virginia, Casey John Bartkus

Theses, Dissertations and Capstones

Batrachochytrium dendrobatidis (Bd), otherwise known as the amphibian chytrid fungus, is a pathogen that causes the amphibian disease, chytridiomycosis. While Bd has been found in amphibian populations in other states across the country, little is known of its occurrence in West Virginia. Batrachochytrium dendrobatidis is highly associated with amphibians in montane habitats. Because West Virginia has the highest mean elevation of any state east of the Mississippi River, amphibians in the state may be at high risk of an outbreak. The goal of this study was to determine the status of Bd in salamander species of concern in West Virginia. …

The Natural History Of Cave-Associated Populations Of Eurycea L. Longicauda With Notes On Sympatric Amphibian Species, Kevin Wayne Saunders

Theses, Dissertations and Capstones

The purpose of this study was to collect data on the natural history of the Long-tailed Salamander (Eurycea l. longicauda) in eastern Kentucky and West Virginia. The objectives of this research included characterization of epigean and hypogean habitat for this species, recording distances moved by individuals in populations associated with caves, and collection of data on courtship, oviposition, and larval development. The primary study site was Carter Caves State Park in Olive Hill, Kentucky. This area was visited from October 2007 to December 2008. Salamanders were photographed for identification based on unique pattern aberrancies and distances were measured between the …

Distribution And Status Of The Northern Leopard Frog, Rana Pipiens, In West Virginia, Amanda Nicole Spriggs

Theses, Dissertations and Capstones

The Northern Leopard Frog, Rana pipiens, is listed as a species of concern by the West Virginia Division of Natural Resources. Because this species is uncommon in West Virginia, information is needed to understand its distribution and conservation needs. I surveyed 14 historic R. pipiens locations and 70 Wildlife Management Areas throughout West Virginia beginning in March 2008. Rana pipiens was found in four locations; Greenbottom Wildlife Management Area was confirmed through both auditory and visual surveys and the rest were confirmed through visual observations. Besides Greenbottom Wildlife Management Area, all other sites were confirmed by the presence of a …

A Reconnaissance Of The Intersex Condition In Micropterus Dolomieu Of The Upper Ohio River Basin As An Indicator Of Anthropogenic Endocrine Disruptors, Christopher Barry

Theses, Dissertations and Capstones

The intersex condition has been used as a marker of endocrine disruption in West Virginia. Fifty-two male smallmouth bass from 6 basins on the upper Ohio River were examined for the presence and severity of intersex. Vitellogenin (VTG) RNA levels were quantified as marker of estrogenic contaminants. A significant increase in intersex (p=0.02), ranging from 83.3% to 100%, corresponds with higher population densities and agricultural land (p=0.003). At reference sites, smallmouth bass had intersex frequencies of 16.7% to 33.3%. Vitellogenin results were significantly lower (p< 0.001) at impacted sites, consistent with previously reported results in female fish. VTG levels in males were not significantly different. Increased intersex occurrence in males and lowered VTG expression in females have shown that agricultural chemicals and common residential wastewater constituents are likely targets for exploring the relationship between individual EDCs and intersex. There may be a natural background level of the intersex condition.

Distribution Of Woodland Salamanders Of The Valley And Ridge In West Virginia, H. Reid Downer

Theses, Dissertations and Capstones

Two terrestrial woodland salamanders of the genus Plethodon, P. punctatus and P. virginia, are endemic to the Valley and Ridge Physiographic Province in West Virginia and Virginia and occupy limited geographic ranges. Two common and widespread species, P. cylindraceus and P. cinereus, also inhabit this region. To evaluate the distribution and habitat of these terrestrial salamanders I surveyed wooded ridges and slopes throughout the geographic range of the two endemic species by conducting daytime cover object searches and nocturnal visual encounter surveys. From March through November 2008, I recorded the presence of 321 woodland salamanders at 91 sites. I used …

Nutrient Limitation Of Phytoplankton By Nitrogen And Phosphorus: Erosion Of The Phosphorus Paradigm, Wayne A. Wurtsbaugh, William M. Lewis Iii

Watershed Sciences Faculty Publications

No abstract provided.

