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Öğe A New Species of Bithynia (Gastropoda: Bithyniidae) from an Eutrophic Lake Uluabat (South Marmara Region), Northwest of Turkey(Central Fisheries Research Inst, 2015) Odabasi, Deniz Anil; Arslan, NaimeResearches concerning freshwater gastropoda in Turkey have increased significantly in recent years. Among Prosobranchia, Bithyniidae are in an interesting position due to limited knowledge available about species diversity, distribution and ecology. Although most of species belong to Bithyniidae known from Balkans and Greece, only few species of Bithyniids have been known from Turkey so far, including Bithynia tentaculata, B. leachii, B. pseudemmericia, B. phialensis, B. badiella, B. pesicii, B. yildirimi and Pseudobithynia pentheri, P. yildirimi. In this study conducted on Lake Uluabat, a limnobenthos survey was carried out from 12 different sampling sites across the lake. This study aims to describe a new Bithynia from the eutrophic Lake Uluabat located in South Marmara Region of Turkey and provide data about the ecology of the new species that living in a restricted location in the lake.Öğe A new species of Pseudorientalia (Gastropoda: Hydrobiidae) from midwestern Türkiye with notes on Pseudorientalia natolica (Küster, 1853)(Magnolia Press, 2024) Odabasi, Deniz Anil; Mercan, Deniz; Odabasi, Serpil; Arslan, NaimeThe members of the genus Pseudorientalia Radoman, 1983 are small hydrobiid species with characteristic features of the penis and female genitalia. The type locality of the genus is the southern Marmara region, northwestern T & uuml;rkiye. In this study, sampling was carried out in the upper Sakarya River Basin, western -middle Anatolia to obtain hydrobiid specimens, which yielded a new Pseudorientalia . The shell, penis, and female genitalia of the new species are described. The measurement of some shell characters is compared with the other representatives of the genus from T & uuml;rkiye, northern Greece, and some Aegean islands: Samos, Chios and Lesvos. In addition, notes on Pseudorientalia natolica are also given from examination of the type specimens.Öğe A new species within the genus Bithynia (Gastropoda: Bithyniidae) from northwestern Turkiye(Taylor & Francis Ltd, 2024) Akay, Enis; Odabasi, Deniz Anil; Dalkiran, NurhayatIn Turkiye, the family Bithyniidae is represented by two genera: Bithynia (Leach, 1818) and Pseudobithynia (Gloer & Pesic, 2006). Recent studies have shown that Bithyniidae species have a broad distribution across southeastern Europe, including Greece, Montenegro, and Bulgaria. In Turkiye, a total of 14 species have been documented so far, with nine belonging to the genus Bithynia and five to Pseudobithynia. We found a new Bithynia species in Kocacay Stream, situated in the southern Marmara Region. This newly identified species has been compared with all known congeners from nearby ecosystems in Turkiye and neighbouring countries.Öğe Assessment of Surface Water Quality in the Atikhisar Reservoir and Saricay Creek (Canakkale, Turkey)(Foundation Environmental Protection & Research-Fepr, 2010) Akbulut, Mehmet; Kaya, Hasan; Celik, Ekrem Sanver; Odabasi, Deniz Anil; Odabasi, Serpil Sagir; Selvi, KahramanThis study was carried out to evaluate the surface water quality of the Atikhisar Reservoir and Sari ay Creek. Multivariate statistical techniques such as Cluster analysis (CA), principal component analysis (PCA), multidimensional Scaling (MDS), and univariate statistical techniques such as two-way ANOVA were used to analyze the data. Three different groups were formed based on Cluster analysis. Two-way ANOVA test results showed that interaction effects of any variables of the reservoir were non-significant but the interaction effects of pH in the creek were significant. Temperature (T), electrical conductivity (EC), oxygen saturation (OS), biological oxygen demand (BOD), chemical oxygen demand (COD), total phosphate (TP), total nitrate (TN), salinity (Sal), pH, Chl-a, and total suspended solids (TSS) of the reservoir were significantly different among seasons. While differences of T, EC, DO, TP, Chl-a, and TSS of the Sari ay Creek were significant among seasons, only the differences of temperature among the stations were significant. Multi dimensional scaling (MDS) analysis results revealed that the variables such as EC, Sal, OS, T and TN affected the differences among the sites, while the other variable groups were showing a similarity with the COD, BOD, TSS, AD, TP, pH, DO and Chl-a. The principle component analysis (PCA) results showed that the eigenvalues of the first 5 PCA were larger than 1.00, suggesting that they explained 98 % of the total variation.Öğe Bithynia kayrae n. sp (Gastropoda: Bithyniidae), a new species from freshwaters of Biga Peninsula (northwestern Anatolia, Turkey)(E Schweizerbartsche Verlagsbuchhandlung, 2017) Odabasi, Serpil; Odabasi, Deniz AnilBithynia kayrae n. sp. is described from a limnocrene area and small streams (Kirkgozler Kaynagi, Kocaba cayi, and Dumrek cayi) on the Biga Peninsula, northwestern Turkey (Asia Minor). Although this family has been intensively studied, predominantly in the Balkan region, and although several species of bithyniids have been reported from Turkey, species distributions and diversity remain incompletely known.Öğe Bythinella kazdaghensis sp n. (Gastropoda: Rissooidea) from the Mount Ida (Kaz Dagi), Northwestern Turkey(Inst Zoology, Bas, 2014) Odabasi, Deniz Anil; Georgiev, Dilian G.Bythinella, a highly diverse rissooidean genus, has a wide distribution area from the Iberian Peninsula to Asia Minor. More recent research about this genus revealed many taxa especially in the Balkan region. However, very few records were known from Turkey. This study aimed to describe a new species: Bythinella kazdaghensis sp. n. from the Mount Ida (Kaz Dagi) in Northwestern Turkey. Bythinella kazdaghensis sp. n. was compared with the species of Turkey and Greece as well. This new species was found to be similar to B. turca (Radoman, 1976) in terms of shell height.Öğe Changing of mollusca fauna in comparison with water quality: Saricay creek and atikhisar reservoir models (Canakkale-Turkey)(2009) Akbulut, Mehmet; Odabasi, Deniz Anil; Kaya, Hasan; Celik, Ekrem Sanver; Yildirim, M. Zeki; Odabasi, Serpil; Selvi, KahramanSpecies composition, abundance and monthly distribution of the Mollusca fauna and the physicochemical variables of Saricay Creek and Atikhisar Reservoir have been investigated between September 2005-August 2006. Mollusca fauna in Saricay Creek and Atikhisar Reservoir was represented by 21 species of Gastropoda and 8 species of Bivalvia. Diversity, dominance and frequency were recorded monthly. By assessing the data via Shannon-Wiener index, Saricay Creek had an index of 2.58 richness at 8th station while, third station in Atikhisar Reservoir had the poorest with an index of 0.02. According to Bray-Curtis similarity index, the first and third stations were found to be very similar to each other, while 8th and 66 h stations were observed to be the most different from all of the other stations in terms of the dynamics of mollusca fauna. Dreissena polmorpha were the most dominant of 47.16% and frequent species of 48.96%, especially encountered in the Atikhisar Reservoir. The results of One-way Analysis of Similarity (ANOSIM) showed that mollusca compositions were significantly different between sampling sites (p<0.05). ANOSIM and Similarity Percentage analysis (SIMPER) revealed significant differences and a high degree of community dissimilarity within and between the sampling stations. The relationship between the dynamics of organisms and environmental parameters were analyzed using Canonical Correspondence Analysis. This study pointed out that water quality parameters especially COD, BOD, Anionic Detergent, salinity, TP, TN, temperature were effective on the abundance and distribution of Mollusca fauna. © Medwell Journals, 2009.Öğe Changing of Mollusca Fauna In Comparison With Water Quality: Saricay Creek and Atikhisar Reservoir Models (Canakkale-Turkey)(Medwell Online, 2009) Akbulut, Mehmet; Odabasi, Deniz Anil; Kaya, Hasan; Celik, Ekrem Sanver; Yildirim, M. Zeki; Odabasi, Serpil; Selvi, KahramanSpecies composition, abundance and monthly distribution of the Mollusca fauna and the physicochemical variables of Saricay Creek and Atikhisar Reservoir have been investigated between September 2005-August 2006. Mollusca fauna in Saricay Creek and Atikhisar Reservoir was represented by 21 species of Gastropoda and 8 species of Bivalvia. Diversity, dominance and frequency were recorded monthly. By assessing the data via Shannon-Wiener index, Saricay Creek had an index of 2.58 richness at 8th station while, third station in Atikhisar Reservoir had the poorest with an index of 0.02. According to Bray-Curtis similarity index, the first and third stations were found to be very similar to each other, while 8th and 66 h stations were observed to be the most different from all of the other stations in terms of the dynamics of mollusca fauna. Dreissena polmorpha were the most dominant of 47.16% and frequent species of 48.96%, especially encountered in the Atikhisar Reservoir. The results of One-way Analysis of Similarity (ANOSIM) showed that mollusca compositions were significantly different between sampling sites (p<0.05). ANOSIM and Similarity Percentage analysis (SIMPER) revealed significant differences and a high degree of community dissimilarity within and between the sampling stations. The relationship between the dynamics of organisms and environmental parameters were analyzed using Canonical Correspondence Analysis. This study pointed out that water quality parameters especially COD, BOD, Anionic Detergent, salinity, TP, TN, temperature were effective on the abundance and distribution of Mollusca fauna.Öğe DESCRIPTION OF A NEW PSEuDOBITHYNIA N. SP (GASTROPODA: BITHYNIIDAE) FROM NORTHWEST TURKEY(Conchological Soc Great Britain & Ireland, 2013) Odabasi, Deniz Anil; Kebapci, Umit; Akbulut, MehmetThe Family Bithyniidae widely distributed in the Balkans and is represented by two genera in Europe: Bithynia and Pseudobithynia. More recent data about the Bithyniidae shows that the majority of family members are distributed in the Balkans and especially Greece. Seven species of Bithynia but only one of Pseudobithynia is currently known from Turkey. This study is aimed at describing a new species, Pseudobithynia yildirimi n. sp. from the Biga Peninsula in northwestern Turkey. Pseudobithynia yildirimi n. sp. is compared to related taxa in Turkey, as well as in Greece and neighbouring Iran. The penis variability and status of pseudo-maleness in P. yildirimi were also investigated.Öğe Description of Bithynia gonensis sp. nov. (Gastropoda: Bithyniidae) from Gönen Çayı, north-western Türkiye(E Schweizerbartsche Verlagsbuchhandlung, 2024) Odabasi, Deniz Anil; Odabasi, Serpil; Ergul, Halim Aytekin; Zilifli, AytugThis study aims to reveal the freshwater mollusc assemblages from 6 sites sampled along Gonen cayi, a stream which flows into the southern Marmara Sea in north-western Turkiye. The stream was sampled using the multi-habitat sampling method with a hand net. Ten species of freshwater molluscs, most of which are widely distributed in Turkiye, were found in the study area. Among these taxa was an unidentified species of Bithynia, which was only present at 1 site. Its shell and anatomy were compared with other Bithynia species from Turkiye and neighbouring countries and found to differ, which revealed that it is a new species. The discovery of the new species increases the diversity of Bithynia in northern Turkiye to 4 species, and to 11 species for Turkiye. This paper highlights the diversity and endemism of freshwater molluscs in Turkiye and emphasizes the need for further research on the distribution of bithyniid species in the country.Öğe Development of a macroinvertebrate-based multimetric index for biological assessment of streams in the Sakarya River Basin, Turkey(Springer, 2022) Odabasi, Deniz Anil; Odabasi, Serpil; Ergul, Halim Aytekin; Ozkan, Nurcan; Boyaci, Yunus Omer; Baykose, Ahmet; Kayal, MelihThe present study aimed to develop a multimetric index as a biological indication method of water quality using benthic macroinvertebrates for Turkey. A total of 207 operational taxa units were identified from 26 sampling sites through the employment of the multi-habitat method. Water was simultaneously sampled for both in-situ measurements and laboratory analysis in order to obtain the data on water chemistry. Ineligible metrics were excluded from the calculation process together with box-whisker plots and Kruskal-Wallis test (p < 0.05), considering the degree of overlap in the quartile limits (1 degrees-3 degrees). Among ten candidate metrics, four were considered suitable to form a multimetric index through Spearman correlation analysis. The core metrics were standardized with the 3(rd) quartile to obtain the index value. The index responded to a set of environmental variables, and split the ecological conditions into four categories as high, moderate, poor, and bad for the study area. Our results indicate that the multimetric index of the Sakarya River (MMIS) is an effective biological monitoring tool employing macroinvertebrates for biological monitoring in Turkey.