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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. -
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Memoirs of Museum Victoria 69: 355–363 (2012) ISSN 1447-2546 (Print) 1447-2554 (On-line) http://museumvictoria.com.au/About/Books-and-Journals/Journals/Memoirs-of-Museum-Victoria Some hydroids (Hydrozoa: Hydroidolina) from Dampier, Western Australia: annotated list with description of two new species. JEANETTE E. WATSON Honorary Research Associate, Marine Biology, Museum Victoria, PO Box 666, Melbourne, Victoria Australia 3001. ([email protected]) Abstract Jeanette E. Watson, 2012. Some hydroids (Hydrozoa: Hydroidolina) from Dampier, Western Australia: annotated list with description of two new species. Memoirs of Museum Victoria 69: 355–363. Eleven species of hydroids including two new (Halecium corpulatum and Plumularia fragilia) from a depth of 50 m, 50 km north of Dampier, Western Australia are reported. The tropical hydroid fauna of Western Australia is poorly known; species recorded here show strong affinity with the Indonesian and Indo–Pacific region. Keywords Hydroids, tropical species, Dampier, Western Australia Introduction Sertolaria racemosa Cavolini, 1785: 160, pl. 6, figs 1–7, 14–15 Sertularia racemosa. – Gmelin, 1791: 3854 A collection of hydroids provided by the Western Australian Eudendrium racemosum.– Ehrenberg, 1834: 296.– von Museum is described. The collection comprises 11 species Lendenfeld, 1885: 351, 353.– Millard and Bouillon, 1973: 33.– Watson, including two new. Material was collected 50 km north of 1985: 204, figs 63–67 Dampier, Western Australia, from the gas production platform Material examined. WAM Z31857, material ethanol preserved. Four Ocean Legend (019° 42' 18.04" S, 118° 42' 26.44" E). The infertile colonies, the tallest 40 mm long, on purple sponge. collection was made from a depth of 50 m by commercial divers on 4th August, 2011. -
The Evolution of Siphonophore Tentilla for Specialized Prey Capture in the Open Ocean
The evolution of siphonophore tentilla for specialized prey capture in the open ocean Alejandro Damian-Serranoa,1, Steven H. D. Haddockb,c, and Casey W. Dunna aDepartment of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520; bResearch Division, Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039; and cEcology and Evolutionary Biology, University of California, Santa Cruz, CA 95064 Edited by Jeremy B. C. Jackson, American Museum of Natural History, New York, NY, and approved December 11, 2020 (received for review April 7, 2020) Predator specialization has often been considered an evolutionary makes them an ideal system to study the relationships between “dead end” due to the constraints associated with the evolution of functional traits and prey specialization. Like a head of coral, a si- morphological and functional optimizations throughout the organ- phonophore is a colony bearing many feeding polyps (Fig. 1). Each ism. However, in some predators, these changes are localized in sep- feeding polyp has a single tentacle, which branches into a series of arate structures dedicated to prey capture. One of the most extreme tentilla. Like other cnidarians, siphonophores capture prey with cases of this modularity can be observed in siphonophores, a clade of nematocysts, harpoon-like stinging capsules borne within special- pelagic colonial cnidarians that use tentilla (tentacle side branches ized cells known as cnidocytes. Unlike the prey-capture apparatus of armed with nematocysts) exclusively for prey capture. Here we study most other cnidarians, siphonophore tentacles carry their cnidocytes how siphonophore specialists and generalists evolve, and what mor- in extremely complex and organized batteries (3), which are located phological changes are associated with these transitions. -
(Echinoidea, Echinidae) (Belgium) by Joris Geys
