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2008

University of Nebraska - Lincoln

Articles 1 - 12 of 12

Full-Text Articles in Aquaculture and Fisheries

Frequently Asked Questions Rat Island Habitat Restoration Project Oct 2008

Frequently Asked Questions Rat Island Habitat Restoration Project

United States Fish and Wildlife: Staff Publications

A conservation partnership is restoring the native ecosystem of Rat Island in the Alaska Maritime National Wildlife Refuge by eliminating introduced rats. The ecosystem, especially the bird population, was decimated by the introduction of Norway rats via a shipwreck in the 1780’s. There are virtually no seabirds and few other birds left on Rat Island. Successful rat eradication would restore habitat and allow birds to re-colonize the island. The first step in island restoration, applying rodenticide to the island, was completed in early October. Biological monitoring in the summer of 2009 and 2010 will determine if all the rats have …

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Stable Yellowhead Virus (Yhv) Rna Detection By Qrt-Pcr During Six-Day Storage, Hongwei Ma, Robin M. Overstreet, Jean A. Jovonovich Jun 2008

Stable Yellowhead Virus (Yhv) Rna Detection By Qrt-Pcr During Six-Day Storage, Hongwei Ma, Robin M. Overstreet, Jean A. Jovonovich

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Storage conditions of haemolymph samples which contain yellowhead virus (YHV) may result in a decline of YHV RNA concentration or false-negative results in the detection of YHV. We evaluated the stability of YHV RNA in haemolymph stored at different temperatures for 6 d with conventional RT-PCR and TaqMan qRT-PCR. Specific pathogen-free individuals of Litopenaeus vannamei were challenged with YHV92TH isolate, and haemolymph samples of 3 groups of 10 pooled moribund shrimp were aliquoted and stored at 4 and 25°C for 0, 2, 6, 12, 24, 48, 72, 96, 120, and 144 h. All samples were evaluated by conventional RT-PCR and …

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Multi-Ideal-Adic Completions Of Noetherian Rings, William J. Heinzer, Christel Rotthaus, Sylvia Wiegand Jan 2008

Multi-Ideal-Adic Completions Of Noetherian Rings, William J. Heinzer, Christel Rotthaus, Sylvia Wiegand

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Let R be a commutative ring with identity. A filtration on R is a decreasing sequence {In}∞ n=0 of ideals of R. Associated to a filtration is a well-defined completion R ∗ = l←i−mn R/In and a canonical homomorphism ψ : R → R ∗ [13, Chap. 9]. If ∞ n=0 In = (0), then ψ is injective and R may be regarded as a subring of R ∗ [13, p. 401]. In the terminology of Northcott, a filtration {In}∞ n=0 is multiplicative if I0 = R and InIm ⊆ In+m for all m ≥ 0 and n ≥ 0 …

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Use Of Microbial Transglutaminase And Nonmeat Proteins To Improve Functional Properties Of Low Nacl, Phosphate-Free Patties Made From Channel Catfish (Ictalurus Punctatus) Belly Flap Meat, Byungrok Min, Bartholomew W. Green Jan 2008

Use Of Microbial Transglutaminase And Nonmeat Proteins To Improve Functional Properties Of Low Nacl, Phosphate-Free Patties Made From Channel Catfish (Ictalurus Punctatus) Belly Flap Meat, Byungrok Min, Bartholomew W. Green

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

This study was aimed at developing value-added low sodium chloride (NaCl), phosphate-free restructured patties using minced channel catfish (Ictalurus punctatus) belly flap meat. The effect of microbial transglutaminase (MTGase) and nonmeat proteins (isolated soy protein, ISP, and whey protein concentrate, WPC; 1.7%, respectively) alone and in combinationwere evaluated to improve cooking yield and textural properties in patties with reduced NaCl and no phosphate. The concentration effect of MTGase (0.05% to 0.7%) was also studied. The addition of MTGase increased textural properties such as binding strength, hardness, cohesiveness, chewiness, and springiness, but decreased cooking yield of the patties ( …

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Stocking Strategies For Production Of Litopenaeus Vannamei (Boone) In Amended Freshwater In Inland Ponds, Bartholomew W. Green Jan 2008

Stocking Strategies For Production Of Litopenaeus Vannamei (Boone) In Amended Freshwater In Inland Ponds, Bartholomew W. Green

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The performance of the Pacific white shrimp Litopenaeus vannamei (Boone) under various stocking strategies was evaluated in earthen ponds filled with freshwater amended with major ions. Six 0.1-ha earthen ponds located in Pine Bluff, Arkansas, USA, were filled with freshwater in 2003 and 2004, and potassium magnesium sulfate added to provide 50 mg K+ L-1 and stock salt added to provide 0.5 g L-1 salinity. In 2003, three ponds either were stocked with PL15 shrimp (39 PL m-2) for 125 d of grow out or with PL25 shrimp for a 55-d (23 PL …

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Breakfast At The Cockpit Café And Other Innovations In Protected Area Outreach, Christine Baumann Feurt, Ward Feurt Jan 2008

Breakfast At The Cockpit Café And Other Innovations In Protected Area Outreach, Christine Baumann Feurt, Ward Feurt

