1 1 Evaluating Potential Artifacts of Tethering Techniques to Estimate Predation on Sea Urchins
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Uranium Uptake in Paracentrotus Lividus Sea Urchin, Accumulation
Uranium Uptake in Paracentrotus lividus Sea Urchin, Accumulation and Speciation Benjamin Reeves, Maria Rosa Beccia, Pier Lorenzo Solari, Danil Smiles, David Shuh, Catherine Berthomieu, Didier Marcellin, Nicolas Bremond, Luisa Mangialajo, Sophie Pagnotta, et al. To cite this version: Benjamin Reeves, Maria Rosa Beccia, Pier Lorenzo Solari, Danil Smiles, David Shuh, et al.. Uranium Uptake in Paracentrotus lividus Sea Urchin, Accumulation and Speciation. Environmental Science and Technology, American Chemical Society, 2019, 53 (14), pp.7974-7983. 10.1021/acs.est.8b06380. hal-02196756 HAL Id: hal-02196756 https://hal.archives-ouvertes.fr/hal-02196756 Submitted on 12 Feb 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Environmental Science & Technology This document is confidential and is proprietary to the American Chemical Society and its authors. Do not copy or disclose without written permission. If you have received this item in error, notify the sender and delete all copies. Uranium uptake in Paracentrotus lividus sea urchin, accumulation and speciation Journal: Environmental Science & Technology Manuscript ID es-2018-06380c.R1 Manuscript Type: Article Date Submitted by the 10-May-2019 Author: Complete List of Authors: Reeves, Benjamin; Universite Cote d'Azur, ICN Beccia, Maria Rosa; Universite Cote d'Azur, Institut de Chimie de Nice Solari, Pier Lorenzo; Synchrotron Soleil, Smiles, Danil; Chemical Sciences Division, Glenn T. -
The Department of Marine Biology Alumni Newsletter Keeping in Touch with the Marine Biology Department After You Graduate
The Department of Marine Biology Alumni newsletter Keeping in touch with the Marine Biology Department after you graduate H. Nativ July 2020 Dear students and alumni, We had an exceptionally interesting and challenging academic year. We have started the year with a new faculty member, Dr. Tal Luzzatto Knaan, an expert in marine metabolomics, who studies microbial chemical communication in the sea. Our international MSc program was opened and currently our department has grown to about 60 MSc and PhD students from all over the world. Special greeting to our recently graduated students and to our three fresh PhDs: Dr. Maya Britstein, who has joined a start-up company (see below), Dr. Yotam Popovich, who has been very busy in disinfection and prevention of the Covid-19 pandemic in the last few month and Dr. Sophi Marmen, who continued to postdoctoral research. As in previous years, this past fall we had another wonderful academic get-together that included excellent talks and posters. It was a great joy for me to be part of such an event, providing a unique opportunity to get to know the new students and to learn more about each other in an informal setting. The 7th Haifa Conference on the Mediterranean Sea Research “Food from the Sea – Towards 2050 and beyond” took place in January, headed by Prof. Muki Shpigel, Prof. Ariel Diamant and Dr. Amir Neori, who have joined our Department as Research Fellows. Spring 2020 was a very unique semester, as we had to navigate through the challenges of the COVID-19 pandemic. This has been a challenge for everyone involved, students, faculty and staff. -
Pdf Underwater Routes
UNDERWATER ROUTES of the western Algarve CONTENTS CREDITS COORDINATION: Jorge M. S. INTRODUCTION 3 Gonçalves e Mafalda Rangel TEXT: Mafalda Rangel DIVING IN THE ROUTES 5 RESEARCH TEAM: Mafalda Rangel, Luís Bentes, Pedro MAP OF THE NETWORK OF UNDERWATER ROUTES 8 Monteiro, Carlos M. L. Afonso, Frederico Oliveira, Inês Sousa, SCUBA DIVING ROUTES 10 Karim Erzini, Jorge M. S. Gonçalves (CCMAR – Centre of GRUTA DO MARTINHAL (SAGRES) 10 Marine Sciences) PHOTOGRAPHY: Carlos M. L. PONTA DOS CAMINHOS (SAGRES) 12 Afonso, David Abecasis, Frederico Oliveira, João Encarnação/ “POÇO” (ARMAÇÃO DE PERA) 14 Subnauta (p.7), Jorge M. S. Gonçalves, Nuno Alves (p.19), SNORKELING ROUTES 16 Pedro Veiga ILUSTRATION_ Underwater P. 2 PRAIA DA MARINHA (LAGOA) 16 slates: Frederico Oliveira GRAPHIC DESIGN AND PRAIA DOS ARRIFES (ALBUFEIRA) 18 ILUSTRATION: GOBIUS Comunication and Science PHOTOS 20 COLABORATION: Isidoro Costa ADB COORDINATION: José CURIOSITIES 25 Moura Bastos TRANSLATION: Mafalda DANGERS 26 Rangel, Fátima Noronha CONTACTS: INTEREST FOR CONSERVATION 26 _CCMAR - Centro de Ciências do Mar do Algarve: Universidade do READING SUGGESTIONS 27 Algarve, Campus de Gambelas, FCT Ed7, 8005-139 Faro Telf. 289 800 051 http://www.ccmar.ualg.pt HOW TO QUOTE THIS PUBLICATION: _ADB - Agência Desenvolvimento Rangel, M.; Oliveira, F.; Bentes, L.; Monteiro, P.; Afonso, C.M.L.; do Barlavento, Rua Impasse à Rua Sousa, I.; Erzini, K.; Gonçalves, J.M.S.. 2015. Underwater Routes Poeta António Aleixo, Bloco B, GENTES D’MAR of the windward Algarve. Centre of Marine Sciences (CCMAR), R/c, 8500-525 Portimão, Portugal Algarve University; Agência Desenvolvimento do Barlavento Telf. 282 482 889 (ADB). GOBIUS Communication and Science, 27p. -
The Effects of Multiple Predators on the Size Structure of Red Urchin Populations in British Columbia
The Effects Of Multiple Predators On the Size Structure of Red Urchin Populations in British Columbia An undergraduate Directed Studies (BISC 498) research project by Christine Stevenson Introduction Predator-prey body size relationships influence trophic structure, transfer efficiency, and interaction strength within a food web (Jonsson and Ebenman 1998). Size distributions of both predators and prey are an important component to the population dynamics of a community. Knowledge of the strength of predatory interactions within a food web can provide insight to the relationships between the sizes of prey and their predators. Predators are generally larger than the size their prey and predator size is often positively correlated to prey size (Vezina 1985, Warren and Lawton 1987, Cohen et al. 1993). The relative body size of a predator and its prey largely contribute to the ecology and evolutionary consequences of predator-prey relationships. This is most defined in systems involving size- dependent predators. These predators are effective agents of selection among prey species that differ in body size or growth rate. Size dependent predators therefore influence the structure of prey populations by diminishing prey species of a preferred size (Kerfoot and Peterson 1980). Prey species that can reach a large size through embellishments of the exoskeleton can often attain a size refuge from predators (Sousa 1992). Thus, the risk of predation may be lower for larger prey compared to smaller individuals. The risk of an individual prey being consumed may also depend on the size- structure of the predator population, as larger predators generally have the ability to handle and consume larger prey (Sousa 1992). -
Die Zwei Erstaunlichsten Farben Der Weltgeschichte
Meine Homepage: • Herzlich willkommen! www.rogerliebi.ch • Veranstaltungskalender • Skripte zum Downloaden • Shop: Kassetten, Bücher • etc. Vorträge: • Herzlich willkommen! www.sermon-online.de • “Roger Liebi” • Gratisdownload von über 300 Vortragsfiles und Skripte Hans Hillewaert CC-BY-SA 4.0 Einführung ins Thema Die Entdeckung des blauen und des roten Purpur führte zu einer revolutionären Veränderung des Welthandels in der Antike. Farben, die teurer sind als Gold, sollten von da an die sozialen Unterschiede in der Gesellschaft augenfällig markieren. Gott wählte diese Farben jedoch für andere Zwecke: Sie sollten die Stiftshütte und den Tempel in Jerusalem schmücken und auf die Herrlichkeit des kommenden Messias hinweisen. Zudem sollten alle Israeliten an ihren Kleidern blauen Purpur tragen, ohne Klassen-Unterschiede. Das Geheimnis der Purpurherstellung ging in den vergangenen Jahrhunderten jedoch verloren, indem die einstigen Produzenten ihr Geheimnis mit ins Grab nahmen - … bis es in der Neuzeit auf verschlungenen und dramatischen Wegen wieder gelüftet wurde, rechtzeitig für die Vorbereitung des Dritten Tempels. Erfindung: in Kreta, um 1750 v. Chr. NASA / FB Hexaplex trunculus (Murex trunculus) H. Krisp CC-BY 3.0 mit Sonnenstrahlung blauer Purpur ohne Sonnenstrahlung roter Purpur Petil Tekhelet GNU 1.2 or later 1kg gefärbte Wolle > 20`000 Purpurschnecken Hans Hillewaert CC-BY-SA 4.0 Paul Friedländer Grössenordnung: 1g > 10`000 Purpurschnecken Kanold CC-BY 3.0 1kg gefärbte Wolle > 20`000 Purpurschnecken Olegvolk CC-BY 2.5 Paul Friedländer: 1g > 10`000 Purpurschnecken Kanold CC-BY 3.0 Tyrus: Welthandelsmacht Nr. 1 • Produktion • Handel • Kanaaniter im Libanon: „Phönizier“ = „Purpurleute“ NASA Hes 26 - 28 Tyrus: Welthandelsmacht Nr. 1 Zeichen des Unterschieds zwischen den Reichen und den Armen: blauer und roter Purpur Hes 26 - 28 NASA Phönizisches Schiff auf einem Sakrophag Elie plus GNU 1.2 or later Das Kleid der ganz Reichen Auf den Tel-el-Amarna-Tafeln (Korrespondenz zwischen Mittlerem Osten und Ägypten, 14. -
