A Summer Mortality Outbreak of Lactococcosis by Lactococcus garvieae in a Raceway System Affecting Farmed Rainbow Trout (Oncorhynchus mykiss) and Brook Trout (Salvelinus fontinalis)

被引:19
|
作者
Pastorino, Paolo [1 ]
Vela Alonso, Ana Isabel [2 ]
Colussi, Silvia [1 ]
Cavazza, Giulia [1 ]
Menconi, Vasco [1 ]
Mugetti, Davide [1 ]
Righetti, Marzia [1 ]
Barbero, Raffaella [3 ]
Zuccaro, Gaetano [1 ]
Fernandez-Garayzabal, Jose Francisco [2 ]
Dondo, Alessandro [1 ]
Acutis, Pier Luigi [1 ]
Prearo, Marino [1 ]
机构
[1] Ist Zooprofilatt Sperimentale Piemonte Liguria &, Via Bologna 148, I-10154 Turin, Italy
[2] Univ Complutense Madrid, Ctr Vigilancia Sanitaria Vet VISAVET, Ave Puerta de Hierro, E-28040 Madrid, Spain
[3] Azienda Sanit Locale Biella, Via Don Sturzo 20, I-13900 Biella, Italy
来源
ANIMALS | 2019年 / 9卷 / 12期
关键词
aquaculture; fish diseases; outbreak; brook trout; Lactococcus garvieae; ENTEROCOCCUS-SERIOLICIDA; VAGOCOCCUS-SALMONINARUM; SP-NOV; FISH; STREPTOCOCCOSIS; INFECTIONS; PATHOGEN; STRAINS; SYNONYM; MULLET;
D O I
10.3390/ani9121043
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Simple SummaryLactococcus garvieae is the etiological agent of lactococcosis, a bacterial disease affecting many species of fish and causing major economic losses in aquaculture. In this study we described, for the first time, the isolation of L. garvieae in brook trout farmed in northwestern Italy by performing a molecular and epidemiological characterization. Results confirmed water as vehicle of infection, favoring the transmission of the pathogen between rainbow trout farmed in the upstream compartments of a raceways system and the brook trout located in downstream tanks. Abstract Lactococcosis is a fish disease of major concern in Mediterranean countries caused by Lactococcus garvieae. The most susceptible species is the rainbow trout (Oncorhynchus mykiss), suffering acute disease associated with elevated mortalities compared to other fish species. References reported that other salmonids are also susceptible to the disease, but no mortality outbreak has been described to date. The aim of this study was to present a mortality outbreak that occurred in brook trout (Salvelinus fontinalis) farmed in northwestern Italy during the summer of 2018. Fish exhibited clinical signs, such as exophthalmos, diffused hemorrhages localized in the ocular zone, hemorrhagic enteritis, and enlarged spleen. L. garvieae was isolated in all fish. Molecular and epidemiological characterization of the isolates, through Pulsed Field Gel Electrophoresis (PFGE), confirmed the initial hypothesis of water as vehicle of infection favoring transmission between rainbow trout farmed in upstream compartments and brook trout located in downstream tanks. Moreover, several environmental conditions affected and promoted the outbreak, among them the high-water temperature, which probably induced a physiological stress in brook trout, being way above the optimal temperature for this species, increasing the susceptibility to infection.
引用
收藏
页数:7
相关论文
共 50 条
  • [41] Serological, virological and histopathological study of an outbreak of sleeping disease in farmed rainbow trout Oncorhynchus mykiss
    Graham, D. A.
    Jewhurst, H. L.
    McLoughlin, M. F.
    Branson, E. J.
    McKenzie, K.
    Rowley, H. M.
    Todd, D.
    DISEASES OF AQUATIC ORGANISMS, 2007, 74 (03) : 191 - 197
  • [42] Effectiveness of bivalent vaccines against Aeromonas hydrophila and Lactococcus garvieae infections in rainbow trout Oncorhynchus mykiss (Walbaum)
    Bastardo, Asmine
    Ravelo, Carmen
    Castro, Nuria
    Calheiros, Jose
    Romalde, Jesus L.
