Reductions in Susceptibility of Channel Catfish,<i> Ictalurus punctatus</i>, to Enteric Septicemia of Catfish through Two Generations of Selection

Bilodeau‐Bourgeois, A. Lelania; Bosworth, Brian G.; Wolters, William R.

doi:10.1111/j.1749-7345.2007.00117.x

Cited by 9 publications

(8 citation statements)

References 19 publications

(20 reference statements)

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“…Family A was randomly chosen from approximately 125 spawns originating from broodstock that had not been previously selected for resistance to E. ictaluri; thus, family A served as an unselected control family. Families B, C, and D were offspring of fish that had been selectively bred for resistance to E. ictaluri, faster growth, and higher fillet yield for two generations (Bilodeau-Bourgeois et al 2007). Among the fish from the study by Bilodeau-Bourgeois et al (2007), 10 families exhibiting mortality of less than 10% after E. ictaluri challenge were kept and then crossed to produce families B, C, and D (among others); thus, the three families were the product of one additional generation of selective breeding for a single trait: resistance to E. ictaluri.…”

Section: Methodsmentioning

confidence: 99%

“…The goal of this research is to determine whether resistance to E. ictaluri is a heritable trait and to further evaluate the offspring for improved resistance to this bacterial pathogen. Progress has been made in producing families with increased resistance to E. ictaluri (Bilodeau-Bourgeois et al 2007;Peterson et al 2008). Bilodeau-Bourgeois et al (2007) demonstrated a 10.3% improvement in resistance after two generations of multitrait selection for greater resistance to E. ictaluri, faster growth, and greater fillet yield.…”

mentioning

confidence: 99%

“…The improvement in channel catfish resistance to E. ictaluri, as demonstrated by Bilodeau-Bourgeois et al (2007), is promising; however, it is not known whether improvement in resistance to E. ictaluri will also result in resistance to other bacterial pathogens, such as F. columnare. Research has suggested a positive genetic correlation between levels of fish resistance to different bacterial pathogens; that is, selection for resistance to one bacterial pathogen results in resistance to other bacterial pathogens (Gjedrem and Gjøen 1995;Gjøen et al 1997;Henryon et al 2005).…”

mentioning

confidence: 99%

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Spleen Index and Mannose‐Binding Lectin Levels in Four Channel Catfish Families Exhibiting Different Susceptibilities to Flavobacterium columnare and Edwardsiella ictaluri

LaFrentz

Shoemaker

Booth³

et al. 2012

J Aqua Anim Hlth

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Edwardsiella ictaluri and Flavobacterium columnare are two bacterial pathogens that affect channel catfish Ictalurus punctatus aquaculture. At the Catfish Genetics Research Unit (U.S. Department of Agriculture, Agricultural Research Service), some progress has been made in selectively breeding for resistance to E. ictaluri; however, the susceptibility of these families to F. columnare is not known. Our objectives were to obtain baseline information on the susceptibility of channel catfish families (maintained as part of the selective breeding program) to E. ictaluri and F. columnare and to determine whether the spleen index and plasma levels of mannose-binding lectin (MBL) are predictive indicators of susceptibility to these pathogens. Four channel catfish families were used: family A was randomly chosen from spawns of fish that were not selectively bred for resistance; families B, C, and D were obtained after selection for resistance to E. ictaluri. All four families were immersion challenged with both bacterial pathogens; the spleen index and plasma MBL levels of unchallenged fish from each family were determined. Mean cumulative percent mortality (CPM) after E. ictaluri challenge ranged from 4% to 33% among families. Families A and B were more susceptible to F. columnare (mean CPM of three independent challenges = 95% and 93%) than families C and D (45% and 48%), demonstrating that there is genetic variation in resistance to F. columnare. Spleen index values and MBL levels were not significantly different, indicating that these metrics are not predictive indicators of F. columnare or E. ictaluri susceptibility in the four tested families. Interestingly, the two families that exhibited the highest CPM after F. columnare challenges had the lowest CPM after E. ictaluri challenge. Further research on larger numbers of families is needed to determine whether there is any genetic correlation between resistance to E. ictaluri and resistance to F. columnare.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Spleen Index and Mannose‐Binding Lectin Levels in Four Channel Catfish Families Exhibiting Different Susceptibilities to Flavobacterium columnare and Edwardsiella ictaluri

LaFrentz

Shoemaker

Booth³

et al. 2012

J Aqua Anim Hlth

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“…In two generations of family selection, resistance to ESC was improved by 10.3% in the newly selected strain, USDA303 (Bilodeau‐Bourgeois et al . ).…”

Section: Genetic Approaches To Improve Disease Resistancementioning

confidence: 97%

“…Research was conducted on NWAC103 channel catfish strain (Wolters et al 2002) to incorporate multiple economically important traits such as growth, carcass yield and resistance to ESC using multitrait selection. In two generations of family selection, resistance to ESC was improved by 10.3% in the newly selected strain, USDA303 (Bilodeau-Bourgeois et al 2007).…”

Section: Selectionmentioning

confidence: 99%

Disease reduction in aquaculture with genetic and genomic technology: current and future approaches

Elaswad

Dunham

2017

Reviews in Aquaculture

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Reduction in the occurrence and severity of disease in aquaculture would improve the productivity, profitability, efficiency and welfare of aquacultural fish. Genetic approaches that have been successfully implemented in aquaculture to enhance disease resistance and reduce disease incidence include classical selection, genetic marker‐assisted selection, intraspecific crossbreeding, interspecific hybridization and transgenesis. The rate and speed of improvement in disease resistance varies from one genetic enhancement programme to another. Genome editing with zinc finger nucleases (ZFNs), transcription activator‐like effector nucleases (TALENs) and clustered regularly interspaced short palindromic repeats (CRISPRs)‐CRISPR‐associated protein 9 (Cas9) opens avenues for targeted genome modifications. This technology can be applied in aquaculture to manipulate disease‐resistance genes by means of gene knock‐in, gene knockout and regulation of gene expression. The maximum rate of improvement can be achieved by combining different genetic enhancement programmes. Here, we present a review for the current and future prospect of disease reduction in aquaculture with genetic and genomic technologies.

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Principles of Health Maintenance

Plumb

Hanson

2010

Health Maintenance and Principal Microbial Diseases of Cultured Fishes

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Reductions in Susceptibility of Channel Catfish, Ictalurus punctatus, to Enteric Septicemia of Catfish through Two Generations of Selection

Cited by 9 publications

References 19 publications

Spleen Index and Mannose‐Binding Lectin Levels in Four Channel Catfish Families Exhibiting Different Susceptibilities to Flavobacterium columnare and Edwardsiella ictaluri

Spleen Index and Mannose‐Binding Lectin Levels in Four Channel Catfish Families Exhibiting Different Susceptibilities to Flavobacterium columnare and Edwardsiella ictaluri

Disease reduction in aquaculture with genetic and genomic technology: current and future approaches

Principles of Health Maintenance

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