Spawning of Gametes in Paracentrotus Lividus
Spawning of gametes in Paracentrotus lividus 1. Randomly select 4-5 adult animals (sex determination in P. lividus is not possible by visual inspection; only after the spawning female and male will be Paola Cirino, Alfonso Toscano easily distinguished by gametes: eggs are yellow-orange, sperm are white) Stazione Zoologica Anton Dohrn, It. Animals: Adult sea urchins collected from 2. Apply one of the following stimulus in order to induce the spawning (the 3 natural population. methods (a – c) are progressively more invasive and can be applied successively Apparatus: filtered seawater 0,22µ, or alternatively, according to the quantity of gametes needed). various size glass beakers, Pasteur pipets a) Shaking: shake vigorously animals wrapping them in common and pipet bulbs , Petri dishes, eppendorf paper. Place the animals with the oral side down on a Petri dish. Wait for a tubes, syringes (2 – 5 ml) and needles. few minutes and check the spawning of gametes from the aboral surface. An electrical device (9 – 12 V): two b) Electrical shock: place the urchin with the oral side down on a Petri dish metallic paddles with insulated handles with a thin layer of sea water just lapping the animal. Apply the paddle to (electrodes) connected to a battery. the opposite sides of animal near the gonopore and give an electrical Chemicals: potassium chloride (KCl) 0,5M discharge lasting a few seconds. Repeat this electrical shock for 3 – 4 times. in distilled water. Wait for a few minutes and check the spawning of gametes from the Parameters: T 20 °C aboral surface. c) Intracoelomic injection : place the urchin with the oral side up. -
The Role of Trophic Interactions Between Fishes, Sea Urchins and Algae in the Northwest Mediterranean Rocky Infralittoral
The role of trophic interactions between fishes, sea urchins and algae in the northwest Mediterranean rocky infralittoral Bernat Hereu Fina Departament d’Ecologia Universitat de Barcelona 2004 Tesi Doctoral Universitat de Barcelona Facultat de Biologia – Departament d’Ecologia The role of trophic interactions between fishes, sea urchins and algae in the northwestern Mediterranean rocky infralittoral Memòria presentada per Bernat Hereu Fina per a optar al títol de Doctor en Biologia al Departament d’Ecologia, de la Universitat de Barcelona, sota la direcció dels doctors Mikel Zabala Limousin i Enric Sala Gamito Bernat Hereu Fina Barcelona, Febrer de 2004 El director de la Tesi El director de la Tesi Dr. Mikel Zabala Limousin Dr. Enric Sala Gamito Professor titular Assistant professor Facultat de Biologia Scripps Institution Oceanography Universitat de Barcelona University of California Contents Contents....................................................................................................................................................3 Chapter 1- General introduction..............................................................................................................1 The theoretical framework: trophic models.............................................................................................4 Trophic cascades: evidence of “top-down” control................................................................................6 Trophic cascades in marine systems........................................................................................................7 -
Sibling Bald Sea Urchin Disease Affecting the Edible [I
