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Öğe A Contribution to the Study of Turkish Spider Fauna (Araneae)(INST ZOOLOGY, BAS, 2014) Demir, Hakan; Seyyar, Osman; Turkes, TuncayFour spider species, Agelescape caucasica Guseinov, Marusik & Koponen, 2005, Megalepthyphantes nebulosus (Sundevall, 1830), Micaria bosmansi Kovblyuk & Nadolny, 2008, and Phlegra cinereofasciata (Simon, 1868), are reported as new for the spider fauna of Turkey. Data on the collecting sites and the general distribution of each species are presented.Öğe A new species of the genus Xysticus C. L. Koch from Turkey (Araneae : Thomisidae)(MAGNOLIA PRESS, 2006) Demir, Hakan; Topcu, Aydin; Turkes, TuncayA new species of Xysticus C. L. Koch, 1835 is described from Turkey. Differences between the new species and related species are discussed.Öğe A new spider family record for Turkey (Araneae : Anyphaenidae) aydin Topcu, Tuncay Turkes, Hakan Demir, and Osman Seyyar(AMER ENTOMOL SOC, 2008) Topcu, Aydin; Turkes, Tuncay; Demir, Hakan; Seyyar, OsmanThe spider Anyphaena pontica Weiss, 1988 (Araneac, Anyphaenidae) and Anyphaenidae family are recorded from Turkey for the first time.Öğe A new spider of the genus Troglohyphantes (Araneae: Linyphiidae) from a Turkish cave(MAX KASPAREK VERLAG, 2008) Topcu, Aydin; Turkes, Tuncay; Seyyar, OsmanA new species of Troglohyphantes Joseph, 1881 is described from Turkey. Differences between the new species and related species are discussed. The morphological characters to distinguish this species from the closely related species are indicated and illustrated. Notes on the habitat and some SEM photographs of this species arc also given.Öğe Bat guano as new and attractive chitin and chitosan source(BIOMED CENTRAL LTD, 2014) Kaya, Murat; Seyyar, Osman; Baran, Talat; Turkes, TuncayIntroduction: Chitin is a biopolymer that forms the exoskeleton of arthropods, and is found in the cell walls of fungi. It has a wide range of uses in fields such as cosmetics, pharmacy, medicine, bioengineering, agriculture, textiles and environmental engineering based upon its nontoxic, ecofriendly, biocompability and biodegradability characteristics. Commercially, chitin is obtained from processing the outer skeleton of Crustacea such as shrimp, crab, prawn and crayfish after they have been consumed as food. The study aims to examine the nature of bat guano and to determine if it is a practical source of chitin, which has not been done previously. Results: In this study, the chitin content of dry bat guano samples was found to be 28%. The bat guano, which was collected from Karacamal Cave, came from the bat species Rhinolophus hipposideros. The chitosan yield of this chitin was 79%. The chitin produced from the bat guano was determined to be in the alpha form according to Fourier transform infrared spectroscopy (FTIR) results. The crystallinity of the chitin and chitosan samples was calculated as 85.49 and 58.51% respectively by X-ray crystallography (XRD) experiments. According to scanning electron microscope (SEM) micrographs, the chitin and chitosan structures were shaped like nanofibers. The thermogravimetric analysis (TGA) results showed that both chitin and chitosan had two step weight losses, which are characteristic of these materials. The nitrogen content of the chitin and chitosan was 6.47 and 7.3% respectively according to the elemental analysis results. Conclusions: In this research, it has been observed that bat guano can be considered to be an alternative source of chitin and chitosan to crab, shrimp, crayfish and krill.Öğe Characterization of spider silks weaved by different species living in the Black sea region of Turkey(Int Union Crystallography, 2008) Batat, Pinar; Ide, Semra; Turkes, Tuncay; Mengen, Orhan; Ozcan, Yusuf; Celik, Omer; Kriechbaum, Manfred[Abstract Not Available]Öğe Contributions to the Linyphiidae fauna of Turkey (Arachnida: Araneae)(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2015) Turkes, Tuncay; Karabulut, Hayriye; Demir, Hakan; Seyyar, OsmanAbacoproeces topcui sp. nov. (Araneae: Linyphiidae) is described based on male specimens from Mersin Province in Turkey. Four species, namely Araeoncus tauricus Gnelitsa, 2005; Erigonoplus globipes (L. Koch, 1872); Megalepthyphantes pseudocollinus Saaristo, 1997; and Styloctetor romanus (O.P.-Cambridge, 1872), belonging to this family are new records for the spider fauna of Turkey. Styloctetor Simon, 1884 has been recorded as a new genus for Turkey. Data on collected localities, distribution throughout the world, and genitalia figures of each species are presented.Öğe Description of the females of the spiders Plesiophantes joosti Heimer, 1981 and Araeoncus clavatus Tanasevitch, 1987 from Turkey (Araneae: Linyphiidae)(MAX KASPAREK VERLAG, 2012) Karabulut, Hayriye; Turkes, TuncayPlesiophantes joosti Heimer, 1981 and Araeoncus clavatus Tanasevitch, 1987 were originally described on the basis of single male specimens from Georgia and Armenia, respectively. The females of both species have not yet been described. We redescribe P. joosti based on a series of new specimens including 2 adult males and 6 adult females collected from two localities in the Artvin province of Turkey. A. clavants is redescribed based on 3 adult males and 1 adult female collected from two localities in the Artvin and Ardahan provinces of Turkey. Both species are new records for the spider fauna of Turkey. Drawings of characteristic features, the female genitalia and the male palpal organs arc presented.Öğe Description of the previously unknown female of Drassodes bifidus Kovblyuk & Seyyar, 2009 (Araneae: Gnaphosidae) from Turkey(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2015) Seyyar, Osman; Demir, Hakan; Turkes, TuncayDrassodes bifidus Kovblyuk & Seyyar, 2009, previously known only from one male from southern Turkey (Alanya District, Antalya Province), is redescribed on the basis of newly collected materials. The female of Drassodes bifidus is described for the first time. Illustrations, description, and distribution are presented.Öğe In vitro and in vivo investigation of Argiope bruennichi spider silk-based novel biomaterial for medical use(Wiley, 2024) Turan, Secil Karahisar; Suloglu, Aysun Kilic; Ide, Semra; Turkes, Tuncay; Barlas, NurhayatAs a natural and biocompatible material with high strength and flexibility, spider silk is frequently used in biomedical studies. In this study, the availability of Argiope bruennichi spider silk as a surgical suture material was investigated. The effects of spider silk-based and commercial sutures, with and without Aloe vera coating, on wound healing were evaluated by a rat dorsal skin flap model, postoperatively (7th and 14th days). Biochemical, hematological, histological, immunohistochemical, small angle x-ray scattering (SAXS) analyses and mechanical tests were performed. A. bruennichi silk did not show any cytotoxic effect on the L929 cell line according to MTT and LDH assays, in vitro. The silk materials did not cause any allergic reaction, infection, or systemic effect in rats according to hematological and biochemical analyses. A. bruennichi spider silk group showed a similar healing response to commercial sutures. SAXS analysis showed that the 14th-day applications of A. bruennichi spider silk and A. vera coated commercial suture groups have comparable structural results with control group. In conclusion, A. bruennichi spider silk is biocompatible in line with the parameters examined and shows a healing response similar to the commercial sutures commonly used in the skin.Öğe Mediterranean Black Widow Spider (Latrodectus Tredecimguttatus) Poisoning in a Metropolitan City in Turkey(Emergency Medicine Physicians Assoc Turkey, 2021) Bildik, Fikret; Comruk, Burhan; Yuksek, Basak; Aslaner, Mehmet Ali; Turkes, TuncayIntroduction: Black widow spider bites cause severe poisoning (latrodectism) with symptoms such as muscle spasm, rigidity, pain, vomiting, hypertension, and tachycardia. Although Latrodectus mactans (L. mactans) is the most well-known species to cause latrodectism, it has not been reported in Turkey. We report a poisoning case caused by Latrodectus tredecimguttatus (L. tredecimguttatus) spider a species known to be in Turkey for the first time in the literature. Case: A 35-year-old male patient presented with complaints of pain in the lower extremities and excessive sweating due to a spider bite. Discomfort, agitation, a sweaty appearance, tachycardia, and hypertensive attack were observed in the patient. Because black widow antivenom is not available in Turkey and because of the continuation of symptoms despite treatment for 12 hours in the emergency department, the patient was transferred to the intensive care unit, where he was given IV sedoanalgesia. Nicardipine infusion was administered to treat hypertension attack. The patient's symptoms improved on the fifth day. The dead spider that was brought in was identified by an expert biologist as L. tredecimguttatus. Conclusion: It should be considered that latrodectism due to L. tredecimguttatus spider bite may be resistant to emergent treatment and hospitalization may be required.Öğe Nano scale structural analyses on Turkey/Taiwan originated spiders' cocoons(Int Union Crystallography, 2017) Ide, Semra; Orujalipoor, Ilghar; Chuang, Wei-Tsung; Jeng, U-Ser; Ozcan, Yusuf; Turkes, Tuncay[Abstract Not Available]Öğe Structural characterization of a variety of spider silks from Turkey using different biophysical techniques(IOS PRESS, 2011) Ide, Semra; Bayari, Sevgi Haman; Turkes, Tuncay; Mergen, Y. Orhan; Celik, Omer; Butun, Vural; Kriechbaum, ManfredVarious experimental methods (XRD, FTIR, SAXS, DLS and SEM) were used to investigate structures of the silk samples weaved by spiders in Turkey. Silk samples were collected from the natural habitats belonging to the spider species (i.e., Near Salt Lake/Sereflikochisar,. Ivriz Dam/Eregli-Konya, Karatas Lake/Burdur and several locations in Black Sea Region of Turkey). Among all collected species, Araneidae (Araneus angulatus, Argiope bruennichi, Argiope lobata, Larinoides cornutus), Eresidae (Eresus cinnaberinus), Agelenidae (Agelena labyrinthica), Oecobidae (Uroctea durandi), Miturgidae (Cheiracanthium erraticum), Salticidae (Heliophanus flavipes, Philaeus chrysops), Theridiidae (Steatoda paykulliana) and Gnaphosidae were found significant amongst other spider species. Structural differences and similarities of these species were reported. Diameter range of draglines, inter crystallite distance of nano-size structures, mean size range of nano-structure aggregations, crystallite size range, information about protein content were obtained. The mechanical properties of some silk fibers were also investigated.Öğe The determination of spider species (Araneae) in barley and wheat fields of Northern Cyprus(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2015) Gozuacik, Celalettin; Gullu, Mustafa; Turkes, Tuncay; Konuksal, AydaThis study was carried out to determine the spider fauna in barley and wheat fields of Northern Cyprus. It was conducted in 36 cereal fields of 24 villages in the Lefkosa, Girne, Guzelyurt, Gazimagusa, and Iskele districts in the years 2012 and 2013. In the study, the Oxyopidae (2), Thomisidae (5), Salticidae (2), Araneidae (3), Philodromidae (2), Clubionidae (3), and Theridiidae (1) families from Araneae were determined. Seventeen of the 18 species, excluding Kochiura aulica (C. L. Koch), were found for the first time and included in the fauna of Northern Cyprus.Öğe The first record of the family Prodidomidae (Arachnida: Araneae) in Turkey(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2010) Topcu, Aydin; Turkes, TuncayProdidomus amaranthinus (Lucas, 1846) is the first record of the family Prodidomidae in Turkey. Its characteristic features, drawings of its genitalia, and general habitats of both sexes and descriptions are presented. Data on the collection and distribution of the species all over the world are also given.Öğe Walckenaeria aksoyi sp n. (Araneae : Linyphiidae) from Turkey(VERSITA, 2008) Seyyar, Osman; Demir, Hakan; Turkes, TuncayWalckenaeria aksoyi sp. n. (Araneae: Linyphiidae) is described based on males from Marmaris Province in Turkey.Öğe X-ray Scattering and Diffraction Studies on Spider Silk Cocoons(Int Union Crystallography, 2009) Soylu, Elif Hilal; Ide, Semra; Turkes, Tuncay; Kocatepe, Neslihan; Mergen, Orhan; Celik, Omer[Abstract Not Available]
