POLYCHLORINATED BIPHENYLS IN EDIBLE FISH FROM BLACK SEA, BULGARIA

2017 ◽  
Author(s):  
Mona Stancheva ◽  
Mona Stancheva ◽  
Stanislava Georgieva ◽  
Stanislava Georgieva ◽  
Zlatina Peteva ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Black Sea ◽  
Fish Species ◽  
Neogobius Melanostomus ◽  
Pollution Monitoring ◽  
Grey Mullet ◽  
Mass Spectrometry Detection ◽  
Black Sea Coast ◽  
Lipid Weight ◽  
Edible Fish

Polychlorinated biphenyls (PCBs) can still be a problem for the aquatic environment. Fish species are a suitable indicator for the environmental pollution monitoring because they concentrate pollutants in their tissues directly from water. Concentrations of PCBs were measured in marine fish, collected from Bulgarian Black Sea coast in order to monitor the dynamics of these pollutants in 2007, 2010 and 2015. The fish species: goby (Neogobius melanostomus), sprat (Sprattus sprattus sulinus), horse mackerel (Trachurus Mediterraneus ponticus) and grey mullet (Mugil cephalus) were chosen because of their characteristic feeding behavior. The PCBs were determined by gas chromatography system with mass spectrometry detection. The Total PCBs ranged from 93.8 to 513.3 ng/g lipid weight (in grey mullet and goby, respectively). Levels of PCBs in goby and grey mullet decreased in 2010 and 2015. In order to assess the safety of fish as food were calculated TEQ. They are determined by the results of dioxin - like (dl) PCBs. TEQs were calculated from 0.01 to 0.04 pg TEQ/g ww and did not exceed the EC limit of 3 pg TEQ/g ww. The levels of PCBs in fish from Bulgarian Black Sea were comparable to those found in neighboring seas.

POLYCHLORINATED BIPHENYLS IN EDIBLE FISH FROM BLACK SEA, BULGARIA

2017 ◽  
Author(s):  
Mona Stancheva ◽  
Mona Stancheva ◽  
Stanislava Georgieva ◽  
Stanislava Georgieva ◽  
Zlatina Peteva ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Black Sea ◽  
Fish Species ◽  
Neogobius Melanostomus ◽  
Pollution Monitoring ◽  
Grey Mullet ◽  
Mass Spectrometry Detection ◽  
Black Sea Coast ◽  
Lipid Weight ◽  
Edible Fish

Polychlorinated biphenyls (PCBs) can still be a problem for the aquatic environment. Fish species are a suitable indicator for the environmental pollution monitoring because they concentrate pollutants in their tissues directly from water. Concentrations of PCBs were measured in marine fish, collected from Bulgarian Black Sea coast in order to monitor the dynamics of these pollutants in 2007, 2010 and 2015. The fish species: goby (Neogobius melanostomus), sprat (Sprattus sprattus sulinus), horse mackerel (Trachurus Mediterraneus ponticus) and grey mullet (Mugil cephalus) were chosen because of their characteristic feeding behavior. The PCBs were determined by gas chromatography system with mass spectrometry detection. The Total PCBs ranged from 93.8 to 513.3 ng/g lipid weight (in grey mullet and goby, respectively). Levels of PCBs in goby and grey mullet decreased in 2010 and 2015. In order to assess the safety of fish as food were calculated TEQ. They are determined by the results of dioxin - like (dl) PCBs. TEQs were calculated from 0.01 to 0.04 pg TEQ/g ww and did not exceed the EC limit of 3 pg TEQ/g ww. The levels of PCBs in fish from Bulgarian Black Sea were comparable to those found in neighboring seas.

scholarly journals Investigation about the presence of organochlorine pollutants in mussels from the Black Sea, Bulgaria

2016 ◽  
Vol 27 (1) ◽  
pp. 8-12 ◽  
Author(s):  
Stanislava Georgieva ◽  
Mona Stancheva ◽  
Lubomir Makedonski
Keyword(s):  
Polychlorinated Biphenyls ◽  
Black Sea ◽  
Mytilus Galloprovincialis ◽  
Aquatic Organisms ◽  
The Black Sea ◽  
Mass Spectrometry Detection ◽  
Black Sea Coast ◽  
Wet Weight ◽  
Local Levels ◽  
Sea Coast

