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bifid spine

Verónica Núñez, Fabiana B Drago, María Celina Digiani, Lia I Lunaschi
During the summer of 2013, several specimens of Phoenicopterus chilensis (Phoenicopteridae) were found dead from unknown causes, in lakes from the endorheic system "Encadenadas del Oeste", Buenos Aires Province, Argentina. Two species of Nematoda were recovered from the proventriculus, one of them new for science. The tetramerid Tetrameres (Tetrameres) salina n. sp. is mainly characterized by having reduced pseudolabia, lips absent, six bifid teeth, males with lateral alae, four rows of somatic spines and length ratio of spicules 1:12-32, and large females with eggs lacking polar filaments...
June 1, 2017: Acta Parasitologica
M K Karapetian
Studies on discrete traits of the human cervical vertebrae, appearing at certain intervals during the last century, posed some questions regarding evolutionary processes that human cervical spine underwent during phylogenesis. To address questions of significance of these morphological traits we need first a good knowledge of the extent of their variation in modern humans. The aim of the current work was to integrate available data on the occurrence of various non-metric traits in the human cervical spine and search for the pattern of their distribution on intra- and inter-population levels...
May 2017: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
Qi Kou, Jun Chen, Xinzheng Li, Lisheng He, Yong Wang
Several specimens of the giant deep-sea isopod genus Bathynomus were collected by a deep-sea lander at a depth of 898 m from Hainan Island, northern South China Sea. After careful examination, this material and the specimens collected from Gulf of Aden, north-western Indian Ocean, previously reported as Bathynomus sp., were identified to be the same as a new species to the genus. Bathynomus jamesi sp. nov. can be distinguished from the congeners by the distal margin of pleotelson with 11 or 13 short straight spines and central spine not bifid; uropodal endopod and exopod with distolateral corner slightly pronounced; clypeus with lateral margins concave; and antennal flagellum extending when extended posteriorly reaches the pereonite 3...
January 5, 2017: Integrative Zoology
Eliéxer Urdaneta Carruyo, Gustavo Rojas Zerpa, Adriana Urdaneta Contreras, Malvy Maldonado Alviarez, Miguel Brito Rodríguez
The Klippel-Feil syndrome is a congenital malformation of the skull flap involving complex cervical vertebrae and organs, characterized by a classic triad: short neck, limitation of movement of the head due to cervical spine fusion and low hairline in occipital region. It results from an error in the axial skeleton segmentation of the embryo; its incidence is estimated at 1/40,000-42,000 births and predominates in females. The aim of this paper is to describe the clinical picture of a patient with Klippel-Feil syndrome and multiple malformations, including tracheoesophageal fistula, bifid thumb and intracranial lipomas/angiolipomas,that have not been previously described in the syndrome, so it is considered an exceptional finding...
December 1, 2016: Archivos Argentinos de Pediatría
María Alejandra Rossin, Juan Tomás Timi
Nematodes belonging to genus Hedruris Nitzsch, 1821 (Nematoda: Hedruridae) were found in the stomach of the freshwater fish Oligosarcus jenynsii (Günther, 1864) (Characidae) from a shallow eutrophic lake in Argentina. Morphological comparisons with congeneric relatives showed that these nematodes belong to a new species, for which H. bifida n. sp. is proposed. Hedruris bifida n. sp. can be distinguished from its congeners by the following combination of characters: bifid deirids, absence of precloacal papillae and nine pairs of postcloacal papillae and non-mammillated eggs...
November 2016: Systematic Parasitology
Isabela Cristina Rocha, Leandro Lourenço Dumas, Jorge Luiz Nessimian
The adult male of a new species of the genus Polyplectropus Ulmer 1905a is described and illustrated based on specimens collected in Parque Nacional da Serra da Canastra, southeastern Brazil. Polyplectropus canastra sp. nov. can be distinguished from other Polyplectropus species by the shape of sternum IX, by the thumb-like mesolateral process of each preanal appendage, by the rectangular ventral branch of each inferior appendage in ventral view, and by the curved claw-like spines of the endothecal membrane...
February 2, 2016: Zootaxa
Thomas H Fraser
The new species is consistent with Gymnapogon, a distinct genus having one to three spines on the preopercle edge, fused hypurals (parhypural+1+2 and 3+4+terminal central), a free fifth hypural, two epurals, no supraneurals, scaleless head and body, a single rod-like postcleithrum and complex lines of free neuromasts on the head, body and caudal fin. The new species is distinguished by having a combination of a rounded caudal with 15 branched principal caudal-fin rays, 2 unbranched principal caudal-fin rays, 10 soft dorsal rays with the anterior two rays unbranched, 9 or 10 anal rays with the first ray unbranched and 14 pectoral rays the lower three and upper two unbranched...
