Spawning behaviour of Atlantic bluefin tuna (Thunnus thynnus) was investigated using electronic satellite tags deployed in the western Mediterranean spawning ground, around the Balearic Islands (years 2009-2011). All the fish were tagged underwater and released within schools. In general, the fish tagged in the same year/school displayed common migratory trends. Following extended residency aro...

This study reports on the accumulation of polybrominated diphenyl ethers (PBDEs) and polychlorobiphenyls (PCBs) in the muscle tissue of 11 species of fish from the Ionian Sea (Western Mediterranean). The results are consistent with previous studies that have reported now-generalized contamination by PCBs of the Mediterranean marine environment, as well as widespread diffusion of emerging contam...

S Pelagic deep longline was widely used in targeting tunas of high economic values with other fish species caught incidentally as bycatch. Identifying characteristics of vertical distribution of fish species that interact with longline can provide critical information needed for the development of effective measures to mitigate bycatch species and is essential for ecosystem conservation. Much w...

Abstract Climate-driven redistribution of tuna threatens to disrupt the economies Pacific Small Island Developing States (SIDS) and sustainable management world’s largest fishery. Here we show that by 2050, under a high greenhouse gas emissions scenario (RCP 8.5), total biomass three species in waters ten SIDS could decline an average 13% (range = −5% −20%) due greater proportion fish occurring...

This preliminary study used DNA metabarcoding to test whether the stomach content and gut microbiome of tuna could be a viable near real-time monitoring tool for detecting composition change in oceanic ecosystems. The skipjack ( Katsuwonus pelamis , n=55) yellowfin Thunnus albacares n=46) captured Pacific Ocean during El Niño Southern Oscillation events (ENSO) between 2015-2017 were examined by...

BACKGROUND Fish is a potent food allergen. The aim of this work is to demonstrate that dogfish, a small shark, has low allergenicity in both its clinical tolerance as well as its molecular structure. METHODS We present a study of 34 paediatric patients with IgE-mediated immediate reactions after eating fish. The diagnosis of several fish allergies was demonstrated by skin prick techniques and...

Cardiovascular dynamics of tuna have been investigated by recording blood pressures and flows in the central circulation of both anaesthetised and swimming individuals. In anaesthetised fish (N=5), heart rate averaged 1 1 2 S l beats min-l (mean 2 s.E.) and stroke volume was 0.67M.24mlkg-' when normoxic water flowed over the gills. Ventricular diastolic pressure was zero until atrial contractio...

Er, B., B. DEmirhan, S. Y. BaS, G. YEntur and a. B. OktEm, 2014. Determination of histamine levels in canned tuna fish. Bulg. J. Agric. Sci., 20: 834-838 the presence of biogenic amines in foods is a chemical indication of food spoilage. therefore, monitoring of biogenic amines levels in food and food products is important. In this study, total number of 80 canned tuna fish samples of four diff...

Northern bluefin tuna (Thunnus thynnus) were caught by purse seine boats and brought to a farm for a rearing cycle of 1.5 years. Mortalities occurred in the first weeks of acclimatization at the facility. Parasitological examination revealed plerocercoids of the cestode Hepatoxylon trichiuri embedded in the stomach mucosa. The larvae were found in 28.4% of the fish and the mean abundance was 3....