Extreme Eutrophication And Cyanotoxin Levels In Farmington Bay, A Polluted Embayment Of The Great Salt Lake, Utah, Wayne A. Wurtsbaugh, Amy M. Marcarelli, Gregory Boyer

Watershed Sciences Faculty Publications

The Great Salt Lake of Utah is surrounded on its eastern and southern shores by 1.4 million people, with projections of 5 million by 2050. Agricultural, industrial and particularly secondary-treated domestic wastes from this population flow primarily into Farmington Bay, a 280 km2 shallow "estuary" with a mean depth near 0.5 m. Fish are rare but bird use is extensive and massive mortalities of waterfowl and shorebirds have occurred in the bay. Phosphorus loading rates of >2 g m-2yr-1 cause hypereutrophic conditions: Secchi depths are usually 0.6 mg/L, mean Chl. a is 179 ug/L and the combined trophic state index …

Effects Of Intense Grazing On Cattails

United States Fish and Wildlife Service: Publications

The Rainwater Basin Wetland Management District is often asked the question “If your job is to manage for wildlife, why are you grazing the vegetation? There is nothing left for wildlife!”

It is believed that historically, grazing of Rainwater Basin wetlands by large herds, especially during dry conditions was a driving force in keeping wetland vegetation in an early successional state. Likewise, it is commonly observed that the lack of disturbance by animals, fire, or mechanical means will cause wetland vegetation to shift from annual, early successional plants to perennial, late successional plants such as cattail and river bulrush.

Historical …

Working With Partners In Montana, Wyoming, Utah, Colorado, North Dakota, South Dakota, Nebraska And Kansas To Conserve Fish And Wildlife Resources

United States Fish and Wildlife Service: Publications

The Mountain-Prairie Region Fisheries Program (Program) of the U. S. Fish and Wildlife Service (Service) historically has played an important role in conservation and management of fish and other aquatic resources and key wildlife resources on tribal and DOD lands. In 2002, a new national vision was developed entitled Conserving America’s Fisheries, U. S. Fish and Wildlife Service Fisheries Program Vision for the Future. The purpose of this Vision has been to improve the Service’s ability to fulfill its resource conservation and management role and to improve relationships with our partners. That Vision was stepped down regionally into a …

Mercury In The Biostrome Community Of The Great Salt Lake, Wayne A. Wurtsbaugh, Caleb Izdepski

Watershed Sciences Faculty Publications

No abstract provided.

Freshwater Responses To Nitrogen And Phosphorus Pollution And A Case Study Of Cutler And Dingle Marsh Wetlands, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

No abstract provided.

Field Guide To The Fishes Of Eastern Washington, Allan T. Scholz, Holly J. Mclellan, Judy Mcmillan, Larry Conboy, Michelle Kirkendall, Angela Davis, Eastern Washington University. Department Of Biology., Eastern Washington University. University Graphics., United States. Bureau Of Land Management.

Biology Faculty Publications

"This book was prepared through a grant from the United States Department of the Interior, Bureau of Land Management (BLM)."

The South Coast Crustacean Fishery. A Discussion Paper., Department Of Fisheries Western Australia

Fisheries Management Papers

Fishing for crustaceans including southern and western rock lobster and deep-sea crab species on the south coast of Western Australia began in the 1960s and has developed significantly through improvements in technology, vessel reliability and the risk and endeavour of some fishers. The expansion in the capacity of the fleet has lead to the development of two managed fisheries.

This paper provides a brief outline of the history of the fishery; details the fishing and management methods presently used; and discusses the options available for future management, particularly ways of limiting fishing effort.

Prawn Aquaculture In Western Australia. Final Esd Risk Assessment Report For Prawn Aquaculture., Department Of Fisheries Western Australia

Fisheries Management Papers

The Western Australian Department of Fisheries is responsible for the management of aquaculture in WA and is committed to implementing ESD. These principles are contained within the objectives of the Fish Resources Management Act 1994 and the Department is keen to demonstrate both to the Government and the broader community that these principles are being achieved. The Department developed a policy statement in 2002 - Policy for the Implementation of Ecologically Sustainable Development for Fisheries and Aquaculture within Western Australia - (Fletcher 2002) that described its direction to the Department on incorporating ESD within fisheries and aquaculture management.

