Contribution to the Anatomical Study of Asteroids: a Translation of Contribution À L’Ètude Anatomique Des Astèrides
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Fine Structure of the Podia in Three Species of Paxillosid Asteroids of the Genus Lu/Dia (Echinodermata)
Belg. J. Zool. - Volume 125 (1995) - issue 1 - pages 125-134 - Brussels 1995 FINE STRUCTURE OF THE PODIA IN THREE SPECIES OF PAXILLOSID ASTEROIDS OF THE GENUS LU/DIA (ECHINODERMATA) by PATRICK FLAMMANG * La boratoire de Biologie Marine, Université de Mons-Hainaut, 19 av. Maistriau, B-7000 Mons, Belgium SUMMARY lndividuals of the paxillosid asteroid genus Luidia use their podia in locomotion a nd burrowing. Each podium in the three considered species consists of a stem wi tb a pointed knob at its tip. The knob consists of four tissue layers that are, from the inside to the outside, a mesothelium, a connective ti ss ue layer, a nerve plexus, and an epidermis. The latter is made up of four cell categories : secretory cells, neurosecretory cells, non-secretory cili ated cell s, and support cells. The epidermal cells of the podial knob are presumabl y fun ctioning as a duo gland adhesive system in which adhesive secretions would be produced by secretory cell s wh ile de-adhesion, on the other band, would be due to neurosecretory cell secretions. Although the podia of the three considered species of Luidia share numerous simjlarities, there are nevertheless severa! important morphological differences between, on the one band, the podia of L. ciliaris and L. maculata, and, on the other band, the podia of L. penangensis. These dif ferences stress that carefulness is required when ge n e r a lj zat ion ~, drawn from the morphology of a single species, are applied to related species havin g the sa me ]jfe style ; but also that the gem1s Luidia needs to be re-exa mined from a taxonomjc p-o int of view. -
DEEP SEA LEBANON RESULTS of the 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project
DEEP SEA LEBANON RESULTS OF THE 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project March 2018 DEEP SEA LEBANON RESULTS OF THE 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project Citation: Aguilar, R., García, S., Perry, A.L., Alvarez, H., Blanco, J., Bitar, G. 2018. 2016 Deep-sea Lebanon Expedition: Exploring Submarine Canyons. Oceana, Madrid. 94 p. DOI: 10.31230/osf.io/34cb9 Based on an official request from Lebanon’s Ministry of Environment back in 2013, Oceana has planned and carried out an expedition to survey Lebanese deep-sea canyons and escarpments. Cover: Cerianthus membranaceus © OCEANA All photos are © OCEANA Index 06 Introduction 11 Methods 16 Results 44 Areas 12 Rov surveys 16 Habitat types 44 Tarablus/Batroun 14 Infaunal surveys 16 Coralligenous habitat 44 Jounieh 14 Oceanographic and rhodolith/maërl 45 St. George beds measurements 46 Beirut 19 Sandy bottoms 15 Data analyses 46 Sayniq 15 Collaborations 20 Sandy-muddy bottoms 20 Rocky bottoms 22 Canyon heads 22 Bathyal muds 24 Species 27 Fishes 29 Crustaceans 30 Echinoderms 31 Cnidarians 36 Sponges 38 Molluscs 40 Bryozoans 40 Brachiopods 42 Tunicates 42 Annelids 42 Foraminifera 42 Algae | Deep sea Lebanon OCEANA 47 Human 50 Discussion and 68 Annex 1 85 Annex 2 impacts conclusions 68 Table A1. List of 85 Methodology for 47 Marine litter 51 Main expedition species identified assesing relative 49 Fisheries findings 84 Table A2. List conservation interest of 49 Other observations 52 Key community of threatened types and their species identified survey areas ecological importanc 84 Figure A1. -
Marlin Marine Information Network Information on the Species and Habitats Around the Coasts and Sea of the British Isles
MarLIN Marine Information Network Information on the species and habitats around the coasts and sea of the British Isles Ophiothrix fragilis and/or Ophiocomina nigra brittlestar beds on sublittoral mixed sediment MarLIN – Marine Life Information Network Marine Evidence–based Sensitivity Assessment (MarESA) Review Eliane De-Bastos & Jacqueline Hill 2016-01-28 A report from: The Marine Life Information Network, Marine Biological Association of the United Kingdom. Please note. This MarESA report is a dated version of the online review. Please refer to the website for the most up-to-date version [https://www.marlin.ac.uk/habitats/detail/1068]. All terms and the MarESA methodology are outlined on the website (https://www.marlin.ac.uk) This review can be cited as: De-Bastos, E.S.R. & Hill, J., 2016. [Ophiothrix fragilis] and/or [Ophiocomina nigra] brittlestar beds on sublittoral mixed sediment. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. DOI https://dx.doi.org/10.17031/marlinhab.1068.1 The information (TEXT ONLY) provided by the Marine Life Information Network (MarLIN) is licensed under a Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales License. Note that images and other media featured on this page are each governed by their own terms and conditions and they may or may not be available for reuse. Permissions beyond the scope of this license are available here. -
