Interview with Charles Savona-Ventura
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Molecular Phylogeny of Echiuran Worms (Phylum: Annelida) Reveals Evolutionary Pattern of Feeding Mode and Sexual Dimorphism
Molecular Phylogeny of Echiuran Worms (Phylum: Annelida) Reveals Evolutionary Pattern of Feeding Mode and Sexual Dimorphism Ryutaro Goto1,2*, Tomoko Okamoto2, Hiroshi Ishikawa3, Yoichi Hamamura4, Makoto Kato2 1 Department of Marine Ecosystem Dynamics, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan, 2 Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan, 3 Uwajima, Ehime, Japan, 4 Kure, Hiroshima, Japan Abstract The Echiura, or spoon worms, are a group of marine worms, most of which live in burrows in soft sediments. This annelid- like animal group was once considered as a separate phylum because of the absence of segmentation, although recent molecular analyses have placed it within the annelids. In this study, we elucidate the interfamily relationships of echiuran worms and their evolutionary pattern of feeding mode and sexual dimorphism, by performing molecular phylogenetic analyses using four genes (18S, 28S, H3, and COI) of representatives of all extant echiuran families. Our results suggest that Echiura is monophyletic and comprises two unexpected groups: [Echiuridae+Urechidae+Thalassematidae] and [Bone- lliidae+Ikedidae]. This grouping agrees with the presence/absence of marked sexual dimorphism involving dwarf males and the paired/non-paired configuration of the gonoducts (genital sacs). Furthermore, the data supports the sister group relationship of Echiuridae and Urechidae. These two families share the character of having anal chaetae rings around the posterior trunk as a synapomorphy. The analyses also suggest that deposit feeding is a basal feeding mode in echiurans and that filter feeding originated once in the common ancestor of Urechidae. Overall, our results contradict the currently accepted order-level classification, especially in that Echiuroinea is polyphyletic, and provide novel insights into the evolution of echiuran worms. -
Rapid Biodiversity Assessment of REPUBLIC of NAURU
RAPID BIODIVERSITY ASSESSMENT OF REPUBLIC OF NAURU JUNE 2013 NAOERO GO T D'S W I LL FIRS SPREP Library/IRC Cataloguing-in-Publication Data McKenna, Sheila A, Butler, David J and Wheatley, Amanda. Rapid biodiversity assessment of Republic of Nauru / Sheila A. McKeena … [et al.] – Apia, Samoa : SPREP, 2015. 240 p. cm. ISBN: 978-982-04-0516-5 (print) 978-982-04-0515-8 (ecopy) 1. Biodiversity conservation – Nauru. 2. Biodiversity – Assessment – Nauru. 3. Natural resources conservation areas - Nauru. I. McKeena, Sheila A. II. Butler, David J. III. Wheatley, Amanda. IV. Pacific Regional Environment Programme (SPREP) V. Title. 333.959685 © SPREP 2015 All rights for commercial / for profit reproduction or translation, in any form, reserved. SPREP authorises the partial reproduction or translation of this material for scientific, educational or research purposes, provided that SPREP and the source document are properly acknowledged. Permission to reproduce the document and / or translate in whole, in any form, whether for commercial / for profit or non-profit purposes, must be requested in writing. Secretariat of the Pacific Regional Environment Programme P.O. Box 240, Apia, Samoa. Telephone: + 685 21929, Fax: + 685 20231 www.sprep.org The Pacific environment, sustaining our livelihoods and natural heritage in harmony with our cultures. RAPID BIODIVERSITY ASSESSMENT OF REPUBLIC OF NAURU SHEILA A. MCKENNA, DAVID J. BUTLER, AND AmANDA WHEATLEY (EDITORS) NAOERO GO T D'S W I LL FIRS CONTENTS Organisational Profiles 4 Authors and Participants 6 Acknowledgements -
Systematics, Evolution and Phylogeny of Annelida – a Morphological Perspective
