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CHAPTER 10 MOLLUSCS 10.1 a Significant Space A
PART file:///C:/DOCUME~1/ROBERT~1/Desktop/Z1010F~1/FINALS~1.HTM CHAPTER 10 MOLLUSCS 10.1 A Significant Space A. Evolved a fluid-filled space within the mesoderm, the coelom B. Efficient hydrostatic skeleton; room for networks of blood vessels, the alimentary canal, and associated organs. 10.2 Characteristics A. Phylum Mollusca 1. Contains nearly 75,000 living species and 35,000 fossil species. 2. They have a soft body. 3. They include chitons, tooth shells, snails, slugs, nudibranchs, sea butterflies, clams, mussels, oysters, squids, octopuses and nautiluses (Figure 10.1A-E). 4. Some may weigh 450 kg and some grow to 18 m long, but 80% are under 5 centimeters in size. 5. Shell collecting is a popular pastime. 6. Classes: Gastropoda (snails…), Bivalvia (clams, oysters…), Polyplacophora (chitons), Cephalopoda (squids, nautiluses, octopuses), Monoplacophora, Scaphopoda, Caudofoveata, and Solenogastres. B. Ecological Relationships 1. Molluscs are found from the tropics to the polar seas. 2. Most live in the sea as bottom feeders, burrowers, borers, grazers, carnivores, predators and filter feeders. 1. Fossil evidence indicates molluscs evolved in the sea; most have remained marine. 2. Some bivalves and gastropods moved to brackish and fresh water. 3. Only snails (gastropods) have successfully invaded the land; they are limited to moist, sheltered habitats with calcium in the soil. C. Economic Importance 1. Culturing of pearls and pearl buttons is an important industry. 2. Burrowing shipworms destroy wooden ships and wharves. 3. Snails and slugs are garden pests; some snails are intermediate hosts for parasites. D. Position in Animal Kingdom (see Inset, page 172) E. -
Proceedings of the Helminthological Society of Washington 49(2) 1982
I , , _ / ,' "T '- "/-_ J, . _. Volume 49 Jrily 1982;} Nufnber,2 \~-.\ .•'.' ''•-,- -• ;- - S "• . v-T /7, ' V. >= v.-"' " - . f "-< "'• '-.' '" J; PROCEEDINGS -. .-.•, • "*-. -. The Helmifltliological Society Washington :- ' ; "- ' A^siBmiohnua/ /ourna/ of research devofedVfp ^He/miiithoibgy and , a// branches of Parasi'fology in part by the ; r r;Brqytpn H.yRansom Memorial /Trust Fond TA'&'- -s^^>~J ••..''/'""', ':vSj ''--//;i -^v Subscription ^$18X)0 a Volume; Foreign, $19.00 AMIN, ,OwARr M. Adult Trematodes (Digenea) from Lake'Fishes ;6f Southeastern;Wisconsin, A with a Key to;Species ofvthe Genus Crleptdottomu/rt firwm, 1900 in-North America '_'.C-_~i-, 196- '•}AMIN, OMAR M. Two larval Trematodes'^Strigeoide^y^f fishes iri/Southeastern Wiscpnsin .:._ 207 AIMIN, OMARM. Description of Larval Acanthoctphajus parksidei Amin, 1975 (Acanthocephala: I A Echinorhynchidae) from Its iSopod Intermediate Host—i'.i.—_i.;—;-__-..-_-__-.—J....... 235 AMIN, PAIARM."and DONAL G.'My/ER. 'Paracreptbtrematina\timi gen.;et sp. inov. (Digenea: -. v Allocreadiidae) frohi-the Mudminnow, Umbra limi '.:'-._.2i_i-..__.^^.^i.., _— -____i_xS185 BAKER, M.i R. ,'On Two'Nevy Nie;matode Parasites (TnchOstrongyloidea: Molineidae) from f— , Amphibians;and Reptiles (...^d.-. -—._..-l.H— --^_./——.—.—.j- ^::l.._.___i__ 252 CAMPBELL, RONALD A:, STEVEN J- CORREIA, AND ;RIGHA»PTL. HAEPRJGH., A ,New Mbnor : • \ ^genean/and Cestode from'jthe Deep-Sea Fish, Macrourus berglax Lacepede, ;1802,' from jHe Flemish 'Cap off Newfoundland -u—— :.^..——u—^—-—^—y——i——~--———::-—:^ 169 vCAMPBELL, .RoNALp A. AND JOHN V.-^GARTNER, JR. "'Pistarta eutypharyifgis gen.\et sp. 'n.' , (', (Ceystoda: Pseudophyllidea)_from/;the Bathypelagic Gulper .Eel, ~Eurypharynx-pelecanoides ^.Vaillant, 1882, withiComments on Host arid Parasite Ecology -.:^-_r-::--—i—---_—L——I. -
Structure and Function of the Digestive System in Molluscs
Cell and Tissue Research (2019) 377:475–503 https://doi.org/10.1007/s00441-019-03085-9 REVIEW Structure and function of the digestive system in molluscs Alexandre Lobo-da-Cunha1,2 Received: 21 February 2019 /Accepted: 26 July 2019 /Published online: 2 September 2019 # Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract The phylum Mollusca is one of the largest and more diversified among metazoan phyla, comprising many thousand species living in ocean, freshwater and terrestrial ecosystems. Mollusc-feeding biology is highly diverse, including omnivorous grazers, herbivores, carnivorous scavengers and predators, and even some parasitic species. Consequently, their digestive system presents many adaptive variations. The digestive tract starting in the mouth consists of the buccal cavity, oesophagus, stomach and intestine ending in the anus. Several types of glands are associated, namely, oral and salivary glands, oesophageal glands, digestive gland and, in some cases, anal glands. The digestive gland is the largest and more important for digestion and nutrient absorption. The digestive system of each of the eight extant molluscan classes is reviewed, highlighting the most recent data available on histological, ultrastructural and functional aspects of tissues and cells involved in nutrient absorption, intracellular and extracellular digestion, with emphasis on glandular tissues. Keywords Digestive tract . Digestive gland . Salivary glands . Mollusca . Ultrastructure Introduction and visceral mass. The visceral mass is dorsally covered by the mantle tissues that frequently extend outwards to create a The phylum Mollusca is considered the second largest among flap around the body forming a space in between known as metazoans, surpassed only by the arthropods in a number of pallial or mantle cavity. -
Binder 156, Opecoelidae Plagioporinae O-Z [Trematoda Taxon Notebooks]
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Trematoda Taxon Notebooks Parasitology, Harold W. Manter Laboratory of July 2021 Binder 156, Opecoelidae Plagioporinae O-Z [Trematoda Taxon Notebooks] Harold W. Manter Laboratory of Parasitology Follow this and additional works at: https://digitalcommons.unl.edu/trematoda Part of the Biodiversity Commons, Parasitic Diseases Commons, and the Parasitology Commons Harold W. Manter Laboratory of Parasitology, "Binder 156, Opecoelidae Plagioporinae O-Z [Trematoda Taxon Notebooks]" (2021). Trematoda Taxon Notebooks. 152. https://digitalcommons.unl.edu/trematoda/152 This Portfolio is brought to you for free and open access by the Parasitology, Harold W. Manter Laboratory of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Trematoda Taxon Notebooks by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Opecoelidae ORTHODENA Durio & Manter, 1968 (;enerzc azagnos1s of Orthodena: Opecoclidae. Body oval-elongate. Acetabulum short distance anterior to midbody. Prepharynx short; pharynx strong; esophagus present; ceca diverging strongly, reaching to near posterior encl of body. Gonads symmetrical or nearly so, immediately posterior to acetabulum. Genital pore to left of midpharyngeal level. Uterus almost entirely posterior to gonads. Vitellaria folJicular, lateral, from level of cecal bifurcation to posterior end of body, tending to become confluent posterior to uterus. Seminal receptacle present. Excretory vesicle I-shaped. Type species: Orthodena tropica. Remarks This genus is most closely related to Plagio pon,s Stafford, 1904, and Pseudoplagioporus Yamaguti, 1938, differing in the location of the ovary directly to the right of the sym metrical testes. Thus, the three gonads lie in a straight line across the body inm- ediately posterior to the acetabulum. -
Digeneans (Trematoda) Parasitic in Freshwater Fishes (Osteichthyes) of the Lake Biwa Basin in Shiga Prefecture, Central Honshu, Japan
Digeneans (Trematoda) Parasitic in Freshwater Fishes (Osteichthyes) of the Lake Biwa Basin in Shiga Prefecture, Central Honshu, Japan Takeshi Shimazu1, Misako Urabe2 and Mark J. Grygier3 1 Nagano Prefectural College, 8–49–7 Miwa, Nagano City, Nagano 380–8525, Japan and 10486–2 Hotaka-Ariake, Azumino City, Nagano 399–8301, Japan E-mail: [email protected] 2 Department of Ecosystem Studies, School of Environmental Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone City, Shiga 522–8533, Japan 3 Lake Biwa Museum, 1091 Oroshimo, Kusatsu City, Shiga 525–0001, Japan Abstract: The fauna of adult digeneans (Trematoda) parasitic in freshwater fishes (Osteichthyes) from the Lake Biwa basin in Shiga Prefecture, central Honshu, Japan, is studied from the literature and existing specimens. Twenty-four previously known, 2 new, and 4 unidentified species in 17 gen- era and 12 families are recorded. Three dubious literature records are also mentioned. All 30 con- firmed species, except Sanguinicolidae gen. sp. (Aporocotylidae), are described and figured. Life cy- cles are discussed where known. Philopinna kawamutsu sp. nov. (Didymozoidae) was found in the connective tissue between the vertebrae and the air bladder near the esophagus of Nipponocypris tem- minckii (Temminck and Schlegel) (Cyprinidae). Genarchopsis yaritanago sp. nov. (Derogenidae) was found in the intestine of Tanakia lanceolata (Temminck and Schlegel) (Cyprinidae). Asymphylodora innominata (Faust, 1924) comb. nov. is proposed for A. macrostoma Ozaki, 1925 (Lissorchiidae). A key to the families, genera, and species of these digeneans is provided. Host-parasite and parasite- host lists are given. Key words: adult digeneans, Trematoda, parasites, morphology, life cycle, Philopinna kawamutsu sp. -
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43 ON SOME TASMANIAN PATELLIDyE. By the Rev. J. E. Tenison Woods, F.L.S., F.G.S. IBead 9ih May, 1876.] Our knowledge of Australian mollusca is almost confined to descriptions from the shells alone. Nearly all that we do know of the animals inhabiting the shells has been given to us by Messrs. Quoy and Gaimard in the voyage of the Astrolabe, where the plates as far as they go, leave but little to be desired. In the Nudibranchiate section Mr. G. F. Angas, F.L.S., etc., has done good service. But the greater part of the field remains untrodden. I propose in this paper to give a more detailed account than has yet appeared of the shells and animals of some Tasmanian Patellid^. I choose this family because it is the one in which a knowledge of the animal is most required to arrive at correct principles of classification. Limpets cannot be determined from the shell alone. The genera are classed according to the respiratory organs of the animal. These can only be told by a study of the habits of the animal, and by dissection. To both of these methods I have given lately some attention, and a part of my conclusions are embodied in the present paper. Before giving a glance at the character of the genera, let me state the principles which have guided me in the nomencla- ture. Conchology has recently increased its synonyms with a rapidity which is perfectly appalling. No naturalist can deprecate too strongly the practice of lightly changing a re- ceived name. -
Abstracts and Presenter Biographical Information Oral Presentations
ABSTRACTS AND PRESENTER BIOGRAPHICAL INFORMATION ORAL PRESENTATIONS Abstracts for oral presentations and biographical information for presenters are listed alphabetically below by presenting author’s last name. Abstracts and biographical information appear unmodified, as submitted by the corresponding authors. Day, time, and room number of presentation are also provided. Abatzoglou, John John Abatzoglou, Assistant Professor of Geography, University of Idaho. Research interests span the weather-climate continuum and both basic and applied scientific questions on past, present and future climate dynamics as well as their influence on wildfire, ecology and agriculture and is a key player in the development of integrated climate scenarios for the Pacific Northwest, US. Oral presentation, Wednesday, 2:30 PM, B114 Will climate change increase the occurrence of megafires in the western United States? The largest wildfires in the western United States account for a substantial portion of annual area burned and are associated with numerous direct and indirect geophysical impacts in addition to commandeering suppression resources and national attention. While substantial prior work has been devoted to understand the influence of climate, and weather on annual area burned, there has been limited effort to identify factors that enable and drive the very largest wildfires, or megafires. We hypothesize that antecedent climate and shorter-term biophysically relevant meteorological variables play an essen- tial role in favoring or deterring historical megafire occurrence identified using the Monitoring Trends in Burn Severity Atlas from 1984-2010. Antecedent climatic factors such as drought and winter and spring temperature were found to vary markedly across geographic areas, whereas regional commonality of prolonged extremely low fuel moisture and high fire danger prior to and immediately following megafire discovery. -
Digenean Parasites of Deep-Sea Teleosts a Progress Report
IJP: Parasites and Wildlife 12 (2020) 251–264 Contents lists available at ScienceDirect IJP: Parasites and Wildlife journal homepage: www.elsevier.com/locate/ijppaw Digenean parasites of deep-sea teleosts: A progress report T Rodney A. Bray Department of Life Sciences, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK ARTICLE INFO ABSTRACT Keywords: The developments in the study of digeneans of deep-sea fish in the 21st Century are documented and discussed. Deep-sea Most recent work has been on the bathyal fauna (i.e. 1,000m-2,999 m depth), with virtually nothing on the Digenea abyssal fauna (i.e. deeper than 3,000 m). The one study on hydrothermal vent digeneans has indicated that these Teleosts regions probably harbour a distinctive fauna. The demarcation of the deep-sea fauna is blurred at the poles, Abyss where the cold-adapted fauna appears similar to the shallower bathyal fauna. The abyssal fauna, however, Bathyal appears distinct, possibly due to adaptations to variable or ultra-high pressures. The digenean fauna of bath- Diversity ypelagic fishes is depauperate. Recent phylogenetic studies reinforce the view that the typical deep-sea faunahas radiated in the deep-sea. Encroachment into the deep from shallow water is relatively rare. Overall, the digenean fauna in the deep-sea is distinctly less diverse that the equivalent fauna in shallow waters. A major conclusion is that our understanding of the deep-sea digenean fauna is poor, and that much further work over a much wider area is needed. 1. Introduction the seabed as particulate organic carbon (POC) flux’ (Rex and Etter, 2010). -
Bulletin of the United States Fish Commission
A REVIEW OF THE CEPHALOPODS OF WESTERN NORTH AMERICA By S. Stillman Berry Stanford University, California Blank page retained for pagination A REVIEW OF THE CEPHALOPODS OF WESTERN NORTH AMERICA. By S. STILLMAN BERRY, Stanford University, California. J1. INTRODUCTION. "The region covered by the present report embraces the western shores of North America between Bering Strait on the north and the Coronado Islands on the south, together with the immediately adjacent waters of Bering Sea and the North Pacific Ocean. No attempt is made to present a monograph nor even a complete catalogue of the species now living within this area. The material now at hand is inadequate to properly repre sent the fauna of such a vast region, and the stations at which anything resembling extensive collecting has been done are far too few and scattered. Rather I have merely endeavored to bring out of chaos and present under one cover a resume of such work as has already been done, making the necessary corrections wherever possible, and adding accounts of such novelties as have been brought to my notice. Descriptions are given of all the species known to occur or reported from within our limits, and these have been made. as full and accurate as the facilities available to me would allow. I have hoped to do this in such a way that students, particularly in the Western States, will find it unnecessary to have continual access to the widely scattered and often unavailable literature on the subject. In a number of cases, however, the attitude adopted must be understood as little more than provisional in its nature, and more or less extensive revision is to be expected later, especially in the case of the large and difficult genus Polypus, which here attains a development scarcely to be sur passed anywhere. -
Turridae (Mollusca: Gastropoda) of Southern Africa and Mozambique
Ann. Natal Mus. Vol. 29(1) Pages 167-320 Pietermaritzburg May, 1988 Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 4. Subfamilies Drilliinae, Crassispirinae and Strictispirinae by R. N. Kilburn (Natal Museum, Pietermaritzburg) SYNOPSIS 71 species (42 previously undescribed) are covered: Drilliinae (33 species), Strictispirinae (3), Crassispirinae (35). New genera: Orrmaesia, Acinodrillia (Drilliinae); Inkinga (Strictispirinae); Naudedrillia, Nquma, Psittacodrillia, Calcatodrillia, Funa (Crassispirinae). New species: Drilliinae: Acinodrillia viscum, A. amazimba; Clavus groschi; Tylotiella isibopho, T. basipunctata, T. papi/io, T. herberti, T. sulekile, T. quadrata, Agladrillia ukuminxa, A. piscorum; Drillia (Drillia) spirostachys, D. (Clathrodrillia) connelli; Orrmaesia dorsicosta, O. nucella; Splendrillia mikrokamelos, S. kylix, S. alabastrum, S. skambos, S. sarda, S. daviesi. Crassispirinae: Crassiclava balteata; Inquisitor nodicostatus, /. arctatus, I. latiriformis, I. isabella, Funa fraterculus, F. asra; Naudedrillia filosa, N. perardua, N. cerea, N. angulata, N. nealyoungi, N. mitromorpha; Pseudexomilus fenestratus; Ceritoturris nataliae; Nquma scalpta; Haedropleura summa; Mauidrillia felina; Calcatodrillia chamaeleon, C. hololeukos; Buchema dichroma. New generic records: Clavus Montfort, 1810, Tylotiella Habe, 1958, Iredalea Oliver, 1915, Splendrillia Hedley, 1922, Agladrillia Woodring, 1928 (Drilliinae); Paradrillia Makiyama, 1940 (Strictispirinae); Crassiclava McLean, 1971, Pseudexomilus Powell, 1944, Haedropleura -
