Rostocker Meeresbiologische Beiträge
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Scuba Diving History
Scuba diving history Scuba history from a diving bell developed by Guglielmo de Loreno in 1535 up to John Bennett’s dive in the Philippines to amazing 308 meter in 2001 and much more… Humans have been diving since man was required to collect food from the sea. The need for air and protection under water was obvious. Let us find out how mankind conquered the sea in the quest to discover the beauty of the under water world. 1535 – A diving bell was developed by Guglielmo de Loreno. 1650 – Guericke developed the first air pump. 1667 – Robert Boyle observes the decompression sickness or “the bends”. After decompression of a snake he noticed gas bubbles in the eyes of a snake. 1691 – Another diving bell a weighted barrels, connected with an air pipe to the surface, was patented by Edmund Halley. 1715 – John Lethbridge built an underwater cylinder that was supplied via an air pipe from the surface with compressed air. To prevent the water from entering the cylinder, greased leather connections were integrated at the cylinder for the operators arms. 1776 – The first submarine was used for a military attack. 1826 – Charles Anthony and John Deane patented a helmet for fire fighters. This helmet was used for diving too. This first version was not fitted to the diving suit. The helmet was attached to the body of the diver with straps and air was supplied from the surfa 1837 – Augustus Siebe sealed the diving helmet of the Deane brothers’ to a watertight diving suit and became the standard for many dive expeditions. -
History of Scuba Diving About 500 BC: (Informa on Originally From
History of Scuba Diving nature", that would have taken advantage of this technique to sink ships and even commit murders. Some drawings, however, showed different kinds of snorkels and an air tank (to be carried on the breast) that presumably should have no external connecons. Other drawings showed a complete immersion kit, with a plunger suit which included a sort of About 500 BC: (Informaon originally from mask with a box for air. The project was so Herodotus): During a naval campaign the detailed that it included a urine collector, too. Greek Scyllis was taken aboard ship as prisoner by the Persian King Xerxes I. When Scyllis learned that Xerxes was to aack a Greek flolla, he seized a knife and jumped overboard. The Persians could not find him in the water and presumed he had drowned. Scyllis surfaced at night and made his way among all the ships in Xerxes's fleet, cung each ship loose from its moorings; he used a hollow reed as snorkel to remain unobserved. Then he swam nine miles (15 kilometers) to rejoin the Greeks off Cape Artemisium. 15th century: Leonardo da Vinci made the first known menon of air tanks in Italy: he 1772: Sieur Freminet tried to build a scuba wrote in his Atlanc Codex (Biblioteca device out of a barrel, but died from lack of Ambrosiana, Milan) that systems were used oxygen aer 20 minutes, as he merely at that me to arficially breathe under recycled the exhaled air untreated. water, but he did not explain them in detail due to what he described as "bad human 1776: David Brushnell invented the Turtle, first submarine to aack another ship. -
Distribution and Abundance Patterns of Echinoderms in the Fjord and Channel Complex from a Subantarctic North Patagonian Ice Field, Magellan Region
Distribution and abundance patterns of echinoderms in the fjord and channel complex from a subantarctic north Patagonian Ice field, Magellan region Erika Mutschke1, Dieter Gerdes2 & Carlos Ríos1 1. Laboratorio de Hidrobiología, Instituto de la Patagonia, Universidad de Magallanes, Av Bulnes 01855, P.O. Box 113-D. Punta Arenas, Chile; [email protected] 2. Alfred Wegener Institut. Helmholtz-Zentrum für Polar und Meeresforschung. Columbusstr. 