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Onchidoris Bilamellata Class: Gastropoda, Opisthobranchia Order: Nudibranchia Many-Gilled Onchidoris Nudibranch Family: Onchidoridae
Phylum: Mollusca Onchidoris bilamellata Class: Gastropoda, Opisthobranchia Order: Nudibranchia Many-gilled onchidoris nudibranch Family: Onchidoridae Description Papillae: Mushroom-shaped, with protruding Size: Usual length 15 mm (McDonald 1980); spicules (Fig. 3). Numerous club-like this specimen 15.5 mm long, 11 mm wide, 6 tubercles of unequal size with a slight convex mm high. Far northern and Atlantic specimens top. 10-15 spicules covered with epithelium can reach 31 mm length (Marcus 1961). project out over the surface. Spicules are Color: Translucent brownish-white with thick with blunt tips and are centrally bent, irregular dark or rusty brown splotches, sloping obliquely toward the base of the sometimes as irregular longitudinal stripes. tubercle (Kress 1981). Spicules support the Commonly a light spot between the dark body and make it unpalatable (Potts 1981). rhinophores; gills dull white, underside a dull Eggs: Type A, defined as an egg mass in white (Marcus 1961). No yellow pigment, but ribbon form, attached along the length of one some specimens without brown color (Kozloff edge, with capsules occurring throughout 1974). Cryptic coloration (Potts 1981). (Hurst 1967). With a short, stout spiral ribbon Body Shape: Doridiform: oval; slightly attached along one edge, flaring out on the broadened towards front. With a broad flat other (O’Donoghue and O’Donoghue 1922) foot, thick fleshy mantle, and conspicuous (Fig. 5); capsules have a smooth wall and double circlet of gills dorsally (Figs. 1, 2). contain 1-3 eggs; 60,000 eggs in a ribbon 4 Dorsum covered with many large round cm long (Hadfield 1963). Eggs 100µm. Eggs papillae, becoming smaller at edges. -
The Recent Molluscan Marine Fauna of the Islas Galápagos
THE FESTIVUS ISSN 0738-9388 A publication of the San Diego Shell Club Volume XXIX December 4, 1997 Supplement The Recent Molluscan Marine Fauna of the Islas Galapagos Kirstie L. Kaiser Vol. XXIX: Supplement THE FESTIVUS Page i THE RECENT MOLLUSCAN MARINE FAUNA OF THE ISLAS GALApAGOS KIRSTIE L. KAISER Museum Associate, Los Angeles County Museum of Natural History, Los Angeles, California 90007, USA 4 December 1997 SiL jo Cover: Adapted from a painting by John Chancellor - H.M.S. Beagle in the Galapagos. “This reproduction is gifi from a Fine Art Limited Edition published by Alexander Gallery Publications Limited, Bristol, England.” Anon, QU Lf a - ‘S” / ^ ^ 1 Vol. XXIX Supplement THE FESTIVUS Page iii TABLE OF CONTENTS INTRODUCTION 1 MATERIALS AND METHODS 1 DISCUSSION 2 RESULTS 2 Table 1: Deep-Water Species 3 Table 2: Additions to the verified species list of Finet (1994b) 4 Table 3: Species listed as endemic by Finet (1994b) which are no longer restricted to the Galapagos .... 6 Table 4: Summary of annotated checklist of Galapagan mollusks 6 ACKNOWLEDGMENTS 6 LITERATURE CITED 7 APPENDIX 1: ANNOTATED CHECKLIST OF GALAPAGAN MOLLUSKS 17 APPENDIX 2: REJECTED SPECIES 47 INDEX TO TAXA 57 Vol. XXIX: Supplement THE FESTIVUS Page 1 THE RECENT MOLLUSCAN MARINE EAUNA OE THE ISLAS GALAPAGOS KIRSTIE L. KAISER' Museum Associate, Los Angeles County Museum of Natural History, Los Angeles, California 90007, USA Introduction marine mollusks (Appendix 2). The first list includes The marine mollusks of the Galapagos are of additional earlier citations, recent reported citings, interest to those who study eastern Pacific mollusks, taxonomic changes and confirmations of 31 species particularly because the Archipelago is far enough from previously listed as doubtful. -
Spinucella a New Genus of Miocene to Pleistocene , Muricid Gastropods from the Eastern Atlantic
Contr. Tert. Quatern. Geol. 30(1-2) 19-27 1 tab., 1 pi. Leiden, June 1993 Spinucella a new genus of Miocene to Pleistocene , muricid gastropods from the eastern Atlantic Geerat J. Vermeij University of California Davis, U.S.A. — new of Miocene Pleistocene muricid from the Atlantic. Contr. Tert. Vermeij, GeeratJ. Spinucella, a genus to gastropods eastern Quatern. Geol., 30(1-2): 19-27, 1 tab., 1 pi. Leiden, June 1993. The muricid is for de C. 1825 from the Pliocene of the new gastropod genus Spinucella proposed Purpura tetragonaJ. Sowerby, (type species), North Sea Basin, and for several other early Miocene to late Pleistocene species from southern Europe, North Africa, and southern Africa. The is characterised the of labral on the of the shell and reticulate of genus by presence a spine outer lip by sculpture. Species and Acanthinucella Cooke, 1918. The Spinucella closely resemble members ofNucella Röding, 1798, Acanthina Fischer von Waldheim, 1807, ofthat in the eastern Pacific Acanthina andAcanthinucella. Withthe removal of labral spine of Spinucellawas probably evolved independendy from where authors have the the time of arrival of Nucella in the North Atlantic from the S. tetragona Nucella, many recent placed species, North Pacific was late Pliocene, rather than middle Pliocene. — words Key Spinucella, new genus, Acanthina, Nucella, Neogene, biogeography. Prof. Dr G.J. Vermeij, Department of Geology, University of California, Davis, CA 95616, U.S.A. Contents 1956; Glibert, 1959, 1963). In fact, Glibert (1959) considered N. tetragona to be ancestral to N. lapillus, Introduction 19 p. the two species being linked by the late Pliocene 20 Systematics p. -