Using the …

Sublethal Exposure To Two Alkylphenolic Compounds And Their Influence On Development, Growth And Reproductive Behavior Of Crayfish, Steven J. Gauthier, Daniel A. Bergman

Student Summer Scholars Manuscripts

Invertebrates make up much of the world's biological diversity. Their survival is fundamental to the maintenance of all life, and their ubiquitous distribution is useful when using them as biological indicators of pollution. Many invertebrate species are under threat of extinction due to exposure to various chemical pollutants. Crayfish are an important invertebrate that is affected by chemical pollutants, such as pesticide/herbicide runoff and industrial waste effluents. Crayfish are considered keystone species because they are an important resource for other species and consequently influence diversity and abundance. For these reasons, crayfish are important in terms of better understanding the effects …

Birding In The United States: A Demographic And Economic Analysis Addendum To The 2006 National Survey Of Fishing, Hunting, And Wildlife-Associated Recreation

United States Fish and Wildlife Service: Publications

The following report provides up-todate information so birders and policy
makers can make informed decisions regarding the management of birds and
their habitats. This report identifies who birders are, where they live, how
avid they are, and what kinds of birds they watch. In addition to demographic
information, this report also provides an economic measure of birding. It
estimates how much birders spend on their hobby and the economic impact of these expenditures.

By understanding who birders are, they can be more easily reached and informed about pressures facing birds and bird habitats. Conversely, by knowing who is likely not …

Characterization Of 24 Microsatellite Loci In Delta Smelt, Hypomesus Transpacificus, And Their Cross-Species Amplification In Two Other Smelt Species Of The Osmeridae Family, Kathleen M. Fisch, Jessica Lynn Petersen, Melinda R. Baerwald, John K. Pedroia, Bernie May

Department of Animal Science: Faculty Publications

We characterized 24 polymorphic tetranucleotide microsatellite loci for delta smelt (Hypomesus transpacificus) endemic to the San Francisco Bay Estuary, California, USA. Screening of samples (n = 30) yielded two to 26 alleles per locus with observed levels of heterozygosity ranging from 0.17 to 1.0. Only one locus deviated from Hardy–Weinberg equilibrium, suggesting these individuals originate from a single panmictic population. Linkage disequilibrium was found in two pairs of loci after excluding the locus out of Hardy–Weinberg equilibrium. Twenty-two primer pairs cross-amplified in wakasagi smelt (Hypomesus nipponensis), and 15 primer pairs cross-amplified in longfin smelt ( …

Assessment Of River Herring And Striped Bass In The Connecticut River: Abundance, Population Structure, And Predator/Prey Interactions, Justin P. Davis, Eric T. Schultz, Jason Vokoun

EEB Articles

Populations of anadromous alewife Alosa pseudoharengus and blueback herring A. aestivalis, collectively referred to as river herring, have declined in the Connecticut River. An explanatory hypothesis for these declines is that predation pressures have increased as a result of recent increases in abundance of sympatric striped bass Morone saxatilis. We sampled river herring and striped bass from the stretch of the Connecticut River between Wethersfield, CT and Holyoke, MA during the vernal migration seasons of 2005-2008. The objectives of the sampling program were to assess abundance, temporal/spatial distribution, and population structure of both river herring and striped bass, …

Estimating Predation On Declining River Herring: Tag-Recapture Study Of Striped Bass In The Connecticut River, Eric T. Schultz, Justin P. Davis, Jason Vokoun

EEB Articles

Populations of anadromous alewife Alosa pseudoharengus and blueback herring Alosa aestivalis, collectively referred to as river herring, have declined in the Connecticut River. A hypothesis for why river herring have declined is that predation pressures have increased associated with recent increases in abundance of striped bass Morone saxatilis. Information on striped bass abundance, size structure, and consumption rates are required to test this hypothesis. This study was designed to provide estimates of striped bass population size in the Connecticut River during the spring migration season, via an intensive mark-recapture exercise and either an open or robust mark-recapture model. …

