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https://www.readbyqxmd.com/read/29670140/moonlight-controls-lunar-phase-dependency-and-regular-oscillation-of-clock-gene-expressions-in-a-lunar-synchronized-spawner-fish-goldlined-spinefoot
#1
Yuki Takeuchi, Ryo Kabutomori, Chihiro Yamauchi, Hitomi Miyagi, Akihiro Takemura, Keiko Okano, Toshiyuki Okano
Goldlined spinefoot, Siganus guttatus, inhabits tropical and subtropical waters and synchronizes its spawning around the first quarter moon likely using an hourglass-like lunar timer. In previous studies, we have found that clock genes (Cryptochrome3 and Period1) could play the role of state variable in the diencephalon when determining the lunar phase for spawning. Here, we identified three Cry, two Per, two Clock, and two Bmal genes in S. guttatus and investigated their expression patterns in the diencephalon and pituitary gland...
April 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29625122/periodic-regulation-of-expression-of-genes-for-kisspeptin-gonadotropin-inhibitory-hormone-and-their-receptors-in-the-grass-puffer-implications-in-seasonal-daily-and-lunar-rhythms-of-reproduction
#2
REVIEW
Hironori Ando, Shahjahan, Takashi Kitahashi
The seasonal, daily and lunar control of reproduction involves photoperiodic, circadian and lunar changes in the activity of kisspeptin, gonadotropin-inhibitory hormone (GnIH) and gonadotropin-releasing hormone (GnRH) neurons. These changes are brought through complex networks of light-, time- and non-photic signal-dependent control mechanisms, which are mostly unknown at present. The grass puffer, Takifugu alboplumbeus, a semilunar spawner, provides a unique and excellent animal model to assess this question because its spawning is synchronized with seasonal, daily and lunar cycles...
April 3, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29622832/lunar-cycle-may-have-an-effect-on-shock-wave-lithotripsy-related-pain-outcome
#3
Hüsnü Tokgöz, Soner Yalçınkaya, Ekrem İslamoğlu, Kaan Karamık, Özlem Tokgöz, Murat Savaş
Objectives: We tried to investigate the effects of lunar phase on Shock Wave Lithotripsy (SWL) related pain. In addition, correlation of various clinical parameters with the pain perception during SWL procedure, were also investigated. Methods: A total of 378 patients who underwent first SWL sessions for renal or ureteral stones were prospectively enrolled in the study. The degree of pain perception during the procedure was evaluated with 10-point visual analog scale (VAS) and pain questionnaires...
December 2017: Ghana Medical Journal
https://www.readbyqxmd.com/read/29618779/circatrigintan-instead-of-lunar-periodicity-of-larval-release-in-a-brooding-coral-species
#4
Bart Linden, Jef Huisman, Baruch Rinkevich
Larval release by brooding corals is often assumed to display lunar periodicity. Here, we show that larval release of individual Stylophora pistillata colonies does not comply with the assumed tight entrainment by the lunar cycle, and can better be classified as a circatrigintan pattern. The colonies exhibited three distinct reproductive patterns, characterized by short intervals, long intervals and no periodicity between reproductive peaks, respectively. Cross correlation between the lunar cycle and larval release of the periodic colonies revealed an approximately 30-day periodicity with a variable lag of 5 to 10 days after full moon...
April 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29459700/split-spawning-realigns-coral-reproduction-with-optimal-environmental-windows
#5
Taryn Foster, Andrew J Heyward, James P Gilmour
Split spawning in coral populations occurs when gamete maturation and mass spawning are split over two consecutive months. While split spawning has been observed at many reefs, little is known about the frequency and significance of these events. Here we show that split spawning occurred frequently and predictably over a decade at Scott Reef. Split spawning overlays the biannual spawning pattern in the region and occurs when the full moon falls in the first week of the usual spawning month, or the last week of the previous month...
February 19, 2018: Nature Communications
https://www.readbyqxmd.com/read/29370541/effects-of-lunar-phases-on-short-term-explosive-physical-performance-among-young-trained-athletes
#6
Narimen Yousfi, Mohamed Arbi Mejri, Mehdi Rouissi, Amri Hammami, Montassar Tabben, Anis Chaouachi, Monoem Haddad, Karim Chamari
Beliefs that lunar phases affect human physiology started in ancient times. Research has recently revealed that a physical fitness index increased in sedentary students at the new moon (NM) and full moon (FM) compared to other moon phases. However, the effect of lunar cycle (moon illumination and gravitational pull) on physical performance in athletes was not examined. Therefore, this study aimed to evaluate whether short-term explosive performance can be influenced by the different phases of the lunar cycle...
January 25, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29367717/sensitivity-to-lunar-cycles-prior-to-the-2007-eruption-of-ruapehu-volcano
#7
Társilo Girona, Christian Huber, Corentin Caudron
A long-standing question in Earth Science is the extent to which seismic and volcanic activity can be regulated by tidal stresses, a repeatable and predictable external excitation induced by the Moon-Sun gravitational force. Fortnightly tides, a ~14-day amplitude modulation of the daily tidal stresses that is associated to lunar cycles, have been suggested to affect volcano dynamics. However, previous studies found contradictory results and remain mostly inconclusive. Here we study how fortnightly tides have affected Ruapehu volcano (New Zealand) from 2004 to 2016 by analysing the rolling correlation between lunar cycles and seismic amplitude recorded close to the crater...
January 24, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29299282/inducing-broadcast-coral-spawning-ex-situ-closed-system-mesocosm-design-and-husbandry-protocol
#8
Jamie Craggs, James R Guest, Michelle Davis, Jeremy Simmons, Ehsan Dashti, Michael Sweet
For many corals, the timing of broadcast spawning correlates strongly with a number of environmental signals (seasonal temperature, lunar, and diel cycles). Robust experimental studies examining the role of these putative cues in triggering spawning have been lacking until recently because it has not been possible to predictably induce spawning in fully closed artificial mesocosms. Here, we present a closed system mesocosm aquarium design that utilizes microprocessor technology to accurately replicate environmental conditions, including photoperiod, seasonal insolation, lunar cycles, and seasonal temperature from Singapore and the Great Barrier Reef (GBR), Australia...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29276130/-reproductive-behavior-of-the-green-birdmouth-wrasse-gomphosus-caeruleus-on-a-reunion-island-reef-mode-of-reproduction-environmental-factors-and-reproductive-strategy-alternation
#9
Thomas Desvignes, Philippe Bourjon, Bruno Chanet
The green birdmouth wrasse Gomphosus caeruleus is present all year round on the coral reefs of Reunion Island (Indian Ocean). A group of individuals was followed on one of these reefs with the objective of studying the reproduction mode of the species, the influence of environmental factors, and social behaviors on the control of reproduction. Our observations revealed that G. caeruleus is, like many Labridae, a protogynous hermaphrodite species, probably diandric, that the reproduction of G. caeruleus is, like in other reef fish species, influenced by the lunar cycle with a peak of reproductive activity during waxing gibbous phase, and that G...
January 2018: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/29080754/bovine-chronic-besnoitiosis-in-a-calf-characterization-of-a-novel-b-besnoiti-isolate-from-an-unusual-case-report
#10
C Diezma-Díaz, A Jiménez-Meléndez, M Fernández, D Gutiérrez-Expósito, P García-Lunar, L M Ortega-Mora, J A Pérez-Salas, J Blanco-Murcia, I Ferre, G Álvarez-García
Bovine besnoitiosis, caused by the apicomplexan Besnoitia besnoiti, is a chronic and debilitating disease characterized by cutaneous and systemic manifestations that primarily affects adult beef cattle. Previous studies have reported that clinical besnoitiosisis is rare in calves. However, we isolated B. besnoiti from a chronically infected calf for the first time. The identity of the Besnoitia species was determined after parasite isolation and molecular genotyping. According to the results obtained in vitro the new isolate, named as Bb-Spain3, was characterized in a reproducible in vitro model and was categorized as a low invader and low prolific isolate with a slower lytic cycle compared to Bb-Spain 1 isolate...
November 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/29032595/born-at-the-right-time-a-conceptual-framework-linking-reproduction-development-and-settlement-in-reef-fish
#11
J S Shima, E G Noonburg, S E Swearer, S H Alonzo, C W Osenberg
Parents are expected to make decisions about reproductive timing and investment that maximize their own fitness, even if this does not maximize the fitness of each individual offspring. When offspring survival is uncertain, selection typically favors iteroparity, which means that offspring born at some times can be disadvantaged, while others get lucky. The eventual fate of offspring may be further modified by their own decisions. Are fates of offspring set by birthdates (i.e., determined by parents), or can offspring improve upon the cards they've been dealt? If so, do we see adaptive plasticity in the developmental timing of offspring? We evaluate these questions for a coral reef fish (the sixbar wrasse, Thalassoma hardwicke) that is characterized by extreme iteroparity and flexible larval development...