Meded. Werkgr. Tert. Kwart. Geol. 26(1) 3-10 1 fig., 1 tab., 1 pi. Leiden, maart 1989 On the presence of Gracilechinus (Echinoidea, Echinidae) in the Late Miocene of the Antwerp area (Belgium) by Joris Geys University of Antwerp (RUCA), Antwerp, Belgium and Robert Marquet Antwerp, Belgium. Geys, J., & R. Marquet. On the presence of Gracilechinus (Echinoidea, in the of — Echinidae) Late Miocene the Antwerp area (Belgium). Meded. Werkgr. Tert. Kwart. Geol., 26(1): 00-00, 1 fig., 1 tab., 1 pi. Leiden, March 1989. Some well-preserved specimens of the regular echinoid Gracilechinus gracilis nysti (Cotteau, 1880) were collected in a temporary outcrop at Borgerhout-Antwerp, in sandstones reworked from the Deurne Sands (Late Miocene). The systematic status of this subspecies is discussed. The present state of knowledge of the Echinidae from the Neogene of the North Sea Basin is reviewed. Prof. Dr J. Geys, Dept. of Geology, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium. Dr R. Marquet, Constitutiestraat 50, B-2008 Antwerp, Belgium, Contents — 3 Introduction, p. 4 Systematic palaeontology, p. 6 Discussion, p. Echinidae in the Neogene of the North Sea Basin—some considerations on 8 systematics, p. 10. References, p. INTRODUCTION extensive excavations the of E17-E18 indicated E3 Because of along western verge motorway (also as ‘Kleine and Ring’) at Borgerhout-Antwerp (Belgium), a remarkable outcrop of Neogene Quaternary beds accessible from The was March to November 1987. outcrop was situated between this motorway and the and extended from the the both ‘Singel’-road, ‘Stenenbrug’ to ‘Zurenborgbrug’, on sides 4 of the exit. -
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. -
Central Mediterranean Sea) Subtidal Cliff: a First, Tardy, Report
Biodiversity Journal , 2018, 9 (1): 25–34 Mollusc diversity in Capo d’Armi (Central Mediterranean Sea) subtidal cliff: a first, tardy, report Salvatore Giacobbe 1 & Walter Renda 2 ¹Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Al - contres 31, 98166 Messina, Italy; e-mail: [email protected] 2Via Bologna, 18/A, 87032 Amantea, Cosenza, Italy; e-mail: [email protected] ABSTRACT First quantitative data on mollusc assemblages from the Capo d’Armi cliff, at the south en - trance of the Strait of Messina, provided a baseline for monitoring changes in benthic biod- iversity of a crucial Mediterranean area, whose depletion might already be advanced. A total of 133 benthic taxa have been recorded, and their distribution evaluated according to depth and seasonality. Bathymetric distribution showed scanty differences between the 4-6 meters and 12-16 meters depth levels, sharing all the 22 most abundant species. Season markedly affected species composition, since 42 taxa were exclusively recorded in spring and 35 in autumn, contrary to 56 shared taxa. The occurrence of some uncommon taxa has also been discussed. The benthic mollusc assemblages, although sampled in Ionian Sea, showed a clear western species composition, in accordance with literature placing east of the Strait the bound- ary line between western and eastern Mediterranean eco-regions. Opposite, occasional records of six mesopelagic species, which included the first record for this area of Atlanta helicinoi - dea -
Biodiversity Journal, 2020, 11 (4): 861–870
Biodiversity Journal, 2020, 11 (4): 861–870 https://doi.org/10.31396/Biodiv.Jour.2020.11.4.861.870 The biodiversity of the marine Heterobranchia fauna along the central-eastern coast of Sicily, Ionian Sea Andrea Lombardo* & Giuliana Marletta Department of Biological, Geological and Environmental Sciences - Section of Animal Biology, University of Catania, via Androne 81, 95124 Catania, Italy *Corresponding author: [email protected] ABSTRACT The first updated list of the marine Heterobranchia for the central-eastern coast of Sicily (Italy) is here reported. This study was carried out, through a total of 271 scuba dives, from 2017 to the beginning of 2020 in four sites located along the Ionian coasts of Sicily: Catania, Aci Trezza, Santa Maria La Scala and Santa Tecla. Through a photographic data collection, 95 taxa, representing 17.27% of all Mediterranean marine Heterobranchia, were reported. The order with the highest number of found species was that of Nudibranchia. Among the study areas, Catania, Santa Maria La Scala and Santa Tecla had not a remarkable difference in the number of species, while Aci Trezza had the lowest number of species. Moreover, among the 95 taxa, four species considered rare and six non-indigenous species have been recorded. Since the presence of a high diversity of sea slugs in a relatively small area, the central-eastern coast of Sicily could be considered a zone of high biodiversity for the marine Heterobranchia fauna. KEY WORDS diversity; marine Heterobranchia; Mediterranean Sea; sea slugs; species list. Received 08.07.2020; accepted 08.10.2020; published online 20.11.2020 INTRODUCTION more researches were carried out (Cattaneo Vietti & Chemello, 1987). -
