TY - JOUR
T1 - Evaluation of potential transfer of the pathogen Saprolegnia parasitica between farmed salmonids and wild fish
AU - Tedesco, Perla
AU - Saraiva, Marcia
AU - Sandoval-Sierra, Jose Vladimir
AU - Fioravanti, Maria Letizia
AU - Morandi, Benedetto
AU - Dieguez-Uribeondo, Javier
AU - Van West, Pieter
AU - Galuppi, Roberta
N1 - Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 634429. This publication reflects the views only of the author, and the European Commission cannot be held responsible for any use, which may be made of the information contained therein.
Data Availability Statement: The data presented in this study are available on request from the corresponding author.
Acknowledgments: The authors would like to thank the fish farmers/staff, veterinarians, biologists and local authorities who collaborated in the sample collection.
PY - 2021/7/22
Y1 - 2021/7/22
N2 - Saprolegnia infections are among the main parasitic diseases affecting farmed salmonids. The distribution and potential transfer of Saprolegnia spp. between farms and the natural environment has been scarcely investigated. Therefore, this work aimed to study the diversity and abundance of oomycete species in salmonid farms, tributary water, and effluent water systems. Four trout farms in Italy and two Atlantic salmon farms in Scotland were considered. In Italian farms, 532 isolates of oomycetes were obtained from fish and water, at upstream, inside, and downstream the farms. In Scottish farms, 201 oomycetes isolates were obtained from water outside the farm and from fish and water inside the farming units. Isolates were identified to the species level through amplification and sequencing of the ITS rDNA region. In Italy, S. parasitica was significantly more present in farmed than in wild fish, while in water it was more frequently isolated from the wild, particularly in effluent systems, not associated with more frequent isolation of S. parasitica in wild fish downstream the farm. In Scotland, S. parasitica was the most prevalent species isolated from fish, while isolates from water were mostly Pythium spp. with few S. parasitica isolates from upstream and downstream the farms.
AB - Saprolegnia infections are among the main parasitic diseases affecting farmed salmonids. The distribution and potential transfer of Saprolegnia spp. between farms and the natural environment has been scarcely investigated. Therefore, this work aimed to study the diversity and abundance of oomycete species in salmonid farms, tributary water, and effluent water systems. Four trout farms in Italy and two Atlantic salmon farms in Scotland were considered. In Italian farms, 532 isolates of oomycetes were obtained from fish and water, at upstream, inside, and downstream the farms. In Scottish farms, 201 oomycetes isolates were obtained from water outside the farm and from fish and water inside the farming units. Isolates were identified to the species level through amplification and sequencing of the ITS rDNA region. In Italy, S. parasitica was significantly more present in farmed than in wild fish, while in water it was more frequently isolated from the wild, particularly in effluent systems, not associated with more frequent isolation of S. parasitica in wild fish downstream the farm. In Scotland, S. parasitica was the most prevalent species isolated from fish, while isolates from water were mostly Pythium spp. with few S. parasitica isolates from upstream and downstream the farms.
KW - Italy
KW - Oncorhynchus mykiss
KW - Salmo marmoratus
KW - Salmo salar
KW - Salmo trutta
KW - Salmonid farms
KW - Saprolegnia parasitica
KW - Scotland
UR - http://www.scopus.com/inward/record.url?scp=85111623858&partnerID=8YFLogxK
U2 - 10.3390/pathogens10080926
DO - 10.3390/pathogens10080926
M3 - Article
AN - SCOPUS:85111623858
VL - 10
JO - Pathogens
JF - Pathogens
SN - 2076-0817
IS - 8
M1 - 926
ER -