Memoirs of Museum Victoria 71: 247–269 (2014) Published December 2014 ISSN 1447-2546 (Print) 1447-2554 (On-line) http://museumvictoria.com.au/about/books-and-journals/journals/memoirs-of-museum-victoria/ Systematics, evolution and phylogeny of Annelida – a morphological perspective GÜNTER PURSCHKE1,*, CHRISTOPH BLEIDORN2 AND TORSTEN STRUCK3 1 Zoology and Developmental Biology, Department of Biology and Chemistry, University of Osnabrück, Barbarastr. 11, 49069 Osnabrück, Germany ([email protected]) 2 Molecular Evolution and Animal Systematics, University of Leipzig, Talstr. 33, 04103 Leipzig, Germany (bleidorn@ rz.uni-leipzig.de) 3 Zoological Research Museum Alexander König, Adenauerallee 160, 53113 Bonn, Germany (torsten.struck.zfmk@uni- bonn.de) * To whom correspondence and reprint requests should be addressed. Email: [email protected] Abstract Purschke, G., Bleidorn, C. and Struck, T. 2014. Systematics, evolution and phylogeny of Annelida – a morphological perspective . Memoirs of Museum Victoria 71: 247–269. Annelida, traditionally divided into Polychaeta and Clitellata, is an evolutionary ancient and ecologically important group today usually considered to be monophyletic. However, there is a long debate regarding the in-group relationships as well as the direction of evolutionary changes within the group. This debate is correlated to the extraordinary evolutionary diversity of this group. Although annelids may generally be characterised as organisms with multiple repetitions of identically organised segments and usually bearing certain other characters such as a collagenous cuticle, chitinous chaetae or nuchal organs, none of these are present in every subgroup. This is even true for the annelid key character, segmentation. The first morphology-based cladistic analyses of polychaetes showed Polychaeta and Clitellata as sister groups. -
Who Played a Key Role During the Development of Our Modern-Day Taxonomy and How Does the World Register of Marine Species Contribute to This?
Report Who played a key role during the development of our modern-day taxonomy and how does the World Register of Marine Species contribute to this? By Daisy ter Bruggen Module LKZ428VNST1 Project internship Van Hall Larenstein, Agora 1, 8934 AL Leeuwarden [email protected] Abstract: Our Western taxonomy officially began with Linnaeus. Nevertheless, equally important discoveries and research has been done long before the Linnaean system was introduced. Aristotle and Linnaeus are two of the most well-known names in history when discussing taxonomy and without them the classification system we use today might have never existed at all. Their interest, research and knowledge in nature was influenced by their upbringing and played a major factor in the running of their lives. Introduction The definition of taxonomy according to the Convention on Biological Diversity “Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world” (2019). Aristotle and Linnaeus are two of the most well-known names in history when discussing taxonomy and without them the classification system we use today might have never existed at all. Their interest, research and knowledge in nature was influenced by their upbringing and played a major factor in the running of their lives. Aristotle (384 BC-322 BC) was a Greek philosopher. He was born in Stagira, a small town in Macedonia, Northern Greece (Voultsiadou, Gerovasileiou, Vandepitte, Ganias, & Arvanitidis, 2017). At the age of seventeen, he went to Athens, and studied in Plato’s Academy for 20 years. Which is where he developed his passion to study nature. -
Sea Pens and Burrowing Megafauna
SEA PENS AND BURROWING MEGAFAUNA An overview of dynamics and sensitivity characteristics for conservation management of marine SACs David J. Hughes Centre for Coastal and Marine Sciences Dunstaffnage Marine Laboratory, Oban AUGUST 1998 Prepared for Scottish Association for Marine Science (SAMS) UK Marine SACs Project, Task Manager A.M.W. Wilson, SAMS Acknowledgements I would like to thank the various reviewers of this report for their constructive suggestions and for access to unpublished information. Special thanks are due to Jim Atkinson, Mike Kaiser and Colin Chapman. I am also grateful to all others who provided information on particular sites, and to Jane Dodd and Elvira Poloczanska for their help with underwater photography. Citation: Hughes, D.J. 1998. Sea pens & burrowing megafauna (volume III). An overview of dynamics and sensitivity characteristics for conservation management of marine SACs. Scottish Association for Marine Science (UK Marine SACs Project). 105 Pages. CONTENTS PREFACE 5 EXECUTIVE SUMMARY 7 I. INTRODUCTION 13 A. NATURE AND IMPORTANCE OF THE BIOTOPE COMPLEX 13 B. KEY POINTS FROM CHAPTER I 23 II. STATUS AND DISTRIBUTION 25 A. STATUS WITHIN THE MNCR BIOTOPE CLASSIFICATION 25 B. OCCURRENCE WITHIN CANDIDATE SACs 26 C. DISTRIBUTION OUTSIDE THE BRITISH ISLES 35 D. KEY POINTS FROM CHAPTER II 36 III. ENVIRONMENTAL REQUIREMENTS AND PHYSICAL 37 ATTRIBUTES A. PHYSICAL ENVIRONMENT 37 B. KEY POINTS FROM CHAPTER III 41 IV. BIOLOGY AND ECOLOGICAL FUNCTIONING 43 A. BIOLOGY OF THE MAJOR CHARACTERIZING SPECIES 43 B. COMMUNITY ECOLOGY: INTERACTIONS BETWEEN SPECIES 46 C. KEY POINTS FROM CHAPTER IV 51 V. SENSITIVITY TO NATURAL EVENTS 53 A. CASE STUDIES OF POPULATION STABILITY AND CHANGE 53 B. -