The Echinoderm Fauna of Turkey with New Records from the Levantine Coast of Turkey
Proc. of middle East & North Africa Conf. For Future of Animal Wealth THE ECHINODERM FAUNA OF TURKEY WITH NEW RECORDS FROM THE LEVANTINE COAST OF TURKEY Elif Özgür1, Bayram Öztürk2 and F. Saadet Karakulak2 1Faculty of Fisheries, Akdeniz University, TR-07058 Antalya, Turkey 2İstanbul University, Faculty of Fisheries, Ordu Cad.No.200, 34470 Laleli- Istanbul, Turkey Corresponding author e-mail: [email protected] ABSTRACT The echinoderm fauna of Turkey consists of 80 species (two Crinoidea, 22 Asteroidea, 18 Ophiuroidea, 20 Echinoidea and 18 Holothuroidea). In this study, seven echinoderm species are reported for the first time from the Levantine coast of Turkey. These are, five ophiroid species; Amphipholis squamata, Amphiura chiajei, Amphiura filiformis, Ophiopsila aranea, and Ophiothrix quinquemaculata and two echinoid species; Echinocyamus pusillus and Stylocidaris affinis. Turkey is surrounded by four seas with different hydrographical characteristics and Turkish Straits System (Çanakkale Strait, Marmara Sea and İstanbul Strait) serve both as a biological corridor and barrier between the Aegean and Black Seas. The number of echinoderm species in the coasts of Turkey also varies due to the different biotic environments of these seas. There are 14 echinoderm species reported from the Black Sea, 19 species from the İstanbul Strait, 51 from the Marmara Sea, 71 from the Aegean Sea and 42 from the Levantine coasts of Turkey. Among these species, Asterias rubens, Ophiactis savignyi, Diadema setosum, and Synaptula reciprocans are alien species for the Turkish coasts. Key words: Echinodermata, new records, Levantine Sea, Turkey. Cairo International Covention Center , Egypt , 16 - 18 – October , (2008), pp. 571 - 581 Elif Özgür et al. -
Deep-Sea Life Issue 14, January 2020 Cruise News E/V Nautilus Telepresence Exploration of the U.S
Deep-Sea Life Issue 14, January 2020 Welcome to the 14th edition of Deep-Sea Life (a little later than anticipated… such is life). As always there is bound to be something in here for everyone. Illustrated by stunning photography throughout, learn about the deep-water canyons of Lebanon, remote Pacific Island seamounts, deep coral habitats of the Caribbean Sea, Gulf of Mexico, Southeast USA and the North Atlantic (with good, bad and ugly news), first trials of BioCam 3D imaging technology (very clever stuff), new deep pelagic and benthic discoveries from the Bahamas, high-risk explorations under ice in the Arctic (with a spot of astrobiology thrown in), deep-sea fauna sensitivity assessments happening in the UK and a new photo ID guide for mesopelagic fish. Read about new projects to study unexplored areas of the Mid-Atlantic Ridge and Azores Plateau, plans to develop a water-column exploration programme, and assessment of effects of ice shelf collapse on faunal assemblages in the Antarctic. You may also be interested in ongoing projects to address and respond to governance issues and marine conservation. It’s all here folks! There are also reports from past meetings and workshops related to deep seabed mining, deep-water corals, deep-water sharks and rays and information about upcoming events in 2020. Glance over the many interesting new papers for 2019 you may have missed, the scientist profiles, job and publishing opportunities and the wanted section – please help your colleagues if you can. There are brief updates from the Deep- Ocean Stewardship Initiative and for the deep-sea ecologists amongst you, do browse the Deep-Sea Biology Society president’s letter. -
The Marine Fauna of Lundy Ecidnodermata
