DOCSLIB.ORG

Downloaded from Brill.Com10/10/2021 09:45:57PM Via Free Access 228 - J

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Downloaded from Brill.Com10/10/2021 09:45:57PM Via Free Access 228 - J Bijdragen tot de Dierkunde, 58 (2): 227-258 — 1988 Medusae of the Amsterdam Mid North Atlantic Plankton Expeditions (1980-1983) with description of two new species by J. Bleeker & S. van der Spoel Institute of Taxonomic Zoology (Zoologisch Museum), University of Amsterdam, P.O. Box 4766, 1009 AT Amsterdam, The Netherlands Abstract of the The present paper gives an account Medusae collected these in The medusa fauna of the mid North Atlantic Ocean by expeditions between 24° and 55° N along approximately 30° W is spring (1980), summer (1983) autumn (1981) studied. Two Oceania the Hydromedusae new to science, and winter (1982); data already published and Annatiara are described. The dif- tydemani lempersi , mentioned. attention is are briefly Special given ferences in fauna south and north of 42° N, and faunal to vertical distribution and faunal borders. borders near 50°, 48°, 45°, 35°, 30°, and 34°-37° N are illustrated Some of the species are because discussed. The vertical distribution and for some species earlier are the diurnal migration and subtropical submergence are published figures frequently be recorded. diagrammatic. In some cases pictures could prepared from colour photographs of living Résumé which show specimens the normal, not con- dimensions of the La faune de Méduses de l’Océan Atlantique Nord central tracted, organism; e.g. fine (entre 24° et 55° N; approximativement 30°O) est Chromatonema rubrum (figs. 20, 21) gives a étudiée. Deux nouvelles la science Hydromedusae pour of the effect of fixation and example preser- sont décrites: Oceania tydemani et Annatiara lempersi. On vation. discute les différences nord sud de faunistiques au et au ainsi les limites trouvées 42° N, que faunistiques au voisinage de 50°, 48°, 45°, 35°, 30°, et de 34° à 37° N. MATERIAL AND METHODS Est mentionnée la distribution verticale certaines et, pour la diurne et la submersion sub- espèces, migration The material studied has been collected during four tropicale. expeditions between 55 °N and 24° N along approximately 30°W in the North Atlantic Ocean (fig. 1) during four in the 1980 1981 seasons years (9/IV-6/V), (14/IX-14/X), INTRODUCTION 1982 (1/II-27/II) and 1983 (27/V-24/VI). During these four cruises, stations were sampled as much as possible at but the winter Winkler (1982) described the Hydromedusae comparable geographic localities, during cruise in 1982 this was impossible due to bad weather con- collected in spring during the Amsterdam Mid be ditions preventing part of the transect to sampled. North Atlantic Plankton Expedition in 1980. Sampling was executed with the RMT 1+8, a com- Winkler Van Soest recorded & (1981) Deepstaria the bined rectangular midwater trawl developed at I.O.S. from the cruise and Van der enigmatica same (Baker et al., 1973; Roe et al, 1980) in depth layers of listed Coronata of the 50 100 and 500 m thick between Spoel (1987a) some approximately m, m, 0 and 100 100 and 500 and 500 and respectively m Amsterdam Mid North Atlantic Plankton m, m, deeper. The mesh sizes of the nets were 0.32 mm and 4.5 collected in the 1980-1983. Expeditions period the and mm so that only relatively large species specimens were collected. For full data on stations and environmen- tal conditions one is referred to Van der Spoel (1981, * Amsterdam Mid North Atlantic Plankton and Van der Expeditions 1985) Spoel & Meerding (1983). Temper- 101A. and salinities in this all values for the (AMNAPE), Project Report no. 36, supported by tures given paper are of the Netherlands of Education and of the a grant Ministry average depth