United States Fish and Wildlife: Staff Publications

Fundamental changes in protected area outreach and education strategies are dissolving old boundaries and fostering innovative approaches to civic engagement. The practice of community-based ecosystem management as presented by Meffe et al. (2002) provides an organizing framework blending ecological, institutional and sociocultural perspectives. This framework flows from a definition of ecosystem management that considers sustaining ecosystem structure and processes across spatial and temporal scales in tandem with societal priorities. The decision-making authority in this system, envisioned as collaborative and participatory, can present challenges for traditionally trained protected area managers. This definition views ecosystem management as: . . . an approach …

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Molt And Aging Criteria For Four North American Grassland Passerines, Peter Pyle, Stephanie L. Jones, Janet M. Ruth Jan 2008

Molt And Aging Criteria For Four North American Grassland Passerines, Peter Pyle, Stephanie L. Jones, Janet M. Ruth

United States Fish and Wildlife: Staff Publications

Prairie and grassland habitats in central and western North America have declined substantially since settlement by Europeans (Knopf 1994) and many of the birds and other organisms that inhabit North American grasslands have experienced steep declines (Peterjohn and Sauer 1999; Johnson and Igl 1997; Sauer, Hines, and Fallon 2007). The species addressed here, Sprague’s Pipit (Anthus spragueii), Grasshopper (Ammodramus savannarum) and Baird’s (A. bairdii) sparrows, and Chestnut-collared Longspurs (Calcarius ornatus), are grassland birds that are of special conservation concern throughout their ranges due to declining populations and the loss of the specific …

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2008 Annual Report: Migratory Bird Conservation Commission Jan 2008

2008 Annual Report: Migratory Bird Conservation Commission

United States Fish and Wildlife: Staff Publications

Table of Contents

The Service’s Legacy of Conserving Migratory Waterfowl Habitat

The Migratory Bird Conservation Commission

The Migratory Bird Conservation Fund

MBCC Approvals for Fiscal Year 2008

MBCF Land Acquisitions for Fiscal Year 2008

National Wildlife Refuge System –– New Area and Boundary Addition Approvals for Fiscal Year 2008

Notes on Tables One and Two

Map – National Migratory Bird Refuges

Table One – National Migratory Bird Areas

Map – Wetland Management Districts

Table Two – National Waterfowl Production Areas

North American Wetlands Conservation Fund Summary of MBCC Approvals for Fiscal Year 2008

Table Three – U.S. Wetlands Conservation Standard …

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Birds Of Conservation Concern 2008 Jan 2008

Birds Of Conservation Concern 2008

United States Fish and Wildlife: Staff Publications

The 1988 amendment to the Fish and Wildlife Conservation Act mandates the U.S. Fish and Wildlife Service (USFWS) to “identify species, subspecies, and populations of all migratory nongame birds that, without additional conservation actions, are likely to become candidates for listing under the Endangered Species Act (ESA) of 1973.” Birds of Conservation Concern 2008 (BCC 2008) is the most recent effort to carry out this mandate. The overall goal of this report is to accurately identify the migratory and non-migratory bird species (beyond those already designated as federally threatened or endangered) that represent our highest conservation priorities. The …

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Trace Elements And Petroleum Hydrocarbons In The Aquatic Bird Food Chain Of Process Water Evaporation Ponds At The Little America Refinery, Casper, Wyoming, Pedro Ramirez Jan 2008

Trace Elements And Petroleum Hydrocarbons In The Aquatic Bird Food Chain Of Process Water Evaporation Ponds At The Little America Refinery, Casper, Wyoming, Pedro Ramirez

United States Fish and Wildlife: Staff Publications

This study determined the nature and extent of trace elements, metals, and petroleum hydrocarbons in evaporation ponds used for the disposal of process water from Sinclair Oil Corporation’s LARCO oil refinery in Evansville, Wyoming. This study was conducted to determine if contaminants are causing adverse effects or have the potential to adversely affect aquatic migratory birds inhabiting the evaporation ponds. The discharge of refinery process water into relict dune basins created a series of ponds that provide habitat for 39 species of aquatic migratory birds. Several aquatic bird species nest at the evaporation ponds and the adjacent natural marsh complex. …

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Mountain-Prairie Region Fisheries Program Strategic Plan Jan 2008

Mountain-Prairie Region Fisheries Program Strategic Plan

United States Fish and Wildlife: Staff Publications

This Mountain-Prairie Regional Fisheries Strategic Plan outlines where, within our Federal role, we will focus our efforts. It provides guidance to partners and the public about our priorities, mandates, and opportunities and to Congress and the Administration on future budgeting decisions.

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Evaluation Of Aerial Cluster Sampling Of Double-Crested Cormorants On Aquaculture Ponds In Mississippi, Brian S. Dorr, Loren W. Burger Jr., Scott C. Barras Jan 2008

Evaluation Of Aerial Cluster Sampling Of Double-Crested Cormorants On Aquaculture Ponds In Mississippi, Brian S. Dorr, Loren W. Burger Jr., Scott C. Barras

USDA Wildlife Services: Staff Publications

Concern over increasing numbers of double-crested cormorants (Phalacrocorax auritus) and their impacts on channel catfish (Ictalurus punctatus) aquaculture has resulted in increased need for quantitative information to develop and evaluate depredation management efforts. We evaluated aerial surveys in a stratified cluster sampling (SCS) design to estimate and monitor abundance of cormorants on catfish aquaculture ponds in the Yazoo River Basin of Mississippi, USA (hereafter Yazoo Basin). Twice monthly abundance estimates and coefficient of variation during winter averaged 8,128 (n = 29, SE = 1,233) and 33% (n = 29, SE = 0.02), respectively. Counts of cormorants …

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