Guide to the Parasites of Fishes of Canada
Canadian Special Publication of Fisheries and Aquatic Sciences 124 Guide to the Parasites of Fishes of Canada Edited by L Margolis and Z Kabata 11111111illyellfill Part IV Trematoda David L Gibson m Department ori Fisheries & Orean's Library rAu°Anur 22 1996 Ministere cles Perches et Oceans des OTTAWA c 3 1 ( LF cJ GUIDE TO THE PARASITES OF FISHES OF CANADA PART IV NRC Monograph Publishing Program R.H Haynes, OC, FRSC (York University): Editor, Monograph Publishing Program Editorial Board: W.G.E. Caldwell, FRSC (University of Western Ontario); P.B. Cavers (University of Western Ontario); G. Herzberg, CC, FRS, FRSC (NRC, Steacie Institute of Molecular Sciences); K.U. IngoId, OC, FRS, FRSC, (NRC, Steacie Institute of Molecular Sciences); M. Lecours (Université Laval); L.P. Milligan, FRSC (University of Guelph); G.G.E. Scudder, FRSC (University of British Columbia); E.W. Taylor, FRS (University of Chicago); B.P. Dan- cik, Editor-in-Chief, NRC Research Journals and Monographs (University of Alberta) Publishing Office: M. Montgomery, Director General, CISTI; A. Holmes, Director, Publishing Directorate; G.J. Neville, Head, Monograph Publishing Program; E.M. Kidd, Publication Officer. Publication Proposals: Proposals for the NRC Monograph Publishing Program should be sent to Gerald J. Neville, Head, Monograph Publishing Program, National Research Council of Canada, NRC Research Press, 1200 Montreal Road, Building M-55, Ottawa, ON K 1 A 0R6, Canada. Telephone: (613) 993-1513; fax: (613) 952-7656; e-mail: gerry.nevi lie@ nrc.ca . © National Research Council of Canada 1996 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the National Research Council of Canada, Ottawa, Ontario KlA 0R6, Canada. -
Nematodes of the Order Dorylaimida from Andalucia Oriental, Spain
Fundam. appl. Nemawl., 1996,19 (5),481-497 Nematodes of the order Dorylaimida from Andalucia Oriental, Spain. The families Leptonchidae Thome, 1935 and Aulolaimoididae Jairajpuri, 1964 Manuel PERALTA and Reyes PENA SANTIAGO Universidad de Jaén, Deparlamenlo de Biologia Animal, Vegetal)' Ecologia. Virgen de la Cabeza nO 4, 23008Jaén, Spain. Accepted for publication 28 September 1995. Surmnary - ln this sixth paper of the series on lepranchid nematodes from Andalucia Oriental (Southeastern Spain) we present eigth previously known species belonging ra six different genera : Adenolaimus (Lepranchidae), Basirotylepws, FunarW, Lepwnchus, ProlepwlUhus and Meylis (AuJolairnoididae). Excepting for the twO species of Funana, descriptions, measurements and illustrations of the materia1 studied are given. Four species are new records ra the European fauna. Résumé - Nématodes de l'ordre des Dorylaimida d'Andalousie orientale, Espagne. Les familles Leptonchidae Thome, 1935et AulolaimoididaeJairajpuri, 1964- Ce sixième article de la série sur les nématodes Lepranchides d'Andalousie orientale (Espagne du sud-est) traite de huit espèces déjà décrites appartenant à six genres différents: Adenolaimus (Leptonchidae), Basirotyleptus, Funana, Lepwnchus, Prolepwnchus et Meylis (Aulolaimoididae). A l'exception des deux espèces de Funana, les descriptions, mensurations et illustrations du matériel étudié sont données. Quatre espèces sont nouvelles pour la faune européenne. Key-words : Adenolaimus, Andalucia Oriental, BasirotyleplUs, description, Ftmana, Lepwnchus, lv1.eylis, Proleptonchus, Spain, taxo nomy, nemarades. Nematodes of the family Leptonchidae have been on Leptonchus granulosus Cobb, 1920 ly recently found in Spain. Jiménez Millan el al. (1965, = LeplOnchus scintillans Loof, 1964 1967) and G6mez Barcina and Jiménez Millan (1967) (Fig. 1) recorded Xiphinemella sp. in severallocalities; however, this genus was not collected again during the last 20 MEASUREMENTS 30 years and we are not certain of its presence in the See Table 1.