samples. Sciences. (Report no. 35 appeared in Bulletin Zoologisch Some species show remarkable differences in vertical but did Museum, Universiteit van Amsterdam, 11 (18): 149-152 distribution at day- and nighttime, most not. As (1988).) still some vertical shifts with the time are expected, where Downloaded from Brill.com10/10/2021 09:45:57PM via free access 228 - J. BLEEKER & S. VAN DER SPOEL NORTH ATLANTIC MEDUSAE RESULTS Of the total of 72823 specimens 232 could not be identified due to damage. The number of specimens ( = spm) collected are given between parentheses. Class SCYPHOMEDUSAE (1) Deepstaria enigmatica Russell, 1967 (1 spm) collected in from 510-1090 was spring a m haul at 24°52'N 29°59'W (Winkler & Van Soest, 1981). Order CORONATA Family NAUSITHOIDAE Nausithoe 1913 (2) atlantica Broch, (4 spm) was found in the spring, summer and winter cruise between 55°-30°N at depths between 0 and 1010 m, temperature range 4.5- 17.4°C (fig. 2). (3) Nausithoe spec. (1 spm) was found during the summer cruise between 0-50 m, at 40°54'N. 1853 (4) Nausithoe punctata Kölliker, (fig. 3) (8 spm) was found in a sample at 39°59'N in spring between 420 and 510 m depth and two in winter at 30°N between 40 and 505 13.3-19.2°C. m. Temperature range Family ATOLLIDAE 1880 (5) Atolla wyvillei Haeckel, (171 spm) is a bathypelagic species found along the entire cruise transect (Van der Spoel, 1987a). The temperature and salinity ranges are 3- 11.5°C and 34.42-36.2l%o, respectively. With Atolla likewise parva, a bathypelagic with cruise indica- Fig. 1. Investigated area transect and species, it shares the maximum abundance tion ofthe of for diamonds position stations; squares 1980, at between 8° and 11°C. for 1981, ovals for 1982 and circles for 1983. temperatures (6) Atolla vanhoeffeni Russell, 1957 (304 spm) is a deep mesopelagic species living less deep than the other relatives but two showing no shallow occurrence at like vertical as of total catch high latitudes, possible distribution percentages for the and der per depth stratum, population at daytime at Periphylla periphylla (cf. Van Spoel, night, is calculated for each species for all stations and it 1987a). The temperature and salinity is recorded when an evident of the population percentage 4-14.5°C and ranges are 34.42-36.21%o, certain level between crosses a depth day and night. The shows respectively. temperature curve The material studied is preserved in the Institute of two maxima for between Taxonomic Zoology (Zoologisch Museum), University of abundance, one Amsterdam (ZMA). 8° and 11°C and one between 12° and Downloaded from Brill.com10/10/2021 09:45:57PM via free access - 229 BIJDRAGEN TOT DE DIERKUNDE, 58 (2) 1988 54°20'N and 35°08'N at depths from 90 to 300 and 100 1750 m at daytime to m at night. The temperature and salinity ranges 3.5-14.3°C and are 35.01-36.12% 0 , respectively. Family PERIPHYLLIDAE (9) Periphylla periphylla (Péron & Lesueur, 1809) found in all (1004 spm) was seasons along the entire transect of the cruises as a mesopelagic species living also at shallow depth north of 42°N (Van der Spoel, The and 1987a). temperature salinity and are 3.4-19.8°C 34.39-36.43% 0 ranges , This is not respectively. temperature range reflecting real temperature preferences as the majority of the specimens is collected at between 4° and 11°C. It is temperatures 2. Naus ithoe cf. atlantica from station 65 trawl 13. that this cold- Fig. spec. notable, however, deep- or is water species tolerating temperatures up to 19.8°C. Order SEMAEOSTOMEAE Family PELAGIIDAE (10) Pelagia noctiluca (Forskàl, 1775) (fig. 4) (1739 spm) was not found in spring but in in while occurs high numbers autumn, regularly specimens were collected in sum- Nausithoe from Fig. 3. punctata station 68 trawl 1. 14°C. This is characteristic as the two other Atolla species do not show maxima in temperature preference. Atolla 1958 is (7) parva Russell, (214 spm) a bathypelagic species found along the entire cruise transect (Van der Spoel, 1987a). The and 3-13°C temperature salinity ranges are and 34.42-36.21°/oo, respectively. Family PARAPHYLLINIDAE ransoni Russell, 1936 noctiluca from station 81 trawl (8) Paraphyllina (64 spm) Fig. 4. Pelagia 6, a young in between was only found summer specimen. Downloaded from Brill.com10/10/2021 09:45:57PM via free access 230 J. BLEEKER & S. VAN DER SPOEL - NORTH ATLANTIC MEDUSAE Oceania mer and winter. It is an epipelagic species (15) tydemani n. sp. (fig. 7) (1 spm) was with its highest abundance in autumn found in autumn at 34°11.4'N, between and 300 Vertical 60-100 of 18.7°C. between 200 m. migra- m at a temperature tion is not evident. This typically in temperate species lives autumn between 51° N and 24°N, in summer between 45°N and 32°N and in winter between 40°N and The and 30°N. temperature 6.5-19.4°C salinity ranges are and 34.40- 36.43%o, respectively. Class SIPHONOPHORA Fig. 5. Cytaeis tetrastyla from station 66 trawl 9. (11) Porpita porpita (Linnaeus, 1758) (3 spm) found in between was only autumn 34°55'N and in 27°10'N a night sample in the 50 and in upper m a day sample from 460 The and to 870 m. temperature 10.3-22.9°C and 35.59- salinity ranges are 36.97%o, respectively. (12) Velella velella (Linnaeus, 1758) (5 spm) was rarely found, and as young specimens between 375 only, in spring and 500 m at far north and in daytime as as 45°02'N autumn in night samples between 0 and 350 m depth at 45°01'N at 30°08'N. The is 11.9-15.4°C. temperature range Class HYDROZOA Fig. 6. Oceania armata (after colour photograph) from sta- tion 83 trawl 9.
Load more

Recommended publications
  • Diversity and Community Structure of Pelagic Cnidarians in the Celebes and Sulu Seas, Southeast Asian Tropical Marginal Seas
    Deep-Sea Research I 100 (2015) 54–63 Contents lists available at ScienceDirect Deep-Sea Research I journal homepage: www.elsevier.com/locate/dsri Diversity and community structure of pelagic cnidarians in the Celebes and Sulu Seas, southeast Asian tropical marginal seas Mary M. Grossmann a,n, Jun Nishikawa b, Dhugal J. Lindsay c a Okinawa Institute of Science and Technology Graduate University (OIST), Tancha 1919-1, Onna-son, Okinawa 904-0495, Japan b Tokai University, 3-20-1, Orido, Shimizu, Shizuoka 424-8610, Japan c Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka 237-0061, Japan article info abstract Article history: The Sulu Sea is a semi-isolated, marginal basin surrounded by high sills that greatly reduce water inflow Received 13 September 2014 at mesopelagic depths. For this reason, the entire water column below 400 m is stable and homogeneous Received in revised form with respect to salinity (ca. 34.00) and temperature (ca. 10 1C). The neighbouring Celebes Sea is more 19 January 2015 open, and highly influenced by Pacific waters at comparable depths. The abundance, diversity, and Accepted 1 February 2015 community structure of pelagic cnidarians was investigated in both seas in February 2000. Cnidarian Available online 19 February 2015 abundance was similar in both sampling locations, but species diversity was lower in the Sulu Sea, Keywords: especially at mesopelagic depths. At the surface, the cnidarian community was similar in both Tropical marginal seas, but, at depth, community structure was dependent first on sampling location Marginal sea and then on depth within each Sea. Cnidarians showed different patterns of dominance at the two Sill sampling locations, with Sulu Sea communities often dominated by species that are rare elsewhere in Pelagic cnidarians fi Community structure the Indo-Paci c.
    [Show full text]
  • Leptomedusae: Eirenidae)
    Fluorescence distribution pattern allows to distinguish two Title species of Eugymnanthea (Leptomedusae: Eirenidae) Author(s) Kubota, Shin; Pagliara, Patrizia; Gravili, Cinzia Journal of the Marine Biological Association of the United Citation Kingdom (2008), 88(8): 1743-1746 Issue Date 2008-12-18 URL http://hdl.handle.net/2433/187919 Right © Marine Biological Association of the United Kingdom 2008 Type Journal Article Textversion publisher Kyoto University Journal of the Marine Biological Association of the United Kingdom, 2008, 88(8), 1743–1746. #2008 Marine Biological Association of the United Kingdom doi:10.1017/S0025315408002580 Printed in the United Kingdom Fluorescence distribution pattern allows to distinguish two species of Eugymnanthea (Leptomedusae: Eirenidae) shin kubota1, patrizia pagliara2 and cinzia gravili2 1Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University, Shirahama, Nishimuro, Wakayama 649-2211, Japan, 2Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Via per Monteroni 73100 Lecce, Italy The auto-fluorescence patterns of the medusae observed under a fluorescent microscope with blue light excitation allows to distinguish two species of Eugymnanthea, this even when they are still attached to the hydroid as small medusa buds despite the occurrence of a sex-dependant pattern in E. japonica. A total of four distribution patterns of green fluorescence, including non-fluorescence, could be found. Three of them are found in E. japonica, called ‘subumbrellar fluorescence type’ except for non-fluorescence, while another type is found in E. inquilina, called ‘umbrellar margin fluorescence type’. During the short life of the medusa the latter type remained invariable for up to six days in E.
    [Show full text]
  • A Case Study with the Monospecific Genus Aegina
    MARINE BIOLOGY RESEARCH, 2017 https://doi.org/10.1080/17451000.2016.1268261 ORIGINAL ARTICLE The perils of online biogeographic databases: a case study with the ‘monospecific’ genus Aegina (Cnidaria, Hydrozoa, Narcomedusae) Dhugal John Lindsaya,b, Mary Matilda Grossmannc, Bastian Bentlaged,e, Allen Gilbert Collinsd, Ryo Minemizuf, Russell Ross Hopcroftg, Hiroshi Miyakeb, Mitsuko Hidaka-Umetsua,b and Jun Nishikawah aEnvironmental Impact Assessment Research Group, Research and Development Center for Submarine Resources, Japan Agency for Marine- Earth Science and Technology (JAMSTEC), Yokosuka, Japan; bLaboratory of Aquatic Ecology, School of Marine Bioscience, Kitasato University, Sagamihara, Japan; cMarine Biophysics Unit, Okinawa Institute of Science and Technology (OIST), Onna, Japan; dDepartment of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA; eMarine Laboratory, University of Guam, Mangilao, USA; fRyo Minemizu Photo Office, Shimizu, Japan; gInstitute of Marine Science, University of Alaska Fairbanks, Alaska, USA; hDepartment of Marine Biology, Tokai University, Shizuoka, Japan ABSTRACT ARTICLE HISTORY Online biogeographic databases are increasingly being used as data sources for scientific papers Received 23 May 2016 and reports, for example, to characterize global patterns and predictors of marine biodiversity and Accepted 28 November 2016 to identify areas of ecological significance in the open oceans and deep seas. However, the utility RESPONSIBLE EDITOR of such databases is entirely dependent on the quality of the data they contain. We present a case Stefania Puce study that evaluated online biogeographic information available for a hydrozoan narcomedusan jellyfish, Aegina citrea. This medusa is considered one of the easiest to identify because it is one of KEYWORDS very few species with only four large tentacles protruding from midway up the exumbrella and it Biogeography databases; is the only recognized species in its genus.
