TY - JOUR
T1 - Physiological responses of reared sea bream (Sparus aurata Linnaeus, 1758) to an Amyloodinium ocellatum outbreak
AU - Moreira, M.
AU - Schrama, D.
AU - Soares, F.
AU - Wulff, T.
AU - Pousão-Ferreira, P.
AU - Rodrigues, P.
N1 - Funding Information:
This work has been financially supported by project DIVERSIAQUA (MAR2020, Portugal). M Moreira was supported by Funda??o para a Ci?ncia e Tecnologia (grant number SFRH/BD/118601/2016).
Publisher Copyright:
© 2017 John Wiley & Sons Ltd
PY - 2017/11
Y1 - 2017/11
N2 - Amyloodiniosis represents a major bottleneck for semi-intensive aquaculture production in Southern Europe, causing extremely high mortalities. Amyloodinium ocellatum is a parasitic dinoflagellate that can infest almost all fish, crustacean and bivalves that live within its ecological range. Fish mortalities are usually attributed to anoxia, associated with serious gill hyperplasia, inflammation, haemorrhage and necrosis in heavy infestations; or with osmoregulatory impairment and secondary microbial infections due to severe epithelial damage in mild infestation. However, physiological information about the host responses to A. ocellatum infestation is scarce. In this work, we analysed the proteome of gilthead sea bream (Sparus aurata) plasma and relate it with haematological and immunological indicators, in order to enlighten the different physiological responses when exposed to an A. ocellatum outbreak. Using 2D-DIGE, immunological and haematological analysis and in response to the A. ocellatum contamination we have identified several proteins associated with acute-phase response, inflammation, lipid transport, homoeostasis, and osmoregulation, wound healing, neoplasia and iron transport. Overall, this preliminary study revealed that amyloodiniosis affects some fish functional pathways as revealed by the changes in the plasma proteome of S. aurata, and that the innate immunological system is not activated in the presence of the parasite.
AB - Amyloodiniosis represents a major bottleneck for semi-intensive aquaculture production in Southern Europe, causing extremely high mortalities. Amyloodinium ocellatum is a parasitic dinoflagellate that can infest almost all fish, crustacean and bivalves that live within its ecological range. Fish mortalities are usually attributed to anoxia, associated with serious gill hyperplasia, inflammation, haemorrhage and necrosis in heavy infestations; or with osmoregulatory impairment and secondary microbial infections due to severe epithelial damage in mild infestation. However, physiological information about the host responses to A. ocellatum infestation is scarce. In this work, we analysed the proteome of gilthead sea bream (Sparus aurata) plasma and relate it with haematological and immunological indicators, in order to enlighten the different physiological responses when exposed to an A. ocellatum outbreak. Using 2D-DIGE, immunological and haematological analysis and in response to the A. ocellatum contamination we have identified several proteins associated with acute-phase response, inflammation, lipid transport, homoeostasis, and osmoregulation, wound healing, neoplasia and iron transport. Overall, this preliminary study revealed that amyloodiniosis affects some fish functional pathways as revealed by the changes in the plasma proteome of S. aurata, and that the innate immunological system is not activated in the presence of the parasite.
KW - Amyloodinium ocellatum
KW - Gilthead sea bream
KW - Physiological responses
KW - Proteomics
UR - http://www.scopus.com/inward/record.url?scp=85018425979&partnerID=8YFLogxK
U2 - 10.1111/jfd.12623
DO - 10.1111/jfd.12623
M3 - Article
C2 - 28449283
AN - SCOPUS:85018425979
SN - 0140-7775
VL - 40
SP - 1545
EP - 1560
JO - Journal of Fish Diseases
JF - Journal of Fish Diseases
IS - 11
ER -