Abstract The aim of this study was to investigate the presence of polychlorinated biphenyls (PCBs), organochlorine pesticides (HCB, DDT and its metabolites) and HCBD in mussels from Bulgarian Black Sea coast. Mussels (Mytilus galloprovincialis) are aquatic organisms which are immobile so that the concentration of pollutants should primarily be considered as an indication of local levels of organochlorine compounds. Samples were collected from three areas of Black Sea coast of Bulgaria in summer 2015. The fifteen congeners of PCBs, HCB, HCBD, DDT and its metabolites DDE and DDD were performed by gas chromatography system with mass spectrometry detection. The metabolites DDE and DDD were found in all analyzed mussel samples, but PCBs were not detected in any sample. DDE concentrations were found in mussels from 1.09 to 1.63 ng/g wet weight. In mussel total DDT concentrations (2.14 ng/g ww) were found comparable to those in mussels, sampled in 2013 and 2014 (1.87 ng/g ww). The levels of DDTs and polychlorinated biphenyls in mussels from the Black Sea were found comparable to levels measured in the same molluscs from neighbor seas - Mediterranean Sea and Adriatic Sea.

scholarly journals Organochlorine contaminants (PCBs, DDTs, HCB & HBDE) in fish from the Lake Varna and Lake Beloslav, Bulgaria

2015 ◽  
Vol 26 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Stanislava Georgieva ◽  
Mona Stancheva ◽  
Lubomir Makedonski
Keyword(s):  
Fish Species ◽  
Aquatic Ecosystems ◽  
Neogobius Melanostomus ◽  
Grey Mullet ◽  
Mass Spectrometry Detection ◽  
Fish Tissues ◽  
Organochlorine Contaminants ◽  
In The Wild ◽  
Wet Weight ◽  
Indicator Pcbs

Abstract Concentrations of organochlorine compounds such as polychlorinated biphenyls (PCBs), DDT and its metabolites, hexachlorobenzene (HCB) and hexachlorobutadiene (HBDE) were determined in three fish species: goby (Neogobius melanostomus), golden grey mullet (Mugil auratus) and silverside (Atherina boyeri). Samples were collected from the Lake Varna and the Lake Beloslav in 2014. The edible fish tissues were analyzed in order to investigate the presence of pollutants in species from the lakes near Varna City, Bulgaria and compared the results to the levels in other aquatic ecosystems. The fifteen congeners of PCBs, HCB, HCBD, DDT and its two main metabolites DDE and DDD were determined by capillary gas chromatography system with mass spectrometry detection. The OCPs levels in the wild fish were found in the order DDTs > PCBs. The other contaminants HCB and HCBD were not detected or were below the analytical detection limit. Among the pesticides, essentially only the metabolites p, p’- DDE and p, p’- DDD were found. The concentrations of DDTs were determined from 2.66 to 17.97 ng/g wet weight and PCBs concentrations were found from 0.43 to 8.05 ng/g ww (in goby and golden grey mullet, respectively). The sum of the six Indicator PCBs did not exceed the European maximum limit 75 ng/g wet weight. The concentrations of DDTs and PCBs were found lower compared to those in similar fish species from other aquatic ecosystems.

Trichodinid ciliates from fishes of the Rumanian Black Sea coast

Parasitology ◽  
1962 ◽  
Vol 52 (1-2) ◽  
pp. 49-61 ◽  
Author(s):  
Jiří Lom
Keyword(s):  
New Species ◽  
Black Sea ◽  
Fish Species ◽  
Gasterosteus Aculeatus ◽  
Mugil Cephalus ◽  
The Black Sea ◽  
Separate Paper ◽  
Short Survey ◽  
Black Sea Coast ◽  
Sea Coast

Representatives of a total of twenty fish species, most of them marine, from the Black Sea coast in Rumania were investigated. Of these, ten species were found to harbour ectoparasitic trichodinids on their skin and gills. Three of them, Trichodina rectuncinata Raabe, 1959, from Gaidropsis mediterranaeus and Crenilabrus griseus, T. caspialosae (Dogiel, 1940) mihi from Alosa braschnikowi meotica and T. d. f. latispina from Gasterosteus aculeatus, were already known.Three species could be established as new ones: T. puytoraci sp.nov. from Mugil auratus, M. cephalus and M. saliens, T. raabei sp.nov. from Pleuronectes flesus and T. lepsii sp.nov. from M. auratus. They are clearly differentiated from other species.The following trichodinids were provisionally classified as forms (including one new one) of T. domerguei, thus enlarging this most complicated Trichodina species: T. domerguei, cf. latispina from Gobius syrman, T. domerguei f.n. maris-negri from Gaidropsis mediterranaeus, and T. domerguei f. partidisci from Mugil cephalus. Other populations of T. domerguei could not be properly classified because of lack of material.The description of the new species of Tripartiella which have been mentioned in the introduction, will be given in a separate paper.A short survey on marine trichodinids recorded up to the present is given.

