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1.
Mar Pollut Bull ; 165: 112108, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33581567

RESUMO

In this study, metal compositions in anchovy (Engraulis encrasicolus) sampled from 11 different sites representing Turkey, Georgia, and Abkhazia coasts of the Black Sea were investigated. For this purpose, micro (Al, Zn, Mn, Co, Cr, Cu, Fe, Ni, Cd, Pb, Se, As, and Hg) and macro (K, Ca, Na, Mg, P) element content in edible muscle tissue of anchovy were determined. In addition, the potential risks associated with human consumption of the samples were evaluated using quality indices such as estimated weekly intake (EWI), target hazard quotient (THQ), and total exposure hazard index (HI). The results showed that the potassium (K) concentration was the highest in edible tissue of the anchovies from all stations. Anchovies were also found to be rich in phosphorus and calcium. When the metal content of anchovies was compared, there were statistically variations among metal concentrations (except for Co, Ni, Cu, Cr, Cd, Pb, and Hg) in the muscle tissue of anchovies according to the stations (P<0.05). The concentrations of Pb, Cd, Zn, Cu, Ni, and Cr in anchovy were found below the maximum permissible values determined by various national and international organizations for seafood. Besides, when the samples were examined in terms of EWI, THQ, and HI quality indices, it was determined that anchovy consumption did not pose a potential hazard to human health for the consumption of the anchovy. The present study conclusively indicated that no health problem can be raised from human consumption of the examined commercial anchovy along the Turkey, Georgia, and Abkhazia coasts of the Black Sea.


Assuntos
Metais Pesados , Animais , Mar Negro , Monitoramento Ambiental , Georgia , Humanos , Metais Pesados/análise , Medição de Risco , Alimentos Marinhos/análise , Turquia
2.
J Environ Radioact ; 229-230: 106540, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33503559

RESUMO

The new data on 239+240Pu, 238Pu, 241Pu, 241Am vertical distribution in the deep western Black Sea sediments was analyzed. The sediment dating, obtained by means of 238Pu/239+240Pu activity ratio vertical distribution, suggested the upper 3 cm layer of sediments to be formed during 27 years after the Chernobyl accident and the deeper layers to be formed earlier in pre-Chernobyl time (before 1986). The whole data set on profiles of radionuclides studied was shown to reflect the history of their input into the basin and elimination of these radionuclides from the water column. Analysis of inventories of plutonium alpha-emitting nuclides ensured a more significant contribution of Chernobyl fallout into the present total 238Pu inventory than into 239+240Pu one. The 241Am inventory after-deposition enhancement due to 241Pu decay was estimated at 74% in pre-Chernobyl sediment layer and the general contribution of 241Pu support in the total 241Am inventory in situ enhancement was estimated at 49%.


Assuntos
Plutônio , Monitoramento de Radiação , Poluentes Radioativos da Água , Amerício/análise , Mar Negro , Sedimentos Geológicos , Plutônio/análise , Poluentes Radioativos da Água/análise
3.
Parasite ; 28: 4, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33433322

RESUMO

BACKGROUND: One of the major migration routes for birds going between Europe and Asia is the Black Sea-Mediterranean route that converges on the Volga Delta, continuing into the area of the Caspian Sea. Cercarial dermatitis is a disorder in humans caused by schistosome trematodes that use aquatic birds and snails as hosts and is prevalent in areas of aquaculture in Northern Iran. Before the disorder can be addressed, it is necessary to determine the etiological agents and their host species. This study aimed to document whether domestic mallards are reservoir hosts and if so, to characterize the species of schistosomes. Previous work has shown that domestic mallards are reservoir hosts for a nasal schistosome. RESULTS: In 32 of 45 domestic mallards (Anas platyrhynchos domesticus) (71.1%), the schistosome Trichobilharzia franki, previously reported only from Europe, was found in visceral veins. Morphological and molecular phylogenetic analysis confirmed the species designation. These findings extend the range of T. franki from Europe to Eurasia. CONCLUSION: The occurrence of cercarial dermatitis in Iran is high in areas of aquaculture. Previous studies in the area have shown that domestic mallards are reservoir hosts of T. regenti, a nasal schistosome and T. franki, as shown in this study. The genetic results support the conclusion that populations of T. franki from Iran are not differentiated from populations in Europe. Therefore, the schistosomes are distributed with their migratory duck hosts, maintaining the gene flow across populations with compatible snail hosts in Iran.


Assuntos
Migração Animal , Doenças das Aves , Dermatite , Patos/parasitologia , Distribuição Animal , Animais , Animais Domésticos , Ásia , Doenças das Aves/epidemiologia , Mar Negro , Dermatite/epidemiologia , Dermatite/parasitologia , Reservatórios de Doenças/parasitologia , Europa (Continente) , Especificidade de Hospedeiro , Humanos , Irã (Geográfico)/epidemiologia , Filogenia , Schistosoma/anatomia & histologia , Schistosoma/genética , Esquistossomose/epidemiologia , Esquistossomose/parasitologia , Esquistossomose/transmissão , Caramujos/parasitologia
4.
Zootaxa ; 4881(2): zootaxa.4881.2.10, 2020 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-33311321

RESUMO

Morphological descriptions of two species of the genus Theristus Bastian, 1865 belonging to group flevensis, found in the hypersaline water bodies of the Crimean Peninsula, are presented. Theristus siwaschensis sp. n. is morphologically closest to T. flevensis Schuurmans Stekhoven, 1935, T. parambronensis Timm, 1952, T. macroflevensis Gerlach, 1954, T. metaflevensis Gerlach, 1955, but differs from them by the structure of the reproductive system in females, number of cephalic setae and size of spicules. Specimens of T. flevensis found in the Lake Chersonesskoye are similar to the re-description of a large forms of T. flevensis from Chile by Murhy (1966) and Caspian Sea by Chesunov (1981). However, it differs from the Caspian Sea species by having larger amphids, longer cephalic setae and spicules. T. pratti Murph Canaris, 1964 and T. ambronensis Schulz, 1937 are synonymized with T. flevensis.


Assuntos
Cromadoria , Nematoides , Animais , Mar Negro , Feminino , Água
5.
Environ Monit Assess ; 192(12): 769, 2020 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-33215246

RESUMO

A severe thunderstorm occurred in the Sundura watershed, located in Hopa district in North Eastern Turkey on August 24, 2015. The thunderstorm generated torrents, floods, and landslides and caused the loss of eight lives as well as extensive damage to property. Hydrometeorological, physiographic, hydraulic, and socioeconomic causes of the Hopa catastrophe were investigated in the study. Precipitation records were checked by weather satellite images. The frequency of this thunderstorm was estimated to be close to 100 years. Due to morphometric parameters and land misuse by tea cultivation in the steep upper watershed, the Sundura Creek has a high flood generating potential. The part of the Sundura Creek passing through the urban area has been channeled, but the channel capacity was not sufficient for a 100-year flow, and therefore some parts of the city were inundated. Another reason for flooding is clogging of inadequate culvert sections at conjunction points of the creek or Black Sea, by debris. Some tributaries could not join the Sundura Creek or the sea due to clogged culverts or the elevated Black Sea highway and Hopa-Artvin highway road embankments. In order to control torrents and floods in the Sundura watershed, afforestation is needed for non-productive forest and tea cultivation areas in the upper watershed. In the lower part of the watershed, the main channel should be redesigned according to the Q500 years flow. Some debris trapping structures should be constructed to prevent clogging of culverts and bridges. Unnecessary road constructions on the slopes should be prevented, and buildings below the Q100 flood level should be encouraged to relocate to safer/higher elevations.


Assuntos
Monitoramento Ambiental , Inundações , Mar Negro , Cidades , Turquia
6.
Environ Monit Assess ; 192(12): 794, 2020 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-33244660

RESUMO

The relationships between nutrients and the trophic state of Borçka dam reservoir in the Çoruh River Basin, which is located in the Eastern Black Sea region of Turkey, were evaluated using the trophic state index (TSI), trophic level index (TLI), and statistical analysis. The samples data were analyzed for chlorophyll-a (Chl-a), total phosphorus (TP), total nitrogen (TN), and secchi disk (SD). In the evaluation, according to the TSI' TLI and Turkish legislation, the reservoir is assessed as mesotrophic in terms of TP, TN data of the water quality. The measurement results of these parameters are higher at the depth points and lower on the surface. The Chl-a parameter is evaluated mesotrophic with 2013 data at the depth, and oligotrophic with 2016 data. The result of TSI (Chl-a) < TSI (SD), TSI (Chl-a) < TSI (TP), and TSI (TN) indicate non-algal turbidity. At the same time, this was verified by calculating the non-algal turbidity coefficient (Kna). It is observed that there is a low correlation between Chl-a and Kna, however a low correlation with TN, and a high correlation with TP. Non-algal particles in the dam lake may occur due to surface runoff and soil erosion from the agricultural area and human settlements. Regression analysis was conducted to determine the relationship between nutrients and Chl-a. The relationship of Chl-a concentration with TN, TP, and TN/TP concentrations is weak. This supports that there are inorganic suspended solids (non-volatile suspended solids) with high underwater light availability.Graphical abstract.


Assuntos
Eutrofização , Lagos , Mar Negro , China , Clorofila/análise , Monitoramento Ambiental , Nitrogênio/análise , Nutrientes , Fósforo/análise , Turquia
7.
Mar Pollut Bull ; 160: 111678, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33181951

RESUMO

This study is focused on delivery and fate of floating marine litter (FML) carried by rivers to coastal sea. We examine a large flooding event which happened in the northeastern part of the Black Sea in October 2018. A high resolution circulation model coupled with a Lagrangian particle model is applied to simulate transport of riverine FML in the coastal sea. During this flood multiple river plumes in the study area coalesced into one stripe of freshened water which occupied large segment of coastal sea along the shoreline. Riverine FML was transported within this stripe far off its sources in river mouths and remained arrested near the shore. As a result, approximately half of the discharged FML was washed ashore by the Stokes drift. FML, which remained in the sea, accumulated at convergence lines associated with large salinity gradients at the fronts between the river plumes and the ambient sea.


Assuntos
Inundações , Rios , Mar Negro , Monitoramento Ambiental , Plásticos
8.
Zootaxa ; 4772(1): zootaxa.4772.1.6, 2020 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-33055627

RESUMO

Microlaimus sergeevae sp. n. is described and illustrated from the Crimea shelf of the Black Sea. It is characterized by the 1301-1728 µm long body; cuticle with distinct annuli; spicules 34-37 µm long, curved; gubernacular apophyses 20-25 µm long, surrounding distal end of spicules; criptocyrcular amphidial fovea 7-8 µm in diameter; cervical setae present; four submedian rows of pores spreading along the whole body length, and eight precloacal supplements in males. The new species morphologically resembles M. gerlachi Wieser 1954, M. paraborealis Allgen 1940a and M. kaurii Wieser 1954, but differs from them by the length of cephalic setae, size of the body, presence of cervical setae, shape of the gubernacular apophyses, eight tubular precloacal supplements and submedian rows of pores spreading along the whole body length. M. sergeevae sp. n. differs from M. gerlachi by having a smaller amphidial fovea, shorter spicules and gubernacular apophyses. The new species differs from M. paraborealis by having larger value of c. It differs from M. kaurii by having longer spicules and larger values of c and b.


Assuntos
Nematoides , Animais , Mar Negro , Cromadoria , Masculino
9.
Zootaxa ; 4860(2): zootaxa.4860.2.9, 2020 Oct 12.
Artigo em Inglês | MEDLINE | ID: mdl-33056168

RESUMO

Herein I describe Isophya sonora sp. nov. a new bush-cricket species from Trabzon, Northeastern part of Turkey (Black Sea Region). The species is characterized by the shape of the markedly convergent fastigium, distinctly broadened pronotum at metazona, elongate tegmina and large mirror area of left tegmen in the male. The bioacoustic characteristics, and the shape and number of the teeth of stridulatory organs are also different compared to closely related species. The new species is clearly a member of I. zernovi species-group allied with I. bivittata. Both the bioacoustics, and the morphological data, demonstrate the relationships between species of the I. zernovi species-group are as follows: (I. bicarinata + (I. zernovi + I. horon)) + (I. sonora sp. n. + I. bivittata?))) + (I. karadenizensis + I. autumnalis)))).


Assuntos
Colubridae , Gryllidae , Animais , Mar Negro , Críquete , Masculino , Turquia
10.
Zootaxa ; 4763(3): zootaxa.4763.3.6, 2020 Apr 14.
Artigo em Inglês | MEDLINE | ID: mdl-33056857

RESUMO

Alburnoides turani, new species, from the Filyos River drainage is described and the distribution of the nine other Alburnoides species known from the southern Black Sea basin is revised. Alburnoides turani is distinguished by having a naked ventral keel, or the keel is covered with 1-3 scales between the posterior pelvic-fin base and the anus, an interorbital distance wider than the eye diameter and the snout length, 48-55 total lateral-line scales, 5-6 scale rows between the anal-fin origin and the lateral line, 13½-14½ branched anal-fin rays, and 41-42 total vertebrae.