January 2018: Ecology
https://www.readbyqxmd.com/read/29020114/how-annual-course-of-photoperiod-shapes-seasonal-behavior-of-diploid-and-triploid-oysters-crassostrea-gigas
#12
Laura Payton, Mohamedou Sow, Jean-Charles Massabuau, Pierre Ciret, Damien Tran
In this work, we study if ploidy (i.e. number of copies of chromosomes) in the oyster Crassostrea gigas may introduce differences in behavior and in its synchronization by the annual photoperiod. To answer to the question about the effect of the seasonal course of the photoperiod on the behavior of C. gigas according to its ploidy, we quantified valve activity by HFNI valvometry in situ for 1 year in both diploid and triploid oysters. Chronobiological analyses of daily, tidal and lunar rhythms were performed according the annual change of the photoperiod...
2017: PloS One
https://www.readbyqxmd.com/read/28993497/marine-biorhythms-bridging-chronobiology-and-ecology
#13
Martin Bulla, Thomas Oudman, Allert I Bijleveld, Theunis Piersma, Charalambos P Kyriacou
Marine organisms adapt to complex temporal environments that include daily, tidal, semi-lunar, lunar and seasonal cycles. However, our understanding of marine biological rhythms and their underlying molecular basis is mainly confined to a few model organisms in rather simplistic laboratory settings. Here, we use new empirical data and recent examples of marine biorhythms to highlight how field ecologists and laboratory chronobiologists can complement each other's efforts. First, with continuous tracking of intertidal shorebirds in the field, we reveal individual differences in tidal and circadian foraging rhythms...
November 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28870250/moon-phases-and-moon-signs-do-not-influence-morbidity-mortality-and-long-term-survival-after-living-donor-kidney-transplantation
#14
A Kleespies, M Mikhailov, P N Khalil, S Pratschke, A Khandoga, M Stangl, W D Illner, M K Angele, K W Jauch, M Guba, J Werner, M Rentsch
BACKGROUND: Approximately 11% of the German population are convinced that certain moon phases and moon signs may impact their health and the onset and clinical course of diseases. Before elective surgery, a considerable number of patients look to optimize the timing of the procedure based on the lunar cycle. Especially patients awaiting living donor kidney transplantation (LDKT) commonly look for an adjustment of the date of transplantation according to the moon calendar. This study therefore investigated the perioperative and long-term outcome of LDKT dependent on moon phases and zodiac signs...
September 4, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28841578/psychiatric-presentations-during-all-4-phases-of-the-lunar-cycle
#15
Omar J Francis, Bryan J Kopke, Anthony J Affatato, Robert W Jarski
Context • Anecdotal evidence concerning a relationship between human illnesses and a full moon is frequently claimed by as many as 81% of mental health workers. Previous scientific investigations have studied only the full-moon phase and its possible effect on psychiatric presentations. However, information is limited about all 4 phases of the lunar cycle and their effects on different types of psychiatric disorders. Objective • This study primarily intended to evaluate the number of psychiatric presentations to a hospital's emergency department across all 4 phases of the lunar cycle...
July 2017: Advances in Mind-body Medicine
https://www.readbyqxmd.com/read/28808559/reproductive-cycles-in-tropical-intertidal-gastropods-are-timed-around-tidal-amplitude-cycles
#16
Rachel Collin, Kecia Kerr, Gina Contolini, Isis Ochoa
Reproduction in iteroparous marine organisms is often timed with abiotic cycles and may follow lunar, tidal amplitude, or daily cycles. Among intertidal marine invertebrates, decapods are well known to time larval release to coincide with large amplitude nighttime tides, which minimizes the risk of predation. Such bimonthly cycles have been reported for few other intertidal invertebrates. We documented the reproduction of 6 gastropod species from Panama to determine whether they demonstrate reproductive cycles, whether these cycles follow a 2-week cycle, and whether cycles are timed so that larval release occurs during large amplitude tides...
August 2017: Ecology and Evolution
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
#17
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...
October 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
#18
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
#19
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
#20
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
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