Sibling Bald Sea Urchin Disease affecting the edible Paracentrotus lividus (Echinodermata: Echinoidea) in Sardinia (Italy) Grech, D., Guala, I., Farina, S. IMC - International Marine Centre - Loc. Sa Mardini, Torregrande, 09170 Oristano, Italy Corresponding Author: Daniele Grech Email address: [email protected] Different species of echinoids and bivalves are suffering infectious diseases as the effect of ocean warming. In Sardinia (Western Mediterranean Sea) the keystone sea urchin species Paracentrotus lividus (Lamarck 1816) is widely appreciated as edible resource. Recently, a number of individuals were found to be infected by a no specified bacterial morphologically matching to a “bald sea urchin disease” (Fig. 1). In February 2019, a sampling campaign took place in two locations in the West and East Coast, inside and in proximity of local Marine Protected Areas. Field samplings were approved by the Regione Autonoma Sardegna (Fishing License for scientific purposes n.310/AP SCIE/N.1 10/01/2019). Samplings were carried out at the end of February 2019, when water temperature was 13°C. For each sampled site we performed two replicates of fast 50 m belt transects to estimate the infection rate as the total individuals infected on the total counted. The estimated infection rate was around 5% in both of sampled locations. A higher level of preyed sea urchins was observed, compared to natural predatory level previously observed in all the surveyed sites. Moreover, an unusual amount of dead sea urchins has been observed stranded on the storm berm, neighbouring one of the sampled sites. Microbiological analysis puts in evidence bacterial infection as the potential causal agent that could be temperature-related. -
Protein and Energy Digestibility and Gonad Development of the European Sea Urchin Paracentrotus Lividus (Lamarck) Fed Algal and Prepared Diets During Spring and Fall
UC Davis UC Davis Previously Published Works Title Protein and energy digestibility and gonad development of the European sea urchin Paracentrotus lividus (Lamarck) fed algal and prepared diets during spring and fall Permalink https://escholarship.org/uc/item/2q5151zv Journal Aquaculture Research, 36 Author Schlosser, Susan Publication Date 2005 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Aquaculture Research, 2005, 36, 972^982 doi:10.1111/j.1365-2109.2005.01306.x Protein and energy digestibility and gonad development of the European sea urchin Paracentrotus lividus (Lamarck) fed algal and prepared diets during spring and fall Susan C Schlosser1, Ingrid Lupatsch2, John M Lawrence3, Addison L Lawrence4 & Muki Shpigel2 1California Sea Grant Extension Program, Eureka, CA, USA 2National Center for Mariculture, Israel Oceanographic and Limnological Research, Eilat, Israel 3Department of Biology,University of South Florida,Tampa, FL, USA 4Texas A&M Shrimp Mariculture Project, Port Aransas,TX, USA Correspondence: S C Schlosser, California Sea Grant Extension Program, 2 Commercial St., Ste. 4, Eureka, CA 95501, USA. E-mail: [email protected] Abstract from the higher dietary energy content of the pre- pared diet. Protein and energy are two of the main limiting fac- tors for sea urchin growth. However, the requirement Key words: Paracentrotus lividus, sea urchin, of daily protein and energy to maximize gonadal pro- gonad, protein, energy,diet duction is still unknown. Paracentrotus lividus were fed three experimental diets: Ulva lactuca, Gracilaria conferta and a prepared diet for 2 months in the fall of 1999 and spring of 2000. Sea urchins from a Introduction laboratory-cultured population of equal age, weight and test diameter were used. -
Richesses Naturelles Richesses Large Des Pyrénées-Orientales Et De L’Aude
Créé le 11 octobre 2011, le Parc naturel marin du golfe 2 du Lion couvre plus de 4 000 km d’espace marin au Richesses naturelles Richesses large des Pyrénées-Orientales et de l’Aude. C’est le troisième parc naturel marin de France et le premier de naturelles Méditerranée. parc naturel marin du golfe du Lion Le Parc naturel marin est une aire marine protégée répondant à trois objectifs : la connaissance, la protection La mer & l’homme Richesses naturelles du milieu marin et le développement durable des activités La mer & l’homme maritimes. Le Parc naturel marin du golfe du Lion est géré par un parc naturel marin du golfe du Lion conseil de gestion qui réunit l’ensemble des acteurs locaux. Culture Culture et patrimoine Pour mener à bien ses