27570 Bremerhaven, Germany. Received 26-IV-2017. Corrected 15-V-2017. Accepted 25-VI-2017. Abstract: The existence of latitudinal marine biodiversity gradients from low to high-southern latitudes is a controversial issue regarding the marine biogeographic division in the Southeastern Pacific. In this region, the Northern Patagonian Icefield is considered a break point for faunistic elements derived from more northern or southern biogeographical realms. However, the division seems to be better defined by distribution patterns and endemism of specific marine taxa. There have been no exhaustive latitudinal benthic inventories compiled along the southern-eastern Pacific Chilean coastline. This study focuses on the spatial distribution variability and relative abundance of the sublittoral echinoderm assemblages and uses them to establish an evaluation of zoogeographic relationship in the Southeastern Pacific and Atlantic Oceans. This is the first time echinoderms have been used for this purpose. A total 3 665 echinoderm specimens were collected in two cruises. Within this organism pool, 29 species were distinguished, belonging to the asteroids (17 species), echinoids (6 species), ophiuroids (4 species) and holothurians (2 species); crinoids were not found. The dominant species were the asteroid Ctenodiscus procurator, the echinoid Pseudechinus magellanicus, the ophiuroid Ophiuroglypha lymani, and the irregular sea urchin Tripylaster philippii. -
Sexually Transmitted Diseases Treatment Guidelines, 2015
Morbidity and Mortality Weekly Report Recommendations and Reports / Vol. 64 / No. 3 June 5, 2015 Sexually Transmitted Diseases Treatment Guidelines, 2015 U.S. Department of Health and Human Services Centers for Disease Control and Prevention Recommendations and Reports CONTENTS CONTENTS (Continued) Introduction ............................................................................................................1 Gonococcal Infections ...................................................................................... 60 Methods ....................................................................................................................1 Diseases Characterized by Vaginal Discharge .......................................... 69 Clinical Prevention Guidance ............................................................................2 Bacterial Vaginosis .......................................................................................... 69 Special Populations ..............................................................................................9 Trichomoniasis ................................................................................................. 72 Emerging Issues .................................................................................................. 17 Vulvovaginal Candidiasis ............................................................................. 75 Hepatitis C ......................................................................................................... 17 Pelvic Inflammatory -
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Vol. 15: 135–144, 2012 AQUATIC BIOLOGY Published May 15 doi: 10.3354/ab00410 Aquat Biol Green sea urchins structure invertebrate and macroalgal communities in the Magellan Strait, southern Chile Emma M. Newcombe1,2,4, César A. Cárdenas2,3,*, Shane W. Geange3 1Instituto Antártico Chileno, Plaza Muñoz Gamero 1055, Punta Arenas, Chile 2Centro de Estudios del Cuaternario (CEQUA), 21 de Mayo 1690, Punta Arenas, Chile 3School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand 4Present address: Cawthron Institute, Nelson 7010, New Zealand ABSTRACT: Although sea urchins play a central role in determining the structure and functioning of macroalgal communities in many parts of the world, past research in southern Chile has failed to identify strong effects of urchin grazing, despite the prevalence of coralline-dominated commu- nities and abundant urchins, which indicate a likely structuring role for urchins. Here, we con- ducted experimental removals of the most common urchin, the green sea urchin Arbacia dufres- nii, on a single bedrock wall in the Magellan Strait, Chile. We monitored the responses of invertebrate and macroalgal communities relative to a control wall 6 times over 64 wk. The struc- ture of macroalgal communities on each wall remained similar until more than 40 wk after urchin removal, at which time the community structure diverged, with significantly more macroalgae present on the urchin removal wall. These changes coincided with the onset of early summer and were likely driven by greater settlement, recruitment and growth of algae in the absence of urchins. After 64 wk, the abundance of chitons, bryozoans, mussels and the small bivalve Hiatella solida was also significantly greater on the urchin removal wall. -