Rep. Lundy Fld Soc. 29 (1978) THE MARINE FAUNA OF LUNDY ECIDNODERMATA P. A. TYLER Department of Oceanography, University College, Swansea, S. Wales, U.K. INTRODUCTION The five classes of echinoderms are a conspicuous element of the fauna in truly marine areas. The British echinoderm fauna has been treated in detail by Mortensen (1927). In shelf sea areas they are usually found below LWN tide level with occasional species moving up into the littoral zone. Examples of the dominant extant groups are found in all types of substrates, the ophiuroids and the heart urchins being particularly important in the determination of soft substrate benthic communities (Thorson, 1947). SOURCES OF MATERIAL The collections made by divers during marine surveys of Lundy have pro duced a considerable record particularly of the conspicuous epifaunal asteroids, regular echinoids and holothurians. Observations of the less conspicuous in faunal ophiuroids and irregular echinoids have been obtained by divers and by benthic surveys using R.V. 'Ocean Crest'. THE LUNDY FAUNA- GENERAL CONSIDERATIONS To date, 24 species of echinoderm have been recorded around Lundy. Of these species only 8 were recorded by Harvey (1950, 1951) at Lundy. The most noteable exceptions to the fauna are Acrocnida brachiata and Spatangus purpureus, both of which have been found further up the Bristol Channel and may be supposed to be found round Lundy where a suitable substrate exists for these infaunal species. A number of species appear to be common all round the island. These include Asterias rubens, Marthasterias glacia/is, Luidia ciliaris, Echinus esculentus and Holothuria forskali. The very rare sea cucumber Lepto synapta decaria has been reported as occurring round Lundy (Hoare & Wilson, 1976). -
Radioactive Contamination in Marine Environment and Biota in the Basin
REPORT NO. IAPA-n-421-P *ÏVe TITLE Radioactive contamination in marine environment and biota in the tasin of the Mediterranean Sea (part of a coordinated programme of research in marine radioactivity studies) FINAL REPORT FOR THE PERIOD 1 December 1966 - 2(J February 1971 AUTHOR(S) E. Gilat N.H.Steiper-Shafrir Í INSTITUTE Technion - Israel Institute of Technology Department of Nuclear Science Haifa, Israel INTERNATIONAL ATOMIC ENERGY AGENCY Í DATE December 1971 V;: rv-.sr-y-;-: í • i,-¿..£.: "Ijj TNSD4/42S -^ Israel" Institute of Technology Department of Nuclear Science RADIOACTIVE CONTAMINATION IN MARINE ENVIRONMENT < AND BIOTA IN THE EASTERN BASIN OF THE MEDITERRANEAN SEA FINAL REPORT i • '•. ;-, - j ;'• • - .^ ;'•J ' ' T' • ;¿;,_>-.^.?u: N. H. Steiger-Shafrlr ^*/! - * l V = - ; v • '' ; / - .j - ' \ '•: - '"•?" ' „•o -í.; • ° S \ -t" -, - Í * 4; :' £ .', • TNSD-R/423 Sea Fisheries Research Station, Department of Nuclear Science, Ministry of Agriculture* TECHNION-Israel Institute of Technology* RADIOACTIVE CONTAMINATION IN MARINE ENVIRONMENT AND BIOTA IN THE EASTERN BASIN OF THE MEDITERRANEAN SEA FINAL REPORT E. Gilat* and N.H. Steiger-Shafrir** The research was partially supported by the International Atomic Energy Agency, Vienna, under Research Contract No. 421/RB. Haifa, Israel, November 1971 ' "« \ Acknowledgements The authors wish to acknowledge the participation of the following staff meihbers in the studies carried out under Research Contract No. 421/RB. Mrs. Manuela Wulf Radiochemical Separations Mrs. Jeanette Kamil Radiochemical Separations Mrs. Pauline Chin Radiochemical Separations Mrs. Rachel Tillinger Accumulation Experiments Mrs. Rachel Fischler Ecological Studies Mr. Steven R. Lewis Gamma Spectrometry Mr. Gideon Sachnin Ecological Studies Contents 1. Introduction 2. Ecological Study 2.1 Environmental Conditions 2.1.1 Granulometric Analysis of Sediments 2.2 Distribution of Marine Organisms 3. -
Marine News Issue 15 Photo
MARINE NEWS GLOBAL MARINE AND POLAR PROGRAMME ISSUE 15 June 2020 CLIMATE CHANGE Financing nature- based solutions PLASTIC OCEANS Tackling a 21st Century scourge PLUS news on IUCN’s other marine, coastal and polar activities from around the globe MARINE NEWS In this Issue... Editorial Issue 15 - June 2020 Humanity’s relationship and cultural heritage with the ocean 1 Editorial by Minna Epps is deeply anchored - from the air that we breathe to the food that we eat to the planet we live on - it is our life support system. It distributes heat from the equator to the poles, plays 2 Focus on the Sweden-IUCN a crucial role in the carbon cycle and climate regulation, and IUCN Global Marine partnership carries 90% of the