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• W2891435462 abstract "DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 131:121-131 (2018) - DOI: https://doi.org/10.3354/dao03286 Pseudocapillaria tomentosa in laboratory zebrafish Danio rerio: patterns of infection and dose response Michael L. Kent1,2,*, Christopher A. Gaulke1, Virginia Watral1, Thomas J. Sharpton1,3 1Department of Microbiology, 2Department of Biomedical Sciences, and 3Department of Statistics, Oregon State University, Corvallis, OR 97331, USA *Corresponding author: michael.kent@oregonstate.edu ABSTRACT: Parasites in wild populations almost always exhibit aggregation (overdispersion), in which relatively few hosts are infected with high numbers of the parasites. This pattern of infection has also been observed in laboratory studies, where many of the sources of natural variation are removed. Pseudocapillaria tomentosa (Nematoda) is common in zebrafish (Danio rerio) facilities. We describe here patterns of infections in zebrafish experimentally infected with larvated P. tomentosa eggs in various trials with defined numbers of eggs. One trial with eggs delivered in a gelatin diet is also included. Fish were exposed at 25, 75, and 200 eggs fish-1, and the minimal infectious dose was estimated to be 1.5 eggs fish-1. The ID50 (50% infective dose) was calculated to be 17.5 eggs fish-1. We also included data from a trial and 2 previously published experiments with undefined doses in which zebrafish were exposed to infectious water and detritus from a tank that previously contained infected fish. All doses resulted in a high prevalence of infection (>70%), except at the 25 eggs fish-1 dose, where the prevalence was 43-46%. Mean abundance of worms corresponded to dose, from 0.57 worms fish-1 at 25 eggs fish-1 to 7 worms fish-1 at 200 eggs fish-1. Variance to mean ratios (V/M) and the k parameters showed aggregation across the 8 separate trials, including the gelatin diet. Aggregation increased with increased parasite abundance. Given the consistent observation of aggregation across our experiments, the zebrafish/P. tomentosa system provides a potentially robust, high-throughput model to investigate factors that influence differences in host susceptibility within defined populations. KEY WORDS: Zebrafish · Nematoda · Pseudocapillaria · Parasitism · Experimental infection Full text in pdf format PreviousNextCite this article as: Kent ML, Gaulke CA, Watral V, Sharpton TJ (2018) Pseudocapillaria tomentosa in laboratory zebrafish Danio rerio: patterns of infection and dose response. Dis Aquat Org 131:121-131. https://doi.org/10.3354/dao03286 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 131, No. 2. Online publication date: November 06, 2018 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2018 Inter-Research." @default.
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• W2891435462 date "2018-11-06" @default.
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• W2891435462 title "Pseudocapillaria tomentosa in laboratory zebrafish Danio rerio: patterns of infection and dose response" @default.
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• W2891435462 doi "https://doi.org/10.3354/dao03286" @default.
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