May 3, 2016: Zootaxa
Frank L Pezold, Helen K Larson
The widespread tropical gobionelline fish genus Oxyurichthys is monophyletic due to its species sharing two characters considered derived within the Stenogobius Group of the Gobionellinae (Gobioidei: Gobiidae), a transversely broadened (spatulate) third neural spine that is usually bifid, and no preopercular cephalic lateralis canal. It is most closely related to Oligolepis, also of the Indo-west Pacific, and Ctenogobius, an Atlantic-eastern Pacific genus. Sixteen valid species of Oxyurichthys are redescribed and illustrated and four new species are described, O...
July 22, 2015: Zootaxa
Boonsatien Boonsoong, Michel Sartori
The new species Gilliesia ratchaburiensis sp. nov. is described based on male and female imagos (some of them reared from nymphal stages), nymphs and eggs collected in western Thailand. The nymph of Gilliesia, which is described for the first time, has bifid gills, a dense patch of setae on the ventral side of the glossae, no posterolateral spines on abdominal segment VIII, maxillary palpi 3-segmented and very reduced maxillary canines. Compared to congeners, the male imagos of the new species have penis lobes more straight and with the apical portion bent laterally but not ventrally, and female abdominal sternum 9 with a U-shaped, deep, median cleft...
July 3, 2015: Zootaxa
Aida M Bertoli-Avella, Elisabeth Gillis, Hiroko Morisaki, Judith M A Verhagen, Bianca M de Graaf, Gerarda van de Beek, Elena Gallo, Boudewijn P T Kruithof, Hanka Venselaar, Loretha A Myers, Steven Laga, Alexander J Doyle, Gretchen Oswald, Gert W A van Cappellen, Itaru Yamanaka, Robert M van der Helm, Berna Beverloo, Annelies de Klein, Luba Pardo, Martin Lammens, Christina Evers, Koenraad Devriendt, Michiel Dumoulein, Janneke Timmermans, Hennie T Bruggenwirth, Frans Verheijen, Inez Rodrigus, Gareth Baynam, Marlies Kempers, Johan Saenen, Emeline M Van Craenenbroeck, Kenji Minatoya, Ritsu Matsukawa, Takuro Tsukube, Noriaki Kubo, Robert Hofstra, Marie Jose Goumans, Jos A Bekkers, Jolien W Roos-Hesselink, Ingrid M B H van de Laar, Harry C Dietz, Lut Van Laer, Takayuki Morisaki, Marja W Wessels, Bart L Loeys
BACKGROUND: Aneurysms affecting the aorta are a common condition associated with high mortality as a result of aortic dissection or rupture. Investigations of the pathogenic mechanisms involved in syndromic types of thoracic aortic aneurysms, such as Marfan and Loeys-Dietz syndromes, have revealed an important contribution of disturbed transforming growth factor (TGF)-β signaling. OBJECTIVES: This study sought to discover a novel gene causing syndromic aortic aneurysms in order to unravel the underlying pathogenesis...
April 7, 2015: Journal of the American College of Cardiology
Thomas H Fraser
Archamia is restricted to a single species, A. bleekeri. A recently described genus, Kurtamia, a reference to a suggested relationship with the enigmatic Kurtus, is the junior synonym of Archamia. Kurtamia bykhovskyi is a junior synonym of A. bleekeri. Archamia is redescribed using osteological, color pattern, pore and free neuromast patterns supplementing those characters used in other publications noting clear differences between A. bleekeri and all other species formerly in that genus. The new genus Taeniamia, type species Archamia leai contains the remaining species...
2013: Zootaxa
Panduranga Chikkannaiah, V Srinivasamurthy, B S Satish Prasad, Pradeepkumar Lalyanayak, Divya N Shivaram
Iniencephaly is a rare form of neural tube defect with an incidence of 0.1-10 in 10,000 pregnancies. It is characterized by the presence of occipital bone defects at foramen magnum, fixed retroflexion of head, spinal dysmorphism, and lordosis of cervicothoracic vertebrae. It is usually associated with central nervous system, gastrointestinal, and cardiovascular anomalies. We present radiological and autopsy findings in a series of 3 cases of iniencephaly (gestational ages 29.3, 23, and 24 weeks) first fetus in addition showed omphalocele, pulmonary hypoplasia, two lobes in right lung, accessory spleen, atrial septal defect, bilateral clubfoot, ambiguous genitalia, and single umbilical artery...
October 2014: Journal of Neurosciences in Rural Practice
Katarzyna Bogusiak, Piotr Arkuszewski, Katarzyna Skorek-Stachnik, Marcin Kozakiewicz
Goldenhar syndrome is a rare congenital defect characterized by ocular symptoms including (epibulbar dermoids, microphthalmia, anophthalmia, eyes asymmetry/dysmorphy, cleft eyelid, exophthalmia, strabismus), auricular symptoms (dacryocystitis), preauricular appendages, preauricular fistulas, ear asymmetry, microtia, atresia of the external auditory canal), craniofacial deformities (cleft face, cleft lip, cleft palate, macrostomia, bifid tongue, hypoplasia of the mandible, hypoplasia of the maxilla, asymmetry of the mandible and maxilla, malocclusion, tooth discrepancies, agenesis of third molars and second premolars, supernumerary teeth, enamel and dentin malformations, delay in tooth development), and skeletal abnormalities (cleft spine, microcephaly, dolichocephaly, plagiocephaly, vertebral defects) or abnormalities of internal organs...