Fauna of Australia 4A Polychaetes & Allies, Echiura
FAUNA of AUSTRALIA Volume 4A POLYCHAETES & ALLIES The Southern Synthesis 4. PHYLUM ECHIURA STANLEY J. EDMONDS (Deceased 16 July 1995) © Commonwealth of Australia 2000. All material CC-BY unless otherwise stated. At night, Eunice Aphroditois emerges from its burrow to feed. Photo by Roger Steene DEFINITION AND GENERAL A DESCRIPTION The phylum Echiura comprises a group of non- segmented, coelomate, bilaterally symmetrical, worm-like marine invertebrates. Echiurans have a sausage-shaped muscular trunk and an anteriorly placed extensible proboscis (Fig. 4.1; Pls 11.1–11.6). They are commonly known as spoon worms, a name derived from the function of the proboscis which, in most species, is used to collect sediment from around the burrow. The saccular trunk is usually light to dark green in B colour, or sometimes, reddish brown, and usually bears numerous flat or swollen glandular and sensory papillae. A pair of golden-brown chaetae is usually present on the ventral surface of the trunk, just posterior to the mouth (Fig. 4.2). In a few species a number of chaetae may form a complex; in others, chaetae are absent. One or two almost complete rings of larger anal chaetae surround the posterior region of the trunk in Urechis and Echiurus, respectively. The proboscis is usually flattened and ribbon-like, but may be fleshy and spatulate. It is highly extensible and C contractile, but cannot be withdrawn into the body cavity like the introvert of sipunculans. The distal end of the proboscis is usually truncate or bifid (Fig. 4.1C). In some deep-sea species the proboscis is modified considerably and assists in the collection of food. -
Meeting the MPA Network Principle of Viability
Natural England Commissioned Report NECR043 Meeting the MPA Network Principle of Viability Feature specific recommendations for species and habitats of conservation importance First published 11 June 2010 www.naturalengland.org.uk Foreword Natural England commission a range of reports from external contractors to provide evidence and advice to assist us in delivering our duties. The views in this report are those of the authors and do not necessarily represent those of Natural England. © www.seasurvey.co.uk Blue mussels Mytilus edulis Background This report was commissioned in September Conservation Zones to contribute to the 2009 to provide advice on viability, one of the ecologically coherent MPA network. The report seven Marine Protected Area (MPA) network has been subjected to an international peer design principles. This research used existing review exercise by Defra nominated marine literature to provide evidence on the viable area scientists. required to conserve habitats and species of conservation importance. This report should be cited as: The findings are being used by Natural England HILL, J., PEARCE, B., GEORGIOU, L., and JNCC to inform the Ecological Network PINNION, J., GALLYOT, J. 2010. Meeting the Guidance for the Marine Conservation MPA Network Principle of Viability: Feature Zone Project. The Ecological Network Guidance specific recommendations for species and will guide stakeholders in identifying Marine habitats of conservation importance. Natural England Commissioned Reports, Number 043. Natural England Project Manager - Dr Jen Ashworth, Senior Specialist Marine, Evidence, Northminster House, Peterborough PE1 1UA [email protected] Contractor - Marine Ecological Surveys Limited, 24a Monmouth Place, Bath, BA1 2AY www.seasurvey.co.uk Keywords - Marine Protected Area (MPA), Marine Conservation Zone (MCZ), network, ecological coherence, viability Further information This report can be downloaded from the Natural England website: www.naturalengland.org.uk. -
Towards Integrated Marine Research Strategy and Programmes CIGESMED
