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https://www.readbyqxmd.com/read/28207832/towards-sustainable-fishery-management-for-skates-in-south-america-the-genetic-population-structure-of-zearaja-chilensis-and-dipturus-trachyderma-chondrichthyes-rajiformes-in-the-south-east-pacific-ocean
#1
Carolina Vargas-Caro, Carlos Bustamante, Michael B Bennett, Jennifer R Ovenden
The longnose skates (Zearaja chilensis and Dipturus trachyderma) are the main component of the elasmobranch fisheries in the south-east Pacific Ocean. Both species are considered to be a single stock by the fishery management in Chile however, little is known about the level of demographic connectivity within the fishery. In this study, we used a genetic variation (560 bp of the control region of the mitochondrial genome and ten microsatellite loci) to explore population connectivity at five locations along the Chilean coast...
2017: PloS One
https://www.readbyqxmd.com/read/28190727/the-origin-of-vertebrate-gills
#2
J Andrew Gillis, Olivia R A Tidswell
Pharyngeal gills are a fundamental feature of the vertebrate body plan [1]. However, the evolutionary history of vertebrate gills has been the subject of a long-standing controversy [2-8]. It is thought that gills evolved independently in cyclostomes (jawless vertebrates-lampreys and hagfish) and gnathostomes (jawed vertebrates-cartilaginous and bony fishes), based on their distinct embryonic origins: the gills of cyclostomes derive from endoderm [9-12], while gnathostome gills were classically thought to derive from ectoderm [10, 13]...
February 3, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28162172/-radiographic-and-clinical-assessment-of-supracondylar-humeral-fractures-resulted-from-sports-in-children
#3
Z J Liu, S N Pan, L J Zhang
Objective: To investigate the radiographic and clinical assessment for supracondylar humeral fractures resulted from sports in children. Methods: The medical records of 166 patients with displaced supracondylar humerus fractures treated in Shengjing Hospital of China Medical University from January 2015 to December 2015 were reviewed.The etiology of 56 of 166 cases was relevant to the sports.Medical records of 56 of 166 patients were reviewed, incluidng gender, the mean age of patient at the time of surgery, the mean duration of injury, radiographic assessment based on the anteroposterior (AP) and lateral radiographs of the elbow, neurologic injury, the Mayo Elbow Performance Score (MEPS) and the criteria of Flynn...
January 17, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28144984/embryonic-development-of-the-axial-column-in-the-little-skate-leucoraja-erinacea
#4
Katharine E Criswell, Michael I Coates, J Andrew Gillis
The morphological patterns and molecular mechanisms of vertebral column development are well understood in bony fishes (osteichthyans). However, vertebral column morphology in elasmobranch chondrichthyans (e.g., sharks and skates) differs from that of osteichthyans, and its development has not been extensively studied. Here, we characterize vertebral development in an elasmobranch fish, the little skate, Leucoraja erinacea, using microCT, paraffin histology, and whole-mount skeletal preparations. Vertebral development begins with the condensation of mesenchyme, first around the notochord, and subsequently around the neural tube and caudal artery and vein...
January 31, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28143870/early-detection-of-ovarian-cancer-using-the-risk-of-ovarian-cancer-algorithm-with-frequent-ca125-testing-in-women-at-increased-familial-risk-combined-results-from-two-screening-trials
#5
Steven J Skates, Mark H Greene, Saundra S Buys, Phuong L Mai, Powel H Brown, Marion Piedmonte, Gustavo C Rodriguez, John O Schorge, Mark Sherman, Mary B Daly, Thomas J Rutherford, Wendy R Brewster, David M O'Malley, Edward E Partridge, John Boggess, Charles W Drescher, Claudine Isaacs, Andrew Berchuck, Susan M Domchek, Susan A Davidson, Robert P Edwards, Steven A Elg, Katie Wakeley, Kelly-Anne Phillips, Deborah K Armstrong, Ira R Horowitz, Carol J Fabian, Joan Walker, Patrick M Sluss, William R Welch, Lori Minasian, Nora Horick, Carol H Kasten, Susan Nayfield, David S Alberts, Dianne M Finkelstein, Karen Lu
PURPOSE: Women at familial/genetic ovarian cancer risk often undergo screening despite unproven efficacy. Research suggests each woman has her own CA125 baseline; significant increases above this level may identify cancers earlier than standard 6-12 monthly CA125>35U/mL. EXPERIMENTAL DESIGN: Data from prospective Cancer Genetics Network and Gynecologic Oncology Group trials, which screened 3,692 women (13,080 woman-screening years) with a strong breast/ovarian cancer family history or BRCA1/2 mutations, were combined to assess a novel screening strategy...
