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Öğe Chemical composition, antimicrobial, antioxidant and anthocyanin activities of mosses (Cinclidotus fontinaloides (Hedw.) P.Beauv. and Palustriella commutata (Hedw.) Ochyra) gathered from Turkey(Taylor & Francis Ltd, 2017) Tonguç Yayıntaş, Özlem; Alpaslan, Duygu; Karagül Yüceer, Yonca; Yılmaz, Selehattin; Şahiner, NurettinCinclidotus fontinaloides (Hedw.) P. Beauv. and Palustriella commutata (Hedw.) Ochyra were used in this study. The chemical composition of mosses in the ethanol and water extract was determined using GC-MS and FT-IR. Antioxidant activities of moss extracts were tested by total phenol and ABTS methods. Trolox equivalent value (TEAC) of mosses was calculated as 26 +/- 0.32 and 10 +/- 0.22 mg/g. The amounts of the flavonoid compounds were calculated as mg gallic acid. Gallic acid equivalent value of mosses was calculated as 587 +/- 0.55 and 496 +/- 0.22 mg/g. The extracts antimicrobial activity was tested against Escherichia coli (ATCC 8739), Bacillus subtilis (ATCC 6633), Staphylococcus aureus (ATCC 6538), Pseudomonas aeruginosa (ATCC 10145) and Candida albicans (ATCC 10231). Significant antibacterial effect was observed for C. fontinaloides and P. commutata in ethanol extract. Total anthocyanin activities of C. fontinaloides and P. commutata were determined as 50 +/- 0.17 and 144 +/- 0.33 mg/L.Öğe Heavy Metal and Mineral Composition of Soil, Atmospheric Deposition, and Mosses with Regard to Integrated Pollution Assessment Approach(Springer, 2021) Menteşe, Sibel; Tonguç Yayıntaş, Özlem; Baş, Batuhan; İrkin, Latife Ceyda; Yılmaz, SelehattinThe fact that there are no real borders between the biosphere, atmosphere, lithosphere, and hydrosphere means that environmental pollution monitoring studies should not only include one of the environmental spheres. Thus, integrated environmental pollution assessment studies conducted in the biosphere, lithosphere, and atmosphere promote the “whole system” approach. In this study, the aim was to determine the pollution in the atmosphere, soil, and plants by taking advantage of the high pollution accumulation characteristics of the mosses. Prevailing wind has the potential to distribute pollutants emitted into the air throughout its path. With this regard, soil, mosses, and atmospheric deposition samples were collected in Çanakkale, Turkey, in two seasons. Concentrations of selected elements were measured by Inductively Coupled Plasma-Mass Spectrometry. The enrichment factor of the selected elements in the soil, moss, and deposition samples was calculated. The highest enrichments were found for Lead in atmospheric deposition, Arsenic in soil, and Mercury in moss samples. Cobalt and chromium accumulated more in mosses than in soil. Elevated arsenic levels found in the samples can pose a great risk for public health and agriculture. The study result showed that the elemental composition of the samples was influenced by the enhanced air plume dispersion of anthropogenic pollution sources along the Northeast-Southwest directions due to wind characteristics in the province. As expected, strong correlations were found among the moss, soil, and atmospheric deposition samples indicating the vital interactions between the environmental components.Öğe The Presence of the Monogenean Helminth Grubea cochlear Diesing, 1858 from Chub Mackerel (Scomber japonicus) Caught in The Çanakkale Strait, Türkiye(Çanakkale Onsekiz Mart Üniversitesi, 2023) Aldık, Ruhay; Çakır, FikretIn this study, 75 chub mackerels that were caught in the Canakkale Strait in Türkiye between October to December, 2019, were examined for the presence of parasites. The length and weight of all fish were measured and the external body area, oral cavity, nostrils, fins, and gills were examined. Gill samples were examined under a stereomicroscope and all suspicious findings were preserved in 99.99% ethanol. The mean length and weight of fish were 24.84±0.39cm and 146.01±7.16 gr, respectively. It was determined that the collected parasite is Grubea cochlear, a monogenic helminth belonging to the Mazocraeidea family. The chub mackerel, in which the specimen of G. cochlera was isolated among the gill filaments, was a female with a total length of 18.5 cm and a weight of 49.80 gr. This finding of Grubea cochlear isolated from the gills of chub mackerel is the first record of this species in this region.