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https://www.readbyqxmd.com/read/28098800/characterization-of-the-transcriptome-and-gene-expression-of-brain-tissue-in-sevenband-grouper-hyporthodus-septemfasciatus-in-response-to-nnv-infection
#1
Jong-Oh Kim, Jae-Ok Kim, Wi-Sik Kim, Myung-Joo Oh
Grouper is one of the favorite sea food resources in Southeast Asia. However, the outbreaks of the viral nervous necrosis (VNN) disease due to nervous necrosis virus (NNV) infection have caused mass mortality of grouper larvae. Many aqua-farms have suffered substantial financial loss due to the occurrence of VNN. To better understand the infection mechanism of NNV, we performed the transcriptome analysis of sevenband grouper brain tissue, the main target of NNV infection. After artificial NNV challenge, transcriptome of brain tissues of sevenband grouper was subjected to next generation sequencing (NGS) using an Illumina Hi-seq 2500 system...
January 13, 2017: Genes
https://www.readbyqxmd.com/read/28098540/diphyllobothrium-nihonkaiense-tapeworm-larvae-in-salmon-from-north-america
#2
Roman Kuchta, Mikuláš Oros, Jayde Ferguson, Tomáš Scholz
Diphyllobothriosis is reemerging because of global importation and increased popularity of eating raw fish. We detected Diphyllobothrium nihonkaiense plerocercoids in the musculature of wild pink salmon (Oncorhynchus gorbuscha) from Alaska, USA. Therefore, salmon from the American and Asian Pacific coasts and elsewhere pose potential dangers for persons who eat these fish raw.
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28098234/maternal-cortisol-stimulates-neurogenesis-and-affects-larval-behaviour-in-zebrafish
#3
Carol Best, Deborah M Kurrasch, Mathilakath M Vijayan
Excess glucocorticoid transferred from stressed mother to the embryo affects developing vertebrate offspring, but the underlying programming events are unclear. In this study, we tested the hypothesis that increased zygotic glucocorticoid deposition, mimicking a maternal stress scenario, modifies early brain development and larval behaviour in zebrafish (Danio rerio). Cortisol was microinjected into the yolk at one cell-stage, to mimic maternal transfer, and the larvae [96 hours post-fertilization (hpf)] displayed increased activity in light and a reduction in thigmotaxis, a behavioural model for anxiety, suggesting an increased propensity for boldness...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097823/excess-retinoic-acid-induces-fusion-of-centra-by-degenerating-intervertebral-ligament-cells-in-japanese-flounder-paralichthys-olivaceus
#4
Xiaoming Wu, Qiran Chen, Youhei Washio, Hayato Yokoi, Tohru Suzuki
In marine aquaculture fish, excessive supplement of vitamin A (VA) to zooplanktons for larval culture and experimental exposure of larvae to retinoic acid (RA: active form of VA) have been known to cause vertebral deformity. However, the tissues in the developing vertebral column that are affected by RA and the progression of vertebral deformity remain undetermined. To examine these questions, we histologically traced the progress of vertebral deformity induced by RA in Japanese flounder (Paralichthys olivaceus)...
January 18, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28097662/thermal-requirements-for-growth-survival-and-aerobic-performance-of-weatherfish-larvae-misgurnus-fossilis
#5
B Schreiber, J Monka, B Drozd, M Hundt, M Weiss, T Oswald, R Gergs, R Schulz
Thermal requirements of larval weatherfish Misgurnus fossilis were investigated in terms of growth, survival and aerobic performance. Growth and survival of M. fossilis larvae acclimated to five temperatures (11, 15, 19, 23 and 27° C) were measured over 25 days. In the upper temperature treatments (19, 23 and 27° C), survival of larvae was stable throughout the entire rearing period (>75%), whereas 11 and 15° C resulted in severe declines in survival (to <10%). Growth of larvae (expressed as dry mass and total length) was highest at 19 and 23° C, but significantly decreased at 27° C...