Öğe Evaluation of the Antimicrobial Effects of Olive Mill Wastewater Extract Against Food Spoiling/Poisoning, Fish-Pathogenic and Non-Pathogenic Microorganisms(Mdpi, 2024) Yilmaz, Dilek Kahraman; Kesbic, Fevziye Isil; Celik, Ekrem Sanver; Odabasi, Deniz Anil; Yılmaz, Sevdan; Abdel-Latif, Hany M. R.Although antibiotics are the main therapy for bacterial infections, the reports showed that the overuse (or misuse) of antibiotics will results in several problems such as the development of antibiotic-resistant strains, persistence of drug residues, and numerous environmental concerns. Therefore, finding antibiotic alternatives is considered of vital importance. Investigation of the antimicrobial properties of several plant substances and extracts is of great value to replace antibiotics. With this objective, this study aimed to evaluate the antimicrobial activities of an ethanolic extract prepared from olive mill wastewater (OMWW), which is a by-product of olive oil production with considerable environmental burden, against 38 bacterial strains, including fish-associated pathogens, non-pathogenic isolates, collection strains, and one yeast strain, Candida albicans. Disk diffusion, minimum inhibitory concentration (MIC), and minimum bactericidal/fungicidal concentration (MBC/MFC) tests were used to determine the antimicrobial activity of the OMWWE. According to the results, OMWWE provoked strong inhibitory effects against Shewanella baltica strain SY-S145. It also showed a moderate inhibitory effect on Plesiomonas shigelloides strain SY-PS16 and Vibrio anguillarum strain SY-L24. The MIC and MBC of OMWWE on Shewanella baltica SY-S145, Vibrio gigantis strain C24, and V. anguillarum strain SY-L24 were 500 mu g/mL. The MIC and MBC on V. parahaemolyticus ATCC 17802 were 1000 mu g/mL, whereas the values for Aeromonas salmonicida ATCC 33658 were 500 mu g/mL and 1000 mu g/mL, respectively. To put it briefly, the OMWW extract showed high antimicrobial activity and can act as an environmentally friendly additive for the control and prevention of diseases caused by A. veronii, A. hydrophila, P. shigelloides, S. baltica, V. anguillarum, and V. parahaemolyticus. Its active agents also prevented infections of both fish-associated pathogens and food spoiling bacteria, which means it can not only help in the disease control mechanism but also in improving the safety of food by reduction of the microbial contamination.Öğe HARVEST, EXPORT, ECONOMIC, AND LEGAL STATUS OF LAND AND SEA SNAILS IN TURKIYE(Natl Shellfisheries Assoc, 2024) Harlioglu, Muzaffer Mustafa; Odabasi, Deniz Anil; Ahmadova, Konul; Batool, ZahraTurkiye (Turkey) includes distinct environmental conditions, including several types of temperate zones and abundant natural resources, and is a significant hub for the production, export, and regulatory issues of land and sea snails. Studies on species identification have shown that there are over 700 species of snails representing 36 families in Turkiye. The family Helicidae includes Eobania vermiculata, Cornu aspersum, Cantareus apertus, Theba pisana, Helix asemnis, Helix cincta, and Helix lucorum. In Turkiye, C. aspersum, H. cincta, and H. lucorum are the three most economically significant land snail species. The sea snail, Rapana venosa is also harvested. Snails are exported in various forms, such as live, cooked, frozen, canned, and empty shells. Despite snail meat being consumed in prehistoric times, it is only occasionally consumed in Turkiye. Thus, snails are processed in food processing facilities that meet the required standards for export. Consumption of snails is common in many nations throughout the world and, as Turkiye owns approximately 40% of the global snail market, it contributes significantly to the national exports to countries including those in the European Union, South America, the United States, Japan, and China, especially France, Italy, Germany, and Romania. Particularly in the land snail market, suppliers competing with Turkiye include Bulgaria, Romania, Hungary, Albania, Lithuania, Latvia, and Estonia. An increasing trend has been noted in heliciculture in recent years. The sole species of sea snail exported from Turkiye is the Rapa whelk R. venosa, and it is typically sold processed (frozen, shelled, or unshelled). Since 2000, there have been variations in its production levels, but an upward trend has been noted. Between 2012 and 2021, R. venosa, the primary market for which is southeast Asian nations, was primarily exported from Turkiye to France (855.5 tons), South Korea (722.3 tons), the United States (630.9 tons), and Japan (462.9 tons). With an annual average production of 3,650.5 thousand tons of processed sea snails and an income of 26,562,520 (USD) from this production, Turkiye has the biggest market share among the other Black Sea nations. Finally, owing to their superior quality and flavor, edible snail species found in Turkiye are favored. Turkiye is thus one of the major exporting nations. Construction of processing facilities for snails is required, as is ensuring that the microbiological quality meets international regulations for human consumption, to boost production and market share. Improved legal standing is also necessary, e.g., there should be a general restriction on the scope and timing of collecting snails from nature. Scientific advice from subject-matter authorities should be sought to determine harvest regulations.Öğe New Grossuana (Littorinimorpha: Hydrobiidae) species from Mount Kazdagi, northwestern Turkey(Taylor & Francis Ltd, 2022) Odabasi, Deniz Anil; Odabasi, Serpil; Deniz, OzanThe Hydrobiidae family is the most common and diverse taxa of freshwater gastropods in the aquatic ecosystem. Among Hydrobiidae, Grossuana Radoman, 1983 is a tiny spring-inhabitant genus which is mainly distributed in Balkan countries. We surveyed various freshwater ecosystems in the Canakkale Province, northwestern Turkey, including Mount Kazdagi, and found eight of Grossuana which are new to science: G. azizsancari, G. kazdagiana, G. onderi, G. bayramicensis, G. kirkgozlerensis, G. canakkalensis, G. arslanarum, and G. tunceri. The species are described here.Öğe New species of freshwater molluscs from Gokceada (northeastern Aegean Sea), Turkey (Gastropoda: Hydrobiidae, Bythinellidae)(E Schweizerbartsche Verlagsbuchhandlung, 2019) Odabasi, Serpil; Odabasi, Deniz Anil; Acar, SecilFor centuries, scientists have been inspired by island ecosystems in terms of their biodiversity and physical environment. Because freshwater and terrestrial ecosystems of the Aegean Islands have undergone processes of formation and geographical isolation differentiating them from the adjacent mainland, they have attracted many scientists. Although several papers describing the freshwater molluscs of these islands have been published, there is no such study about the Turkish islands of Gokceada and Bozcaada located in the northern Aegean Sea. This study describes the diversity of the freshwater mollusc fauna of Gokceada. Sampling of freshwater snails by kick-net and hand-collection was carried out throughout the island, covering diverse habitats including fountains, streams, and artificial ponds. The findings include the first records of Dreissena polymorpha and Pisidium subtruncatum from Gokceada and the invasive gastropod Physella acuta. Furthermore, we present descriptions of the anatomy and shells of four new species of freshwater snails: Pseudamnicola cirikorum sp. n., Pseudamnicola radeae sp. n., Grossuana kayrae sp. n., and Bythinella gokceadaensis sp. n. We compare these new species (except G. kayrae sp. n.) with previously described congeners from the Sporades, mainland Greece, and western Turkey. Because Grossuana had previously not been recorded from Turkey, G. kayrae is compared with Greek and Balkan (southwestern Thrace) Grossuana species.Öğe Possible Threats of the Presence of Non-Native Invasive Land Snail Species in Tiirkiye(Kafkas Univ, Veteriner Fakultesi Dergisi, 2024) Harlioglu, Muzaffer Mustafa; Batool, Zahra; Odabasi, Deniz Anil; Ahmadova, KonulLand snails, including some economically important species, are commonly found in forests and mountainous regions of T & uuml;rkiye. T & uuml;rkiye's large geomorphological region and four surrounding seas, which offer a variety of malacofauna, help T & uuml;rkiye achieve an endemism grade of over 65%. Despite extensive research over the past few decades, we still lack a sufficient understanding of the species identification of land snails in T & uuml;rkiye, particularly in areas like forested mountain regions, and it is assumed that there are more than 1000 taxa in total. This review emphasizes the existence of invasive non-native snail species in T & uuml;rkiye, such as Arion ater (Linnaeus, 1758) and Arion vulgaris MoquinTandon, 1855, which have a negative impact on agricultural and horticultural output. In addition to these species, Theba pisana, Cornu aspersum, Xeropicta derbentina, Xeropicta krynickii, Cernuella virgata and Eobania vermiculata are also found in T & uuml;rkiye as nonnative land snail species. Moreover, it also places a strong emphasis on the necessity of managing invasive species to reduce their detrimental effects on natural ecosystems by giving examples from the world and covers the predictions about the possible threats that the presence of non-native invasive land snail species in T & uuml;rkiye may pose in the future.Öğe Pseudamnicola thalesi sp. n. (Gastropoda: Truncatelloidea: Hydrobiidae), a new freshwater gastropod species from Western Turkey(Taylor & Francis Ltd, 2020) Odabasi, Deniz Anil; Akay, Enis; Koyuncuoglu, SerdarPseudamnicola Paulucci, 1878 is a circum-Mediterranean genus which contributes substantially to hydrobiid diversity. In Turkey, the genus Pseudamnicola is mainly found in the southern regions. Material collected from an upper branch of Esen Stream in southwestern Anatolia yielded a new species, Pseudamnicola thalesi sp. n. The characters of the shell, head and male genitalia are described and illustrated. The new species is compared with those of its congeners that have been recorded previously in Turkey.Öğe SEASONAL DISTRIBUTION AND COMPOSITION OF BENTHIC MACROINVERTEBRATE COMMUNITIES IN MENDERES CREEK, CANAKKALE, TURKEY(Parlar Scientific Publications (P S P), 2009) Akbulut, Mehmet; Celik, Ekrem Sanver; Odabasi, Deniz Anil; Kaya, Hasan; Selvi, Kahraman; Arslan, Naime; Odabasi, Serpil S.Seasonal changes of proportional distribution, biotic indices, abundance, and frequency of benthic macroinvertebrate communities in Menderes Creek were investigated at 5 stations between November 2005 and July 2006. The fauna included a total of 87 taxa belonging principally to Insecta (52 taxa, especially Chironomidae), Oligochaeta (12 taxa), Mollusca (11 taxa), Hirudinae (7 taxa), and Malacostraca (5 taxa). Mean density was estimated to be 778 individuals m(-2) for the 87 taxa. Mollusca (38.5%) and Insecta (39.9%) are the dominant groups among the macroinvertebrate assemblages. Average Shannon-Wiener diversity index was calculated as 1.41, average Margalef's richness index was 1.27, and average Pielou index was 0.61. The results of one-way analysis of similarity (ANOSIM) indicated that macroinvertebrate compositions were significantly different between sampling sites (p<0.05). ANOSIM and similarity percentage analysis (SIMPER) revealed significant differences and a high degree of community dissimilarity within and between the sampling stations.Öğe The First Record of Chaetogaster limnaei limnaei Baer 1827 (Annelida: Clitellata) on Pseudobithynia yildirimi (Gastropoda: Prosobranchia) from Northwest of Turkey(Central Fisheries Research Inst, 2015) Odabasi, Serpil; Odabasi, Deniz Anil; Arslan, NaimeIn this study, the presence of the Chaetogaster limnaei limnaei Baer, 1827, regarded as ectocommensal on the freshwater Mollusca, was observed on the pallial cavity of Pseudobithynia yildirimi Odabasi et al., 2013. This is the first time the presence of C. limnaei limnaei on the Pseudobithynia genus has been reported. Despite the nonhazardous character of the epizoic worm, its ultra-structural and population level of damage on the narrow-range endemic host should be well measured.Öğe The important freshwaters of the Province of Canakkale and pollution sources(Ege Univ, 2006) Akbulut, Mehmet; Odabasi, Serpil Sagir; Odabasi, Deniz Anil; Celik, Ekrem SanverThe aim of this study is to compile and review physico-chemical features of some important lake, pond, river and reservoir and polluting factors them in Canakkale. There are 234 industrial plants belonging to various sectors in Canakkale. However, considerable amount of fertiliziers are used at the 338.000 hectars agricultural lands. In addition, in the settling areas there are solid waste and sewage problems threating environmental, human health and aquatic ecosystem. This preliminary study will guide scientific studies that will be made later on in the region determining the important freshwaters of Canakkale, polluting agents, and polluted areas.