Öğe Early life traits of the common two-banded seabream, Diplodus vulgaris (Perciformes: Sparidae), inhabiting the shallow waters of Gökçeada Island, Turkey(Universidad Autonoma de Baja California, 2023) Altın, AytaçDaily growth rates and pelagic larval duration were investigated in the common two-banded seabream (Diplodus vulgaris). Fish were sampled using a beach seine from the shallow waters of Gökçeada Island, Turkey, between June 2013 and June 2014. The minimum and maximum daily age estimates were 41 and 339 d, respectively. The mean daily growth rate of young-of-the-year D. vulgaris was 0.330 mm·d–1. Our results showed that D. vulgaris exhibits a Type Ia settlement-mark with a pelagic larval duration of 29 d. The hatching period occurred from November to April. The maximum hatching frequencies were observed in winter, when the water temperature was relatively low. The natural logarithm of young-of-the-year abundance data was plotted against age, and the instant mortality coefficients were estimated. The relationships between total length and otolith morphometric measurements (otolith length [OL], width [OW], and radius [OR]) were defined by linear equations. Furthermore, it was observed that this ratio exhibited a linear relationship with OL, OW, and OR and total length and daily age.Öğe Spatio-Temporal Patterns of Abundance and Biomass of Parapenaeus longirostris (Lucas, 1846) in the Sea of Marmara, Turkey(İstanbul University Faculty of Aquatic Sciences, 2021) İnceoğlu, Haşim; İşmen, Ali; İhsanoğlu, Mukadder Arslan; Kocabaş, Engin; Daban, İsmail Burak; Çardak, Mine; Şirin, Murat; Yığın, Cahide CiğdemThe present research study investigated the catch-per-unit-effort (CPUE, kg/h) and biomass of Parapenaeus longirostris in consideration of three parameters, i.e. seasons, regions, and depth levels. Beam trawls were used to collect the specimens at a total of 229 sampling stations in the Sea of Marmara between September 2011 and July 2014. In the Sea of Marmara, the mean CPUE of P. longirostris was calculated to be 8.4 }0.5 kg h-1 , and the mean biomass to be 354 kg/km-2. The mean CPUE value was at its highest in summer and autumn, and the lowest was observed in winter and spring. The by-region mean CPUE value of P. longirostris was the highest in the northern Sea of Marmara (14.3 }1.9 kg h-1), and the lowest was detected in the south (3.6 }1.0 kg h-1). The highest biomass value was found at a depth of 50-100 m, in the northern Sea of Marmara, while the lowest was calculated in the southeastern Sea of Marmara.Öğe A comparative view to heavy metal pollution in soil and rainwater in Çanakkale, Turkey(ACG Publications, 2021) Menteşe, Sibel; Yayıntaş, Özlem Tonguç; Baş, Batuhan; İrkin, Latife Ceyda; Yılmaz, SelehattinOn Earth, atmosphere interact with crust and thus simultaneously monitoring of environmental pollution in both parts of the environment is important. Soil and rainwater samples were taken in different parts of Çanakkale, Turkey, in two seasons. Study sites laid along with the prevailing wind direction (from NE to SW) as wind has the potential to distribute pollutants emitted into the air throughout its path. The concentrations of selected elements were determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Also, physical parameters such as pH, temperature, electrical conductivity of the rainwater and temperature and pH value of the soil samples were measured together with the meteorological parameters. Seasonal differences for the selected elements were insignificant in the soil samples (p>0.05), while some elements showed seasonal variations in the rainwater samples (p[removed] Pb > Mn> Cu> Cd > Ni> Cr in the rainwater samples and Mn > Zn > Cu > Pb > Cr > Ni > Co in the soil samples, respectively. The highest enrichments were found for Pb in the rainwater and As in the soil samples. Elevated As levels occurred in the samples can pose a great risk for public health and agriculture.