scholarly journals Ichthyofauna of the Black Sea coastal zone in the Laspi Bay area (Crimea)

2021 ◽  
Vol 6 (2) ◽  
pp. 3-17
Author(s):  
E. R. Abliazov ◽  
A. R. Boltachev ◽  
E. P. Karpova ◽  
A. N. Pashkov ◽  
O. N. Danilyuk
Keyword(s):  
Coastal Zone ◽  
Black Sea ◽  
Fish Species ◽  
Neogobius Melanostomus ◽  
Horse Mackerel ◽  
The Black Sea ◽  
Mean Annual Temperature ◽  
Fishing Gear ◽  
Ecological Groups ◽  
Crimean Peninsula

The ongoing processes of the Black Sea salinization and fluctuations in mean annual temperature have already caused the natural dispersal of various representatives of the Mediterranean Basin and Indian Ocean fauna and led to a change in species composition and structure of fish communities, inhabiting the coastal zone of the Crimean Peninsula. As a result, it became necessary to study modern composition of fish fauna and indicators of its species richness and diversity. The Laspi Bay was chosen as a model polygon for the following reasons: relatively low level of anthropogenic load; the fact that its part belongs to the specially protected natural areas, as well as the absence of fishing activity with coastal fixed fishing gear; constant free entry of pelagic fish species; biotopes diversity; and smooth change in depth. These peculiarities of the Laspi Bay allow assessing the presence of fish from different ecological groups and provide conditions for monitoring. The study was carried out in the spring-autumn periods of 1990–1994 and 2017–2018. The material was sampled with net fishing gear, hook tackle, and traps. The nets were set at various depths both perpendicular and parallel to the shoreline during the day (10:00 to 18:00) and at nighttime (18:00 to 06:00). Visual observations were also carried out. In total, 70 fish species were registered. Out of them, 14 species were previously not recorded for this area; 5 of them [salema Sarpa salpa (Linnaeus, 1758), red-mouthed goby Gobius cruentatus Gmelin, 1789, Bath’s goby Pomatoschistus bathi Miller, 1982, mystery blenny Parablennius incognitus (Bath, 1968), and chestnut goby Chromogobius quadrivittatus (Steindachner, 1863)] are recent invaders, actively spreading in the Black Sea over the past 15–20 years only. Most of the analyzed species (64) are marine euryhaline fish. The brackish-water group is represented by three species, indigenous to the Black Sea: mushroom goby Ponticola eurycephalus (Kessler, 1874), round goby Neogobius melanostomus (Pallas, 1814), and knout goby Mesogobius batrachocephalus (Pallas, 1814). Out of anadromous fish, starry sturgeon Acipenser stellatus Pallas, 1771 is registered, as well as two Clupeidae species: Black Sea shad Alosa tanaica (Grimm, 1901) and Pontic shad Alosa immaculata Bennett, 1835. As established, the observed seasonal dynamics of species diversity indices within the studied water area is associated with fluctuations in the abundance of horse mackerel Trachurus mediterraneus (Steindachner, 1868). In April – May, when this species headed to shallow water for feeding and breeding, the indices have the lowest values; in August, when the abundance of horse mackerel decreases, the maximum values are observed.

scholarly journals A New Record for Occurrence ofSymphodus bailloni(Osteichthyes: Perciformes: Labridae) in the Western Black Sea Coast of Turkey

2012 ◽  
Vol 2012 ◽  
pp. 1-5
Author(s):  
Didem Göktürk ◽  
F. Saadet Karakulak ◽  
Nuran Ünsal ◽  
Abdullah E. Kahraman
Keyword(s):  
Black Sea ◽  
Fish Species ◽  
New Record ◽  
The Black Sea ◽  
Black Sea Coast ◽  
Diagnostic Characteristics ◽  
Sea Coast

