RT Journal Article
T1 Isolation and Genetic Characterization of Streptococcus iniae Virulence Factors in Adriatic Sturgeon (Acipenser naccarii)
A1 Colussi, Silvia
A1 Pastorino, Paolo
A1 Mugetti, Davide
A1 Antuofermo, Elisabetta
A1 Sciuto, Simona
A1 Esposito, Giuseppe
A1 Polinas, Marta
A1 Tomasoni, Mattia
A1 Burrai, Giovanni Pietro
A1 Fernández-Garayzábal Fernández, José Francisco
A1 Acutis, Pier Luigi
A1 Pedron, Claudio
A1 Prearo, Marino
AB The first case of infection of Streptococcus iniae in Adriatic sturgeon (Acipenser naccarii) was recently reported in a raceway system located in Northern Italy. A second episode of infection in sturgeons with absence of mortality and evident clinical signs, was registered in November 2020 in the same farm and is reported in this study. Histopathological changes observed in infected organs are described. The strains isolated in the two episodes were compared using molecular analysis based on PCR, phylogeny and virulence factors analysis. Not all the major virulence factors were detected for the two strains; in particular the strains 78697, isolated in November, lacks cpsD, compared to the strains 64844, isolated in September. Moreover, genetic variations were reported for lctO and pmg genes. These findings let us hypothesize a different virulence of the strains in accordance with clinical findings related to the sturgeons.
PB MPDI
SN 2076-2607
YR 2022
FD 2022-04-22
LK https://hdl.handle.net/20.500.14352/71823
UL https://hdl.handle.net/20.500.14352/71823
LA eng
DS Docta Complutense
RD 8 abr 2025