Naslov
Emerging enteric parasitic diseases in farmed gilthead sea bream (Sparus aurata)

Autori
MAZZONE, ANGELICA ; CAFFARA, MONICA ; GUSTINELLI, ANDREA ; SCATURRO GIUSEPPE ; ČOLAK SLAVICA ; FIORAVANTI, MARIA LETIZIA

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstract Book of 19th international Conference on diseases of fish and shellfish / - , 2019, 325-325

Skup
19th international Conference on diseases of fish and shellfish

Mjesto i datum
Porto, Portugal, 09.09.2019. - 12.09.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Enterospora nucleophila, Cryptosporidium molnari, gilthead sea bream, Sparus aurata

Sažetak
Introduction: Enteric parasites affecting farmed gilthead sea bream (GSB) have become a serious threat for Mediterranean aquaculture in the last few years ; among these parasites Enteromyxum leei, Enterospora nucleophila and Cryptosporidium molnari are undoubtedly the most concerning ones. While the enteric myxozoan E. leei has been broadly studied, the available data on the occurrence of E. nucleophila and C. molnari infections are still scarce. Aim of this work was to improve the knowledge about these latter two parasites in Mediterranean aquaculture by carrying out an epidemiological survey in GSB farmed in Italy and Croatia. Methodology: 308 GSB of which 40 from an Italian hatchery, 174 from three cage farms located in Italy and 94 GSB from one cage farm located in Croatia were tested with qPCR and PCR to assess the presence of E. nucleophila and C. molnari. Histology was also performed on infected GSB. Results: All the examined farms tested positive for both parasites: 60% of the fish examined from hatchery were positive for E. nucleophila, while 22.5% resulted positive for C. molnari. Concerning caged fish, E. nucleophila was found in 63.2% of the GSB coming from Italian farms and in 45.7% of fish from Croatia. C. molnari was detected in 3.4% of Italian GSB and in 2.1% of the Croatian ones. Histological lesions were consistent with those already reported in literature for these enteric parasitic infections. Conclusion: This study showed a diffuse presence and a high prevalence of E. nucleophila in Italian and Croatian farmed GSB. Although at lower prevalence, also C. molnari showed to occur in farmed GSB, especially in hatchery and juveniles. Thus, further investigations are required to establish their epidemiology, transmission routes and pathogenic role in farmed GSB along its production cycle in order to assess and manage the risks arousing from these emerging enteric parasites.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA