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https://www.readbyqxmd.com/read/28711467/retrospective-study-of-jellyfish-envenomation-in-emergency-wards-in-guadeloupe-between-2010-and-2016-when-to-diagnose-irukandji-syndrome
#1
Djoudi Bouyer-Monot, Stéphane Pelczar, Serge Ferracci, Denis Boucaud-Maitre
BACKGROUND: In Guadeloupe (French West Indies), many marine envenomation cases by jellyfish are observed. Some of them might induce an Irukandji syndrome (IS). The aim of this study was to analyse the clinical features of IS from the envenomation cases in the two public hospitals in Guadeloupe, and to compare them to non-IS stings. METHODS: All jellyfish envenomation cases between the 1st of January 2010 and the 1st of September 2016, from the emergencies data-base, have been extracted...
July 13, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28659604/long-term-monitoring-of-dolphin-biosonar-activity-in-deep-pelagic-waters-of-the-mediterranean-sea
#2
Francesco Caruso, Giuseppe Alonge, Giorgio Bellia, Emilio De Domenico, Rosario Grammauta, Giuseppina Larosa, Salvatore Mazzola, Giorgio Riccobene, Gianni Pavan, Elena Papale, Carmelo Pellegrino, Sara Pulvirenti, Virginia Sciacca, Francesco Simeone, Fabrizio Speziale, Salvatore Viola, Giuseppa Buscaino
Dolphins emit short ultrasonic pulses (clicks) to acquire information about the surrounding environment, prey and habitat features. We investigated Delphinidae activity over multiple temporal scales through the detection of their echolocation clicks, using long-term Passive Acoustic Monitoring (PAM). The Istituto Nazionale di Fisica Nucleare operates multidisciplinary seafloor observatories in a deep area of the Central Mediterranean Sea. The Ocean noise Detection Experiment collected data offshore the Gulf of Catania from January 2005 to November 2006, allowing the study of temporal patterns of dolphin activity in this deep pelagic zone for the first time...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630482/circadian-and-circatidal-clocks-control-the-mechanism-of-semilunar-foraging-behaviour
#3
James F Cheeseman, Rachel M Fewster, Michael M Walker
How animals precisely time behaviour over the lunar cycle is a decades-old mystery. Experiments on diverse species show this behaviour to be endogenous and under clock control but the mechanism has remained elusive. We present new experimental and analytical techniques to test the hypotheses for the semilunar clock and show that the rhythm of foraging behaviour in the intertidal isopod, Scyphax ornatus, can be precisely shifted by manipulating the lengths of the light/dark and tidal cycles. Using light T-cycles (Tcd) the resultant semilunar beat period undergoes shifts from 14...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28594864/consistency-in-the-supply-of-larval-fishes-among-coral-reefs-in-french-polynesia
#4
Marc Besson, Camille Gache, Rohan M Brooker, Rakamaly Madi Moussa, Viliame Pita Waqalevu, Moana LeRohellec, Vincent Jaouen, Kévin Peyrusse, Cécile Berthe, Frédéric Bertucci, Hugo Jacob, Christophe Brié, Bruno Wan, René Galzin, David Lecchini
For marine fishes with a bipartite life cycle, pelagic larval dispersal can shape the distribution, connectivity, composition and resilience of adult populations. Numerous studies of larval dispersal, and associated settlement and recruitment processes, have examined the relationship between population connectivity and oceanographic features. However, relatively little is known about spatial and temporal variation in the abundance of larvae settling among different reefs and the extent to which the species assemblage of larvae settling at one location is reflective of the assemblage in neighbouring areas...
2017: PloS One
https://www.readbyqxmd.com/read/28553258/an-overview-of-monthly-rhythms-and-clocks
#5
REVIEW
Florian Raible, Hiroki Takekata, Kristin Tessmar-Raible
Organisms have evolved to cope with geophysical cycles of different period lengths. In this review, we focus on the adaptations of animals to the lunar cycle, specifically, on the occurrence of biological rhythms with monthly (circalunar) or semi-monthly (circasemilunar) period lengths. Systematic experimental investigation, starting in the early twentieth century, has allowed scientists to distinguish between mythological belief and scientific facts concerning the influence of the lunar cycle on animals. These studies revealed that marine animals of various taxa exhibit circalunar or circasemilunar reproductive rhythms...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28525979/the-association-between-lunar-phase-and-intracranial-aneurysm-rupture-myth-or-reality-own-data-and-systematic-review
#6
Adomas Bunevicius, Agne Gendvilaite, Vytenis Pranas Deltuva, Arimantas Tamasauskas
BACKGROUND: It is a common belief in medical community that lunar phases have an impact on human health. A growing body of evidence indicates that lunar phases can predict the risk to develop acute neurological and vascular disorders. The goal of present report was to present our institution data and to perform systematic review of studies examining the association of intracranial aneurysm rupture with moon phases. METHODS: We identified all patients admitted to our department for ruptured intracranial aneurysms in a period between November, 2011 and December, 2014...
May 19, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28483869/no-phenotypic-plasticity-in-nest-site-selection-in-response-to-extreme-flooding-events
#7
Liam D Bailey, Bruno J Ens, Christiaan Both, Dik Heg, Kees Oosterbeek, Martijn van de Pol
Phenotypic plasticity is a crucial mechanism for responding to changes in climatic means, yet we know little about its role in responding to extreme climatic events (ECEs). ECEs may lack the reliable cues necessary for phenotypic plasticity to evolve; however, this has not been empirically tested. We investigated whether behavioural plasticity in nest-site selection allows a long-lived shorebird (Haematopus ostralegus) to respond to flooding. We collected longitudinal nest elevation data on individuals over two decades, during which time flooding events have become increasingly frequent...
June 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28469170/the-diet-of-a-nocturnal-pelagic-predator-the-bulwer-s-petrel-across-the-lunar-cycle
#8
S Waap, W O C Symondson, J P Granadeiro, H Alonso, C Serra-Gonçalves, M P Dias, P Catry
The lunar cycle is believed to strongly influence the vertical distribution of many oceanic taxa, with implications for the foraging behaviour of nocturnal marine predators. Most studies to date testing lunar effects on foraging have focused on predator activity at-sea, with some birds and marine mammals demonstrating contrasting behavioural patterns, depending on the lunar-phase. However, to date no study has focused on how the lunar cycle might actually affect predator-prey interactions in the upper layers of the ocean...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28467676/impacts-of-temperature-and-lunar-day-on-gene-expression-profiles-during-a-monthly-reproductive-cycle-in-the-brooding-coral-pocillopora-damicornis
#9
Camerron M Crowder, Eli Meyer, Tung-Yung Fan, Virginia M Weis
Reproductive timing in brooding corals has been correlated to temperature and lunar irradiance, but the mechanisms by which corals transduce these environmental variables into molecular signals is unknown. To gain insight into these processes, global gene expression profiles in the coral Pocillopora damicornis were examined (via RNA-Seq) across lunar phases and between temperature treatments, during a monthly planulation cycle. The interaction of temperature and lunar day together had the largest influence on gene expression...
May 3, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28418218/regulation-of-salt-marsh-mosquito-populations-by-the-18-6-year-lunar-nodal-cycle
#10
Ilia Rochlin, James T Morris
The 18.6-year lunar-nodal cycle drives changes in tidal amplitude globally, affecting coastal habitat formation, species and communities inhabiting rocky shores, and salt marsh vegetation. However, the cycle's influence on salt marsh fauna lacked sufficient long-term data for testing its effect. We circumvented this problem by using salt marsh mosquito records obtained over a period of over four decades in two estuaries in the northeastern USA. Salt marsh mosquito habitat is near the highest tide level where the impact of the nodal cycle on flood frequency is greatest...
April 18, 2017: Ecology
https://www.readbyqxmd.com/read/28418034/light-and-circadian-controlled-genes-respond-to-a-broad-light-spectrum-in-puffer-fish-derived-fugu-eye-cells
#11
Keiko Okano, Shoichi Ozawa, Hayao Sato, Sawa Kodachi, Masaharu Ito, Toshiaki Miyadai, Akihiro Takemura, Toshiyuki Okano
Some cell lines retain intrinsic phototransduction pathways to control the expression of light-regulated genes such as the circadian clock gene. Here we investigated the photosensitivity of a Fugu eye, a cell line established from the eye of Takifugu rubripes, to examine whether such a photosensitive nature is present. Microarray analysis identified 15 genes that showed blue light-dependent change at the transcript level. We investigated temporal profiles of the light-induced genes, as well as Cry and Per, under light-dark, constant light (LL), and constant dark (DD) conditions by quantitative RT-PCR...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28374651/relationship-between-lunar-cycle-and-haemorrhagic-complication-rate-in-surgery
#12
Edoardo Raposio, Giorgia Caruana, Pierluigi Santi, Ferdinando Cafiero
BACKGROUND: The aim of this study was to evaluate a possible relationship between lunar cycles and haemorrhagic complication rate in surgery. MATERIALS AND METHODS: The possible relationship between moon phases and surgical outcome was tested by evaluating the haemorrhagic complication rate for 18,760 patients who underwent surgery between January 2001 and December 2008 at the National Institute for Cancer Research in Genoa. A total of 103 lunar phases were considered using Chi-square (χ(2)) test analysis, and patients were allocated a surgery date...
April 4, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28258604/the-effect-of-lunisolar-tidal-acceleration-on-stem-elongation-growth-nutations-and-leaf-movements-in-peppermint-mentha%C3%A2-%C3%A3-%C3%A2-piperita-l
#13
U Zajączkowska, P W Barlow
Orbital movement of the Moon generates a system of gravitational fields that periodically alter the gravitational force on Earth. This lunar tidal acceleration (Etide) is known to act as an external environmental factor affecting many growth and developmental phenomena in plants. Our study focused on the lunar tidal influence on stem elongation growth, nutations and leaf movements of peppermint. Plants were continuously recorded with time-lapse photography under constant illumination as well in constant illumination following 5 days of alternating dark-light cycles...
March 3, 2017: Plant Biology
https://www.readbyqxmd.com/read/28214372/canonical-and-cellular-pathways-timing-gamete-release-in-acropora-digitifera-okinawa-japan
#14
Y Rosenberg, T Doniger, S Harii, F Sinniger, O Levy
Natural light cycles are important for synchronizing behavioural and physiological rhythms over varying time periods in both plants and animals. An endogenous clock, regulated by positive and negative elements, interacting in feedback loops controls these rhythms. Many corals exhibit diel cycles of polyp expansion and contraction entrained by solar light patterns and monthly cycles of spawning or planulation that correspond to nocturnal lunar light cycles. However, despite considerable interest in studies of coral reproduction, there is currently not enough molecular information about the cellular pathways involved with synchronizing spawning/planulation in broadcast spawners and brooders...
February 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28161040/heavy-pollution-episodes-transport-pathways-and-potential-sources-of-pm2-5-during-the-winter-of-2013-in-chengdu-china
#15
Tingting Liao, Shan Wang, Jie Ai, Ke Gui, Bolong Duan, Qi Zhao, Xiao Zhang, Wanting Jiang, Yang Sun
Air mass concentration data from 8 environmental quality monitoring sites and meteorological data of Chengdu from 1 December 2013 to 28 February 2014 were used in this study. Chengdu suffered five continuous heavy pollutions during this winter due to the basin terrain and the meteorological conditions of low wind speed, low precipitation and high relative humidity. Analysing the hourly resolution time series of pollutants' concentrations, variation of PM2.5 in the urban area followed a growing "saw-tooth cycle" pattern during the heavy pollution, with a daily cycle of bimodal distribution...
