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https://www.readbyqxmd.com/read/28918590/the-role-of-diet-in-shaping-the-chemical-signal-design-of-lacertid-lizards
#1
Simon Baeckens, Roberto García-Roa, José Martín, Raoul Van Damme
Lizards communicate with others via chemical signals, the composition of which may vary among species. Although the selective pressures and constraints affecting chemical signal diversity at the species level remain poorly understood, the possible role of diet has been largely neglected. The chemical signals of many lizards originate from the femoral glands that exude a mixture of semiochemicals, and may be used in a variety of contexts. We analyzed the lipophilic fraction of the glandular secretions of 45 species of lacertid lizard species by gas chromatography/mass spectrometry...
September 16, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28915255/scrambled-eggs-a-highly-sensitive-molecular-diagnostic-workflow-for-fasciola-species-specific-detection-from-faecal-samples
#2
Nichola Eliza Davies Calvani, Peter Andrew Windsor, Russell David Bush, Jan Šlapeta
BACKGROUND: Fasciolosis, due to Fasciola hepatica and Fasciola gigantica, is a re-emerging zoonotic parasitic disease of worldwide importance. Human and animal infections are commonly diagnosed by the traditional sedimentation and faecal egg-counting technique. However, this technique is time-consuming and prone to sensitivity errors when a large number of samples must be processed or if the operator lacks sufficient experience. Additionally, diagnosis can only be made once the 12-week pre-patent period has passed...
September 15, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28912541/coprophagous-features-in-carnivorous-nepenthes-plants-a-task-for-ureases
#3
Ayufu Yilamujiang, Anting Zhu, Rodrigo Ligabue-Braun, Stefan Bartram, Claus-Peter Witte, Rainer Hedrich, Mitsuyasu Hasabe, Caroline R Schöner, Michael G Schöner, Gerald Kerth, Célia R Carlini, Axel Mithöfer
Most terrestrial carnivorous plants are specialized on insect prey digestion to obtain additional nutrients. Few species of the genus Nepenthes developed mutualistic relationships with mammals for nitrogen supplementation. Whether dietary changes require certain enzymatic composition to utilize new sources of nutrients has rarely been tested. Here, we investigated the role of urease for Nepenthes hemsleyana that gains nitrogen from the bat Kerivoula hardwickii while it roosts inside the pitchers. We hypothesized that N...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28910997/paediatric-nuclear-medicine-imaging
#4
Lorenzo Biassoni, Marina Easty
Background: Nuclear medicine imaging explores tissue viability and function by using radiotracers that are taken up at cellular level with different mechanism. This imaging technique can also be used to assess blood flow and transit through tubular organs. Nuclear medicine imaging has been used in paediatrics for decades and this field is continuously evolving. Sources of data: The data presented comes from clinical experience and some milestone papers on the subject...
September 1, 2017: British Medical Bulletin
https://www.readbyqxmd.com/read/28910699/intraspecific-variation-and-influence-of-diet-on-the-venom-chemical-profile-of-the-ectatomma-brunneum-smith-formicidae-ant-evaluated-by-photoacoustic-spectroscopy
#5
Rafaella Caroline Bernardi, Ellen Liciane Barbosa Firmino, Angelica Mendonça, Denise Sguarizi-Antonio, Márlon César Pereira, Luis Humberto da Cunha Andrade, William Fernando Antonialli-Junior, Sandro Marcio Lima
Studies of venomous animals have shown that environmental and genetic factors contribute to determining the chemical composition of venom. It is well known that external effects cause differences in the toxicity, concentration, and prey specificity of venom. However, the influence of different factors on the chemical profile of Hymenoptera venom remains little explored. In view of this, the aim of this study was to evaluate intraspecific differences and the influence of diet on the chemical profile of Ectatomma brunneum venom using Fourier transform infrared photoacoustic spectroscopy...
September 6, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28910322/social-interactions-promote-adaptive-resource-defense-in-ants
#6
Christoph Johannes Kleineidam, Eva Linda Heeb, Stefanie Neupert
Social insects vigorously defend their nests against con- and heterospecific competitors. Collective defense is also seen at highly profitable food sources. Aggressive responses are elicited or promoted by several means of communication, e.g. alarm pheromones and other chemical markings. In this study, we demonstrate that the social environment and interactions among colony members (nestmates) modulates the propensity to engage in aggressive behavior and therefore plays an important role in allocating workers to a defense task...
