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A Review of Southern Ocean Squids Using Nets and Beaks
Marine Biodiversity (2020) 50:98 https://doi.org/10.1007/s12526-020-01113-4 REVIEW A review of Southern Ocean squids using nets and beaks Yves Cherel1 Received: 31 May 2020 /Revised: 31 August 2020 /Accepted: 3 September 2020 # Senckenberg Gesellschaft für Naturforschung 2020 Abstract This review presents an innovative approach to investigate the teuthofauna from the Southern Ocean by combining two com- plementary data sets, the literature on cephalopod taxonomy and biogeography, together with predator dietary investigations. Sixty squids were recorded south of the Subtropical Front, including one circumpolar Antarctic (Psychroteuthis glacialis Thiele, 1920), 13 circumpolar Southern Ocean, 20 circumpolar subantarctic, eight regional subantarctic, and 12 occasional subantarctic species. A critical evaluation removed five species from the list, and one species has an unknown taxonomic status. The 42 Southern Ocean squids belong to three large taxonomic units, bathyteuthoids (n = 1 species), myopsids (n =1),andoegopsids (n = 40). A high level of endemism (21 species, 50%, all oegopsids) characterizes the Southern Ocean teuthofauna. Seventeen families of oegopsids are represented, with three dominating families, onychoteuthids (seven species, five endemics), ommastrephids (six species, three endemics), and cranchiids (five species, three endemics). Recent improvements in beak identification and taxonomy allowed making new correspondence between beak and species names, such as Galiteuthis suhmi (Hoyle 1886), Liguriella podophtalma Issel, 1908, and the recently described Taonius notalia Evans, in prep. Gonatus phoebetriae beaks were synonymized with those of Gonatopsis octopedatus Sasaki, 1920, thus increasing significantly the number of records and detailing the circumpolar distribution of this rarely caught Southern Ocean squid. The review extends considerably the number of species, including endemics, recorded from the Southern Ocean, but it also highlights that the corresponding species to two well-described beaks (Moroteuthopsis sp. -
DIET of FREE-RANGING and STRANDED SPERM WHALES (Physeter
DIET OF FREE-RANGING AND STRANDED SPERM WHALES (Physeter macrocephalus) FROM THE GULF OF MEXICO NATIONAL MARINE FISHERIES SERVICE CONTRACT REPORT Submitted to: Dr. Keith D. Mullin National Marine Fisheries Service Southeast Fisheries Science Center PO. Drawer 1207 Pascagoula, MS 39568-1207 Submitted by: Dr. Nelio B. Barros Mote Marine Laboratory Center for Marine Mammal and Sea Turtle Research 1600 Ken Thompson Parkway Sarasota, FL 34236-1096 (941) 388-4441 x 443 (941) 388-4317 FAX May 2003 Mote Marine Laboratory Technical Report Number 895 ABSTRACT Sperm whales are common inhabitants of the deep waters of the Gulf of Mexico. To date, no information is available on the diet of sperm whales in the Gulf. This study sheds light into the feeding habits ofthese whales by examining data collected from free-ranging and stranded animals. Prey species included a minimum of 13 species within 10 families of cephalopods, the only prey type observed. The most important prey was Histioteuthis, a midwater squid important in the diet of sperm whales worldwide. Most species of cephalopods consumed by Gulf sperm whales are meso to bathypelagic in distribution, being found in surface to waters 2,500 deep. Some of these prey are also vertical migrators. The diet of Gulf sperm whales does not include species targeted by the commercial fisheries. INTRODUCTION Until fairly recently, little was known about the species of whales and dolphins (cetaceans) inhabiting the deep waters of the Gulf of Mexico. Most of the information available came from opportunistic sightings and occasional strandings. In the early 1990' s large-scale dedicated surveys were initiated to study the distribution and abundance of marine mammals in the deep Gulf. -
<I>Teuthowenia</I> (Oegopsida)