January 18, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28097495/the-expression-of-hypoxia-inducible-factor-1%C3%AE-gene-is-not-affected-by-low-oxygen-conditions-in-yellow-perch-perca-flavescens-juveniles
#6
Karolina Kwasek, Simona Rimoldi, Anna Giulia Cattaneo, Timothy Parker, Konrad Dabrowski, Genciana Terova
Hypoxia can affect various fish populations, including yellow perch Perca flavescens, which is an economically and ecologically important species in Lake Erie, a freshwater system that often experiences hypoxia in the hypolimnetic part of the lake. Fish, similarly to mammals, possess molecular oxygen sensor-hypoxia-inducible factor-1 (HIF-1), a transcription factor that can affect expression of many downstream genes related to animal growth and locomotion, protein synthesis, as well as ATP and amino acid metabolism...
January 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28096967/volatile-compounds-analysis-and-antioxidant-antimicrobial-and-cytotoxic-activities-of-mindium-laevigatum
#7
Abdolrasoul Haghir Ebrahimabadi, Mohammad Mahdi Movahedpour, Hossain Batooli, Ebrahim Haghir Ebrahimabadi, Asma Mazoochi, Maryam Mobarak Qamsari
OBJECTIVES: Mindium laevigatum is an endemic plant of Iran and Turkey and is widely used as blood purifier, antiasthma and antidyspnea in traditional medicine. Chemical composition of volatile materials of the plant and its antioxidant, antimicrobial and cytotoxic activities were reported in this study. MATERIALS AND METHODS: Simultaneous distillation-extraction (SDE) and GC-Mass-FID analysis were used for the plant volatile materials chemical composition identification and quantification...
December 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28096867/nasal-nosocomial-myiasis-infection-caused-by-chrysomya-bezziana-diptera-calliphoridae-following-the-septicemia-a-case-report
#8
Seyed Farzin Mircheraghi, Seyed Farzam Mircheraghi, Hamed Ramezani Awal Riabi, Arezoo Parsapour
A 74 yr old woman from Gonabad, southern part of Khorasan Razavi Province of Iran was admitted to a Hospital of Gonabad, because of respiratory distress, exertional dyspnea and fever. Close contact with domestic animals, history of chronic obstructive pulmonary disease (COPD), and completely resolved pulmonary tuberculosis (TB) in remote past, were notable parts of her past medical history. Due to clinical, paraclinical and radiographic findings and because of recent hospitalization, she was admitted to internal medicine ward with the diagnosis of health care associated pneumonia (HCAP)...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28096866/disseminated-strongyloidiasis-in-an-iranian-immunocompromised-patient-a-case-report
#9
Narges Najafi, Eissa Soleymani, Shahabeddin Sarvi, Amirkeivan Marofi, Anahita Nosrati, Alireza Davoodi
Strongyloides stercoralis is a soil-transmitted helminth (STH) widespread in various part of the world. A 78-yr-old peasant diabetic female from Mazandaran Province northern Iran, was admitted to Infection Department of the Razi Hospital in city of Qaemshahr, north of Iran complaining about abdominal skin rash, pruritus, itching, anorexia, nausea, vomiting, dysuria and cough. This patient had cutaneous migration effects of S. stercoralis larvae in her abdominal skin (larva currents and urticaria). Lung CT without contrast demonstrate s bilateral diffuse ground glass opacity draws attention...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28096859/occurrence-and-intensity-of-anisakid-nematode-larvae-in-some-commercially-important-fish-species-in-persian-gulf
#10
Maryam Dadar, Alireza Alborzi, Rahim Peyghan, Milad Adel
BACKGROUND: Anisakid nematodes are common parasites of fish, mammals, fish-eating birds, and reptiles with a worldwide distribution, causing diseases in human, fish and important economic losses. METHODS: A preliminary epidemiological study was carried out on Anisakid nematodes larvae in some commercially important fish species to evaluate the anisakid nematode larvae from greater lizardfish, (Saurida tumbil), Japanese thread fin bream (Nemipterus japonicus), crocodile longtom (Tylosurus crocodilus crocodiles) and longfin trevally (Carangoides armatus) from the Persian Gulf of Iran...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28096855/helminth-infections-of-meriones-persicus-persian-jird-mus-musculus-house-mice-and-cricetulus-migratorius-grey-hamster-a-cross-sectional-study-in-meshkin-shahr-district-northwest-iran
#11
Zabiholah Zarei, Mehdi Mohebali, Zahra Heidari, Jaber Davoodi, Afshin Shabestari, Afsaneh Motevalli Haghi, Khadijeh Khanaliha, Eshrat Beigom Kia
BACKGROUND: Rodents have important role as reservoirs of different parasites. The aim of this study was to determine helminth parasites of abundant rodents in Meshkin-Shahr, Ardabil Province northwest Iran. METHODS: From April 2014 to March 2015; 205 rodents including 118 Meriones persicus, 63 Mus musculus and 24 Cricetulus migratorius were collected, using live traps. All rodents were dissected and their different tissues examined for infectivity with helminth parasites...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28096603/gastrointestinal-nematode-larvae-in-the-grazing-land-of-cattle-in-guwahati-assam
#12
Meena Das, D K Deka, S Islam, P C Sarmah, K Bhattacharjee
AIM: To know the prevalence of gastrointestinal nematode larvae (L3) in the grazing land of cattle in Guwahati, Kamrup district, Assam. MATERIALS AND METHODS: Pastures were collected and examined for the presence of nematode larvae (L3) from six localities of Guwahati at monthly interval from August 2012 to July 2013. The counted larvae were then expressed as per kg dry matter of herbage (L3/kg DM). RESULTS: Examination of pastures revealed presence of nematode larvae (L3) in pastures throughout the year which varied from 4...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28096379/molecular-mechanism-underlying-juvenile-hormone-mediated-repression-of-precocious-larval-adult-metamorphosis
#13
Takumi Kayukawa, Akiya Jouraku, Yuka Ito, Tetsuro Shinoda
Juvenile hormone (JH) represses precocious metamorphosis of larval to pupal and adult transitions in holometabolous insects. The early JH-inducible gene Krüppel homolog 1 (Kr-h1) plays a key role in the repression of metamorphosis as a mediator of JH action. Previous studies demonstrated that Kr-h1 inhibits precocious larval-pupal transition in immature larva via direct transcriptional repression of the pupal specifier Broad-Complex (BR-C). JH was recently reported to repress the adult specifier gene Ecdysone-induced protein 93F (E93); however, its mechanism of action remains unclear...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095927/small-alteration-big-impacts-effects-of-small-scale-riparian-forest-management-on-host-parasite-dynamics-in-streams
#14
C Lagrue, A A Besson, A Lecerf
Environmental changes and ecological disturbances can have large and unpredictable effects on parasite dynamics. Increasing human impacts on freshwater ecosystems through land use may thus modify the distribution and abundance of parasites and have cascading effects on host populations. Here we tested the effects of small-scale riparian forest management on the nematode Cystidicoloides ephemeridarum and its insect intermediate host Ephemera danica in forested streams. We assessed the impacts of harvesting riparian trees on parasite prevalence and abundance concomitantly with host densities...
January 18, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28095660/draft-genome-of-toxocara-canis-a-pathogen-responsible-for-visceral-larva-migrans
#15
Jinhwa Kong, Jungim Won, Jeehee Yoon, UnJoo Lee, Jong-Il Kim, Sun Huh
This study aimed at constructing a draft genome of the adult female worm Toxocara canis using next-generation sequencing (NGS) and de novo assembly, as well as to find new genes after annotation using functional genomics tools. Using an NGS machine, we produced DNA read data of T. canis. The de novo assembly of the read data was performed using SOAPdenovo. RNA read data were assembled using Trinity. Structural annotation, homology search, functional annotation, classification of protein domains, and KEGG pathway analysis were carried out...