    [Show full text]
  • Midwater Data Sheet
    MIDWATER TRAWL DATA SHEET RESEARCH VESSEL__________________________________(1/20/2013Version*) CLASS__________________;DATE_____________;NAME:_________________________; DEVICE DETAILS___________ LOCATION (OVERBOARD): LAT_______________________; LONG___________________________ LOCATION (AT DEPTH): LAT_______________________; LONG______________________________ LOCATION (START UP): LAT_______________________; LONG______________________________ LOCATION (ONBOARD): LAT_______________________; LONG______________________________ BOTTOM DEPTH_________; DEPTH OF SAMPLE:____________; DURATION OF TRAWL___________; TIME: IN_________AT DEPTH________START UP__________SURFACE_________ SHIP SPEED__________; WEATHER__________________; SEA STATE_________________; AIR TEMP______________ SURFACE TEMP__________; PHYS. OCE. NOTES______________________; NOTES_____________________________ INVERTEBRATES Lensia hostile_______________________ PHYLUM RADIOLARIA Lensia havock______________________ Family Tuscaroridae “Round yellow ones”___ Family Hippopodiidae Vogtia sp.___________________________ PHYLUM CTENOPHORA Family Prayidae Subfamily Nectopyramidinae Class Nuda "Pointed siphonophores"________________ Order Beroida Nectadamas sp._______________________ Family Beroidae Nectopyramis sp.______________________ Beroe abyssicola_____________________ Family Prayidae Beroe forskalii________________________ Subfamily Prayinae Beroe cucumis _______________________ Craseoa lathetica_____________________ Class Tentaculata Desmophyes annectens_________________ Subclass
    [Show full text]
  • CNIDARIA Corals, Medusae, Hydroids, Myxozoans
    FOUR Phylum CNIDARIA corals, medusae, hydroids, myxozoans STEPHEN D. CAIRNS, LISA-ANN GERSHWIN, FRED J. BROOK, PHILIP PUGH, ELLIOT W. Dawson, OscaR OcaÑA V., WILLEM VERvooRT, GARY WILLIAMS, JEANETTE E. Watson, DENNIS M. OPREsko, PETER SCHUCHERT, P. MICHAEL HINE, DENNIS P. GORDON, HAMISH J. CAMPBELL, ANTHONY J. WRIGHT, JUAN A. SÁNCHEZ, DAPHNE G. FAUTIN his ancient phylum of mostly marine organisms is best known for its contribution to geomorphological features, forming thousands of square Tkilometres of coral reefs in warm tropical waters. Their fossil remains contribute to some limestones. Cnidarians are also significant components of the plankton, where large medusae – popularly called jellyfish – and colonial forms like Portuguese man-of-war and stringy siphonophores prey on other organisms including small fish. Some of these species are justly feared by humans for their stings, which in some cases can be fatal. Certainly, most New Zealanders will have encountered cnidarians when rambling along beaches and fossicking in rock pools where sea anemones and diminutive bushy hydroids abound. In New Zealand’s fiords and in deeper water on seamounts, black corals and branching gorgonians can form veritable trees five metres high or more. In contrast, inland inhabitants of continental landmasses who have never, or rarely, seen an ocean or visited a seashore can hardly be impressed with the Cnidaria as a phylum – freshwater cnidarians are relatively few, restricted to tiny hydras, the branching hydroid Cordylophora, and rare medusae. Worldwide, there are about 10,000 described species, with perhaps half as many again undescribed. All cnidarians have nettle cells known as nematocysts (or cnidae – from the Greek, knide, a nettle), extraordinarily complex structures that are effectively invaginated coiled tubes within a cell.
    [Show full text]
  • An Annotated Checklist of the Marine Macroinvertebrates of Alaska David T
    NOAA Professional Paper NMFS 19 An annotated checklist of the marine macroinvertebrates of Alaska David T. Drumm • Katherine P. Maslenikov Robert Van Syoc • James W. Orr • Robert R. Lauth Duane E. Stevenson • Theodore W. Pietsch November 2016 U.S. Department of Commerce NOAA Professional Penny Pritzker Secretary of Commerce National Oceanic Papers NMFS and Atmospheric Administration Kathryn D. Sullivan Scientific Editor* Administrator Richard Langton National Marine National Marine Fisheries Service Fisheries Service Northeast Fisheries Science Center Maine Field Station Eileen Sobeck 17 Godfrey Drive, Suite 1 Assistant Administrator Orono, Maine 04473 for Fisheries Associate Editor Kathryn Dennis National Marine Fisheries Service Office of Science and Technology Economics and Social Analysis Division 1845 Wasp Blvd., Bldg. 178 Honolulu, Hawaii 96818 Managing Editor Shelley Arenas National Marine Fisheries Service Scientific Publications Office 7600 Sand Point Way NE Seattle, Washington 98115 Editorial Committee Ann C. Matarese National Marine Fisheries Service James W. Orr National Marine Fisheries Service The NOAA Professional Paper NMFS (ISSN 1931-4590) series is pub- lished by the Scientific Publications Of- *Bruce Mundy (PIFSC) was Scientific Editor during the fice, National Marine Fisheries Service, scientific editing and preparation of this report. NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. The Secretary of Commerce has The NOAA Professional Paper NMFS series carries peer-reviewed, lengthy original determined that the publication of research reports, taxonomic keys, species synopses, flora and fauna studies, and data- this series is necessary in the transac- intensive reports on investigations in fishery science, engineering, and economics. tion of the public business required by law of this Department.