BULLETIN OF MARINE SCIENCE, 36(1): 1-85, 1985 SYSTEMATICS, BIOLOGY AND BIOGEOGRAPHY OF THE CRANCHIID CEPHALOPOD GENUS TEUTHOWENIA (OEGOPSIDA) Nancy A. Voss ABSTRACT Teuthowenia is comprised of three discrete, closely related, allopatric species. Synonymies, definitions, diagnoses and keys to all developmental stages are presented, along with a review of the complex history of the genus and detailed illustrations. The discrete, ecologically distinct, distributional patterns of the three species reflect the influence ofa number of biological and physical factors. T. megalops (Prosch) is confined to the highly productive Atlantic subarctic and the highly productive areas of the North Atlantic temperate region. T. maculata (Leach) is restricted to the area of year-round, high productivity in the eastern tropical Atlantic. T. pellucida (Chun) is distributed circumglobally in the mixed and fringing waters of the Southern Subtropical Convergence. The species display similar patterns of ontogenetic descent from near-surface waters to midwater depths of about 1,000 m to in excess of 2,500 m where the animals mature, mate and spawn. Teuthowenia species have differentiated physiologically and developmentally as well as morphologically. Variations in the maturity-related morphological features among the species suggest differences in behavioral patterns for courtship and copulation. The genus displays a high rate of evolution in male and female secondary sexual characters. The relationships of Teuthowenia with Egea and Megalocranchia, which together comprise the monophyletic Megalocranchia group, and with the other taoniin genera are discussed. The taxonomic confusion surrounding the cranchiids was resolved in part by the familial revision of N. Voss (1980). The phylogenetic history of the family was reconstructed by N. -
The 1994 Arctic Ocean Section the First Major Scientific Crossing of the Arctic Ocean 1994 Arctic Ocean Section
The 1994 Arctic Ocean Section The First Major Scientific Crossing of the Arctic Ocean 1994 Arctic Ocean Section — Historic Firsts — • First U.S. and Canadian surface ships to reach the North Pole • First surface ship crossing of the Arctic Ocean via the North Pole • First circumnavigation of North America and Greenland by surface ships • Northernmost rendezvous of three surface ships from the largest Arctic nations—Russia, the U.S. and Canada—at 89°41′N, 011°24′E on August 23, 1994 — Significant Scientific Findings — • Uncharted seamount discovered near 85°50′N, 166°00′E • Atlantic layer of the Arctic Ocean found to be 0.5–1°C warmer than prior to 1993 • Large eddy of cold fresh shelf water found centered at 1000 m on the periphery of the Makarov Basin • Sediment observed on the ice from the Chukchi Sea to the North Pole • Biological productivity estimated to be ten times greater than previous estimates • Active microbial community found, indicating that bacteria and protists are significant con- sumers of plant production • Mesozooplankton biomass found to increase with latitude • Benthic macrofauna found to be abundant, with populations higher in the Amerasia Basin than in the Eurasian Basin • Furthest north polar bear on record captured and tagged (84°15′N) • Demonstrated the presence of polar bears and ringed seals across the Arctic Basin • Sources of ice-rafted detritus in seafloor cores traced, suggesting that ocean–ice circulation in the western Canada Basin was toward Fram Strait during glacial intervals, contrary to the present -
Cephalopoda: Cranchiidae) from New Zealand Waters Aaron B
Journal of Natural History, 2015 Vol. 49, Nos. 21–24, 1327–1349, http://dx.doi.org/10.1080/00222933.2013.840747 Ontogeny of the deep-sea cranchiid squid Teuthowenia pellucida (Cephalopoda: Cranchiidae) from New Zealand waters Aaron B. Evans* and Kathrin S.R. Bolstad Earth & Oceanic Sciences Research Institute, Auckland University of Technology, Auckland, New Zealand (Received 14 December 2012; accepted 19 July 2013; first published online 18 February 2014) Teuthowenia pellucida is a cosmopolitan southern sub-tropical species, and is abundantly represented in local New Zealand collections. However, because of the morphological similarities between this and other cranchiid genera at early ontogenetic stages, accurate identification of small specimens can be difficult. Herein, the morphological changes characterizing six pre-adult developmental stages (termed A–F) are reported in detail, as well as adult morphology; new information is provided on fecundity. These findings comprise a small contribution toward eventual resolution of the