Assuntos
Cyprinidae , Animais , Mar Negro , Rios
11.
PLoS One ; 15(9): e0239478, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32986725

RESUMO

Rift Valley fever (RVF) is an arboviral zoonosis that primarily affects ruminants but can also cause illness in humans. The increasing impact of RVF in Africa and Middle East and the risk of expansion to other areas such as Europe, where competent mosquitos are already established, require the implementation of efficient surveillance programs in animal populations. For that, it is pivotal to regularly assess the performance of existing diagnostic tests and to evaluate the capacity of veterinary labs of endemic and non-endemic countries to detect the infection in an accurate and timely manner. In this context, the animal virology network of the MediLabSecure project organized between October 2016 and March 2017 an external quality assessment (EQA) to evaluate the RVF diagnostic capacities of beneficiary veterinary labs. This EQA was conceived as the last step of a training curriculum that included 2 diagnostic workshops that were organized by INIA-CISA (Spain) in 2015 and 2016. Seventeen veterinary diagnostic labs from 17 countries in the Mediterranean and Black Sea regions participated in this EQA. The exercise consisted of two panels of samples for molecular and serological detection of the virus. The laboratories were also provided with positive controls and all the kits and reagents necessary to perform the recommended diagnostic techniques. All the labs were able to apply the different protocols and to provide the results on time. The performance was good in the molecular panel with 70.6% of participants reporting 100% correct results, and excellent in the serological panel with 100% correct results reported by 94.1% of the labs. This EQA provided a good overview of the RVFV diagnostic capacities of the involved labs and demonstrated that most of them were able to correctly identify the virus genome and antibodies in different animal samples.


Assuntos
Febre do Vale de Rift/diagnóstico , Animais , Mar Negro , Culicidae , Europa (Continente) , Genoma Viral , Humanos , Laboratórios , Mar Mediterrâneo , Febre do Vale de Rift/virologia , Vírus da Febre do Vale do Rift/genética , Ruminantes
12.
J Environ Radioact ; 222: 106348, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32892904

RESUMO

This study examined the temporal variations in radiocesium concentration associated with sinking particles in the northeastern Japan Sea between September 2010 and July 2012. We analyzed sediment trap samples from this period after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March 2011. Cesium-134 was detected in samples collected between May and July 2011 at a depth of 1100 m (4.2-11 mBq g-dry-1) but not in other periods at 1100 m or deeper (3100 and 3500 m). These results confirmed the deposition of FDNPP-derived radiocesium on the surface water in the late April 2011, which rapidly sank with sinking particles to a depth of at least 1100 m, in the northeastern Japan Sea, about 40 days after the deposition in the North Pacific. If FDNPP-derived 137Cs was excluded, no seasonal changes were detected in the 137Cs activity concentration of the sinking particles, and the 137Cs activity concentration of the particles increased with increasing depth. Judging from the concentration of 137Cs of sinking particle and seasonal variation of total mass flux and organic matter content, the lithogenic particle seems to be important for radiocesium associated with sinking particles. These data also strongly suggest a difference in sinking features of particles between 2010-2011 and 2011-2012 deployments. Due to the existence of benthic front, shallow water (1100 m) and deep water (3500 m) are separated during 2010-2011 deployment, but in the winter of 2011-2012, this front disappeared and the particles in surface water seem to have sunk to the depth of 3100 m. The sinking velocity of the particles at 1100 m was estimated to be 33-62 m day-1, with a mean sinking velocity of 43 m day-1. These values were comparable to those estimated at depths shallower than 1000 m in the North Pacific after the FDNPP accident, or in the Mediterranean, North, and Black Seas after the Chernobyl accident.