January 31, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28104230/first-evidence-of-persistent-organic-contaminants-as-potential-anthropogenic-stressors-in-the-barndoor-skate-dipturus-laevis
#6
Kady Lyons, Douglas H Adams
Although exploited populations of elasmobranchs may be able to recover from fishing pressure, there is little information regarding the Barndoor Skate's ability to cope with other anthropogenic stressors such as organic contaminants (OCs). Legacy OCs were measured in liver, muscle and ova from fourteen Barndoor Skates with mature skates having significantly greater mean concentrations of OCs than immature skates, demonstrating bioaccumulation with age. Using Toxic Equivalency Factors, skates were found to have levels of PCBs that have been shown to elicit negative physiological responses in other fishes and these results highlight the need for future studies to investigate the potential impacts that bioaccumulated organic contaminants have on the recovery and conservation of this vulnerable species...
January 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28100123/relay-exchanges-in-elite-short-track-speed-skating
#7
Andrew Hext, Ben Heller, John Kelley, Simon Goodwill
In short track speed skating, the relay exchange provides an additional strategic component to races by allowing a team to change the skater involved in the pack race. Typically executed every 1½ laps, it is the belief of skaters and coaches that during this period of the race, time can be gained or lost due to the execution of the relay exchange. As such, the aim of this study was to examine the influence of the relay exchange on a team's progression through a 5000 m relay race. Using data collected from three World Cup relay events during the 2012-2013 season, the time taken to complete the straight for the scenarios with and without the relay exchange were compared at different skating speeds for the corner exit prior to the straight...
January 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28093310/effects-of-glucose-and-insulin-administration-on-glucose-transporter-expression-in-the-north-pacific-spiny-dogfish-squalus-suckleyi
#8
Courtney A Deck, W Gary Anderson, Patrick J Walsh
Elasmobranchs (sharks, skates, and rays) are a primarily carnivorous group of fish, consuming few carbohydrates. Further, they tend to exhibit delayed responses to glucose and insulin administration in vivo relative to mammals, leading to a presumption of glucose-intolerance. To investigate the glucoregulatory capabilities of the spiny dogfish (Squalus suckleyi), plasma glucose concentration, muscle and liver glycogen content, and glucose transporter (glut1 and 4) mRNA levels were measured following intra-arterial administration of bovine insulin (10 ng kg(-1)) or an approximate doubling of fasting plasma glucose concentration...
January 13, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28087234/interference-from-related-actions-in-spoken-word-production-behavioural-and-fmri-evidence
#9
Greig de Zubicaray, Douglas Fraser, Kori Ramajoo, Katie McMahon
Few investigations of lexical access in spoken word production have investigated the cognitive and neural mechanisms involved in action naming. These are likely to be more complex than the mechanisms involved in object naming, due to the ways in which conceptual features of action words are represented. The present study employed a blocked cyclic naming paradigm to examine whether related action contexts elicit a semantic interference effect akin to that observed with categorically related objects. Participants named pictures of intransitive actions to avoid a confound with object processing...