systematically unstable Cranchiidae. Keywords: Cranchiidae; ontogeny; New Zealand; squid Introduction Teuthowenia is a squid genus of the family Cranchiidae, whose largely transparent tissues have resulted in the common name “glass” squids; their crypsis is also aided by eye photophores (Herring et al. 2002), which counter-shade down-welling light from the surface (Young and Roper 1976; Voss 1985). Cranchiids have been reported from all oceans except the Arctic (Norman and Lu 2000), and are found primarily between the mesopelagic and bathypelagic zones; however, some species, including those of the genus Teuthowenia, migrate vertically within the water column depending on maturity and seasonality (Voss 1985; Moreno et al. 2009). Teuthowenia contains three species (Voss 1980, 1985): Teuthowenia maculata and Teuthowenia megalops are found in the central and northern Atlantic, and Teuthowenia pellucida lives circum-globally in the southern sub-tropical belt (Voss 1985). -
Mastigotragus, a New Generic Name for Mastigoteuthis Pyrodes Young, 1972 (Cephalopoda: Mastigoteuthidae)
European Journal of Taxonomy 105: 1–6 ISSN 2118-9773 http://dx.doi.org/10.5852/ejt.2014.105 www.europeanjournaloftaxonomy.eu 2014 · Young R.E., Vecchione M. & Braid H.E. This work is licensed under a Creative Commons Attribution 3.0 License. Research article urn:lsid:zoobank.org:pub:FCD51F6F-A5D6-4466-ADB6-0ADC9F560F66 Mastigotragus, a new generic name for Mastigoteuthis pyrodes Young, 1972 (Cephalopoda: Mastigoteuthidae) Richard E. YOUNG,1 Michael VECCHIONE 2 & Heather E. BRAID 3 1 University of Hawaii, Honolulu, Hawaii, USA. Email: [email protected] 2 NMFS National Systematics Laboratory, Smithsonian Institution, Washington, DC, USA. Email: [email protected] 3 Institute for Applied Ecology New Zealand, Auckland University of Technology, Auckland, New Zealand. Email: [email protected] 1 urn:lsid:zoobank.org:author:C5177553-E350-4C6A-9D2E-70581F2ED152 2 urn:lsid:zoobank.org:author:E79EA1DA-A7B4-482D-A5E3-AB81E74E4743 3 urn:lsid:zoobank.org:author:A28B5D88-B00C-46A1-9F48-367918CAF2F2 Abstract. A recent paper on the phylogenetic relationships of species within the cephalopod family Mastigoteuthidae meant great progress in stabilizing the classifi cation of the family. The authors, however, left the generic placement of Mastigoteuthis pyrodes unresolved. This problem is corrected here by placing this species in a new monotypic genus, Mastigotragus, based on unique structures of the photophores and the funnel/mantle locking apparatus. Keywords. Mastigoteuthidae, morphology, nomenclature, Mastigotragus gen. nov., deep-sea squid Young R.E., Vecchione M. & Braid H.E. 2014. Mastigotragus, a new generic name for Mastigoteuthis pyrodes Young, 1972 (Cephalopoda: Mastigoteuthidae). European Journal of Taxonomy 105: 1–6. http://dx.doi. -
Årsberetning 2018 Indhold
PINNGORTITALERIFFIK · GRØNLANDS NATURINSTITUT Årsberetning 2018 Indhold Forord ..................................3 Diverse ................................23 Internationale møder . 23 Pinngortitaleriffiks rammer .................4 Nationale møder . 26 Formål . 4 Mødedokumenter . 28 Organisation . 5 Videnskabelige artikler . 32 Finansiering . 6 Rapporter . 38 Det faglige arbejde .......................7 Anden skriftlig formidling . .39 Afdeling for Pattedyr og Fugle . 7 Mundtlig formidling . 41 Afdeling for Fisk og Skaldyr . 8 Andre aktiviteter . 45 Afdeling for Miljø og Råstoffer . 9 Videnskabelig kvalificering Grønlands Klimaforskningscenter . 10 af medarbejdere . 46 Kommunikationssekretariatet . 11 Notitser . 46 De fysiske rammer .......................12 Feltarbejde . 48 Bygningerne . 12 Feltarbejde, Afd. for Fisk og Skaldyr . 48 Feltstationer . 13 Feltarbejde, Skibe og småbåde . 13 Afd. For Miljø og Råstoffer . 49 Bådehus og lagerhal . 14 Feltarbejde, Eksternt finansierede projekter ............16 Afd. For Pattedyr og Fugle . 50 Feltarbejde, Personale ..............................18 Grønlands Klimaforskningscenter . 51 Årsberetning 2018 (V 1.0) Redaktion: Emma Kristensen, Pinngortitaleriffik • Grønlands Naturinstitut Grafik og layout: Ivalu Risager, ISSN 1397-6109 Fotoforlæg til forsidefoto: Fernando Ugarte (GN) ISN 1397-6109 Årsberetningen udkommer kun i elektronisk format og kan downloades fra www.natur.gl/publikationer/aarsberetninger Pinngortitaleriffik · Grønlands Naturinstitut · Greenland Institute of Natural Ressources Postboks -