Towards Integrated Marine Research Strategy and Programmes CIGESMED : Coralligenous based Indicators to evaluate and monitor the "Good Environmental Status" of the Mediterranean coastal waters French dates: 1st March2013 -29th October2016 Greek dates: 1st January2013 -31st December2015 Turkish dates: 1st February2013 –31st January2016 FINAL REPORT Féral (J.-P.)/P.I., Arvanitidis (C.), Chenuil (A.), Çinar (M.E.), David (R.), Egea (E.), Sartoretto (S.) 1 INDEX 1. Project consortium. Total funding and per partner .............................................................. 3 2. Executive summary ............................................................................................................... 3 3. Aims and scope (objectives) .................................................................................................. 6 4. Results by work package ....................................................................................................... 8 WP1: MANAGEMENT, COORDINATION & REPORTING ............................................................. 8 WP2: CORALLIGEN ASSESSMENT AND THREATS ..................................................................... 15 WP3: INDICATORS DEVELOPMENT AND TEST ......................................................................... 39 WP4: INNOVATIVE MONITORING TOOLS ................................................................................ 52 WP5: CITIZEN SCIENCE NETWORK IMPLEMENTATION ........................................................... 58 WP6: DATA MANAGEMENT, MAPPING -
Phylum Annelida True Coelom Present (Segmented Worms, Bristle Worms) Mesoderm on Inside of Body Wall and Outside 15,000 Species of Digestive System
Phylum Annelida true coelom present (segmented worms, bristle worms) mesoderm on inside of body wall and outside 15,000 species of digestive system layers of muscles inside body wall and on outside of large successful phylum in water & on land digestive tract include earthworms, sand worms, bristle worms, clam worms, fan worms, leeches with head-body-pygidium some with bizzare forms worldwide distribution: head (prostomium & peristomium) marine, brackish, freshwater and terrestrial most annelids show some degree of Body Form cephalization with a distinct head (=prostomium) elongated wormlike body tentacles, palps and sensory structures <1mm to 3 meters peristomium behind prostomium contains the hollow tube-within-a-tube design mouth one of the most successful animal designs with pharynx and chitinous jaws à room for development of complex organs body with well developed metamerism with muscle layers (=segmentation) à allows for circulation of body fluids most prominent distinguishing feature à provides hydrostatic skeleton seen in just a few other phyla: eg arthropods, chordates segments are separated by tissue = septae Animals: Phuylum Annelida; Ziser Lecture Notes, 2015.10 1 Animals: Phuylum Annelida; Ziser Lecture Notes, 2015.10 2 epidermis a single layer of cells (columnar epithelium) each segment has it’s own set of muscles and other organs epidermis secretes a thin flexible protective cuticle allows more efficient hydrostatic skeleton for most annelids have setae à small chitinous bristles burrowing and movement secreted by epidermis -
Echiura: Bonelliidae)
COREMar. Behav. Physiol., 1979, Vol. 6, pp. 257-267 Metadata, citation and similar papers at core.ac.uk Provided0091-181X/79/0604-025 by OAR@UM 7 $04.50/0 © 1979 Gordon and Breach Science Publishers, Inc. Printed in Great Britain Evidence of a Chemical Defence Mechanism in the Echiuran Worm Bonellia viridis Rolando (Echiura: Bonelliidae) P. J. SCHEMBRI† and V. JACCARINI The Fort St. Lucian Marine Station. The University of Malta. Msida, Malta (Received May 9, 1979) Evidence for the existence of chemical defence in the echiuran Bonellia viridis is provided by investigating the palatability of Bonellia tissues to the shrimp Palaemon elegans, the teleosts Oblada melanura and Mugil labeo, and the anthozoan Anemonia sulcata. Bonellia tissues are shown to be highly distasteful to the shrimp. The results with the teleosts and the anthozoan are less clear-cut though Bonellia extracts are shown to be distasteful also to these species. INTRODUCTION Bonellia viridis Rolando, 1822 is a soft-bodied worm with no visible means of