    [Show full text]
  • Biogeography of Jellyfish in the North Atlantic, by Traditional and Genomic Methods
    Earth Syst. Sci. Data, 7, 173–191, 2015 www.earth-syst-sci-data.net/7/173/2015/ doi:10.5194/essd-7-173-2015 © Author(s) 2015. CC Attribution 3.0 License. Biogeography of jellyfish in the North Atlantic, by traditional and genomic methods P. Licandro1, M. Blackett1,2, A. Fischer1, A. Hosia3,4, J. Kennedy5, R. R. Kirby6, K. Raab7,8, R. Stern1, and P. Tranter1 1Sir Alister Hardy Foundation for Ocean Science (SAHFOS), The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK 2School of Ocean and Earth Science, National Oceanography Centre, University of Southampton, European Way, Southampton SO14 3ZH, UK 3University Museum of Bergen, Department of Natural History, University of Bergen, P.O. Box 7800, 5020 Bergen, Norway 4Institute of Marine Research, P.O. Box 1870, 5817 Nordnes, Bergen, Norway 5Department of Environment, Fisheries and Sealing Division, Box 1000 Station 1390, Iqaluit, Nunavut, XOA OHO, Canada 6Marine Institute, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK 7Institute for Marine Resources and Ecosystem Studies (IMARES), P.O. Box 68, 1970 AB Ijmuiden, the Netherlands 8Wageningen University and Research Centre, P.O. Box 9101, 6700 HB Wageningen, the Netherlands Correspondence to: P. Licandro ([email protected]) Received: 26 February 2014 – Published in Earth Syst. Sci. Data Discuss.: 5 November 2014 Revised: 30 April 2015 – Accepted: 14 May 2015 – Published: 15 July 2015 Abstract. Scientific debate on whether or not the recent increase in reports of jellyfish outbreaks represents a true rise in their abundance has outlined a lack of reliable records of Cnidaria and Ctenophora. Here we describe different jellyfish data sets produced within the EU programme EURO-BASIN.
    [Show full text]
  • Chec List Marine and Coastal Biodiversity of Oaxaca, Mexico
    Check List 9(2): 329–390, 2013 © 2013 Check List and Authors Chec List ISSN 1809-127X (available at www.checklist.org.br) Journal of species lists and distribution ǡ PECIES * S ǤǦ ǡÀ ÀǦǡ Ǧ ǡ OF ×±×Ǧ±ǡ ÀǦǡ Ǧ ǡ ISTS María Torres-Huerta, Alberto Montoya-Márquez and Norma A. Barrientos-Luján L ǡ ǡǡǡǤͶ͹ǡ͹ͲͻͲʹǡǡ ǡ ȗ ǤǦǣ[email protected] ćĘęėĆĈęǣ ϐ Ǣ ǡǡ ϐǤǡ ǤǣͳȌ ǢʹȌ Ǥͳͻͺ ǯϐ ʹǡͳͷ͹ ǡͳͷ ȋǡȌǤǡϐ ǡ Ǥǡϐ Ǣ ǡʹͶʹȋͳͳǤʹΨȌ ǡ groups (annelids, crustaceans and mollusks) represent about 44.0% (949 species) of all species recorded, while the ͹͸ʹ ȋ͵ͷǤ͵ΨȌǤǡ not yet been recorded on the Oaxaca coast, including some platyhelminthes, rotifers, nematodes, oligochaetes, sipunculids, echiurans, tardigrades, pycnogonids, some crustaceans, brachiopods, chaetognaths, ascidians and cephalochordates. The ϐϐǢ Ǥ ēęėĔĉĚĈęĎĔē Madrigal and Andreu-Sánchez 2010; Jarquín-González The state of Oaxaca in southern Mexico (Figure 1) is and García-Madrigal 2010), mollusks (Rodríguez-Palacios known to harbor the highest continental faunistic and et al. 1988; Holguín-Quiñones and González-Pedraza ϐ ȋ Ǧ± et al. 1989; de León-Herrera 2000; Ramírez-González and ʹͲͲͶȌǤ Ǧ Barrientos-Luján 2007; Zamorano et al. 2008, 2010; Ríos- ǡ Jara et al. 2009; Reyes-Gómez et al. 2010), echinoderms (Benítez-Villalobos 2001; Zamorano et al. 2006; Benítez- ϐ Villalobos et alǤʹͲͲͺȌǡϐȋͳͻ͹ͻǢǦ Ǥ ǡ 1982; Tapia-García et alǤ ͳͻͻͷǢ ͳͻͻͺǢ Ǧ ϐ (cf. García-Mendoza et al. 2004). ǡ ǡ studies among taxonomic groups are not homogeneous: longer than others. Some of the main taxonomic groups ȋ ÀʹͲͲʹǢǦʹͲͲ͵ǢǦet al.