The fish speciesSymphodus bailloni(Valenciennes, 1839) reported in the present study were collected between June 2010 and June 2011 from the western Black Sea coasts which were previously not recorded from the Black Sea coast of Turkey. A total of 717 specimens ofS. bailloniwere measured, ranging between 8.9 and 15.4 cm TL. Morphometrics, meristics, and diagnostic characteristics of the species are presented.

scholarly journals Comparative Study of Intestinal Microbiota Composition of Six Edible Fish Species

2021 ◽  
Vol 12 ◽  
Author(s):  
Tamir Ofek ◽  
Maya Lalzar ◽  
Sivan Laviad-Shitrit ◽  
Ido Izhaki ◽  
Malka Halpern
Keyword(s):  
Common Carp ◽  
Intestinal Microbiota ◽  
Striped Bass ◽  
Fish Species ◽  
Trophic Level ◽  
Red Drum ◽  
Microbiota Composition ◽  
Grey Mullet ◽  
Freshwater Aquaculture ◽  
Edible Fish

Intensive freshwater aquaculture in the Spring Valley, Israel, is implemented mainly in earthen fishponds and reservoirs that are stocked with a variety of edible fish species. Here we sampled six different healthy fish species from these intensive aquacultures. The fish were hybrid striped bass, European bass, red drum (all carnivores), hybrid tilapia, flathead grey mullet (both herbivores), and common carp (an omnivore). Significant differences were found among the intestinal microbiota of the six studied fish species. The microbiota composition diversity was strongly related to the trophic level of the fish, such that there was a significant difference between the carnivore and the herbivore species, while the omnivore species was not significantly different from either group. The most abundant genus in the majority of the fishes’ intestinal microbiota was Cetobacterium. Furthermore, we found that beside Cetobacterium, a unique combination of taxa with relative abundance >10% characterized the intestine microbiota of each fish species: unclassified Mycoplasmataceae, Aeromonas, and Vibrio (hybrid striped bass); Turicibacter and Clostridiaceae 1 (European bass); Vibrio (red drum); ZOR0006—Firmicutes (hybrid tilapia); unclassified Mycoplasmataceae and unclassified Vibrionaceae (flathead grey mullet); and Aeromonas (common carp). We conclude that each fish species has a specific bacterial genera combination that characterizes it. Moreover, diet and the trophic level of the fish have a major influence on the gut microbiota of healthy fish that grow in intensive freshwater aquaculture.

scholarly journals PERSISTENT ORGANIC POLLUTANTS - PCBs AND DDTs IN FISH FROM DANUBE RIVER AND FROM BLACK SEA, BULGARIA

2013 ◽  
Vol 1 ◽  
pp. 354-361
Author(s):  
Mona Stancheva ◽  
Stanislava Georgieva ◽  
Lubomir Makedonski
Keyword(s):  
Freshwater Fish ◽  
Black Sea ◽  
Marine Fish ◽  
Fish Species ◽  
Danube River ◽  
Mass Spectrometry Detection ◽  
Silurus Glanis ◽  
Common Carp Cyprinus Carpio ◽  
Pike Perch ◽  
Fish Samples

Persistent organochlorine pollutants (POPs) like polychlorinated biphenyls (PCBs) and DDT residues (DDTs) can still be a problem for the aquatic environment and the human health. PCBs and DDTs were determined in three freshwater fish species: common carp (Cyprinus carpio), catfish (Silurus glanis), pike-perch (Sander lucioperca) and two marine fish: shad (Alosa pontica pontica) and grey mullet (Mugil cephalus). The freshwater fish samples were collected from the Danube River and from Black Sea, Bulgaria in 2010. The POPs were analyzed in order to investigate the presence of PCBs and DDTs in fish species from Danube River and compared the results to the levels in marine fish species from Black Sea. The fifteen congeners of PCBs, p,p’-DDT and its two main metabolites p,p’-DDE and p,p’-DDD were determined by capillary gas chromatography system with mass spectrometry detection. DDTs were the predominant contaminants in investigated species, with the p,p’- DDE contributing to more than 67% to the total DDTs. In freshwater fish concentrations of DDTs were found from 19.2 to 30.3 ng/g ww and PCBs concentrations - from 6.2 to 12.6 ng/g ww. The highest levels of PCBs and DDTs were determined in shad. The levels of DDTs and PCBs were determined lower than those found in similar fish species from other aquatic ecosystems.

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