actions, le Parc bénéfi cie de moyens maritimes & patrimoine humains, fi nanciers et techniques mis à disposition par l’Agence des aires marines protégées, un établissement maritimes parc naturel marin du golfe du Lion public national dédié à la protection du milieu marin. du golfe du Lion » « Richesses naturelles Richesses Parc naturel marin du golfe du Lion Passage du vieux port 66 660 Port-Vendres www.parc-marin-golfe-lion.fr « Richesses du golfe du Lion » •« Richesses parc naturel marin du golfe du Lion Espace d’équilibre et d’excès, d’histoire et de modernité mais, aussi, pays de mer, de plaines et de montagnes, le territoire maritime qui s’étend Ouvrage imprimé en février 2014 à partir du document réalisé dans le cadre des contreforts des Pyrénées aux marches du de l’enquête publique pour la création du Parc naturel marin du golfe du Lion Languedoc est remarquable. -
Recovery Trends of Commercial Fish: the Case of an Underperforming Mediterranean Marine Protected Area
RESEARCH ARTICLE Recovery Trends of Commercial Fish: The Case of an Underperforming Mediterranean Marine Protected Area Stefano Marra1,2*, Stefania Coppa1, Andrea Camedda1, Carlotta Mazzoldi3, Francesco Wrachien4, Giorgio Massaro4, G. Andrea de Lucia1 1 Institute for Coastal Marine Environment-National Research Council (IAMC-CNR), Oristano, Italy, 2 Department of Ecology and Biology, University of Tuscia, Viterbo, Italy, 3 Department of Biology, University of Padua, Padua, Italy, 4 Marine Protected Area “Penisola del Sinis-Isola di Mal di Ventre”, Cabras, Italy * [email protected] Abstract Temporal trends in the recovery of exploited species in marine protected areas (MPAs) are useful for a proper assessment of the efficacy of protection measures. The effects of protec- OPEN ACCESS tion on the fish assemblages of the sublittoral rocky reefs in the “Penisola del Sinis-Isola di Citation: Marra S, Coppa S, Camedda A, Mazzoldi Mal di Ventre” MPA (W. Sardinia, Italy) were evaluated using a multi-year series of data. C, Wrachien F, Massaro G, et al. (2016) Recovery Trends of Commercial Fish: The Case of an Four surveys, conducted 7, 10, 13 and 15 years after the area was designated as an MPA Underperforming Mediterranean Marine Protected and carried out in the period spanning June and July, were used to estimate the abundance Area. PLoS ONE 11(1): e0146391. doi:10.1371/ and biomass of commercial species. The surveys were carried out in zones with decreasing journal.pone.0146391 levels of fishing restrictions within the MPA (zones A, B, C) and in unprotected zones Editor: George Tserpes, Hellenic Centre for Marine (OUT1 and OUT2), and underwater video visual census techniques were used. -
Sea Urchin <I>(Paracentrotus Lividus)
CryoLetters 35 (6), 482-494 (2014) © CryoLetters, [email protected] SEA URCHIN (PARACENTROTUS LIVIDUS) CRYOPRESERVED EMBRYOS SURVIVAL AND GROWTH: EFFECTS OF CRYOPRESERVATION PARAMETERS AND REPRODUCTIVE SEASONALITY E. Paredes1* and J. Bellas2 1Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Estrada Colexio Universitario s/n, 36310 Vigo, Galicia, Spain. 2Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, Cabo Estai – Canido, 36200 Vigo, Galicia, Spain *Corresponding author email: [email protected] Abstract BACKGROUND: The cryopreservation of embryos can be a powerful biotechnological tool to supply all year-round biological material for sea urchin aquaculture production. This study investigates different methodological and biological factors that may affect the result of the cryopreservation process of sea urchin (Paracentrotus lividus) embryos. Our data indicate that neither embryo density nor the use of different cryopreservation containers presented effect on the cryopreservation outcome. Contrary to other marine invertebrates, for sea urchin embryo cryopreservation ultrapure water cannot be used as CPA solvent, yielding zero survival. After studying the reproductive parameters along the reproductive season, we found a positive correlation between both male and female Condition Index (C.I.), and between the oocyte weight and C.I. Both the histology study of female gonads and the C.I. variation, suggest that the sea urchin natural spawning period in the Ría de Vigo occurs between June and July.