    FISH & SHELLFISH IMMUNOLOGY, 2012, 32 (05) : 756 - 761
  • [43] Detection of virulence factors of South African Lactococcus garvieae isolated from rainbow trout Oncorhynchus mykiss (Walbaum)
    Meyburgh, Cornelia M.
    Bragg, Robert R.
    Boucher, Charlotte E.
    ONDERSTEPOORT JOURNAL OF VETERINARY RESEARCH, 2018, 85 (01)
  • [44] Experimental Lactococcus garvieae infection in rainbow trout, Oncorhynchus mykiss, Walbaum 1792: a comparative histopathological and immunohistochemical study
    Avci, H.
    Birincioglu, S. S.
    Tanrikul, T. T.
    Epikmen, E. T.
    Metin, N.
    Avsever, M. L.
    JOURNAL OF FISH DISEASES, 2014, 37 (05) : 481 - 495
  • [45] Divergences of Biochemical Features of Three Reared Trouts; Brook Trout (Salvelinus fontinalis, Mitchill 1814), Rainbow Trout (Oncorhynchus mykiss Walbaum, 1972), and Black Sea Trout (Salmo trutta labrax Pallas 1811)
    Ozyilmaz, Ayse
    Ocak, Kadriye
    Demirci, Sevil
    KSU TARIM VE DOGA DERGISI-KSU JOURNAL OF AGRICULTURE AND NATURE, 2023, 26 (01): : 192 - 200
  • [46] Protec™ improves innate immune response and specific antibody response against Lactococcus garvieae in rainbow trout (Oncorhynchus mykiss)
    Bulfon, Chiara
    Pacorig, Valentina
    Sarti, Massimo
    Luzzana, Umberto
    Galeotti, Marco
    Volpatti, Donatella
    VETERINARY IMMUNOLOGY AND IMMUNOPATHOLOGY, 2019, 213
  • [47] High efficacy and economical procedure of oral vaccination against Lactococcus garvieae/Streptococcus iniae in rainbow trout (Oncorhynchus mykiss)
    Halimi, Mostafa
    Alishahi, Mojtaba
    Abbaspour, Mohammad Reza
    Ghorbanpoor, Masoud
    Tabandeh, Mohammad Reza
    FISH & SHELLFISH IMMUNOLOGY, 2020, 99 : 505 - 513
  • [48] Immune profiling of rainbow trout (Oncorhynchus mykiss) exposed to Lactococcus garvieae: Evidence in asymptomatic versus symptomatic or vaccinated fish
    Khalil, Sarker Mohammed Ibrahim
    Bulfon, Chiara
    Galeotti, Marco
    Acutis, Pier Luigi
    Altinok, Ilhan
    Kotzamanidis, Charalampos
    Vela, Ana Isabel
    Fariano, Lucio
    Prearo, Marino
    Colussi, Silvia
    Volpatti, Donatella
    JOURNAL OF FISH DISEASES, 2023, 46 (07) : 731 - 741
  • [49] Therapeutic effects of beard lichen, Usnea barbata extract against Lactococcus garvieae infection in rainbow trout (Oncorhynchus mykiss)
    Bilen, Soner
    Sirtiyah, Abdulwahid Mohammed Almandi
    Terzi, Ertugrul
    FISH & SHELLFISH IMMUNOLOGY, 2019, 87 : 401 - 409
  • [50] Minimum inhibitory concentrations of erythromycin in Lactococcus garvieae strains isolated from cultured rainbow trout (Oncorhynchus mykiss) in Spain
    Vendrell, D.
    Serarols, L.
    Balcazar, J. L.
    de Blas, I.
    Ruiz-Zarzuela, I.
    Muzquiz, J. L.
    BULLETIN OF THE EUROPEAN ASSOCIATION OF FISH PATHOLOGISTS, 2008, 28 (03): : 125 - 128