February 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28080120/a-goal-bias-in-action-the-boundaries-adults-perceive-in-events-align-with-sites-of-actor-intent
#10
Dani Levine, Kathy Hirsh-Pasek, Amy Pace, Roberta Michnick Golinkoff
We live in a dynamic world comprised of continuous events. Remembering our past and predicting future events, however, requires that we segment these ongoing streams of information in a consistent manner. How is this segmentation achieved? This research examines whether the boundaries adults perceive in events, such as the Olympic figure skating routine used in these studies, align with the beginnings (sources) and endings (goals) of human goal-directed actions. Study 1 showed that a group of experts, given an explicit task with unlimited time to rewatch the event, identified the same subevents as one another, but with greater agreement as to the timing of goals than sources...
January 12, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28077388/the-na-taurocholate-cotransporting-polypeptide-ntcp-slc10a1-ortholog-in-the-marine-skate-leucoraja-erinacea-is-not-a-physiological-bile-salt-transporter
#11
Dongke Yu, Han Zhang, Daniel A Lionarons, James L Boyer, Shi-Ying Cai
The Na(+)-dependent taurocholate co-transporting polypeptide (NTCP/SLC10A1) is a hepatocyte specific solute carrier, which plays an important role in maintaining bile salt homeostasis in mammals. The absence of an hepatic Na(+)-dependent bile salt transport system in marine skate and rainbow trout raises a question regarding the function of the Slc10a1 gene in these species. Here we have characterized the Slc10a1 gene in the marine skate, Leucoraja erinacea. The transcript of skate Slc10a1 (skSlc10a1) encodes 319 amino acids and shares 46% identity to human NTCP (hNTCP) with similar topology to mammalian NTCP...
January 11, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28075521/association-between-adolescent-sport-activities-and-lumbar-disc-degeneration-among-young-adults
#12
Jani Takatalo, Jaro Karppinen, Simo Näyhä, Simo Taimela, Jaakko Niinimäki, Roberto Blanco Sequeiros, Tuija Tammelin, Juha Auvinen, Osmo Tervonen
The relationship between different sport activities and lumbar intervertebral disc degeneration (DD) is largely unknown. We evaluated whether adolescent participation in different sports is associated with lumbar DD in a population-based birth cohort of young adults. A total of 558 young adults (325 females and 233 males) underwent magnetic resonance imaging (MRI, 1.5-T scanner). A DD sum score, based on the Pfirrmann grading, was calculated for all lumbar levels. The sum score was categorized into no DD, 1, 2, or at least 3...
January 11, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28069513/structure-and-mechanical-implications-of-the-pectoral-fin-skeleton-in-the-longnose-skate-chondrichthyes-batoidea
#13
Wei Huang, Watcharapong Hongjamrassilp, Jae-Young Jung, Philip A Hastings, Vlado A Lubarda, Joanna McKittrick
: Animal propulsion systems are believed to show high energy and mechanical efficiency in assisting movement compared to artificial designs. As an example, batoid fishes have very light cartilaginous skeletons that facilitate their elegant swimming via enlarged wing-like pectoral fins. The aim of this work is to illustrate the hierarchical structure of the pectoral fin of a representative batoid, the Longnose Skate (Raja rhina), and explain the mechanical implications of its structural design...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28026018/a-preliminary-investigation-into-the-morphology-of-oral-papillae-and-denticles-of-blue-sharks-prionace-glauca-with-inferences-about-its-functional-significance-across-life-stages
#14
Bianca de S Rangel, Natascha Wosnick, Neil Hammerschlag, Adriano P Ciena, José Roberto Kfoury Junior, Rose E G Rici
Sensory organs in elasmobranchs (sharks, skates, rays) detect and respond to a different set of biotic and/or abiotic stimuli, through sight, smell, taste, hearing, mechanoreception and electroreception. Although gustation is crucial for survival and essential for growth, mobility, and maintenance of neural activity and the proper functioning of the immune system, comparatively little is known about this sensory system in elasmobranchs. Here we present a preliminary investigation into the structural and dimensional characteristics of the oral papillae and denticles found in the oropharyngeal cavity of the blue shark (Prionace glauca) during embryonic development through adulthood...
