Radiological risks assessment due to natural radioactivity in Mediterranean sea fishes

2021 ◽  
Vol 17 ◽  
Author(s):  
F. Caridi ◽  
G. Belmusto
Keyword(s):  
Mediterranean Sea ◽  
Sparus Aurata ◽  
Dicentrarchus Labrax ◽  
Sardina Pilchardus ◽  
Cancer Risks ◽  
Merluccius Merluccius ◽  
Solea Solea ◽  
Mullus Surmuletus ◽  
Thunnus Alalunga ◽  
Belone Belone

Background and Objectives: In this article a comprehensive study was carried out for the determination of natural radioactivity in Mediterranean sea fishes and the evaluation of radiological health risks due to their ingestion. All analyzed samples came from the Calabria region, southern Italy, and, in particular, from the district of Reggio Calabria. Method: A total of seventy representative samples, five for each investigated species (Sardina Pilchardus, Mugil Cephalus, Scomber Scombrus, Sparus Aurata, Dicentrarchus Labrax, Tonnus Thynnus, Thunnus Alalunga, Xiphaias Gladius, Pagellus Erythrinnus, Engraulis Encrasicholus, Belone Belone, Solea Solea, Merluccius Merluccius, Mullus Surmuletus) were analyzed through HPGe gamma spectrometry. The evaluation of dose levels and lifetime cancer risks for adult members of the population due to the fishes ingestion was also performed. Results: The specific activity of 40K was investigated and its mean value was found to be: (157 ± 17) for Sardina Pilchardus, (138 ± 14) for Mugil Cephalus, (118 ± 13) for Scomber Scombrus, (128 ± 14) for Sparus Aurata, (146 ± 17) for Dicentrarchus Labrax, (93 ± 11) for Tonnus Thynnus, (137 ± 15) for Thunnus Alalunga, (98 ± 10) for Xiphaias Gladius, (105 ± 12) for Pagellus Erythrinnus, (132 ± 14) for Engraulis Encrasicholus, (113 ± 12) for Belone Belone, (34 ± 5) for Solea Solea, (76 ± 9) for Merluccius Merluccius and (96 ± 11) for Mullus Surmuletus, respectively. Conclusions: The committed effective dose and the lifetime cancer risks for adult members of the population due to the consumption of the investigated samples are lower than the average world value, the maximum acceptable level and the allowed range, respectively. It can then be concluded that the Mediterranean sea fishes consumed in the study area pose no significant health risks to the population from a radiological point of view.

scholarly journals Helminth parasites of digestive tract of some teleost fish caught in the Dardanelles at Çanakkale, Turkey

2007 ◽  
Vol 44 (4) ◽  
pp. 217-221 ◽  
Author(s):  
R. Keser ◽  
R. Bray ◽  
M. Oguz ◽  
S. Çelen ◽  
S. Erdoğan ◽  
...  
Keyword(s):  
Sparus Aurata ◽  
Anisakis Simplex ◽  
Helminth Parasites ◽  
Trachurus Trachurus ◽  
Pomatomus Saltatrix ◽  
Liza Saliens ◽  
Solea Solea ◽  
Mediterranean And Black Seas ◽  
Belone Belone ◽  
Hysterothylacium Aduncum

AbstractIn this study the following parasites were found in fishes from the Dardanelles at Çanakkale: Cestoda: Bothriocephalus scorpii, Grillotia sp. and Scolex pleuronectis in Solea solea; Digenea: Ectenurus lepidus, Prodistomum polonii and Monascus filiformis in Trachurus trachurus, Hemiuridae metacercaria in S. solea, Lecithocladium excisum in Scomber scombrus, Lecithostaphylus retroflexus in Belone belone, Opechona bacillaris in Pomatomus saltatrix and S. scombrus and Schikhobalotrema sparisomae in Liza saliens; Nematoda: Hysterothylacium aduncum in T. trachurus, S. solea, Sparus aurata, P. saltatrix, L. saliens and Engraulis encrasicolus and Anisakis simplex in S. scombrus; Acanthocephala: Neoechinorynchus agilıs in L. saliens. No parasites were recovered from Sardinella aurita. Most of these species are well known in both the Mediterranean and Black Seas, but the Dardanelles appears to be the limit of the range of Anisakıs simplex.

scholarly journals Mediterranean Aquaculture in a Changing Climate: Temperature Effects on Pathogens and Diseases of Three Farmed Fish Species

Pathogens ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1205
Author(s):  
Maria Chiara Cascarano ◽  
Orestis Stavrakidis-Zachou ◽  
Ivona Mladineo ◽  
Kim D. Thompson ◽  
Nikos Papandroulakis ◽  
...  
Keyword(s):  
Climate Change ◽  
Mediterranean Sea ◽  
Fish Species ◽  
Sparus Aurata ◽  
Dicentrarchus Labrax ◽  
Disease Outbreaks ◽  
Gilthead Seabream ◽  
Farmed Fish ◽  
Fish Welfare ◽  
The Mediterranean

Climate change is expected to have a drastic effect on aquaculture worldwide. As we move forward with the agenda to increase and diversify aquaculture production, rising temperatures will have a progressively relevant impact on fish farming, linked to a multitude of issues associated with fish welfare. Temperature affects the physiology of both fish and pathogens, and has the potential to lead to significant increases in disease outbreaks within aquaculture systems, resulting in severe financial impacts. Significant shifts in future temperature regimes are projected for the Mediterranean Sea. We therefore aim to review and discuss the existing knowledge relating to disease outbreaks in the context of climate change in Mediterranean finfish aquaculture. The objective is to describe the effects of temperature on the physiology of both fish and pathogens, and moreover to list and discuss the principal diseases of the three main fish species farmed in the Mediterranean, namely gilthead seabream (Sparus aurata), European seabass (Dicentrarchus labrax), and meagre (Argyrosomus regius). We will attempt to link the pathology of each disease to a specific temperature range, while discussing potential future disease threats associated with the available climate change trends for the Mediterranean Sea.