Photoperiod in Aquaculture of the Sea Urchin Arbacia Dufresnii (Echinodermata: Echinoidea): Effects on Gamete Production and Maturity
Sepúlveda, L.R., Fernandez, J.P., Vera-Piombo, M., Chaar, F.B., & Rubilar, T. (2021). Photoperiod in aquaculture of the sea urchin Arbacia dufresnii (Echinodermata: Echinoidea): Effects on gamete production and maturity. Revista de Biología Tropical, 69(S1), 464- 473. DOI 10.15517/rbt.v69iSuppl.1.46386 DOI 10.15517/rbt.v69iSuppl.1.46386 Photoperiod in aquaculture of the sea urchin Arbacia dufresnii (Echinodermata: Echinoidea): Effects on gamete production and maturity Lucas R. Sepúlveda1,2 Jimena Pía Fernandez1,2 Mercedes Vera-Piombo1,2 Florencia Belén Chaar2,3 Tamara Rubilar 1,2* 1. Biological Oceanography Laboratory, Centro para el Estudio de Sistemas Marinos, Centro Nacional Patagónico, Consejo Nacional de Investigaciones Científicas y Técnicas, Bv. Alte. Brown 2915, Puerto Madryn, Argentina; [email protected], [email protected], [email protected] 2. Laboratory of Chemistry of Marine Organisms. Instituto Patagónico el Mar. Faculty of Natural Sciences and Health Sciences. National University of Patagonia San Juan Bosco. Puerto Madryn. Argentina; [email protected] (*Correspondence). 3. National University of Patagonia San Juan Bosco, Bv. Alte. Brown 3051, Puerto Madryn, Argentina; [email protected] Received 17-VII-2020. Corrected 25-VIII-2020. Accepted 05-X-2020. ABSTRACT Introduction: Photoperiod is, together with temperature and food availability, one of the main stimuli in the regulation of gametogenesis in a wide variety of species. Objective: To evaluate the effect of photoperiod on the production of mature gametes in cultured Arbacia dufresnii. Methods: An experiment was carried out with three varying light-dark regimes/treatments: constant light (24 h light), neutral photoperiod (12 h light, 12 h darkness), and constant darkness (24 h darkness). -
2 Accidents De Décompression D'origine Médullaire En
AIX-MARSEILLE UNIVERSITE Président : Yvon BERLAND FACULTE DES SCIENCES MEDICALES ET PARAMEDICALES Administrateur provisoire: Georges LEONETTI Affaires Générales : Patrick DESSI Professions Paramédicales : Philippe BERBIS Assesseurs : aux Etudes : Jean-Michel VITON à la Recherche : Jean-Louis MEGE aux Prospectives Hospitalo-Universitaires : Frédéric COLLART aux Enseignements Hospitaliers : Patrick VILLANI à l’Unité Mixte de Formation Continue en Santé : Fabrice BARLESI pour le Secteur Nord : Stéphane BERDAH aux centres hospitaliers non universitaires : Jean-Noël ARGENSON Chargés de mission : 1er cycle : Jean-Marc DURAND et Marc BARTHET 2ème cycle : Marie-Aleth RICHARD 3eme cycle DES/DESC : Pierre-Edouard FOURNIER Licences-Masters-Doctorat : Pascal ADALIAN DU-DIU : Véronique VITTON Stages Hospitaliers : Franck THUNY Sciences Humaines et Sociales : Pierre LE COZ Préparation à l’ECN : Aurélie DAUMAS Démographie Médicale et Filiarisation : Roland SAMBUC Relations Internationales : Philippe PAROLA Etudiants : Arthur ESQUER Chef des services généraux : Déborah ROCCHICCIOLI Chefs de service : Communication : Laetitia DELOUIS Examens : Caroline MOUTTET Intérieur : Joëlle FAVREGA Maintenance : Philippe KOCK Scolarité : Christine GAUTHIER DOYENS HONORAIRES M. Yvon BERLAND M. André ALI CHERIF M. Jean-François PELLISSIER Mis à jour 01/01/2019 PROFESSEURS HONORAIRES MM AGOSTINI Serge MM FAVRE Roger ALDIGHIERI René FIECHI Marius ALESSANDRINI Pierre FARNARIER Georges ALLIEZ Bernard FIGARELLA Jacques AQUARON Robert FONTES Michel -
Pacific Northwest Diver BI-MONTHLY MAGAZINE & WEB SITE PROMOTING UNDERWATER PHOTOGRAPHY, EDUCATION, & TRAVEL in the PACIFIC NORTHWEST | JANUARY, 2012