Assuntos
Radioisótopos de Césio , Acidente Nuclear de Fukushima , Monitoramento de Radiação , Poluentes Radioativos da Água , Mar Negro , Radioisótopos de Césio/análise , Japão , Centrais Nucleares
13.
Mar Pollut Bull ; 160: 111635, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32919124

RESUMO

Antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARB) are worldwide considered as emerging contaminants of large interest, and a primary threat to human health. It is becoming clear that the environment plays a central role in the transmission, spread, and evolution of antibiotic resistance. Although marine systems have been largely investigated, only a few studies have considered the presence of ARGs in meso- and bathypelagic waters. To date, no molecular based studies have yet been made to investigate the occurrence of ARGs in the Black Sea, the largest meromictic basin in the world, receiving water from a number of important European rivers and their residues of anthropogenic activities in permanently stratified mesopelagic water masses. In this study, we determined the presence and the abundance of five ARGs (blaCTXM, ermB, qnrS, sul2, tetA) and of the heavy metal resistance gene (HMRG) czcA, in different sampling sites in the eastern and western Black Sea, at several depths (up to 1000 m) and various distances from the shoreline. Three ARGs (blaCTXM, sul2, and tetA) and czcA were present in at least 43% of the analysed samples, whereas ermB and qnrS were never detected. In particular, sul2 abundances increased significantly in coastal location, whereas tetA increased with sampling depth. These findings point out the Black Sea as a source of ARGs and HMRGs distributed along the whole water column.


Assuntos
Antibacterianos , Metais Pesados , Antagonistas de Receptores de Angiotensina , Inibidores da Enzima Conversora de Angiotensina , Antibacterianos/análise , Mar Negro , Monitoramento Ambiental , Genes Bacterianos , Humanos , Águas Residuárias/análise
14.
Environ Monit Assess ; 192(9): 586, 2020 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-32812095

RESUMO

The striped red mullet (Mullus surmuletus) is an economically important demersal fish species. In this study, our aim was to monitor the pollution in the western Black Sea coast of Turkey using striped red mullet as a bioindicator species. Fish samples were caught from four different locations in the western Black Sea coast of Turkey in 2006, 2009-2011, and 2016. Highly elevated cytochrome P4501A (CYP1A)-related 7-ethoxyresorufin O-deethylase (EROD) activities were measured in striped red mullet caught from Zonguldak Harbor in all of the sampling years. The lowest EROD activities were measured in fish samples caught from Kefken. In addition to the EROD activity measurements, glutathione S-transferase (GST), glutathione reductase, and catalase activities were also measured in the striped red mullet samples. Higher GST and catalase activities were measured in the striped red mullet samples caught from Zonguldak Harbor than from Kefken in 2016. These results indicate that the striped red mullet is responsive to CYP1A inducer pollutants. This study covers intermittent measurements of the biomonitoring data from the striped red mullet caught around the western Black Sea coast of Turkey, over a 10-year period.


Assuntos
Smegmamorpha , Poluentes Químicos da Água/análise , Animais , Mar Negro , Citocromo P-450 CYP1A1 , Monitoramento Ambiental , Turquia
15.
Mar Pollut Bull ; 159: 111525, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32771666

RESUMO

A comparison study was performed on anionic surfactant and phosphate concentrations between the entrance and the exit of Turkish Straits System (TSS). Surface water samples were collected at fall season in 2016 and the spring season in 2017. According to the values obtained from the samples taken from 6 stations at the entrance and 7 at the exit, anionic surfactant values were high at the exit of the TSS, while the phosphate concentrations were relatively lower. The high phosphate values at the entrance are related to the eutrophic feature of the Black Sea. Also, the location of these stations covers one end of the Canal Istanbul Project, which is planned to be built soon, so the data of this study will constitute an important database.


Assuntos
Fosfatos/análise , Tensoativos , Mar Negro , Turquia
16.
Environ Monit Assess ; 192(8): 508, 2020 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-32656575

RESUMO

The Turkish Straits System (TSS) is a dangerous and narrow waterway extending between the Black Sea and the Aegean Sea, including the Bosphorus, the Dardanelles, and the Marmara Sea and the Gulf of Izmit. The western banks of the TSS constitute the geographic starting point of the European continent, while the banks to the east are the beginnings of the Asia. TSS is considered one of the most strategically significant waterways of the world. This waterway is the main trading routes linking the Black Sea riparian countries to the world markets. As a result, the density in marine traffic through the TSS has recently reached alarmingly high levels. The aim of this study was to estimate the amount of plastic waste generated aboard merchant ships during their passage through the TSS during the period 2006-2017. This potential resource of waste would potentially impact on the Marmara Sea and its natural environment. The results of this study revealed that merchant ships crossing the TSS generated an average of 187.6 m3 of plastic waste per year. This result suggests that the threat given by the ships crossing this strait is approximately 1% of the total amount of waste recorded in the TSS coastals.