PUNIC ECHINODERM REMAINS Excavated from Tas-Silg, Malta
PUNIC ECHINODERM REMAINS Excavated from Tas-Silg, Malta C. Savona-Ventura Report submitted to the Department of Archaeology, University of Malta, 1999 The Tas-Silg Punic site is situated at an elevation of about 125 feet above sea level. This situation, together with the significant distance from the shore (circa 700 metres), makes it highly unlikely that marine animal remains excavated from the site represent shore wash. There are more likely to have been brought to the site by man. There is evidence to believe that since prehistoric and possibly classical times, the southeastern coast of Malta has gradually tilted towards the sea. The evidence for sinking during the classical period may be inferred by the presence of cart-ruts which cease suddenly at the edge of the water at Birzebbugia (St. George’s Bay) and cart- ruts which together with artificial caldrons occur beneath the water at Marsaxlokk. 1 This means that the Tas-Silg site was probably even higher above sea-level during the classical period than at present. Echinoderm remains were excavated in plentiful amounts from the site. The amount of fragments obtained from the site further suggests that these represent intentional transportation to the site by the action of man. Accidental transportation is unlikely to have accounted for large quantities of this marine animal. Two small fragments were obtained from the Tas-Silg Punic site on 22nd July 1998. The fragments represent 3 fused and one separate inter-ambulacral plates. The spine pattern of each inter-ambulacral plate is diagrammatically represented below. The spine pattern was characterised by large spines surrounded by a satellite series of smaller spines. -
Comparison of Some Interesting Molluscs, Trawled by the Belgian Fishery in the Bay of Biscay, with Similar Representatives from Adjacent Waters: Part III
Comparison of some interesting molluscs, trawled by the Belgian fishery in the Bay of Biscay, with similar representatives from adjacent waters: part III Frank Nolf 1 & Jean-Paul Kreps 2 1 Pr. Stefanieplein, 43/8 – B-8400 Oostende [email protected] 2 Rode Kruisstraat, 5 – B-8300 Knokke-Heist [email protected] Keywords: Bay of Biscay, W France, Belgian XLIV, Fig. 248; Pl. XLV, Figs 249-254), the North fishery, Mollusca, Gastropoda, Bivalvia. Sea (Pl. XLVI, Figs 255-257) and the English Channel south to the Bay of Biscay (Pl. XLIV, Abstract: In the third part of the report on the Figs 243-244) and Portugal (Pl. XLVI, Figs 260- molluscs collected by the Belgian fishery in the 261). Bay of Biscay during the last decade, the Specimens reported from the Mediterranean are remaining gastropods and a first series of erroneous identifications and have to be bivalves are briefly described, figured and attributed to Colus jeffreysianus (P. Fischer, compared with similar specimens from North 1868). The species lives on muddy and sandy Atlantic waters, the Mediterranean Sea or West bottoms, usually from 30 to 800 m deep. It is less Africa. common and lives deeper in the south of its range. Abbreviations: This is a rather variable species with respect to FN: private collection of Frank Nolf. its shell, especially in relation to the H.: height. breadth/height ratio, the size of the aperture and JPK: private collection of Jean-Paul Kreps. the length of the siphonal canal. This is probably JV: private collection of Johan Verstraeten. due to its occurrence in several different L.: length. -
Réseau De Surveillance Benthique – Région Bretagne Approche Sectorielle Subtidale : Identification Et Caractérisation Des Habitats Benthiques Du Secteur Quiberon