    [Show full text]
  • Fisheries Centre Research Reports 2011 Volume 19 Number 6
    ISSN 1198-6727 Fisheries Centre Research Reports 2011 Volume 19 Number 6 TOO PRECIOUS TO DRILL: THE MARINE BIODIVERSITY OF BELIZE Fisheries Centre, University of British Columbia, Canada TOO PRECIOUS TO DRILL: THE MARINE BIODIVERSITY OF BELIZE edited by Maria Lourdes D. Palomares and Daniel Pauly Fisheries Centre Research Reports 19(6) 175 pages © published 2011 by The Fisheries Centre, University of British Columbia 2202 Main Mall Vancouver, B.C., Canada, V6T 1Z4 ISSN 1198-6727 Fisheries Centre Research Reports 19(6) 2011 TOO PRECIOUS TO DRILL: THE MARINE BIODIVERSITY OF BELIZE edited by Maria Lourdes D. Palomares and Daniel Pauly CONTENTS PAGE DIRECTOR‘S FOREWORD 1 EDITOR‘S PREFACE 2 INTRODUCTION 3 Offshore oil vs 3E‘s (Environment, Economy and Employment) 3 Frank Gordon Kirkwood and Audrey Matura-Shepherd The Belize Barrier Reef: a World Heritage Site 8 Janet Gibson BIODIVERSITY 14 Threats to coastal dolphins from oil exploration, drilling and spills off the coast of Belize 14 Ellen Hines The fate of manatees in Belize 19 Nicole Auil Gomez Status and distribution of seabirds in Belize: threats and conservation opportunities 25 H. Lee Jones and Philip Balderamos Potential threats of marine oil drilling for the seabirds of Belize 34 Michelle Paleczny The elasmobranchs of Glover‘s Reef Marine Reserve and other sites in northern and central Belize 38 Demian Chapman, Elizabeth Babcock, Debra Abercrombie, Mark Bond and Ellen Pikitch Snapper and grouper assemblages of Belize: potential impacts from oil drilling 43 William Heyman Endemic marine fishes of Belize: evidence of isolation in a unique ecological region 48 Phillip Lobel and Lisa K.
    [Show full text]
  • (Gulf Watch Alaska) Final Report the Seward Line: Marine Ecosystem
    Exxon Valdez Oil Spill Long-Term Monitoring Program (Gulf Watch Alaska) Final Report The Seward Line: Marine Ecosystem monitoring in the Northern Gulf of Alaska Exxon Valdez Oil Spill Trustee Council Project 16120114-J Final Report Russell R Hopcroft Seth Danielson Institute of Marine Science University of Alaska Fairbanks 905 N. Koyukuk Dr. Fairbanks, AK 99775-7220 Suzanne Strom Shannon Point Marine Center Western Washington University 1900 Shannon Point Road, Anacortes, WA 98221 Kathy Kuletz U.S. Fish and Wildlife Service 1011 East Tudor Road Anchorage, AK 99503 July 2018 The Exxon Valdez Oil Spill Trustee Council administers all programs and activities free from discrimination based on race, color, national origin, age, sex, religion, marital status, pregnancy, parenthood, or disability. The Council administers all programs and activities in compliance with Title VI of the Civil Rights Act of 1964, Section 504 of the Rehabilitation Act of 1973, Title II of the Americans with Disabilities Action of 1990, the Age Discrimination Act of 1975, and Title IX of the Education Amendments of 1972. If you believe you have been discriminated against in any program, activity, or facility, or if you desire further information, please write to: EVOS Trustee Council, 4230 University Dr., Ste. 220, Anchorage, Alaska 99508-4650, or [email protected], or O.E.O., U.S. Department of the Interior, Washington, D.C. 20240. Exxon Valdez Oil Spill Long-Term Monitoring Program (Gulf Watch Alaska) Final Report The Seward Line: Marine Ecosystem monitoring in the Northern Gulf of Alaska Exxon Valdez Oil Spill Trustee Council Project 16120114-J Final Report Russell R Hopcroft Seth L.