Limnological Analyses Of Cutler Reservoir And Dingle Marsh With Respect To Eutrophication, J. D. Abbott, Deb Collins, Colin Cook, Dan Lamarra, Ryan Leonard, Ben Marret, Justin Stout, Gilbert Rowley, Jeremy Rowley, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

Cutler Reservoir is located in Cache county, Utah and was created for the purposes of irrigation, water storage and flood control. High nutrient loading to Cutler has raised concerns about the health of this system and has resulted in it being listed on the state's 303(d) list of impaired waters. The TMDL plan being drafted for Cutler lists dissolved oxygen and phosphorous as the key issues of concern. The underlying problem created by nutrient loading is eutrophication. If Cutler is to remain as a valuable source of recreation, wildlife habitat, and water for the Cache Valley we must understand the …

Thirty-Seven Additional Microsatellite Loci In The Pacific Lion-Paw Scallop (Nodipecten Subnodosus) And Cross-Amplification In Other Pectinids, Jessica Lynn Petersen, Ana M. Ibarra, Bernie May

Department of Animal Science: Faculty Publications

We characterized 37 new microsatellite markers in the Pacific lion-paw scallop (Nodipecten subnodosus) and tested for cross-amplification in four other species. Genetic diversity was estimated using 24 individuals from the Lagoon Ojo de Liebre, B.C.S., Mexico. Allelic richness varied from 5 to 27 alleles per locus and the average expected heterozygosity was 0.76. Ten loci exhibited significant departure from Hardy–Weinberg equilibrium likely due to the presence of null alleles. Sixteen of these markers cross-amplified in closely related N. nodosus, while little or no amplification was observed in three Argopecten species.

Evaluating The Effectiveness Of Grassbed Treatments As Habitat For Juvenile Black Bass In A Drawdown Reservoir, D. R. Ratcliff, Wayne A. Wurtsbaugh, J. Zustak

Watershed Sciences Faculty Publications

Many reservoirs in arid regions experience highly variable water levels caused by seasonal inflow fluctuations and designated outflow requirements. At Shasta Lake, California, managers plant cereal-grain grassbeds on exposed drawdown shorelines to increase juvenile fish habitat, localize productivity, and increase invertebrate fish prey. To determine the efficacy of these plantings, the abundance of juvenile black basses Micropterus spp. (20–55 mm standard length) and the amount of periphyton and macroinvertebrate prey were compared among three treatment types: (1) planted grassbeds of cereal barley Hordeum vulgare; (2) artificial rope grassbeds, which eliminated physical deterioration and nutrient release; and (3) nonplanted control sites …

Application Of Multiple Mass Spectrometric Techniques In The Isolation, Determination And Characterisation Of The Marine Toxins; Azaspiracid, Keith O'Callaghan

Theses

The Azaspiracids are a class of polyether marine biotoxins that present a significant health risk to consumers of shellfish. Since their discovery in the late 1990s several human intoxications have been reported, and traced to Irish shellfish farms resulting in closures or harvest rejections. As such incidents involving azaspiracid shellfish poisoning have a major socio-economic impact on communities that rely on shellfish farming revenues.

Recent evidence suggests that azaspiracid poisoning events may become more commonplace. With this increased risk the understanding of azaspiracids mode of action and biological targets becomes crucial. To support these endeavours effective analytical methods need to …

Peptide Hydrolysis And The Uptake Of Dipeptides By Phytoplankton, Margaret R. Mulholland, Cindy Lee

OES Faculty Publications

Rates of peptide hydrolysis (using the fluorescent substrate, lucifer yellow anhydride-labeled tetra-alanine) and dipeptide uptake (using dually labeled, ¹⁵N and ¹³C, dialanine) were measured in phytoplankton cultures and in natural populations during algal blooms dominated by one or two taxa. During most sampling events, both peptide hydrolysis and dipeptide uptake were greatest in the size fraction containing the dominant phytoplankter, suggesting that phytoplankton contribute substantially to or may even dominate observed extracellular peptide hydrolysis and dipeptide uptake in the environment. These are the first data suggesting that dipeptides may be taken up directly by phytoplankton and this may …