PPacificUBLICATION OF THE PACIFIC Northwest NORTHWEST UNDERWATER PHOTOGRA DiverPHIC SOCIETY BRITISH COLUMBIA | WASHINGTON | OREGON | JANUARY, 2012 Page 1 Gunnel Condo | Janna Nichols Pacific Northwest Diver BI-MONTHLY MAGAZINE & WEB SITE PROMOTING UNDERWATER PHOTOGRAPHY, EDUCATION, & TRAVEL IN THE PACIFIC NORTHWEST | JANUARY, 2012 In this Issue 3 Nanaimo to Corvallis 3 Subscribing to Pacific Northwest Diver 3 From the Archives: First Underwater Photo, 1893 3 Featured Photographer: Janna Nichols 4 News Corner 7 REEF 7 Andy Lamb Joins PNW Diver Team 7 Underwater Photo Workshops 7 Call for Critter Photos 8 Nudibranch ID App 8 Congrats to Pat Gunderson & Laurynn Evans 8 Feartured Operator/Resort: Sea Dragon Charters 9 Photographers & Videographers 11 British Columbia: John Melendez 11 Washington: Mike Meagher 13 Oregon: Aaron Gifford 15 Dive Travel Corner 17 Grand Bahama Island: Dolphins, Sharks, & Cavern 17 La Paz: Whale Sharks, Sea Lions, & Hammerheads 17 Technical Corner 18 Subsee Super Macro 18 PNW Diver Team 20 iPhone Users: Your PDF viewer does not support active links. To view video and use other links, we suggest the ap Goodreader <http://www.goodiware.com/goodreader.html>. Page 2 Pacific Northwest Diver: In This Issue Welcome to the January issue of Pacific Northwest Diver! This issue’s featured photographer is Janna Nichols. Janna is well know to the dive community, as she is the outreach coordinator for REEF. Not only is she an outstanding creature ID”er”, she is an excellent photographer. Our featured operator is Sea Dragon Charters in Howe Sound and Nanaimo, and we will be checking out photos from John Melendez in Vancouver, BC, Mike Meagher in Bellingham (be sure to watch the newly hatched wolf eel swimming in front of dad), and Aaron Giffords from Corvallis diving off of Newport, Oregon. -
An Updated Short History of the British Diving Apparatus Manufacturers
18 The International Journal of Diving History The International Journal of Diving History 19 Fig. 1. Some key persons from the firm of Siebe Gorman. 1a. (Christian) Augustus Siebe An Updated Short History of the British Diving Apparatus (1788-1872). Company founder. Manufacturers, Siebe Gorman and Heinke 1b. William Augustus Gorman (formerly O’Gorman; 1834-1904). by Michael Burchett, HDS, and Robert Burchett, HDS. Joint partner with Henry H. Siebe (1830-1885) at Siebe & Gorman (later Siebe Gorman & Co.). PART 1. THE SIEBE GORMAN COMPANY 1c. Sir Robert Henry Davis Introduction 1a. 1b. 1c. (1870-1965). Managing Director This account endeavours to produce a short, updated history of the Siebe Gorman and Heinke of Siebe Gorman & Co. manufacturing companies using past and present sources of literature. It does not attempt to include every aspect of the two company histories, but concentrates on key events with an emphasis on 1d. Henry Albert Fleuss the manufacture of diving apparatus. However, an understanding of their histories is not complete (1851-1933). Designer of the first without some knowledge of the social history and values of the period. Victorian and Edwardian practical ‘self-contained breathing society engendered moral values such as hard work, thrift, obedience and loyalty within a class-ridden apparatus’. system, in which poverty, harsh working conditions and basic education were normal for the working 1e. Professor John Scott Haldane classes. With intelligence and application, people could ‘better themselves’ and gain respect in an age of (1860-1936). Diving physiologist innovation, when Britain led the industrial world. who produced the first naval The businesses of Augustus Siebe and ‘Siebe, Gorman’ (in one form or another) survived for over 170 ‘Decompression Dive Tables’. -
The Reproductive Cycle of the Sea Urchin Arbacia Lixula in Northwest
1 The reproductive cycle of the sea urchin Arbacia lixula in Northwest 2 Mediterranean: potential influence of temperature and photoperiod 3 4 Owen S. Wangensteen · Xavier Turon · Maria Casso · Creu Palacín 5 6 O. S. Wangensteen · M. Casso 7 Department of Animal Biology, University of Barcelona. 