    [Show full text]
  • Capacity for Development of Secondary Manubria in Eutonina Indicans Medusae (Hydrozoa)I
    Pacific Science (1974), Vol. 28, No.4, p. 375-376 Printed in Great Britain Capacity for Development of Secondary Manubria in Eutonina indicans Medusae (Hydrozoa)I CLAY SASSAMAN2 THIS NOTE reports the occurrence of two indi­ viduals of the hydromedusa Eutonina indicans (Romanes) that developed secondary manubria while being maintained in the laboratory following field collection. The first incidence of secondary manubrium formation occurred in one of 24 medusae collected in Monterey Bay, California, on 5 July 1972. After 1 week in the laboratory at 16°_17° C the bell turned inside out (in much the manner of Obelia medusae) and the circular canal and tentacular ring degenerated. Several days later additional manubria appeared. A very comparable se­ quence of events in a specimen of Gonionemus vertens Agassiz has been reported by Hargitt (1899). Following surgical removal of the bell margin the bell evaginated and"At one time, just about the completion of union of the inverted margins, a decided papilla-like bud appeared at the aboral area which presented some resemblance to a second manubrium, but this soon after was absorbed entirely, and was probably only the elevation due to the approxi­ mation of the margins preparatory to final union" (Hargitt 1899: 44). In the Eutonina medusa the papillalike bud at the aboral area developed into a secondary manubrium. In addition, four other secondary manubria de­ veloped along three ofthe radial canals (Fig. 1a). They were all generally cylindrical in shape, lacking the fluted folding characteristic of the original manubrium and were all capable of feeding on brine shrimp nauplii.
    [Show full text]
  • First Record of Eutonina Indicans (Romanes, 1876) from Kerala Waters, India
    Indian Journal of Geo Marine Sciences Vol. 47 (08), August 2018, pp. 1636-1639 First record of Eutonina indicans (Romanes, 1876) from Kerala waters, India Sam Peter1, B. Manojkumar2 & Devika Pillai*1 1School of Aquaculture and Biotechnology, Kerala University of Fisheries and Ocean Studies, Panangad, Cochin, 682506, Kerala, India 2School of Fisheries Resource Management and Harvest Technology, Kerala University of Fisheries and Ocean Studies, Panangad, Cochin, 682506, Kerala, India *[E-Mail: [email protected]; [email protected]; [email protected]] Received 04 July 2017; revised 10 August 2017 The occurrence of Eutonina indicans (Romanes, 1876) a hydrozoan gelatinous zooplankton, was recorded for the first time, in the Varapuzha backwaters of Cochin (Kerala) where it has been discovered inhabiting surface waters. Inventorying zooplanktonic diversity and distribution is significant as they form the basis of the pelagic food web. Based on monthly sampling in March 2017, two species of gelatinous zooplankton viz., Eutonina indicans and Acromitus flagellatus were listed in the monitoring stations in the backwaters of Cochin. A brief description of the newly identified species along with ecological remarks is presented. [Keywords: Gelatinous Zooplankton, Hydromedusae, Eirenidae, Eutonina indicans, Backwaters, Kerala] Introduction reviewed the hydrozoans from Maharashtra coast and The Hydromedusae, a subclass within the Class reported the occurrence of Eutonina indicans in Hydrozoa of Phylum Cnidaria, include a mystifying Mumbai suburban11. However, there was little to variety of mostly small, often inconspicuous nothing published about this species from the state of medusae1. Life histories of hydrozoan species can Kerala. vary from those that are dominated by the polyp to Since hydrozoan medusae prey on a variety of that which are exclusively medusoid2.
    [Show full text]