Naslov
An Overview of Captice Tuna Diseases

Autori
Mladineo, Ivona

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

Izvornik
Proceedings of the Annual Meeting of the Fish health section - of the American fisheries society (FHS-AFS) 2008 / - , 2008, 82-83

Skup
Fish health section - American fisheries society 2008 annual meeting

Mjesto i datum
Charlottetown, Kanada, 09.07.2008. - 12.07.2008

Vrsta sudjelovanja
Plenarno

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Tuna; diseases; Mediterranean

Sažetak
Tuna, Thunnus spp. (Linnaeus, 1758), is the most valuable finfish aquaculture product currently recognized around the world, with two main methods of farming presently employed. The most common is the fattening process where fish are kept in captivity for 6-10 months ; a method in wide use in the Mediterranean, Australia, Mexico and Japan. In the Adriatic Sea however, smaller specimens are caught and reared for a longer period of time (up to 2 years), in order to gain over 35 kg of weight for marketable sale. Differences in the rearing technology are implicated in the isolation of different pathogen groups, as well as the diseases’ etiology. The largest groups of pathogens reported in wild tuna consist of parasites usually acquired during migration that generally show no tendency for intensive proliferation and thus do not represent a major health risk. A comparison of the health of captive southern bluefin tuna (T. maccoyii) relative to Mediterranean bluefin tuna shows differences unique to each region and/ or species, even though a large proportion of the pathogens are shared. Bacterial diseases so far contracted (Vibrio, Aeromonas, Photobacterium spp.) are strongly linked to poor husbandry measures along with mechanical trauma, sharp changes of environmental factors, and diet. Two enzootic outbreaks of viral diseases were previously reported (Iridovirus, Nodavirus) in Pacific bluefin tuna (T. orientalis), where the propagation of virus from other fish species kept in neighboring cages was suspected. Today, usually a low percent of mortalities in connection to pathogen outbreak is observed in captive tuna and the majority of fish remain in good health.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA