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Öğe Dispersal versus vicariance in the Aegean: Combining molecular and morphological phylogenies of eastern Mediterranean Dendarus (Coleoptera: Tenebrionidae) sheds new light on the phylogeography of the Aegean area(Oxford University Press, 2020) Trichas A.; Smirli M.; Papadopoulou A.; Anastasiou I.; Keskin B.; Poulakakis N.The Aegean archipelago, as an 'evolutionary laboratory of nature', is an ideal model for research in phylogeography. In this area, the darkling beetles of the genus Dendarus (distributed from Morocco to the Caucasus) exhibit a high level of diversity with 36 species, 27 of which are island endemics. However, their taxonomy is complex and unstable, having undergone continuous revision to address extensive morphological and ecological plasticity. Here, we examine the phylogenetic relationships of 23 species from Greece and Turkey, using mitochondrial and nuclear DNA sequences and 61 morphological characters, to unveil their phylogeny in the Aegean. This helps to clarify phylogeographic scenarios and historical processes that shaped the observed patterns. The analyses reveal 13 distinct lineages with several para- and polyphyletic cases that correspond to three major phylogroups [south/south-east Aegean (D. foraminosus complex, D. rhodius, D. sporadicus, D. wettsteini); central to north Aegean, Turkey and mainland Greece (D. crenulatus, D. moesiacus group, D. sinuatus complex, D. stygius) and mainland Greece (D. messenius, D. paganettii)], indicating the need for further taxonomic re-evaluation. Lineage topology and phylogeography suggest a spatial and temporal sequence of geographic isolation, following either a vicariant or a dispersal model coincident with major palaeogeographic separations in the Aegean. © 2020 The Linnean Society of London.Öğe Effect of semirecumbent sleep position on severity of obstructive sleep apnea in patients with heart failure(Churchill Livingstone Inc., 2015) Basoglu O.K.; Keskin B.; Tasbakan M.S.; Gurgun C.Background Overnight rostral leg fluid displacement in heart failure (HF) patients is related to the high prevalence and severity of obstructive sleep apnea syndrome (OSAS). We hypothesized that rostral fluid shift would decrease in a semirecumbent (45-degree elevated) position, and evaluated the effect of semirecumbent sleeping on severity of sleep apnea in HF patients with OSAS. Methods and Results Demographic, anthropometric characteristics, and medical history of 30 consecutive patients with HF and OSAS were recorded. The patients underwent 2 polysomnographic procedures within 1 week: 1 while lying flat and the other in a semirecumbent position. Out of 30 patients (mean age 54.7 ± 10.2, 26 men), 16 (53.3%) were obese and 29 (96.7%) had comorbidities other than HF. Mean apnea-hypopnea index was 30.8 ± 20.7 events/h while lying flat which decreased to 17.8 ± 12.1 events/h in semirecumbent position (P <.0001). Similarly, oxygen desaturation index decreased from 22.3 ± 19.8 to 12.7 ± 11.5 events/h (P <.0001), and the percentage of sleep time with oxygen saturation (SpO2) <90% (P =.036) and lowest SpO2 (P =.004) were improved in the semirecumbent position. Furthermore, the percentage of stage N2 sleep decreased from 47.0% while lying flat to 39.6% (P =.014). Conclusions The present findings support that the severity of OSAS decreased significantly in a semirecumbent sleep position in patients with HF. Therefore, semirecumbent sleeping may be a promising therapeutic option in the management of HF-related sleep apnea. © 2015 Elsevier Inc.Öğe Eustenomacidius egeuniversitatis sp.n. – the first record of the tenebrionid genus in Turkey (insecta: Coleoptera)(Turkiye Klinikleri Journal of Medical Sciences, 2017) Keskin B.; Nabozhenko M.V.; Alpagut Keskin N.The new species Eustenomacidius (Caucasohelops) egeuniversitatis sp. n. is described from Southeastern Anatolia (Van Province). The species differs from two other representatives of the subgenus Caucasonotus Nabozhenko, 2006 by the absence of temple grooves (lower aspect of eye having a posterior ventral groove) and shiny body without microsculpture. It is the first record of the genus in Turkey. Data on bionomics and a key to species of the subgenus Caucasonotus are given. Mitochondrial cytochrome oxidase I (cox1) barcoding regions of type specimens were also sequenced and uploaded to GenBank. © TÜBİTAK.Öğe First record of xanthomus cf. ovulus seidlitz, 1895 (coleoptera: tenebrionidae) from turkey(2006) Keskin B.; Ferrer J.[No abstract available]Öğe Life forms and strategies of lichen-feeding darkling beetles (Coleoptera, Tenebrionidae: Helopini)(Maik Nauka Publishing / Springer SBM, 2017) Nabozhenko M.V.; Keskin B.; Nabozhenko S.V.Trophic relations of lichen-feeding darkling beetles of the tribe Helopini in Turkey, the Caucasus, and Anti-Atlas are considered. This group is the most diverse in relict Anatolian forests of Cedrus libani, Abies cilicica, Pinus nigra, Juniperus spp., and Quercus cerris, where multitaxon lichenophagous assemblages exist. Three life strategies for attenuation of interspecific competition are distinguished: (1) differentiation of the consumed lichens, (2) separation of the life forms based on the types of the lichens consumed, and (3) segregation of circadian activity in adults. We assume that adaptation of the Helopini larvae to the soil life promoted their wide distribution in different landscapes by elimination of the limiting factor for completing their life cycles, namely the need for ligneous substrate of old rotting trees. The possibility of using lichen-feeding beetles of the tribe Helopini in ecosystem and lichen indication is considered. © 2017, Pleiades Publishing, Inc.Öğe A new genus and species of darkling beetles of the tribe Helopini (Coleoptera, Tenebrionidae) from Turkey(2010) Nabozhenko M.V.; Keskin B.A new genus and species Microdocnemis xerophilicus gen. et sp. n. of the tenebrionid-beetle tribe Helopini is described from southwestern Turkey. The new genus belongs to the cylindrinotoid group of genera and is closely related to the genus Odocnemis Allard, 1876 in the structure of the male genitalia and female genital tubes and in the denticulation of the inner margin of the fore tibia. Microdocnemis differs from Odocnemis in the following characters: body very weakly flattened dorsally and ventrally; apical part of elytra, body ventrally, and epipleura with hairs; anal sternite with double bordering; apical margins of tibiae with short thick spines. The only species of the new genus inhabits xerophytic stony biotopes and has been found under stones; the species of the genus Odocnemis live on tree trunks covered with lichens. © 2010 Pleiades Publishing, Ltd.Öğe The new genus taurohelops keskin and nabozhenko (Coleoptera: Tenebrionidae) from Anatolia, Turkey(Coleopterists Society, 2015) Keskin B.; Nabozhenko M.The new tenebrionid genus Taurohelops Keskin and Nabozhenko, new genus (tribe Helopini), including two species from Central Taurus Mountains, Turkey, is described. The new genus belongs to the Cylindrinotus genus-group but differs from other genera of the tribe Helopini by structures of the male tibiae, abdominal ventrites 3-5, male aedeagus, and presence of coeloconic sensilla on the pronotum. One new combination is established: Taurohelops incultus (Allard, 1877), new combination (from Odocnemis Allard). One new species, Taurohelops triplehorni Keskin and Nabozhenko, new species, is described. A lectotype for Helops lordiscelis Reitter, 1900 is designated. Data on distribution, bionomics and morphology of the two species of Taurohelops are given.Öğe A new record for the tenebrionidae (coleoptera) fauna of turkey: Mesostena puncticollis solier, 1835 (pimeliinae: Tentyriini)(2005) Keskin B.[No abstract available]Öğe A new record for the tenebrionidae fauna of turkey: akis subtricostata redtenbacher, 1850 (coleoptera: tenebrionidae)(2008) Keskin B.; Yağmur E.A.[No abstract available]Öğe A new species and new records of the genus Nalassus Mulsant, 1854 (Coleoptera: Tenebrionidae: Helopini) from Turkey(2010) Keskin B.; Nabozhenko M.V.A new species Nalassus bozdagus sp. nov. is described from the Aegean Region of Turkey (Bozdag ridge). The new species differs from all known Nalassus in the following characters: the hair spot on first and second abdominal sternites of male is absent, temple grooves are absent, exosceleton very strongly sclerotized. New records of Nalassus Mulsant, 1854 from Turkey are provided. Two species new for the fauna of Turkey: Nalassus (Helopondrus) gloriosus (Faldermann, 1837) and N. (Helopocerodes) faldermanni (Faldermann, 1837). © Fundacja Natura optima dux.Öğe A new species of Otiorhynchus germar, 1822 (Coleoptera: Curculionidae: Entiminae) from Anatolia, Turkey(2007) Keskin B.; Cevik I.E.A new species of Otiorhynchus is described from western Turkey. Otiorhynchus (Pliadonus) lilligi sp. n., is easily distinguishable from O. (Pliadonus) frater Styerlyn, 1861 by the existence of a sharp tooth on the mesofemora of the former.Öğe A new species of the genus otiorhynchus germar, 1822 (coleoptera: curculionidae) from western anatolia(2007) Keskin B.[No abstract available]Öğe A new species of the genus Otiorhynchus GERMAR, 1822 (Coleoptera: Curculionidae: Entiminae) from Western Anatolia (Turkey)(2007) Keskin B.A new Otiorhynchus GERMAR, 1822 species from Western Turkey is described and illustrated. O. (Paracryphiphorus) magnanoi sp. n. is closely related to O. (Paracryphiphorus) bicostatus BOHEMAN IN SCHÖNHERR, 1843. Copyright © 2007. Magnolia Press.Öğe A review of the genus gnaptor brullé 1832 (Coleoptera, Tenebrionidae) with description of a new species from Turkey(Russian Academy of Sciences, 2015) Chigray I.A.; Nabozhenko M.V.; Keskin B.The new species Gnaptor medvedevi sp. n. is described from southwestern Turkey. The new species is close to G. spinimanus but differs from it by narrower paramers, gastral spicula and sculpture of prothoracic hypomera. The new monotypic subgenus Plesiognaptor subgen. n. is described for G. prolixus, as well as the distribution for each species. New data on the G. prolixus range are added. This species is known from Turkey (Izmir, Ayd n, Afyon, Konya, Isparta Provinces) and Iran (Elburs, the first record for the country). A key and illustrations for all species of the genus Gnaptor are given. © 2015 r.Öğe A review of the genus Gnaptor Brullé, 1832 (Coleoptera, Tenebrionidae) with description of a new species from Turkey(Maik Nauka Publishing / Springer SBM, 2015) Chigray I.A.; Nabozhenko M.V.; Keskin B.The new species Gnaptor medvedevi sp. n. is described from southwestern Turkey. The new species is closely related to G. spinimanus but differs from it in narrower parameres, in the structure of the spiculum gastrale, and in the sculpture of the prothoracic hypomera. The new monotypical subgenus Plesiognaptor subgen. n. is described for G. prolixus; the distribution of each species is described. New data on the range of G. prolixus are added. This species is known from Turkey (Izmir, Aydin, Afyon, Konya, and Isparta provinces) and Iran (Elburs, the first record for the country). A key to and illustrations for all the species of the genus Gnaptor are given. © 2015, Pleiades Publishing, Inc.Öğe Review of the genus Odocnemis Allard, 1876: O. Korbi Species-Group (Coleoptera: Tenebrionidae: Helopini)(2011) Keskin B.; Nabozhenko M.V.Review of the O. korbi species-group is given. 5 species and 1 subspecies, including four new taxa are known from Southern Anatolia: O. korbi (Reitter, 1902), O. perarmatus Nabozhenko et Tich, 2006, O. svetlanae sp. nov. svetlanae subsp. nov., O. svetlanae beydagensis subsp. nov., O. nasreddini sp. nov., O. malgorzatae sp. nov. Morphological characters of species-group, bionomics and distribution are discussed. © Fundacja Natura optima dux.Öğe Taxonomic Review of the Genera Nalassus Mulsant, 1854 and Turkonalassus gen. nov. of Turkey (Coleoptera: Tenebrionidae)(Muzeum i Instytut Zoologii, 2017) Keskin B.; Nabozhenko M.; Alpagut-Keskin N.A brief review of the genus Nalassus Mulsant, 1854 of Turkey is given. The new genus Turkonalassus gen. nov. (type species Helops adimonius Allard, 1876) is described. Species of the newly described genus are superficially similar to representatives of the subgenus Pelorinus of Probaticus (subtribe Helopina), but belong to the subtribe Cylindrinotina and are close to the genus Nalassus from which they differ by the absence of temple grooves ventrally (lower aspect of eye without ventral groove). The following species are included in Turkonalassus: Turkonalassus adimonius (Allard, 1876) (from Probaticus), Turkonalassus pentheri (Reitter, 1905), comb. nov. (from Probaticus), Turkonalassus bozdagus Keskin et Nabozhenko, 2010, comb. nov. (from Nalassus), Turkonalassus pineus sp. nov., Turkonalassus quercanus sp. nov., Turkonalassus petrophilus sp. nov., Turkonalassus macedonicus sp. nov. The last species is described from Greece and Bulgaria, the other species are known from Turkey. A new synonymy is established: Nalassus Mulsant, 1854 = Helopocerodes Reitter, 1922, syn. nov.; Turkonalassus pentheri = Cylindronotus hoberlandtii Kaszab, 1959, syn. nov. Lectotype of Helops pentheri Reitter, 1905 is designated. A key to the species of the genus Turkonalassus and genus Nalassus from Turkey is given. © Museum and Institute of Zoology PAS.