scholarly journals Reconstructing discards profiles of unreported catches

2018 ◽  
Vol 82 (S1) ◽  
pp. 39 ◽  
Author(s):  
Francisco Leitão ◽  
Vânia Baptista ◽  
Karim Erzini
Keyword(s):  
Purse Seine ◽  
Artisanal Fisheries ◽  
Sardina Pilchardus ◽  
Merluccius Merluccius ◽  
Liza Aurata ◽  
Scomber Colias ◽  
Boops Boops ◽  
Trawl Fisheries ◽  
Belone Belone ◽  
Unreported Catches

In Portugal it has been estimated that unreported catches represent one third of total catches. Herein, information on landings and total unreported catches (discards) by commercial métier were disaggregated into high taxonomic detail using published scientific studies. Fish accounted for 93.5% (115493 t) of overall unreported catches per year, followed by cephalopods (2345 t, 1.9%) and crustaceans (1754 t, 1.4%). Sharks accounted for 1.3% of total unreported catches in weight (1638 t/y). Unreported taxa consisted mostly of the commercial landed fish species: Scomber colias, Boops boops, Trachurus picturatus, T. trachurus, Merluccius merluccius, Sardina pilchardus, Liza aurata and Micromesistius poutassou, which together accounted for 70% of the unreported discarded catches. The number of unreported/discarded species was highest in artisanal fisheries, followed by trawl and purse seine. In artisanal fisheries, L. aurata, S. colias, S. pilchardus, Trachinus draco and B. boops accounted for 76.4% of the unreported discards. B. boops, S. colias and S. pilchardus were also among the most discarded purse seine species, together with Belone belone accounting for 79% of the unreported catches. In trawl fisheries, T. picturatus (16%), M. merluccius (13%), S. colias (13%) and M. poutassou (13%) accounted for 55% of the trawl discarded unreported catches. The discarded species that most contribute to overall unreported catches are those that are most frequently landed and that most contribute to overall landings in weight.

scholarly journals Genetic structuring in farmed and wild Gilthead seabream and European seabass in the Mediterranean Sea: implementations for detection of escapees

2020 ◽  
Vol 33 ◽  
pp. 7
Author(s):  
Eirini-Slavka Polovina ◽  
Evelina Kourkouni ◽  
Costas S. Tsigenopoulos ◽  
Pablo Sanchez-Jerez ◽  
Emmanuel D. Ladoukakis
Keyword(s):  
Mediterranean Sea ◽  
Sparus Aurata ◽  
Eastern Mediterranean ◽  
Dicentrarchus Labrax ◽  
Western Mediterranean ◽  
Gilthead Seabream ◽  
Fish Farms ◽  
Genetic Structuring ◽  
European Seabass ◽  
The Mediterranean

Microsatellite markers were used to investigate the genetic structure of the two most important cultured fish in the Mediterranean Sea, the gilthead seabream (Sparus aurata) and the European seabass (Dicentrarchus labrax), from two (one wild and one farmed) populations in Western Mediterranean (Spain) and from two (one wild and one farmed) populations Eastern Mediterranean (Greece). All populations were in Hardy-Weinberg disequilibrium. Interestingly, wild and farmed populations for both species from Greece were genetically differentiated and could be distinguished from each other. We used Bayesian methods for cluster analysis of farmed and wild populations. Our analysis has implications for the identification of escapees from fish farms to the wild.

The Food of Seriola Dumerili (Pisces: Carangidae) in the Catalan Sea (Western Mediterranean)

1995 ◽  
Vol 75 (1) ◽  
pp. 257-260 ◽  
Author(s):  
J. Matallanas ◽  
M. Casadevall ◽  
M. Carrasson ◽  
J. Bolx ◽  
V. Fernandez
Keyword(s):  
South Africa ◽  
Nova Scotia ◽  
Hawaiian Islands ◽  
Arabian Gulf ◽  
Western Mediterranean ◽  
Bay Of Biscay ◽  
Sardina Pilchardus ◽  
Merluccius Merluccius ◽  
Main Food ◽  
Seriola Dumerili

Stomachs of 385 specimens of Seriola dumerili (Risso, 1810) have been analysed. Their coefficient of repletion is 50·8% in juveniles and 90·3% in adults. Juveniles feed almost exclusively on Teleostei with Engraulis encrasicholus and Sardina pilchardus as the main food; Cephalopoda (Loligo vulgaris and Sepiola sp.) and Crustacea (Squilla mantis) are also eaten. Adults feed on a great diversity of Teleostei headed by S. pilchardus and Merluccius merluccius.According to Smith-Vaniz (1986)Seriola dumerili is both epibenthic and pelagic, occurring at 18–72 m in small to moderate schools. Juveniles are associated with flotsam in oceanic or offshore neritic waters. Adults often live near reefs or at deep off-shore holes or drop-offs. It is found from the Mediterranean and the Bay of Biscay to South Africa, from Nova Scotia to Brazil, and also in the Arabian Gulf, Australia, Japan and the Hawaiian Islands.

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