world’s traded goods. Our ocean economy and Polar Programme is worth trillions; we urgently need to protect our assets Rue Mauverney 28 sustainably for future generations. In return, healthy and 1196 Gland, Switzerland 4 GMPP 2017-2020 Programme resilient marine and coastal ecosystems will protect us. Tel +4122 999 0217 update But the pressure on marine biodiversity is on. The exploitation www.iucn.org/marine of living marine resources and threats to marine ecosystems 6 Global Coasts have never been higher. We are faced with cumulative © MSC Edited by David Coates, Anna Tuson, impacts, which are amplified by climate change. The double Save our Mangroves Now, Blue crisis of climate change impacts (ocean warming, ocean areas beyond national jurisdiction, through a future-proofed James Oliver & Anthony Hobson acidification and ocean deoxygenation - the deadly trio) and Natural Capital, Blue Forests, Blue internationally legally binding agreement under UNCLOS, while biodiversity loss have already caused long-term negative Solutions, MPA & Islands (Corsica), ensuring that existing treaties and conventions are ratified and Layout by Imre Sebestyén impacts on people and biodiversity. -
An Approach to the Ecological Significance of Chemically Mediated Bioactivity in Mediterranean Benthic Communities
MARINE ECOLOGY PROGRESS SERIES Vol. 70: 175-188, 1991 Published February 28 Mar. Ecol. Prog. Ser. An approach to the ecological significance of chemically mediated bioactivity in Mediterranean benthic communities Centre d'Estudis Avanqats de Blanes (C.S.I.C.), Caml de Santa Bhrbara s/n, E-17300Blanes (Girona),Spain Roswell Park Cancer Institute, 666 Elm Street, Buffalo, New York 14263,USA 3Pharma Mar S.A.. Calle de la Calera sln, Tres Cantos, Madrid, Spain ABSTRACT: Possible ecological roles of antibacterial, antifungal, antiviral, cytotoxic and antimitotic activities found in western Mediterranean benthos were investigated, and relationships were sought between these activities and taxonomic groups, presence of fouling organisms, and community struc- ture. Cytotoxic and antimitotic activities are the most abundant, and are widespread in almost all the taxonomic groups studied. Porifera. Bryozoa and Tunicata contain the most biologically achve chemi- cals. Cytotoxic molecules are more frequently present in tunicates than in bryozoans. There is a close association between antirnitotic and cytotoxic, as well as between antibacterial and antifungal. activities. As antifouling defences, cytotoxic and antimitotic activities seem to be less effective than antibacterial and antifungal ones; the latter appear to function in a generalist antifouling mode. Chemically rich species are much more abundant in sciaphilic/cryptic habitats than in photophilic ones. INTRODUCTION lation between toxicity and latitude, while McCLintock (1987) subsequently found a higher percentage of The production of biologically active substances in active species in the Antarctic region than at lower benthic organisms has traditionally been related to latitudes. Some authors have reported that the number various aspects of their biology (Stoecker 1978, 1980, of active species is higher in cryptic environments than Bergquist 1979, Castiello et al. -
Growth and Reproductive Biology of the Sea Star Astropecten Aranciacus
Baeta et al. Helgol Mar Res _#####################_ DOI 10.1186/s10152-016-0453-z Helgoland Marine Research ORIGINAL ARTICLE Open Access Growth and reproductive biology of the sea star Astropecten aranciacus (Echinodermata, Asteroidea) on the continental shelf of the Catalan Sea (northwestern Mediterranean) Marc Baeta1,2*, Eve Galimany1,3 and Montserrat Ramón1,3 Abstract The growth and reproductive biology of the sea star Astropecten aranciacus was investigated on the continental shelf of the northwestern Mediterranean Sea. Sea stars were captured monthly in two bathymetric ranges (5–30 and 50–150 m) between November 2009 and October 2012. Bathymetric segregation by size in A. aranciacus was detected: small individuals inhabit shallow areas (5–30 m), while large individuals inhabit deeper areas of the conti‑ nental shelf (50–150 m). Recruitment was recorded twice nearshore but no recruitment was detected offshore during the whole study period. Three cohorts were identified in each bathymetric range and growth rates were estimated. A. aranciacus population exhibited a seasonal growth pattern, being higher from June to October in the nearshore cohorts and from February to October in the offshore ones. Histology and organ indices revealed that spawning likely started in March, coinciding with the spring phytoplankton bloom and the increase in sea water temperature, and extended until June–July. Ratio between males and females was approximately 1:1 throughout the year and in both bathymetrical ranges. The size at first maturity (R50 %) was estimated to be R 112 mm. A. aranciacus did not show an inverse relationship between gonad index and pyloric caeca index. = Keywords: Asteroidea, Starfish, Mediterranean and echinoderm Background Astropecten (Fam. -