Institut français de recherche pour l'exploitation de la mer – Centre de Bretagne Département Dynamiques de l'Environnement Côtier (DYNECO) Laboratoire Ecologie Benthique Ehrhold A., Hamon D., Chevalier C., Gaffet J.D., Caisey X., Blanchet A., Alix A.S. RST/IFREMER/DY NECO/EB/10-03/REBENT Réseau de surveillance benthique Région Bretagne Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Quiberon Coordination www.rebent.org Citation du document Ehrhold A., Hamon D., Chevalier C., Gaffet J.D., Caisey X., Blanchet A., Alix A.S., 2010. Réseau de surveillance benthique (REBENT) – Région Bretagne. Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Quiberon. RST/IFREMER/DYNECO/Ecologie benthique/10-03/REBENT, 81 p. + 8 annexes. Numéro d'identification du rapport : DYNECO/EB/08-03/REBENT date de publication Décembre 2010 nombre de pages Diffusion : libre restreinte interdite 81 p. + 8 annexes bibliographie (Oui) Validé par : illustration(s) (Oui) Bajjouk Touria langue du rapport Français Version du document : Définitive Titre et sous-titre du rapport : Réseau de surveillance benthique – Région Bretagne Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Quiberon Titre traduit : Rebent network – Brittany pilot Subtidal sector habitat strategy : Identification and characterization of benthic habitats in Quiberon bay Auteur(s) principal(aux) : nom, prénom Organisme / Direction / Service, laboratoire -
Elles En Désuétude Suite Aux Nombreuses Mises
3 Sommaire Résumé/Abstract 3 Introduction 3 Liste des espèces 5 SsCl. Hydroidomedusae 5 O. Actinulida 5 O. Anthomednsae 5 S.O. Filifera 5 S.O. Capitata 19 O. Langiomedusae 30 O. Leptomedusae 31 S.O. Conica 31 S.O. Proboscoida 78 O. Limnomedusae 86 O. Narcomedusae 89 O. Trachymedusae 91 Index 94 Bibliographie 106 RESUME Les Hydrozoaires non Siphonophores des collections de l'IRSNB, comprenant 769 espèces, sont présentés suivant la terminologie la plus couramment admise dans la littérature actuelle. Ces collections renferment du matériel type de 66 espèces nominales et variétés. Pour chaque espèce, dans la mesure du possible, l'on donne: la localité, le numéro d'inventaire, le nombre de spécimens, de colonies et de préparations microscopiques, le mode de conservation (alcool, formol, à sec) et la date de récolte. Mots-clés: Hydrozoaires non Siphonophores, collection, IRSNB, taxonomie, matériel type. ABSTRACT Non Siphonophoran Hydrozoan from the collections of the RBINS, including 769 species, are presented according to the most current use in the actual literature. These collections house type material of 66 nominal species and varieties. For each species, and whenever possible, the locality, the reference number in the collection, the number of specimens, of colonies and of microscopie slides, the mode of préservation (alcohol, formalin, dry) and the date of collecting are given. Keywords: Non Siphonophoran Hydrozoan, collection, RBINS, taxonomy, type material. INTRODUCTION Les collections d'Hydrozoaires non Siphonophores de l'Institut Royal des Sciences Naturelles de Belgique (IRSNB) sont très importantes, comprenant 769 espèces. Elles proviennent essentiellement de deux collections, celle de l'Institut proprement dite accumulée et gérée par feu le Dr. -
Vanessa Shimabukuro Orientador: Antonio Carlos Marques
Dissertação apresentada ao Instituto de Biociências da Universidade de São Paulo, para a obtenção de Título de Mestre em Ciências, na Área de Zoologia Título: As associações epizóicas de Hydrozoa (Cnidaria: Leptothecata, Anthoathecata e Limnomedusae): I) Estudo faunístico de hidrozoários epizóicos e seus organismos associados; II) Dinâmica de comunidades bentônicas em substratos artificiais Aluna: Vanessa Shimabukuro Orientador: Antonio Carlos Marques Sumário Capítulo 1....................................................................................................................... 3 1.1 Introdução ao epizoísmo em Hydrozoa ...................................................... 3 1.2 Objetivos gerais do estudo ............................................................................ 8 1.3 Organização da dissertação .......................................................................... 8 1.4 Referências bibliográficas.............................................................................. 9 Parte I: Estudo faunístico de hidrozoários (Cnidaria, Hydrozoa) epizóicos e seus organismos associados ............................................................................. 11 Capítulo 2..................................................................................................................... 12 2.1 Abstract ............................................................................................................. 12 2.2 Resumo.............................................................................................................