January 2014: Journal of Craniofacial Surgery
Ali Ender Ofluoglu, Anas Abdallah, Akin Gokcedag
Solitary osteochondromas are common benign long bone tumors originating from cartilage. They may produce a wide variety of symptoms and complications depending on their spinal location. These may include compressive myelopathy, nerve root compression, pathologic fracture and malignant degeneration, or in some cases only pain. Solitary cervical spine osteochondromas have been reported mostly in the neural arch or vertebral body. This report describes a patient presenting with neck pain, with a benign osteochondroma arising in the right bifid C5 lamina...
2013: Case Reports in Orthopedics
Yoshiyuki Mori, Kazuto Hoshi, Tsuyoshi Takato, Michiko Takahashi, Yukiko Hirano, Yuki Kanno, Kazumi Ohkubo, Hideto Saijo
We have analysed bony defects of the hard palate in patients with submucous cleft palate to find out whether velopharyngeal insufficiency (VPI) is dependent on the extent of these defects. We evaluated the maxillofacial structures associated with cleft palate by 3-dimensional computed tomography (CT) in 23 children diagnosed with submucous cleft palate. Bony defects of the hard palate were divided into Type I, defined as absent posterior nasal spine (n=12), Type II, V-shaped bony notch (moderate, n=7), and Type III, as bony defect extending into the incisive foramen (severe, n=4) defects, respectively...
December 2013: British Journal of Oral & Maxillofacial Surgery
Yukiko Higa, Takako Toma, Ichiro Miyagi
We describe and illustrate for the 1st time the pupa and larva of adult female Ficalbia ichiromiyagii based on specimens collected from a swamp forest in Otomi, Iriomote Island, Ryukyu Archipelago, Japan. The pupa has a trumpet that is 6.25 times its breadth at halfway, with a long meatal cleft line; setae 6-I, II considerably long, usually single or bifid; median caudal seta absent; and paddle edge serrated only on the outer apical half. The larva is characterized by dark pigmentation of the head and siphon, seta I-C elongate and spiniform, usually with a short lateral spine on the inner basal side and siphon with 1 pecten spine and conspicuous seta 1-S at the base...
December 2012: Journal of the American Mosquito Control Association
Jørgen Olesen, Martin Fritsch, Mark J Grygier
For comparison with the remarkable larvae of the laevicaudatan (clam shrimp) Lynceus brachyurus, a basic description of the larval sequence of another laevicaudatan branchiopod, the Japanese Lynceus biformis, is provided. Four larval stages have been identified, ranging in size from 258 to 560 μm in length. The first stage has no flattened dorsal shield, in contrast to the three following stages, in which such a shield is present. During development, the only significant changes to the naupliar appendages occur in the antenna at the molt from stage 1 to 2, with the addition of a fourth apical seta to the endopod and a change in the form of the naupliar process, used for food manipulation, from a long, unbranched, pointed spine to a bifid structure...
February 2013: Journal of Morphology
J Skrzat, J Walocha, J Zawiliński
The objective of this study was to provide morphometric analysis of an accessory spine that was found within the lumen of the foramen ovale, as well as to find out whether this structure could mechanically irritate the mandibular nerve. A bifid spine was perceived in the macerated skull of an adult individual. It was located in the anterior part of the left foramen ovale. The overall length of the spine was found to be 1.8 mm. The spine had a homogenous structure, and showed high levels of mineralisation. We conclude that the accessory spine did not compress the mandibular nerve, and that the foramen ovale provided enough space for passage of the nerve...
November 2012: Folia Morphologica (Warsz)
Suchanda Bhattacharjee, Vijayasaradhi Mudumba, Purohit K Aniruddh
We report here a rare case of high cervical stenosis at the level of atlas who presented with progressively deteriorating quadriparesis and respiratory distress. A 10-year-old boy presented with above symptoms of one-year duration with a preceding history of trivial trauma prior to onset of such symptoms. Cervical spine MRI revealed a significant stenosis at the level of atlas from the posterior side with a syrinx extending above and below. High-resolution computed tomography of the above level yielded an ill-defined osseous bar compressing the canal at the level of C(1) posterior arch, which appeared bifid in the midline...
January 2011: Journal of Craniovertebral Junction and Spine
Chunquan Cai, Ouyan Shi, Changhong Shen
The dorsal cutaneous appendage, or so-called human tail, is often considered to be a cutaneous marker of underlying occult dysraphism. The authors present a case of human tail occurring in a 9-month-old infant with multiple abnormalities of the spinal cord and spine. Examination revealed unremarkable except for a caudal appendage and a dark pigmentation area in the low back. Neuroradiological scans revealed cleft vertebrae and bifid ribbon, split cord malformations, block vertebrae, and hemivertebra. Surgical excision of the tail and untethering the spinal cord by removal of the septum were performed...
2011: Advances in Orthopedics
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