Assuntos
Plásticos , Navios , Ásia , Mar Negro , Monitoramento Ambiental , Turquia
17.
Chemosphere ; 260: 127570, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32668364

RESUMO

Plastics profoundly threatens ecological balance in marine ecosystems across the globe in the current era of industrialization. Microplastics (MP), in particular, can pose risks reaching humans through the food web via various marine organisms. Among these organisms, since they are consumed as a whole, mussels are vital vectors of MP transfer during human consumption. Hence, here we analyzed MP pollution in Mediterranean mussel (Mytilus galloprovincialis) sampled from 23 different locations all along the Turkish coasts of the Black Sea, Sea of Marmara, and the Aegean Sea. After digestion of the mussels with H2O2, the micro-particles were determined under a stereomicroscope and characterized by confirming with FTIR analyses. 48% of the sampled mussels were found to have MPs. The average MP abundance was 0.69 item/mussel and 0.23 item/g fresh weight (fw) of soft tissue. Morphology was ordered as follows: fragments (67.6%)> fibers (28.4%)> films (4.05%). The dominant size of MPs was detected less than 0.5 mm (26.58%). 12 different polymers have been identified by FTIR and PET (32.9%), PP (28.4%), and PE (19.4%) were found to constitute 80% of the total MPs. The annual average exposure amount for mussel consumers in Turkey was estimated as 1918 MPs item/per year. Even though international organizations such as FAO, JECFA, or EU have not declared permissible limits, our data may inform human health uptake of MP ingestion via mussels. This data might also serve as a reference data-set for further MP monitoring research in Turkish and European Seas.


Assuntos
Microplásticos/análise , Mytilus/química , Poluentes Químicos da Água/análise , Animais , Mar Negro , Ecossistema , Monitoramento Ambiental/métodos , Contaminação de Alimentos/análise , Peróxido de Hidrogênio/química , Frutos do Mar/análise , Turquia
19.
Parasitol Res ; 119(8): 2463-2471, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32529296

RESUMO

Members of the genus Sphaeromyxa Thélohan, 1892 have been reported from a wide variety of fish species worldwide. In the present study, specimens of rusty blenny, Parablennius sanguinolentus, collected from Sinop on the Turkish Black Sea coast were investigated for myxosporean parasites by using both conventional and molecular methods. Sphaeromyxa sevastopoli Naidenova 1970 was the only myxosporean parasite found in the gall bladder of host fishes. The morphology peculiarities of obtained S. sevastopoli spores are in good agreement with those of original description and the morphometric data overlapped in spore length and width but differed in polar capsule length and width; however, they were within the ranges previously reported from 18 host fish species. Moreover, in the present study, molecular analysis of the 18S rDNA gene of S. sevastopoli isolate in our P. sanguinolentus as well as isolates from shore rockling Gaidropsarus mediterraneus and knout goby Mesogobius batrachocephalus which were previously morphologically identified and reported by Okkay and Özer (Acta Zool Bulg 72(1):123-130, 2020) was done for the first time and our three S. sevastopoli genotypes were allocated to the "balbianii" group which is characterized by straight or slightly curved and fusiform or ovoid spores with ovoid polar capsules.


Assuntos
Cnidários/anatomia & histologia , Cnidários/genética , Doenças dos Peixes/parasitologia , Doenças Parasitárias em Animais/parasitologia , Perciformes/parasitologia , Animais , Mar Negro , Cnidários/classificação , DNA Ribossômico/genética , Vesícula Biliar/parasitologia , Especificidade da Espécie , Turquia
20.
Mar Pollut Bull ; 156: 111225, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32366363

RESUMO

Although marine plastic litter has been recognized as a global problem, there are insufficient data on the extent of plastic pollution in the Black Sea. The results from this pilot study of the floating marine litter and microplastics along the Bulgarian Black Sea coast revealed high quantities of floating litter (60.3-93.8 items.km-2). The microplastic concentrations (1.14 × 104-1.91 × 105 items.km-2, 0.33-490.52 g.km-2) were on average lower than those found in other parts of the Black Sea, the Baltic Sea, and the Mediterranean Sea, although the observed ranges were similar. Further studies are needed to elaborate the extent and spatial distribution of this type of pollution in the Black Sea basin.


Assuntos
Monitoramento Ambiental , Plásticos , Mar Negro , Bulgária , Mar Mediterrâneo , Microplásticos , Projetos Piloto
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