Skomer Marine Conservation Zone Project Status Report 2015 M
Skomer Marine Conservation Zone Project Status Report 2015 M. Burton, K. Lock, P. Newman & J. Jones 2016 NRW Evidence Report No. 148 Synopsis The fifteenthproject status report produced by the Skomer Marine Conservation Zone summarises the progress and status of monitoring projects in the Skomer MCZ in 2015. A summary of all established projects in the MCZ is provided in a table format. For each project that was worked on in the 2015 field season a detailed account is given including a history and summary of the results so far. This report also includes summaries of the oceanographic and meteorological surveillance projects. Title: M. Burton, K. Lock, P. Newman & J. Jones. (2016). Skomer Marine Conservation Zone Project Status Report 2015. NRW Evidence Report No. 148. Crynodeb Mae’r pymthegfed adroddiad ar ddeg ar statws prosiectau a gynhyrchwyd gan Barth Cadwraeth Morol Sgomer yn crynhoi cynnydd a statws prosiectau monitro ym Mharth Cadwraeth Morol Sgomer yn 2015. Mae crynodeb o’r holl brosiectau sefydledig yn y Parth Cadwraeth Morol ar gael ar ffurf tabl. Ar gyfer pob prosiect y gweithiwyd arno yn nhymor maes 2015 ceir adroddiad manwl, gan gynnwys hanes a chrynodeb o’r canlyniadau hyd yn hyn. Mae’r adroddiad hwn hefyd yn cynnwys crynodebau o brosiectau gwyliadwriaeth eigionegol a meteorolegol. Teitl: M. Burton, K. Lock, P. Newman & J. Jones. (2016). Adroddiad ar Statws Prosiectau Parth Cadwraeth Morol Sgomer 2015. Adroddiad Tystiolaeth CNC Rhif 148. Contents Synopsis ....................................................................................................................... -
Antimicrobial Activity of the Sea Star (Astropecten Spinulosus) Collected from the Egyptian Mediterranean Sea, Alexandria
Egyptian Journal of Aquatic Biology & Fisheries Zoology Department, Faculty of Science, Ain Shams University, Cairo, Egypt. ISSN 1110 – 6131 Vol. 24(2): 507 – 523 (2020) www.ejabf.journals.ekb.eg Antimicrobial activity of the sea star (Astropecten spinulosus) collected from the Egyptian Mediterranean Sea, Alexandria Hassan A.H. Ibrahim1*, Mostafa M. Elshaer2, Dalia E. Elatriby2 and Hamdy O. Ahmed3 1Microbiology Department, National Institute of Oceanography and Fisheries, Alexandria, Egypt. 2Microbiology Department, Specialized Medical Hospital, Mansoura University. 3Invertebrates Department, National Institute of Oceanography and Fisheries, Alexandria, Egypt. *Corresponding Author: [email protected] ______________________________________________________________________________________ ARTICLE INFO ABSTRACT Article History: A species of sea star was collected from the Mediterranean Sea, Alexandria, Received: April 8, 2020 Egypt. It was identified based on general morphological and anatomical Accepted: April 28, 2020 features as Astropecten spinulosus. The antibacterial and antifungal Online: April 29, 2020 activities were investigated via the standard techniques. Data obtained _______________ revealed that the inhibition zones as a factor for antibacterial activity of A. spinulosus ranged between 0 and 18 mm. The highest antibacterial activity Keywords: was detected against P. aeruginosa (18 mm) for ethanol extract, followed by Antimicrobial activity, B. subtlis (14 mm) for methanol extract, then by P. aeruginosa (13 mm) for Sea star, both ethyl acetate and methanol extract. Different solvent extracts recorded Astropecten spinulosus, inhibition zones as antifungal activity ranged between 8 to 10 mm. the most Mediterranean Sea, suppressed fungus was P. crustosum by acetone and ethanol extracts as 80 Alexandria. and 90%, respectively. Weakly, A. terreus was suppressed by ethanol and methanol extracts of A. spinulosus as 10 and 20%, respectively.