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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 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 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 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 Daily Variations of Chlorophyll-a, Environmental Parameters And Nutrients: Saricay Creek As An Exemplary (Canakkale, Turkey)(Foundation Environmental Protection & Research-Fepr, 2009) Odabasi, Serpil; Buyukates, YesimIn this study, it was aimed to examine the relationships among chlorophyll-a, environmental parameters such as temperature, salinity, pH and dissolved oxygen (DO) and nutrients Total Nitrogen, Total Phosphorus, Ammonia-nitrogen and Silicate (TN, TP, NH4 and SiO2, respectively) between 8 July and 6 August, 2004 in Sari ay Creek. During sampling periods, temperature values followed the usual seasonal values, while DO and pH changed considerably, and ranged between 1,23-13,1 mg l(-1) and 7,48-9,33, respectively. Chlorophyll-a concentration changed between 0,98-34,45 mu g l(-1), while TP, TN, NH4 and SiO2 ranged between 0,21-0,91 mg l(-1), 4,78-107,24 mg l(-1), 0,04-3,68 mg l(-1), 0,16-22,4 mg l(-1), respectively There was no significant correlation among chlorophyll-a and nutrients. However, there was significant correlation between environmental parameters, such as pH (p=0,23), temperature (p=0,28), DO (p=0,23) and chlorophyll-a (p<0.01). Results of the environmental parameters indicated that the pollution level increased irregularly in a short time and there was on instant reverse relation between inorganic nutrients and chlorophyll-a.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 First Record of Branchiobdella kozarovi Subchev, 1978 from European Part of Turkey(Inst Zoology, Bas, 2016) Odabasi, Serpil; Arslan, Naime; Odabasi, Deniz AnulMany branchiobdellid worms were observed on the narrow-clawed crayfish, Astacus leptodactylus ESCHSCHOLTZ, 1823, from Ipsala-Yenikarpuzlu Pond (Turkey, Edirne Region). A total of 53 branchiiobdellidans were found on the walking legs and the gills of eight crayfish individualsspecimen. They were identified as Branchiobdella kozarovi SUBCHEV, 1978. This is the first report of branchiobdellidans and B. kozarovi in particular, from the European part of Turkey.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 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.