2017: PloS One
https://www.readbyqxmd.com/read/28904727/post-ivermectin-encephalopathy-in-senegal-a-case-report
#7
Daniel Gams Massi, Mohamed Lelouma Mansare, Mariétou Traoré, Moustapha Ndiaye, Amadou Gallo Diop, Mouhamadou Mansour Ndiaye
Ivermectin is an ant parasitic drug used for combating onchocerciasis and lymphatic filariasis. It works by inhibiting the function of neurons and muscles, thus causing paralysis of microfilariae. Side effects of this drug have been reported including post-ivermectin encephalopathy requiring emergency care in hospital. We report the case of a 35 years old patient living in rural areas of Senegal who presented two days after a mistake in administration of a second dose of ivermectin, headaches, altered consciousness and bilateral blindness...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28904344/perturbed-cholesterol-and-vesicular-trafficking-associated-with-dengue-blocking-in-wolbachia-infected-aedes-aegypti-cells
#8
Vincent Geoghegan, Kirsty Stainton, Stephanie M Rainey, Thomas H Ant, Adam A Dowle, Tony Larson, Svenja Hester, Philip D Charles, Benjamin Thomas, Steven P Sinkins
Wolbachia are intracellular maternally inherited bacteria that can spread through insect populations and block virus transmission by mosquitoes, providing an important approach to dengue control. To better understand the mechanisms of virus inhibition, we here perform proteomic quantification of the effects of Wolbachia in Aedes aegypti mosquito cells and midgut. Perturbations are observed in vesicular trafficking, lipid metabolism and in the endoplasmic reticulum that could impact viral entry and replication...
September 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28904134/an-ant-plant-mutualism-through-the-lens-of-cgmp-dependent-kinase-genes
#9
Pierre-Jean G Malé, Kyle M Turner, Manjima Doha, Ina Anreiter, Aaron M Allen, Marla B Sokolowski, Megan E Frederickson
In plant-animal mutualisms, how an animal forages often determines how much benefit its plant partner receives. In many animals, foraging behaviour changes in response to foraging gene expression or activation of the cGMP-dependent protein kinase (PKG) that foraging encodes. Here, we show that this highly conserved molecular mechanism affects the outcome of a plant-animal mutualism. We studied the two PKG genes of Allomerus octoarticulatus, an Amazonian ant that defends the ant-plant Cordia nodosa against herbivores...
September 13, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28902438/colony-level-behavioral-variation-correlates-with-differences-in-expression-of-the-foraging-gene-in-red-imported-fire-ants
#10
Alison A Bockoven, Craig J Coates, Micky D Eubanks
Among social insects, colony-level variation is likely to be widespread and have significant ecological consequences. Very few studies, however, have documented how genetic factors relate to behavior at the colony level. Differences in expression of the foraging gene have been associated with differences in foraging and activity of a wide variety of organisms. We quantified expression of the red imported fire ant foraging gene (sifor) in workers from 21 colonies collected across the natural range of Texas fire ant populations, but maintained under standardized, environmentally controlled conditions...
September 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28902322/evaluation-of-body-posture-in-nursing-students
#11
Marília Fernandes Andrade, Érika de Cássia Lopes Chaves, Michele Rita Oliveira Miguel, Talita Prado Simão, Denismar Alves Nogueira, Denise Hollanda Iunes
OBJECTIVE: To investigate the body posture of nursing students before and after clinical practice. METHOD: The study was developed in two stages. Initially the body posture of students of the 2nd, 4th, 6th, and 8th periods were assessed through photogrammetry. All images were analyzed in a random and masked manner with CorporisPro® 3.1.3 software. Three evaluations were performed for each angle and then the mean value was calculated. Two years later, when the 4th period students had developed their clinical internships, their body posture was again evaluated...
August 28, 2017: Revista da Escola de Enfermagem da U S P
https://www.readbyqxmd.com/read/28901723/the-arms-race-between-heliconiine-butterflies-and-passiflora-plants-new-insights-on-an-ancient-subject
#12
Érika C P de Castro, Mika Zagrobelny, Márcio Z Cardoso, Søren Bak
Heliconiines are called passion vine butterflies because they feed exclusively on Passiflora plants during the larval stage. Many features of Passiflora and heliconiines indicate that they have radiated and speciated in association with each other, and therefore this model system was one of the first examples used to exemplify coevolution theory. Three major adaptations of Passiflora plants supported arguments in favour of their coevolution with heliconiines: unusual variation of leaf shape within the genus; the occurrence of yellow structures mimicking heliconiine eggs; and their extensive diversity of defence compounds called cyanogenic glucosides...
September 13, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28900898/methods-for-practising-ethics-in-research-and-innovation-a-literature-review-critical-analysis-and-recommendations
#13
Wessel Reijers, David Wright, Philip Brey, Karsten Weber, Rowena Rodrigues, Declan O'Sullivan, Bert Gordijn
This paper provides a systematic literature review, analysis and discussion of methods that are proposed to practise ethics in research and innovation (R&I). Ethical considerations concerning the impacts of R&I are increasingly important, due to the quickening pace of technological innovation and the ubiquitous use of the outcomes of R&I processes in society. For this reason, several methods for practising ethics have been developed in different fields of R&I. The paper first of all presents a systematic search of academic sources that present and discuss such methods...