December 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28095487/dna-metabarcoding-of-amazonian-ichthyoplankton-swarms
#16
M E Maggia, Y Vigouroux, J F Renno, F Duponchelle, E Desmarais, J Nunez, C García-Dávila, F M Carvajal-Vallejos, E Paradis, J F Martin, C Mariac
Tropical rainforests harbor extraordinary biodiversity. The Amazon basin is thought to hold 30% of all river fish species in the world. Information about the ecology, reproduction, and recruitment of most species is still lacking, thus hampering fisheries management and successful conservation strategies. One of the key understudied issues in the study of population dynamics is recruitment. Fish larval ecology in tropical biomes is still in its infancy owing to identification difficulties. Molecular techniques are very promising tools for the identification of larvae at the species level...
2017: PloS One
https://www.readbyqxmd.com/read/28095304/adaptive-significance-of-critical-weight-for-metamorphosis-in-holometabolous-insects
#17
Ken-Ichi Hironaka, Yoshihiro Morishita
Holometabolous insect larvae become committed to metamorphosis when they reach a critical weight. Although the physiological mechanisms involved in this process have been well-studied, the adaptive significance of the critical weight remains unclear. Here, we developed a life history model for holometabolous insects and evaluated it from the viewpoint of optimal energy allocation. We found that, without a priori assumptions about critical weight, the optimal growth schedule is always biphasic: larval tissues grow predominately until they reach a certain threshold, after which the imaginal tissues begin rapid growth, suggesting that the emergence of a critical weight as a phase-transition point is a natural consequence of optimal growth scheduling...
January 14, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28094805/the-genome-sequence-of-barbarea-vulgaris-facilitates-the-study-of-ecological-biochemistry
#18
Stephen L Byrne, Pernille Østerbye Erthmann, Niels Agerbirk, Søren Bak, Thure Pavlo Hauser, Istvan Nagy, Cristiana Paina, Torben Asp
The genus Barbarea has emerged as a model for evolution and ecology of plant defense compounds, due to its unusual glucosinolate profile and production of saponins, unique to the Brassicaceae. One species, B. vulgaris, includes two 'types', G-type and P-type that differ in trichome density, and their glucosinolate and saponin profiles. A key difference is the stereochemistry of hydroxylation of their common phenethylglucosinolate backbone, leading to epimeric glucobarbarins. Here we report a draft genome sequence of the G-type, and re-sequencing of the P-type for comparison...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094606/trichinella-surveillance-in-black-bears-ursus-americanus-from-the-dehcho-region-northwest-territories-canada-2002-2015
#19
Nicholas C Larter, Brett T Elkin, Lorry B Forbes, Brent Wagner, Danny G Allaire
We used muscle digestion to test black bears ( Ursus americanus ) from the southwestern Northwest Territories, Canada, for Trichinella. Results showed a prevalence of 4.1%. Some bears had infection intensities of more than one larva per gram (LPG) of muscle tissue; this level in meat is considered to pose a human consumption safety risk.
January 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28094453/down-regulation-of-a-chitin-synthase-a-gene-by-rna-interference-enhances-pathogenicity-of-beauveria-bassiana-anu1-against-spodoptera-exigua-h%C3%A3-bner
#20
Jung-Bok Lee, Hyun Soo Kim, Youngjin Park
Chitin synthase (CHS) is an important enzymatic component, which is required for chitin formation in the cuticles and cuticular linings of other tissues in insects. CHSs have been divided into two classes, classes A and B, based on their amino acid sequence similarities and functions. Class A CHS (CHS-A) is specifically expressed in the epidermis and related ectodermal cells such as tracheal cells, while class B CHS (CHS-B) is expressed in gut epithelial cells that produce peritrophic matrices. In this study, we cloned the CHS-A gene from the beet armyworm, Spodoptera exigua (SeCHS-A)...
January 17, 2017: Archives of Insect Biochemistry and Physiology
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