8 Av. Diagonal 643. Barcelona 08028, Spain 9 e-mail: [email protected] 10 11 X. Turon 12 Center for Advanced Studies of Blanes (CEAB-CSIC), 13 C. Accés a la Cala St. Francesc, 14. Blanes (Girona) 17300, Spain 14 15 C. Palacín 16 Department of Animal Biology and Institut de Recerca de la Biodiversitat (IRBio), 17 University of Barcelona. Av. Diagonal 643. Barcelona 08028, Spain 18 19 20 21 Abstract 22 23 We studied the reproductive cycle of the sea urchin Arbacia lixula in a subtidal population from 24 Northeast Spain over four years using a gonadosomatic index and gonad histology. Our results 25 show that the gonadosomatic index of A. lixula follows a seasonal cycle which peaks in May-July 26 and attains its lowest values in October-November every year. The time course of the 27 gonadosomatic index matched closely the photoperiod cycle. We also found a remarkable inter- 28 annual variability in the maximum value of gonadosomatic index, which correlated with mean 29 water temperature during the gonad growth period (winter and spring). Gonad histology was also in 30 agreement with a single gametogenic cycle per year in this species. We explored the application of 31 circular statistics to present and analyse gonadal development data, which allowed us to adequately 32 handle the high intra-individual variability detected, with several developmental stages commonly 33 found within the same gonad. -
Sea Urchins: Biology and Ecology
Sea Urchins: Biology and Ecology. Fourth Edition, Vol. 43. Editor: John M. Lawrence © 2020 Elsevier B.V. All rights reserved. https://doi.org/10.1016/B978-0-12-819570-3.00024-X Chapter 24 Arbacia Paola Gianguzza* Department of Earth and Marine Science, University of Palermo, CoNISMa, Palermo, Italy *Corresponding author: e-mail address: [email protected] 1 Species of Arbacia John Edward Gray named the regular sea urchin genus Arbacia (family Arbaciidae, order Arbacioida) in 1835. According to Agassiz (1842) and Mortensen (1935), Arbacia was a “nonsensical” name for a sea urchin genus. Harvey (1956) gave the most plausible explanation for the name, considering it a derivation of Arbaces, a secondary character in the historical poem Sardanapalus by Lord Byron, which was published in 1821, a few years before Gray’s work. Arbacia is a small genus well known from Miocene age (Smith, 2005). All the members of this genus show morphological similarities (Mortensen, 1943). The test, formed from regularly arranged plates, is rather stout, flattened below, and gently domed above. The test has primary spines and tubercles; secondary spines are absent in the genus (Tortonese, 1965). The spines are moderate to long in length, often showing size and shape pattern differences with reference to body regions. In particular, those nearest to the mouth have enameled flattened tips. On the aboral side, there are usually conspicuous naked areas in the upper portions of the interambulacra. A large, more or less soft and membranous peristome, with an undulating edge characterizes the genus. The peristome may be naked, but it usually has small spines and pedicellariae and contains embedded plates that support the buccal podia. -
Klaipėda University
KLAIPĖDA UNIVERSITY ALEKSEJ ŠAŠKOV APPLICATION OF UNDERWATER REMOTE IMAGERY AND ACOUSTIC DATA FOR QUANTITATIVE BENTHIC BIOTOPES IDENTIFICATION, PREDICTIVE MAPPING AND BUILDING OF EXPLANATORY MODELS Doctoral dissertation Biomedical sciences, ecology and environmental sciences (03B) Klaipėda, 2014 Dissertation prepared in 2009–2014 in Klaipėda University. Supervisor: prof. habil. dr. Sergej Olenin (Klaipėda University; Biomedical Sciences, Ecology and Environmental Sciences – 03B). The dissertation will be defended at the Research Board for ecology and environmental sciences: Chairman: prof. dr. Albertas Bitinas (Klaipėda University, physical science, geology, 05P). Members: dr. Anastasija Zaiko (Klaipėda University, biomedical sciences, ecology and environmental sciences, 03B); dr. Juris Aigars (Latvian Water Ecology Institute, biomedical sciences, ecology and environmental sciences, 03B); dr. Ali Ertürk (Stambul University, biomedical sciences, ecology and environmental sciences, 03B); prof. dr. Vitalij Denisov (Klaipėda University, technological science, informatics ingineering, 07T). Opponents: habil. dr. Maria Włodarska-Kowalczuk (Oceanology Institute of Poland Academy of Science, biomedical sciences, Ecology and environmental Sciences, 03B); dr. Linas Ložys (Nature Research Centre, biomedical sciences, ecology and environmental sciences, 03B). The defence of dissertation will take place on 26th of November 2014, at 2 p.m., at the Klaipėda University Aula Magna Conference room. Address: Herkaus Manto 84, LT-92294, Klaipėda, Lithuania