December 27, 2016: Journal of Anatomy
https://www.readbyqxmd.com/read/28018244/differences-in-muscle-oxygenation-perceived-fatigue-and-recovery-between-long-track-and-short-track-speed-skating
#15
Florentina J Hettinga, Marco J Konings, Chris E Cooper
Due to the technical nature of speed skating, that is affecting physiological mechanisms such as oxygenation and blood flow, this sport provides a unique setting allowing us to uncover novel mechanistic insights of the physiological response to exercise in elite middle-distance and endurance sports. The present study aimed to examine the influence of skating mode (short-track vs. long-track) on muscle oxygenation, perceived fatigue, and recovery in elite speed skating. Muscle oxygenation of 12 talented short-track speed skaters was continuously monitored during a long-track (LT) and a short-track (ST) skating time-trial of maximal effort using near-infrared spectroscopy (NIRS) on the m...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27988737/a-new-deepwater-legskate-i-sinobatis-i-i-kotlyari-i-n-sp-rajiformes-anacanthobatidae-from-the-southeastern-indian-ocean-on-broken-ridge
#16
Matthias F W Stehmann, Simon Weigmann
Sinobatis kotlyari n. sp. is described, based on the nearly adult 331 mm TL holotype male from 1400 m depth in the southeastern Indian Ocean at Broken Ridge. The new species is assigned to Sinobatis due to mainly characters of its clasper and cranium fontanelle distinguishing it from congeners and other anacanthobatid skates with clasper features known. It further differs from its morphologically closest congener, S. borneensis, which is only known from the northwestern Pacific Ocean, e.g. in larger maturing size, longer snout and head, the absence of a snout filament and skin fold on tail, a longer caudal fin, and in colouration...
November 10, 2016: Zootaxa
https://www.readbyqxmd.com/read/27986765/skating-to-where-the-puck-is-going-to-be
#17
EDITORIAL
Robert T Schooley, Ferric C Fang
No abstract text is available yet for this article.
January 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27986753/nipple-reconstruction-after-autologous-or-expander-breast-reconstruction-a-multimodal-and-3-dimensional-analysis
#18
Mathias Tremp, Pietro G di Summa, Dominique Schaakxs, Carlo M Oranges, Reto Wettstein, Daniel F Kalbermatten
BACKGROUND: Little is known about the influence of the underlying tissue as donor for nipple-areola complex (NAC) reconstruction. Also, there is a complete lack of knowledge about the fate of nipple volume. OBJECTIVES: The goal of this retrospective, single-institution study was to analyze a case series after nipple reconstruction using a multimodal evaluation including 3-dimensional (3D) laser scanner analyses. METHODS: Unilateral mastectomy patients after either expander-based or autologous breast reconstruction using the skate flap were included...
February 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/27965272/batoid-fish-locomotion-effects-of-speed-on-pectoral-fin-deformation-in-the-little-skate-leucoraja-erinacea
#19
Valentina Di Santo, Erin L Blevins, George V Lauder
Most batoid fishes have a unique swimming mode in which thrust is generated by either oscillating or undulating expanded pectoral fins that form a disc. Only one previous study of the freshwater stingray has quantified three-dimensional motions of the wing, and no comparable data are available for marine batoid species that may differ considerably in their mode of locomotion. Here we investigate three-dimensional kinematics of the pectoral wing of the little skate, Leucoraja erinacea, swimming steadily at two speeds (1 and 2 body lengths per second, BL×s(-1))...
December 13, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27918670/combined-plyometric-strength-training-improves-ice-hockey-players-on-ice-sprint
#20
Torstein E Dæhlin, Ole C Haugen, Simen Haugerud, Ivana Hollan, Truls Raastad, Bent R Rønnestad
: Combined plyometric and strength training have previously been suggested as a strategy to improve skating performance in ice hockey players. However, the effects of combined plyometric and strength training has not been previously been compared to the effects of strength training only. PURPOSE: To compare the effects of combined plyometric and strength training on ice hockey players' skating sprint performance with strength training only. METHODS: Eighteen participants were randomly assigned to two groups that completed 5 strength-training sessions per week for 8 weeks...
December 5, 2016: International Journal of Sports Physiology and Performance
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