September 12, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28900155/inflexible-neurobiological-signatures-precede-atypical-development-in-infants-at-high-risk-for-autism
#14
Kristina Denisova, Guihu Zhao
Variability in neurobiological signatures is ubiquitous in early life but the link to adverse developmental milestones in humans is unknown. We examined how levels of signal and noise in movement signatures during the 1st year of life constrain early development in 71 healthy typically developing infants, either at High or Low familial Risk (HR or LR, respectively) for developing Autism Spectrum Disorders (ASD). Delays in early learning developmental trajectories in HR infants (validated in an analysis of 1,445 infants from representative infant-sibling studies) were predicted by worse stochastic patterns in their spontaneous head movements as early as 1-2 months after birth, relative to HR infants who showed more rapid developmental progress, as well as relative to all LR infants...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899734/anaesthetic-management-of-pregnant-patients-with-cardiac-implantable-electronic-devices-case-reports-and-review
#15
REVIEW
M M Salman, H I Kemp, M R Cauldwell, D P Dob, R Sutton
Heart disease is a leading cause of maternal mortality and morbidity. Pregnant women with structural, conduction or degenerative cardiac disease who require rhythm control or who are at high risk of sudden cardiac death may carry a cardiac implantable electronic device or may occasionally require the insertion of one during their pregnancy. These women are now encountered more frequently in clinical practice, and it is essential that a multidisciplinary approach, beginning from the early antenatal phase, be adopted in their counselling and management...
August 4, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28893207/hepatitis-b-virus-and-hiv-co-infection-among-pregnant-women-in-rwanda
#16
Mwumvaneza Mutagoma, Helene Balisanga, Samuel S Malamba, Dieudonné Sebuhoro, Eric Remera, David J Riedel, Steve Kanters, Sabin Nsanzimana
BACKGROUND: Hepatitis B virus (HBV) affects people worldwide but the local burden especially in pregnant women and their new born babies is unknown. In Rwanda HIV-infected individuals who are also infected with HBV are supposed to be initiated on ART immediately. HBV is easily transmitted from mother to child during delivery. We sought to estimate the prevalence of chronic HBV infection among pregnant women attending ante-natal clinic (ANC) in Rwanda and to determine factors associated with HBV and HIV co-infection...
September 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28892466/malignant-transformation-of-a-tailgut-cyst
#17
Gianrocco Manco, Giovanni Giliberti, Giovanni Rolando, Fabio Gelsomino, Elena Zunarelli, Aldo Rossi
INTRODUCTION: Tailgut cyst are congenital cystic lesion arising from remnant of the embryological postnatal gut. Tailgut cyst are multinodular, uncapsulated and usually well-circumscribed. Presacral cysts are rare in adult and most of the lesions are benign. Malignant degeneration can occur, however is extremely rare. CASE REPORT: We present the case of a 74 years old woman with slow increase in size and malignant degeneration of a tailgut cyst. Five years before, during the follow up after mastectomy for cancer, she manifested rise of CA 19-9 tumor marker and a presacral cystic collection on thoraco-abdominal CT...
July 5, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28892138/toward-a-geography-of-omnivory-omnivores-increase-carnivory-when-sodium-is-limiting
#18
Natalie A Clay, Richard J Lehrter, Michael Kaspari
Toward understanding the geography of omnivory, we tested three hypotheses that predict the proportion of animal tissue consumed: The Sodium Limitation Hypothesis predicts that omnivores increase animal consumption in Na-poor environments because Na bioaccumulates from plants to predators; thus, heterotrophs are Na-rich sources. The Nitrogen Limitation and Habitat Productivity Hypotheses use the same logic to predict more animal consumption in N-poor and productive environments respectively. Omnivory is a common trophic strategy, but what determines the balance of plant and animal tissue omnivores consume is relatively unexplored...
September 11, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28891026/multitrophic-interactions-mediate-the-effects-of-climate-change-on-herbivore-abundance
#19
Ayla Robinson, David W Inouye, Jane E Ogilvie, Emily H Mooney
Climate change can influence the abundance of insect herbivores through direct and indirect mechanisms. In this study, we evaluated multitrophic drivers of herbivore abundance for an aphid species (Aphis helianthi) in a subalpine food web consisting of a host plant (Ligusticum porteri), mutualist ants and predatory lygus bugs (Lygus spp.). We used a model-selection approach to determine which climate and host plant cues best predict year-to-year variation in insect phenology and abundance observed over 6 years...
September 11, 2017: Oecologia
https://www.readbyqxmd.com/read/28890848/urbanization-alters-communities-of-flying-arthropods-in-parks-and-gardens-of-a-medium-sized-city
#20
Edward Lagucki, Justin D Burdine, Kevin E McCluney
Urbanization transforms undeveloped landscapes into built environments, causing changes in communities and ecological processes. Flying arthropods play important roles in these processes as pollinators, decomposers, and predators, and can be important in structuring food webs. The goal of this study was to identify associations between urbanization and the composition of communities of flying (and floating) arthropods within gardens and parks in a medium-sized mesic city. We predicted that flying arthropod abundance and diversity would respond strongly to percent impervious surface and distance to city center, measurements of urbanization...
2017: PeerJ
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