Öğe Investigation of Apoptotic and Inflammatory Activity in Liver Tissue of Rats Fed with Clam (Pecten maximus, Linnaeus 1758)(Sciendo, 2021) İrkin, Latife CeydaOne of the most important threats for living things in aquatic ecosystems is environmental pollution. The changes in water quality caused by environmental pollution also reduce the quality of life for organisms in the environment. Among these, the crustaceans which are most affected by the negative changes of environment, fed by the filtra-tion method, are seen as pollution indicator. The consumption of these creatures reaches all steps of the pyramid, especially humans, through the food chain. People who frequently use seafood in their diets may be affected by these negative changes. Heavy metal contents of the clams obtained from Dardanelles were determined by the ICP-OES. Twenty-four female Wistar albino rats were fed for 30 days with the experimental diet using clams (Pecten maximus), which was dried and formed into pellets and added to the food in certain proportions. At the end of the study, the subjects were sacrificed under anesthesia, liver tissues were taken, and histochemical examination was performed. TUNEL method was performed to detect apoptotic activity, and immunohistochemical staining with TNF-α and NF-κB antibodies to determine inflammation. Concluding from the results, it was observed that the de-generation of vital digestive system tissues such as liver was inevitable in living creatures that frequently consume seafood obtained from unhealthy environment in their daily diets. The high analysis values of the heavy metal (P. maximus) in food additive can be considered as a reason for histopathological results.Öğe Antibiotic resistance and virulence genes in Enterococcus species isolated from raw and processed seafood(Springer, 2022) Çardak, Mine; Özmen Toğay, Sine; Ay, Mustafa; Karaalioğlu, Onur; Erol, Özlem; Bağcı, UfukThis study evaluated the antibiotic resistance characteristics and virulence genes of enterococci isolated from raw and processed seafood sold in the Marmara Region, Turkey. In this context, the enterococcal load was determined as between 1.0 and 2.5 log CFU/g in 39 of a total of 397 samples. It was determined that 117 strains isolated from the samples belonged to Enterococcus gallinarum, E. casseliflavus, E. durans, E. faecium, and E. faecalis species. Erythromycin, tetracycline, streptomycin, and gentamicin resistance was observed, whereas the tetM, ermB, aac(6')-aph(2'')-la genes were found in a majority of the isolates. It was also determined that the isolates carried the agg2 and gelE virulence genes. When all these results are evaluated, the presence of these isolates in aquatic products may pose a risk in terms of food safety and public health.Öğe Investigation of the relationship between homalothecium sericeum(HedW.) schimp. And Cu/Zn sod enzyme in rat tissues with the immunohistochemical method(Parlar Scientific Publications, 2021) İrkin, Latife Ceyda; Yayıntaş, Özlem Tonguç; Çakina, SuatIn this study, the aim was to determine the production of Cu/Zn SOD (SOD1) enzyme in the heart, liver, and pancreas of rats administered Homalothecium sericeum extract. The effect of the use of moss extract has not been studied for Cu/Zn SOD enzyme production in different tissues of rats or for the cytotoxic effects on these tissues. In our study, 50 mg/kg (Group I, n: 6), 100 mg/kg (Group II, n: 6), 300 mg/kg (Group III, n: 6) and 500 mg/kg (Group IV, n: 6) doses of moss extract and 1 ml of distilled water (Group V, n: 6) were administered by gavage to 30 female rats for 30 days. Cu/Zn SOD enzyme immunoreactivity was investigated in liver, heart and pancreas tissues depending on the increase in moss extract dose. To determine Cu/Zn SOD immunoreactivity, after the application of Cu/Zn SOD primary antibodies using immunohistochemical staining methods, DAP was used as coloring and hematoxylin was used as inverse dye. The stained tissue samples were evaluated with an image analysis system under the research microscope and the study used the Kruskal-Wallis Test, one of the nonparametric tests, to detect the differences between the groups statistically.