defence. These worms normally live as commensals in the rock burrows of the shrimp Upogebia deltaura (Schembri and Jaccarini, 1978) but are also found moving freely beneath loose boulders (Rolando, 1822; Schembri and Downloaded by [University of Glasgow] at 12:14 29 September 2014 Jaccarini, 1977, 1978). During feeding, the proboscis is protruded from the burrows to graze over the surrounding substratum, and at full extension, the proboscis may have a length of up to 1.5 m (Jaccarini and Schembri, 1977a, 1977b). The animal is thus often exposed to predators. Fish stimulated to feeding frenzy by the breaking open of sea urchins in the vicinity of Bonellia individuals were observed not to nibble at or even investigate the proboscides of feeding worms, and the speed of retraction of the proboscides, when † Present address: University Marine Biological Station, Millport, Isle of Cumbrae, Scotland KA28 0EG. -
Checklist of the Phyla Platyhelminthes
Turkish Journal of Zoology Turk J Zool (2014) 38: 698-722 http://journals.tubitak.gov.tr/zoology/ © TÜBİTAK Review Article doi:10.3906/zoo-1405-70 Checklist of the phyla Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (Tunicata, Cephalochordata, and Hemichordata) from the coasts of Turkey Melih Ertan ÇINAR* Department of Hydrobiology, Faculty of Fisheries, Ege University, Bornova, İzmir, Turkey Received: 28.05.2014 Accepted: 28.06.2014 Published Online: 10.11.2014 Printed: 28.11.2014 Abstract: In this paper, the current status of the species diversity of 13 phyla, namely Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (invertebrates, only Tunicata, Cephalochordata, and Hemichordata) along the coasts of Turkey is reviewed. Platyhelminthes was represented by 186 species, Chordata by 64 species, Nemertea by 26 species, Nematoda by 20 species, Xenacoelomorpha by 11 species, Chaetognatha by 10 species, Acanthocephala by 9 species, Brachiopoda and Phoronida by 4 species, Myxozoa and Tradigrada by 2 species, and Cephalorhyncha and Echiura by 1 species. Two platyhelminth (Planocera cf. graffi and Prostheceraeus vittatus), 2 nemertean (Drepanogigas albolineatus and Tubulanus superbus), 1 phoronid (Phoronis australis), and 2 ascidian (Polyclinella azemai and Ciona roulei) species are being newly reported for the first time from the coasts of Turkey. Four tunicate (Symplegma brakenhielmi, Microcosmus exasperatus, Herdmania momus, and Phallusia nigra) and 1 chaetognath (Ferosagitta galerita) species were classified as alien species in the region. Key words: Miscellanea, other phyla, diversity, checklist, alien species, Turkey 1. Introduction coasts, with some faunistic data mainly derived from the The phylum Platyhelminthes comprises free-living and detailed studies performed in the Sea of Marmara, the parasitic flatworms. -
Review Article — —
Zoological Studies 44(2) : 157-190 (2005) — --------- ----------- ‘— ^ o o l o m c i Review Article — — Macrofauna Associated with Echiuran Burrows: A Review with New Observations of the Innkeeper Worm,Ochetostoma erythrogrammon Leuckart and Rüppel, in Venezuela Arthur Anker1*, Galena-Vantsetti Murina2, Carlos Lira3, Jonathan A. Vera Caripe3, A. Richard Palmer1, and Ming-Shiou Jeng4 1 Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9, Canada E-mail: [email protected], [email protected] 2Department of Mariculture and Applied Oceanology, Institute of the Biology of the Southern Seas N.A.S. Ukraine, 2, Nakhimov Avenue, 99011, Sevastopol, Ukraine. E-mail:[email protected] 3Universidad de Oriente, Boca del Rio, Isla Margarita, Estado Nueva Esparta, Venezuela E-mail: [email protected], [email protected], [email protected] 4Research Center for Biodiversity, Academia Sinica, Taipei, Taiwan 115, R.O.C. E-mail:[email protected] CONTENTS ABSTRACT ........................................................................................................................................................................ 157 INTRODUCTION ...............................................................................................................................................................158 Biology of the Echiura ............................................................................................................................................158 Reviewof Symbiotic Animals Associated with