Geoffrey C. Waldbieser

Multiple, low-dose copper sulfate pentahydrate treatment effects on water quality and bacterial, phytoplankton, and zooplankton communities in catfish aquaculture ponds

Bradley M. Richardson, Charles C. Mischke, Caitlin E. Older, Monica Wood et autres

Abstract Objective In U.S. catfish aquaculture, copper sulfate pentahydrate (CSP; CuSO4·5H2O) is used for a wide variety of applications, including the control of blue-green algae, pathogenic bacteria, and parasite hosts. However, information on the pondwide effects of multiple low-dose treatments is lacking. …

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De Novo Genome Assemblies of Four Rainbow Trout Genetic Lines Reveal Structural Variants in Pursuit of a Pangenome Reference

Ali Ali, Geoffrey C. Waldbieser, Ramey C. Youngblood, Paul Wheeler et autres

Rainbow trout (Oncorhynchus mykiss) exhibit extensive genomic diversity shaped by domestication, life history and geographic origin. To advance the development of a comprehensive pangenome reference, we present new de novo genome assemblies of two genetically and ecologically distinct lines: Whale Rock (WR; …

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Intraspecific Variation of Edwardsiella anguillarum From Non‐Anguillid Fish From Varied Geographic Origins

Abigail R. Armwood, Divya Rose, Geoffrey C. Waldbieser, Ethan T. Woodyard et autres

ABSTRACT Edwardsiella anguillarum is a gram‐negative bacterium, synonymous with previously described atypical, fish‐pathogenic Edwardsiella tarda . Originally described from eels in 2015, E. anguillarum is an important global fish pathogen, particularly in tilapia. This study describes intraspecific phenotypic and genotypic variability among …

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Genotypic, phenotypic, and serologic characterization of Edwardsiella ictaluri isolates from catfish and ornamental fish from the southeastern USA

Divya Rose, Benjamin R. LaFrentz, Ethan T. Woodyard, Geoffrey C. Waldbieser et autres

This study explores the phenotypic, genotypic, and serological differences among Edwardsiella ictaluri isolated from farm-raised catfish Ictalurus spp. and ornamental fish (Danio spp. and Puntius tetrazona) in the USA. Plasmid analyses revealed diverse plasmid profiles, with varied antimicrobial resistance genes indicating diverse …

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Trematode parasitism increases mortality in marsh ramshorn snails Planorbella trivolvis exposed to repeated low-dose copper sulfate treatments in laboratory trials

Bradley M. Richardson, Charles C. Mischke, Thomas G. Rosser, Sujita Balami et autres

ABSTRACT Objective Controlling the trematode Bolbophorus damnificus in catfish aquaculture relies on disrupting the parasite life cycle by targeting the snail intermediate hosts. Copper sulfate pentahydrate (CSP) is a common and effective molluscicide but can have adverse effects on fish health. In …

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Streptococcus dysgalactiae From Farm‐Raised Channel Catfish in Mississippi, USA, With Notes on Fish‐Associated Group C S. dysgalactiae

Sujita Balami, Lester H. Khoo, Caitlin E. Older, Geoffrey C. Waldbieser et autres

Lancefield serological group C Streptococcus dysgalactiae (GCSD) is an emerging cause of fish disease worldwide, largely associated with mariculture in Asia. In the United States (US), GCSD had been a pathogen of minimal concern for fish, but recent cases indicate a putative …

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The genome assembly of the westslope cutthroat trout, Oncorhynchus lewisi, reveals interspecific chromosomal rearrangements with the rainbow trout, Oncorhynchus mykiss

Anne‐Marie Flores, Kris A. Christensen, Theresa Godin, Yniv Palti et autres

Cutthroat trout (Oncorhynchus clarkii) are popular among anglers throughout their native range along the West Coast and interior of North America. As they colonized the interior of North America, cutthroat trout diverged into several genetically distinct groups. Many of these groups are …

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Identical sequence types of Yersinia ruckeri associated with lethal disease in wild-caught invasive Blue Catfish and cultured hybrid catfish (Channel Catfish ♀ × Blue Catfish ♂) from disparate aquatic ecosystems

Christine L. Densmore, Stephen R. Reichley, Clayton D Raines, Noah Bressman et autres

OBJECTIVE: The Blue Catfish Ictalurus furcatus is commonly raised in warmwater aquaculture in the United States to produce Channel Catfish I. punctatus × Blue Catfish hybrids. It is also a prominent aquatic invasive species of concern in the mid-Atlantic region of the …

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Chromosome level genome assembly and annotation of the Swanson rainbow trout homozygous line

Ali Ali, Guangtu Gao, Rafet Al-Tobasei, Ramey C. Youngblood et autres

The genome of the Swanson doubled haploid (DH) YY male line of rainbow trout was de novo assembled using the Canu pipeline, high-coverage PacBio long-read sequence data, Bionano optical maps, and Hi-C proximity ligation sequence data, resulting in 29 major scaffolds aligning …

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Advancing genetic improvement in the omics era: status and priorities for United States aquaculture

Linnea K. Andersen, Neil F. Thompson, Jason Abernathy, Ridwan O. Ahmed et autres

BACKGROUND: The innovations of the "Omics Era" have ushered in significant advancements in genetic improvement of agriculturally important animal species through transforming genetics, genomics and breeding strategies. These advancements were often coordinated, in part, by support provided over 30 years through the …

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Development of an Automated Application System to Apply Copper Sulfate Pentahydrate to Commercial Catfish Ponds Using Precision Dry Fertilizer Application Technology

John W. Lowe, Kevin C. Wise, Bradley M. Richardson, Gary D. Chesser et autres

Highlights Modification of Gandy multipurpose fertilizer applicator to deliver granular copper sulfate. Use of the application system to control snails and other disease vectors in ponds. Accurate application of granular compounds over a specified distance and speed. Abstract. Deleterious trematode infestations in …

The genome assembly of the westslope cutthroat trout, Oncorhynchus lewisi , reveals interspecific chromosomal rearrangements with the rainbow trout

Anne‐Marie Flores, Kris A. Christensen, Theresa Godin, Yniv Palti et autres

Abstract Cutthroat trout ( Oncorhynchus clarkii ) are popular among anglers throughout their native range along the West Coast and interior of North America. As they colonized the interior of North America, cutthroat trout diverged into several genetically distinct groups. Many of …

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