A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Quantity and Quality of Aquaculture Enrichments Influence Disease Epidemics and Provide Ecological Alternatives to Antibiotics (2021)

Karvonen, A., Räihä, V., Klemme, I., Ashrafi, R., Hyvärinen, P., & Sundberg, L.-R. (2021). Quantity and Quality of Aquaculture Enrichments Influence Disease Epidemics and Provide Ecological Alternatives to Antibiotics. Antibiotics, 10(3), Article 335. https://doi.org/10.3390/antibiotics10030335

JYU-tekijät tai -toimittajat

Karvonen, Anssi
Räihä, Ville
Klemme, Ines
Ashrafi, Roghaieh
Sundberg, Lotta-Riina

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Karvonen, Anssi; Räihä, Ville; Klemme, Ines; Ashrafi, Roghaieh; Hyvärinen, Pekka; Sundberg, Lotta-Riina

Lehti tai sarja: Antibiotics

eISSN: 2079-6382

Julkaisuvuosi: 2021

Ilmestymispäivä: 22.03.2021

Volyymi: 10

Lehden numero: 3

Artikkelinumero: 335

Kustantaja: MDPI AG

Julkaisumaa: Sveitsi

Julkaisun kieli: englanti

DOI: https://doi.org/10.3390/antibiotics10030335

Linkki tutkimusaineistoon: https://jyx.jyu.fi/handle/123456789/74704

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/74868

Tiivistelmä

Environmental heterogeneity is a central component influencing the virulence and epidemiology of infectious diseases. The number and distribution of susceptible hosts determines disease transmission opportunities, shifting the epidemiological threshold between the spread and fadeout of a disease. Similarly, the presence and diversity of other hosts, pathogens and environmental microbes, may inhibit or accelerate an epidemic. This has important applied implications in farming environments, where high numbers of susceptible hosts are maintained in conditions of minimal environmental heterogeneity. We investigated how the quantity and quality of aquaculture enrichments (few vs. many stones; clean stones vs. stones conditioned in lake water) influenced the severity of infection of a pathogenic bacterium, Flavobacterium columnare, in salmonid fishes. We found that the conditioning of the stones significantly increased host survival in rearing tanks with few stones. A similar effect of increased host survival was also observed with a higher number of unconditioned stones. These results suggest that a simple increase in the heterogeneity of aquaculture environment can significantly reduce the impact of diseases, most likely operating through a reduction in pathogen transmission (stone quantity) and the formation of beneficial microbial communities (stone quality). This supports enriched rearing as an ecological and economic way to prevent bacterial infections with the minimal use of antimicrobials.

YSO-asiasanat: vesiviljely (kalatalous); kalataudit; bakteeritaudit; epidemiologia; mikrobit; mikrobisto; biofilmit; lohi; taimen

Vapaat asiasanat: aquaculture; biofilm; disease epidemiology; enriched rearing; environmental microbes; microbial community; Salmo salar; Salmo trutta

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