Suppression of Saprolegnia infections in rainbow trout (Oncorhynchus mykiss) eggs using protective bacteria and ultraviolet irradiation of the hatchery water
| Autor: | Jouni Heikkinen, Marja Tiirola, Satu Maarit Mustonen, Päivi Eskelinen, Dina Navia-Paldanius, Atte von Wright |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Hypha Aquatic Science Biology Microbiology 03 medical and health sciences eggs Colonization Incubation saprolegnia infection Pseudomonas ta1183 UV irradiation 04 agricultural and veterinary sciences Saprolegnia biology.organism_classification rainbow trout Hatchery protective culture pseudomonas 030104 developmental biology 040102 fisheries 0401 agriculture forestry and fisheries ta1181 Rainbow trout Bacteria |
| Zdroj: | Aquaculture Research. 47(3):925-939 |
| ISSN: | 1355-557X |
| DOI: | 10.1111/are.12551 |
| Popis: | Since formalin is widely used in prevention of Sapro- legnia infections in salmonid fish hatcheries, there is a need for more environmentally safe treatment methods. Therefore, we screened 360 bacterial iso- lates against their ability to antagonize the growth of Saprolegnia parasitica hyphae in vitro, and best strains were selected according to their antagonistic proper- ties and colonization capability on rainbow trout egg surface. Protective bacterial cultures of Pseudomonas sp. M162, Pseudomonas sp. M174 and Janthinobacte- rium M169 were tested for prevention of Saprolegnia sp. infections during incubation trials of rainbow trout (Oncorhynchus mykiss )e ggs with UV irradiated (400 mWs cm � 2 ) and non-treated inlet water. UV irradiation of inlet water significantly decreased mor- tality during the incubation. Lowest mortalities were observed in protective culture treated groups incu- bated with UV-irradiated inlet water. UV irradiation increased the dominance of the main bacterial colo- nizers and variation in the bacterial species diversity between the experimental units. |
| Databáze: | OpenAIRE |
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