Deep Ocean Dive
Start Dive Here DDeepeep OceanOcean DiveDive UNIVERSITY OF OTAGO Photos Courtesy of 1 Comb Jelly (Pleurobrachia sp.) 2 Comb jellies take their name from the bands of cilia or combs that (Physalia physalis) beat in waves, shimmering all colours of the rainbow and propelling Bluebottle the animal forward. Bluebottle jellyfish, an oceanic creature, is often found 3 Problems with submarine. washed ashore on New Zealand’s exposed beaches, Miss a turn while it is fixed. following stormy weather. The deep ocean is a similar You see a lot of new deep-sea temperature to 4 creatures. Miss a turn while you your fridge, photograph them. ~3 C Object of the Game 7 To find the elusive Colossal Squid! 5 8 6 9 Take turns throwing the die and 1. moving your submarine forward. Follow the instructions on the square Something swimming where you land. past the window. 10 Follow it and move When approaching the bottom, you may 4 spaces. 2. only move if you have the exact number or less required to reach the squid. 3. Once you have found the squid, 11 80-90% of midwater throw the die one more time to discover deep sea animals can your fate as a Deep Sea Explorer! make their own light. 12 13 You forgot to go to the toilet before you left. You must now use the bottle. Googly Eyed Squid (Teuthowenia pellucida) 14 This transparent squid is probably the most common of the small oceanic squid found in New Zealand waters but is rarely seen alive. 15 Low oxygen levels! Speed up to save air. -
Bottom Melting of Arctic Sea Ice in the Nansen Basin Due to Atlantic Water Influence
Master's Thesis in Physical Oceanography Bottom melting of Arctic Sea Ice in the Nansen Basin due to Atlantic Water influence Morven Muilwijk May 2016 ER SI IV T A N U S B E S R I G E N S UNIVERSITY OFBERGEN GEOPHYSICAL INSTITUTE h The figure on the front page illustrates the Research Vessel Lance drifting with the sea ice in the Arctic Ocean. Below the cold ocean surface layer a thick warm layer of Atlantic Water is found. Heat from this warm layer can potentially be mixed upward and possibly influence the sea ice cover. Abstract The hydrographic situation for a region north of Svalbard is investigated using observations from the Norwegian Young Sea Ice Cruise (N-ICE2015). Observations from January to June 2015 are compared to historical observations with a particular focus on the warm and salty Atlantic Water (AW) entering the Arctic Ocean through the Fram Strait. Here we discuss how the AW has changed over time, what governs its characteristics, and how it might influence the sea ice cover. We find that AW characteristics north of Svalbard are mainly controlled by the distance along the inflow path, and by changes in inflowing AW temperature in the Fram Strait. AW characteristics north of Svalbard are also largely affected by local processes such as sea ice growth, melting and tidal induced mixing. Furthermore, one dimensional model results and observations show that AW has a direct impact on the sea ice cover north of Svalbard. Shallow and warm AW efficiently reduces sea ice growth and results in bottom melting throughout the whole year. -
Mastigotragus, a New Generic Name for Mastigoteuthis Pyrodes Young
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: European Journal of Taxonomy Jahr/Year: 2014 Band/Volume: 0105 Autor(en)/Author(s): Young Richard E., Vecchione Michael, Braid Heather E. Artikel/Article: Mastigotragus, a new generic name for Mastigoteuthis pyrodes Young, 1972 (Cephalopoda: Mastigoteuthidae) 1-6 European Journal of Taxonomy 105: 1–6 ISSN 2118-9773 http://dx.doi.org/10.5852/ejt.2014.105 www.europeanjournaloftaxonomy.eu 2014 · Young R.E., Vecchione M. & Braid H.E. This work is licensed under a Creative Commons Attribution 3.0 License. Research article urn:lsid:zoobank.org:pub:FCD51F6F-A5D6-4466-ADB6-0ADC9F560F66 Mastigotragus, a new generic name for Mastigoteuthis pyrodes Young, 1972 (Cephalopoda: Mastigoteuthidae) Richard E. YOUNG,1 Michael VECCHIONE 2 & Heather E. BRAID 3 1 University of Hawaii, Honolulu, Hawaii, USA. Email: [email protected] 2 NMFS National Systematics Laboratory, Smithsonian Institution, Washington, DC, USA. Email: [email protected] 3 Institute for Applied Ecology New Zealand, Auckland University of Technology, Auckland, New Zealand. Email: [email protected] 1 urn:lsid:zoobank.org:author:C5177553-E350-4C6A-9D2E-70581F2ED152 2 urn:lsid:zoobank.org:author:E79EA1DA-A7B4-482D-A5E3-AB81E74E4743 3 urn:lsid:zoobank.org:author:A28B5D88-B00C-46A1-9F48-367918CAF2F2 Abstract. A recent paper on the phylogenetic relationships of species within the cephalopod family Mastigoteuthidae meant great progress in stabilizing the classifi cation of the family. The authors, however, left the generic placement of Mastigoteuthis pyrodes unresolved. This problem is corrected here by placing this species in a new monotypic genus, Mastigotragus, based on unique structures of the photophores and the funnel/mantle locking apparatus. -
Southeastern Eurasian Basin Termination: Structure and Key Episodes of Teetonic History
Polarforschung 69,251- 257, 1999 (erschienen 2001) Southeastern Eurasian Basin Termination: Structure and Key Episodes of Teetonic History By Sergey B. Sekretov'> THEME 15: Geodynamics of the Arctic Region an area of 50-100 km between the oldest identified spreading anoma1y (Chron 24) and the morphological borders of the Summary: Multiehannel seismie refleetion data, obtained by MAGE in 1990, basin (KARASIK 1968,1980, VOGT et al. 1979, KRISTOFFERSEN reveal the geologieal strueture of the Aretie region between 77-80 "N and 115 1990). The analysis of the magnetic anomaly pattern shows 133 "E, where the Eurasian Basin joins the Laptev Sea eontinental margin. that Gakke1 Ridge is one of the slowest spreading ridges in the South of 80 "N the oeeanie basement of the Eurasian Basin and the conti nental basement of the Laptev Sea deep margin are covered by sediments world. As asymmetry in spreading rates has persisted throug varying from 1.5 km to 8 km in thickness, The seismie velocities range from hout most of Cenozoie, the Nansen Basin has formed faster 1,75 kmJs in the upper unit to 4,5 km/s in the lower part of the section. Sedi than the Amundsen Basin. The lowest spreading rates, less mentary basin development in the area of the Laptev Sea deep margin started than 0.3 cm/yr, occur at the southeastern end of Gakkel Ridge from eontinental rifting between the present Barents-Kara margin and the Lomonosov Ridge in Late Cretaceous time, Sinee 56 Ma the Eurasian Basin in the vicinity of the sediment source areas. -
Feeding Ecology of Cuvier's Beaked Whale (Ziphius Cavirostris)
J. Mar. Biol. Ass. U.K. 2001), 81,687^694 Printed in the United Kingdom Feeding ecology of Cuvier's beaked whale Ziphius cavirostris): a review with new information on the diet of this species M.B. Santos*, G.J. Pierce*, J. HermanO,A.Lo¨ pezP,A.GuerraP,E.Mente*andM.R.Clarke *Department of Zoology, University of Aberdeen, Tillydrone Avenue, Aberdeen, AB24 2TZ, Scotland. ODepartment of Geology and Zoology, Royal Museums of Scotland, Chambers Street, Edinburgh, EH11JF, Scotland. P ECOBIOMAR, Instituto de Investigaciones Marinas, CSIC, Eduardo Cabello, 6, 36208, Vigo, Pontevedra, Spain. `Ancarva', Southdown, Millbrook, Torpoint, Cornwall, PL10 1EZ. E-mail: [email protected] Published information on the diet of Cuvier's beaked whales Ziphius cavirostris Odontoceti: Ziphiidae) is reviewed and new information on the stomach contents of three animals: two stranded in Galicia north-west Spain) in February 1990 at A Lanzada, and in February 1995 at Portonovo; and the third stranded in February 1999 in North Uist Scotland), is presented. The whale stranded in 1990 was a male; the other two were adult females. All animals were 45 m long. The limited published information on the diet of this species indicates that it feeds primarily on oceanic cephalopods although some authors also found remains of oceanic ¢sh and crustaceans. Food remains from the three new samples consisted entirely of cephalopod beaks. The Scottish sample set is the largest recorded to date for this species. The prey identi¢ed consisted of oceanic cephalopods, mainly squid Cephalopoda: Teuthoidea). The most frequently occurring species were the squid Teuthowenia megalops, Mastigoteuthis schmidti and Taonius pavo for the Galician whale stranded in 1990), Teuthowenia megalops and Histioteuthis reversa for the second Galician whale) and T.