Naslov
Looking for the happy cage-reared tuna

Autori
Mladineo, Ivona ; Block, A. Barbara

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

Izvornik
14th EAFP International Conference Diseases of Fish and Shellfish Abstract Book / - Prag : Halama Publishing hous, 2009

ISBN
978-8087082-13-3

Skup
14th EAFP International Conference Diseases of Fish and Shellfish

Mjesto i datum
Prag, Češka Republika, 14.09.2009. - 19.09.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
tuna; stress; biomarkers

Sažetak
Tunas represent the most valuable fisheries and finfish aquaculture product currently recognized, with more than a half of the total world production concentrated in the Mediterranean Sea. The expansion of bluefin tuna production through aquaculture largely depends upon our ability to maintain captive populations of bluefin tunas for rearing, reproduction and fingerling grow out. To improve the capacity to keep bluefin, reduction of the health risks and environmental influences will have to be defined. Molecular tools for characterizing the captive population health status and its physiology as the response to abiotic factors must be established in the captive environment, bur prior to that we need to detect and quantify appropriate parameters, indicative of fish response. In our previous study we determined the expression of target genes in Pacific bluefin tuna experimentally exposed to chronic warm and cold temperatures. The genes of interest were chosen as representatives of groups that are regularly modified in poikilotherm fish exposed to temperature shock: chaperon molecules (heat shock protein 70 or Hsp70) ; proteins engaged in active transport (Na+/K+ ATP-ase) ; oxygen-dependent genes (hypoxia-inducible factor-1α or HIF-1α ) ; and cytokines (interleukin-1β or IL-1β , tumor necrosis factor-α or TNF-α ). Based on the results we started the construction of tuna-specific “ mini-microchip” that would have a range of genes known to be useful biomarkers for general health status and/ or environmental stress, hoping that this would help in early signaling of health or environmental disbalance in rearing cages.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA