Oxynoemacheilus veyseli, a new nemacheilid species from the upper aras river drainage of Turkey (Teleostei: Nemacheilidae)

A new species of nemacheilid fish, Oxynoemacheilus veyseli sp. n., is described from the upper Aras River drainage, Kars Province, Turkey. The species differs from its congeners in the Caspian Sea basin in the combination of the following characters: flank with a set of mid-lateral elongated, irregular-shaped dark brown blotches, sometimes fused, interrupted by lateral line; dorsum with three or four separated dark-brown roundish to elongated blotches predorsally and postdorsally; a deep and marked suborbital groove and many small unculi on rays of pectoral and dorsal-fin in male; small eye diameter (9.6-13.7 %HL); a short dorsal-fin base (10.1-13.3 %SL); 3-4 lateral and 3 central pores in supratemporal canal; deep body and caudal peduncle (17.3-19.4 and 10.2-11.4 %SL, respectively) and slightly emarginated caudal fin

Freshwater fishes of Turkey; a revised and updated annotated checklist

The current status of the inland waters ichthyofauna of Turkey is revised, and an updated checklist of the freshwater fishes is presented. A total of 368 fish species live in the inland waters of Turkey. Among these, 3 species are globally extinct, 5 species are extinct in Turkey, 28 species are non-native and 153 species are considered as endemic to Turkey. We recognise pronounced species richness and a high degree of endemism of the Turkish ichthyofauna (41.58%). Orders with the largest numbers of species in the ichthyofauna of Turkey are the Cypriniformes 247 species), Perciformes (43 species), Salmoniformes (21 species), Cyprinodontiformes (15 species), Siluriformes (10 species), Acipenseriformes (8 species) and Clupeiformes (8 species). At the family level, the Cyprinidae has the greatest number of species (188 species; 51.1% of the total species), followed by the Nemacheilidae (39), Salmonidae (21 species), Cobitidae (20 species), Gobiidae (18 species) and Cyprinodontidea (14 species)

A taxonomic evalution of Alburnus sellal heckel, 1843 and alburnus adanensis Battalgazi, 1944: Based on morphological characters and mitochondrial DNA sequences

Alburnus sellal inhabits Ceyhan, Euphrates, Orontes and Tigris river basins whereas Alburnus adanensis is geographically restricted to Ceyhan and Seyhan river basins. Due to the very similar morphometric and meristic characteristics, discrimination of these two species is difficult. The most important diagnostic character is the scale numbers in lateral line (73-80 in A. sellal vs 60-66 in A. adanensis) and pronounced lack of the dark grey band on side of the body. In order to clarify the taxonomic status of the A. sellal and A. adanensis, a total of 27 morphological characters and the nucleotide sequence variation of mitochondrial cytochrome b (cyt b) and cytochrome oxidase I (COI) genes were analyzed on the specimens which were from Seyhan, Ceyhan, lower Euphrates and Orontes river basins. The results show high similarity between A. sellal and A. adanensis based on the morphometric and the morphological characters using Principal Component Analyses (PCA). In addition genetic distance of the specimens belonging to two species between 0.000 to 0.011 using COI and cyt b genes sequences. Therefore, our results based on morphology, molecules and nomenclatural priority pointed out that A. adanensis should be evaluated as a synonym of A. sellal.Nevsehir Hacı Bektas Veli University, Scientific Research Project

First record and distribution of Alburnus qalilus Krupp, 1992 (Teleostei: Cyprinidae) in Turkey

The Syrian spotted bleak, Alburnus qalilus Krupp, 1992 was described from the Nahr al-Hawaiz, the Mediterranean coastal drainage, Syria. The species differs from all other members of the genus Alburnus in the following combination of characters: 8 branched dorsal-fin rays, 9-11 branched anal-fin rays, 43-47 scales in the lateral line and 9-11 gill rakers on the lower limb of the first gill arch. In the present study, the occurrence of this species is reported for the first time from the Turkish parts of the Orontes river basin in Kilis, Gaziantep and Hatay provinces. Our new data indicate that the home range of this species has been increased towards the Turkish parts of the Orontes river basin

Using neuropsychometric measurements in the differential diagnosis of specific learning disability

Introduction: The aim of this study was to develop a neuropsychometric battery for the differential diagnosis of specific learning disability (SLD), with specific respect to attention deficit hyperactivity disorder (ADHD), and to help resolve the conflicting results in the literature by an integrative utilization of scores on both the Bannatyne categories and neuropsychological tests. Methods: The sample included 168 primary school boys who were assigned to SLD (n=21), ADHD (n=45), SLD and ADHD (n=57), and control groups (n=45). The exclusion criteria were a neurological or psychiatric comorbidity other than ADHD, a level of anxiety and/or depression above the cutoff score, medication affecting cognitive processes, visual and/or auditory disorders, and an intelligence level outside the IQ range of 85–129. Psychometric scores were obtained from the SLD Battery and Wechsler Intelligence Scale for Children-Revised in the form of Bannatyne category scores. Neuropsychological scores were from the Visual–Aural Digit Span Test-Form B, Serial Digit Learning Test, Judgment of Line Orientation, and Mangina Test. The battery was called the Integrative Battery of SLD. Results: The correctness of estimation for classifying cases into the diagnostic dyads (SLD/ADHD, SLD/SLD+ADHD, and SLD+ADHD/ADHD) by an integrative utilization of both the Bannatyne category scores (n=4) and scores from the four neuropsychological tests (n=10) was 92.4%, 81.4%, and 71.8%, respectively. These proportions were generally higher than those obtained using the Bannatyne category scores alone (86.4%, 75.5%, and 73.1%, respectively). The same trend was seen in the classification of children into diagnostic and control groups. However, the proportion of the correctness of estimation was higher than that obtained for the diagnostic dyads. Conclusion: When conducted using appropriately chosen research designs and statistical techniques and if confounding variables are sufficiently controlled, a neuropsychometric battery that includes capacities that relate to intelligence (Bannatyne categories) and those that relate to neurocognitive processes (neuropsychological tests) can be useful in the differential diagnosis of SLD

New localities of scardinius elmaliensis bogutskaya, 1997 (Teleostei: Cyprinidae) and its phylogenetic relationship based on mt DNA cytb region sequences

This study was conducted to report five new localities out of its type locality for Scardinius elmaliensis in the Western Mediterranean Basin of Turkey by providing their morphological characteristics, and their phylogenetic relationship based on mtDNA Cytb region. The results revealed significant differences of all studied populations in terms of the morphometric characters despite their low genetic differences, but their meristic characters were not different. All six studied populations of S. elmaliensis including that of type locality formed a monophyletic group with S. erythrophthalmus as sister group. The molecular result confirmed distinction of S. elmaliensis from S. erythrophthalmus based on Cytb genetic distance of 1.6-1.8%. The occurrence of S. elmaliensis out of type locality was firstly reported in this study. Such knowledge is important for future conservation strategies and habitat management of this species

Morphological flexibility of oxynoemacheilus seyhanensis in different habitats of Turkish inland waters: A case of error in describing a populations as distinct species

This study was conducted to investigate the morphological variation between seven populations of Oxynoemacheilus seyhanensis inhabiting three basins of Turkish inland waters. For this purpose, a total of 71 specimens were collected from Yildizeli, Taşköprü, Suşehri rivers (Kizilirmak basin), Büyükpotuklu, Pinarbaşi and Örenşehir rivers (Seyhan basin) and Akdağmadeni River (Yesilirmak basin). A total of 31 morphometric characteristics were measured. After standardization, data were analyzed using one-way ANOVA and Duncan, Kruskal-Wallis tests, principal component analysis (PCA), canonical variate analysis (CVA), non-parametric MANOVA and cluster analysis. The results showed significant differences in 26 traits between the studied populations of O. seyhanensis (P<0.05) revealing a high morphological flexibility of this deep-bodied species

Scattering from a rectangular groove with resistive walls

Bu &ccedil;alışmada, kanal d&uuml;şey duvarları farklı rezistif y&uuml;zeylere sahip, yatay duvarları m&uuml;kemmel iletken ve bu duvarların arası elektriksel ve manyetik olarak ge&ccedil;irgen malzemelerle doldurulmuş bir oluktan Ez polarize d&uuml;zlemsel dalgaların kırınımı incelenmektedir. Problem sınır koşulları kullanılarak form&uuml;le edilmiş ve Fourier d&ouml;n&uuml;ş&uuml;m&uuml; yardımıyla &uuml;&ccedil;&uuml;nc&uuml; t&uuml;rden bir modifiye Wiener-Hopf denkleme indirgenmiştir. Bu denklemin ayrıştırılması sonucunda ortaya, ikinci tipten iki adet Fredholm integral denklemi &ccedil;ıkmıştır. Elde edilen denklemlerdeki integraller asimptotik olarak değerlendirilmiştir ve sonsuz boyutlu cebirsel denklem sisteminin &ccedil;&ouml;z&uuml;m&uuml; sayısal olarak yapılmıştır. İncelenen yapıya ilişkin sa&ccedil;ılan alanın ayrıntılı analizi semer noktası y&ouml;nteminden faydalanılarak yapılmıştır. Fiziksel parametrelerin değişiminin&nbsp; kırınım olayına etkisi sayısal verilerle g&ouml;sterilmiştir.Anahtar Kelimeler: Oluk, sa&ccedil;ılım, Wiener-Hopf tekniği.The analysis of electromagnetic wave scattering from rectangular grooves has received much attention recently in connection with the prediction and reduction of the radar cross-section of a target. There have been a number of investigations on the scattering by grooves based on high frequency (ray-based) and low frequency (numerical) techniques as well as a hybrid ray. The Wiener-Hopf technique is one of the powerful rigorous approaches for analyzing wave scattering associated with canonical geometries. In this study plane wave diffraction from a rectangular groove having resistive vertical walls with material loading is analyzed for Ez polarization. The basic procedure adopted in this work is to take the Fourier transform of the reduced wave equation and apply the boundary conditions in the transform domain. This leads to a modified Wiener-Hopf equation (MWHE) of the third kind which can be reduced to a pair of simultaneous Fredholm integral equations of the second kind. The approximate solution of this MWHE involves two sets of infinite number of unknown constants satisfying two infinite systems of linear algebraic equations. The scattered field is evaluated by taking the inverse Fourier transform and applying the saddle point method. Numerical results showing the effects of groove depth, vertical wall resistivity  and  dielectric loading on scattered field are  presented. Keywords: Scattering, groove, Wiener-Hopf technique

Pathogenetic and Prognostic Importance of Cyclin D1, Estrogen Receptor, and TAG72 in Cutaneous Vascular Tumors and Pericytic Tumors

Objective: The present study aims to investigate the presence of pericyte loss in malignant vascular tumors and investigate the expression of cell cycle regulators, cyclin D1 and estrogen receptor (ER), and tumor-associated glycoprotein 72 (TAG72) in tumor cells and tumor microenvironment in benign/malignant vascular tumors and benign/malignant pericytic tumors. Methods: Cyclin D1, ER, and TAG72 were examined by immunohistochemistry in 38 cases of tumors of vascular and pericytic origins. The data on metastasis and prognosis of malignant cases were retrieved from the hospital information system. Results: The 38 patients included the following types of neoplasms: hemangioma (n=16), glomus tumor (n=9), epithelioid angiosarcoma (n=8), epithelioid hemangioendothelioma (n=3), infantile hemangiopericytoma (n=1), and malignant glomus tumor (n=1). No statistically significant difference was found in cyclin D1 expression between pericyte-derived tumors and malignant vascular tumors (p=0.508). When benign-malignant vascular and pericytic tumors were compared, no statistically significant difference was found in cyclin D1 expression between the 4 groups (p=0.465). No statistically significant difference was observed in staining between tumors of vascular and pericytic origin (p=0.104). ER expression was detected in only one case of malignant glomus tumor. TAG72 expression was not observed in any of the cases. Conclusion: The present study supports the notion that cyclin D1 may be present as a driver mutation in this group of tumors. The findings of this study did not produce any data to support the hypothesis claiming that pericyte loss led to malignancy. We believe that our results on the comparison of cell cycle protein expressions in cutaneous vascular and pericytic tumors shed light for future studies to elucidate the pathogenesis of this group of rare tumors