April 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28141890/transcriptome-dynamics-over-a-lunar-month-in-a-broadcast-spawning-acroporid-coral
#16
Matthew J Oldach, Matthew Workentine, Mikhail V Matz, Tung-Yung Fan, Peter D Vize
On one night per year, at a specific point in the lunar cycle, one of the most extraordinary reproductive events on the planet unfolds as hundreds of millions of broadcast spawning corals release their trillions of gametes into the waters of the tropical seas. Each species spawns on a specific night within the lunar cycle, typically from full moon to third quarter moon, and in a specific time window after sunset. This accuracy is essential to achieve efficient fertilization in the vastness of the oceans. In this report, we use transcriptome sequencing at noon and midnight across an entire lunar cycle to explore how acroporid corals interpret lunar signals...
May 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28115741/bipolar-mood-cycles-and-lunar-tidal-cycles
#17
T A Wehr
In 17 patients with rapid cycling bipolar disorder, time-series analyses detected synchronies between mood cycles and three lunar cycles that modulate the amplitude of the moon's semi-diurnal gravimetric tides: the 14.8-day spring-neap cycle, the 13.7-day declination cycle and the 206-day cycle of perigee-syzygies ('supermoons'). The analyses also revealed shifts among 1:2, 1:3, 2:3 and other modes of coupling of mood cycles to the two bi-weekly lunar cycles. These shifts appear to be responses to the conflicting demands of the mood cycles' being entrained simultaneously to two different bi-weekly lunar cycles with slightly different periods...
January 24, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28068148/element-cycling-and-energy-flux-responses-in-ecosystem-simulations-conducted-at-the-chinese-lunar-palace-1
#18
Chen Dong, Yuming Fu, Beizhen Xie, Minjuan Wang, Hong Liu
Bioregenerative life-support systems (BLSS) address interactions between organisms and their environment as an integrated system through the study of factors that regulate the pools and fluxes of materials and energy through ecological systems. As a simple model, using BLSS is very important in the investigation of element cycling and energy flux for sustainable development on Earth. A 105-day experiment with a high degree of closure was carried out in this system from February to May, 2014, with three volunteers...
January 2017: Astrobiology
https://www.readbyqxmd.com/read/28046047/expectation-or-sensorial-reality-an-empirical-investigation-of-the-biodynamic-calendar-for-wine-drinkers
#19
Wendy V Parr, Dominique Valentin, Phil Reedman, Claire Grose, James A Green
The study's aim was to investigate a central tenet of biodynamic philosophy as applied to wine tasting, namely that wines taste different in systematic ways on days determined by the lunar cycle. Nineteen New Zealand wine professionals tasted blind 12 Pinot noir wines at times determined within the biodynamic calendar for wine drinkers as being favourable (Fruit day) and unfavourable (Root day) for wine tasting. Tasters rated each wine four times, twice on a Fruit day and twice on a Root day, using 20 experimenter-provided descriptors...
2017: PloS One
https://www.readbyqxmd.com/read/27928860/physical-activity-subjective-sleep-quality-and-time-in-bed-do-not-vary-by-moon-phase-in-german-adolescents
#20
Maia P Smith, Marie Standl, Holger Schulz, Joachim Heinrich
Lunar periodicity in human biology and behaviour, particularly sleep, has been reported. However, estimated relationships vary in direction (more or less sleep with full moon) if they exist at all, and studies tend to be so small that there is potential for confounding by weekly or monthly cycles. Lunar variation in physical activity has been posited as a driver of this relationship, but is likewise not well studied. We explore the association between lunar cycle, sleep and physical activity in a population-based sample of 1411 Germans age 14-17 years (46% male)...
December 8, 2016: Journal of Sleep Research
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