“Patrones Filogeográficos En El Gastrópodo Marino Acanthina
;6<=6 !"# $ %&'(()*+ ,##&- -. / $$023 4 56567 6 899:2 Agradecimientos Quiero agradecer a las personas que han aportado en mi formación de profesional y más como persona, y que han hecho que este proceso responda a mis expectativas y culmine de buena manera a través de la presente tesis de investigación. En primer lugar quiero agradecer de forma especial a mi núcleo familiar por su apoyo incondicional en todos mis actos (papá, mamá y Tania), destacando que en gran parte, gracias a ellos eh logrado cumplir este proceso como una de mis metas... a ellos dedico este trabajo y dedicare muchos mas. Por el lado académico agradecer y destacar a Leyla por ser la guía principal de mi tesis y en esta ultima etapa de formación como profesional ayudarme a desarrollar nuevas temáticas y actitudes personales, además mención especial para el espacio físico y apoyo logístico que me otorgo, y que permitieron el desarrollo de esta tesis de investigación, a Roger por su activa participación directa, como copatrocinante y en mis primeras asistencias a congresos, y a Antonio por sumarse a mi tesis, colaborando y mostrando siempre buena disposición a pesar de la distancia. También de cerca destaco el apoyo de mi polola (Katty), de mi círculo cercano de primos y mis amigos de barrio, y a mis compañeros de laboratorio: Daniela, Chalo, Jano y Zambra con los cuales afrontamos esta etapa en tiempos similares apoyándonos mutuamente. A todos... Gracias... 2 >; > 6 2 ! " # $%& " ' &"% ( "& ) &*%* +, -./""& -
Predator-Inducible Defences and Local Intrapopulation Variability of The
MARINE ECOLOGY PROGRESS SERIES Vol. 276: 115–123, 2004 Published August 2 Mar Ecol Prog Ser Predator-inducible defences and local intra- population variability of the intertidal mussel Semimytilus algosus in central Chile Andrés U. Caro, Juan Carlos Castilla* Center for Advanced Studies in Ecology & Biodiversity, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile ABSTRACT: Predator-inducible defences have a strong influence on the expression of morphological traits of intertidal invertebrates. For instance, mussels exposed to predators often have thicker shells than non-exposed. On the intertidal rocky shores of Chile, the mussel Semimytilus algosus is a pre- ferred prey of many carnivorous invertebrates, including the snails Nucella crassilabrum and Con- cholepas concholepas, and the crab Acanthocyclus gayi. Preliminary observations indicated that S. algosus exists as 2 morphotypes: a thick, smooth shell and a thinner, ringed shell. The thick-shell morphotype was found mostly on compact, rocky platforms, whereas the thin one was found on emer- gent rocks. We examined the role of invertebrate predators in determining the morphological differ- ences observed in S. algosus as a process of defence induction. The density and size of mussel preda- tors showed significant differences between habitats: A. gayi dominating the platforms and N. crassilabrum emergent rocks. C. concholepas did not show differences between habitats. Water- borne cue experiments demonstrated that the mussel shell thickness is increased by the presence of predators, especially A. gayi. Furthermore, in contrast to the other predators, A. gayi preferentially selects mussels of the thin-shell morphotype. We demonstrate the cause and effect connection between variation in mussel shell morphology in the laboratory and their associated spatial distribu- tion in the field, as well as the ecological role played by predators. -
OREGON ESTUARINE INVERTEBRATES an Illustrated Guide to the Common and Important Invertebrate Animals
OREGON ESTUARINE INVERTEBRATES An Illustrated Guide to the Common and Important Invertebrate Animals By Paul Rudy, Jr. Lynn Hay Rudy Oregon Institute of Marine Biology University of Oregon Charleston, Oregon 97420 Contract No. 79-111 Project Officer Jay F. Watson U.S. Fish and Wildlife Service 500 N.E. Multnomah Street Portland, Oregon 97232 Performed for National Coastal Ecosystems Team Office of Biological Services Fish and Wildlife Service U.S. Department of Interior Washington, D.C. 20240 Table of Contents Introduction CNIDARIA Hydrozoa Aequorea aequorea ................................................................ 6 Obelia longissima .................................................................. 8 Polyorchis penicillatus 10 Tubularia crocea ................................................................. 12 Anthozoa Anthopleura artemisia ................................. 14 Anthopleura elegantissima .................................................. 16 Haliplanella luciae .................................................................. 18 Nematostella vectensis ......................................................... 20 Metridium senile .................................................................... 22 NEMERTEA Amphiporus imparispinosus ................................................ 24 Carinoma mutabilis ................................................................ 26 Cerebratulus californiensis .................................................. 28 Lineus ruber ......................................................................... -
Are the Traditional Medical Uses of Muricidae Molluscs Substantiated by Their Pharmacological Properties and Bioactive Compounds?
Mar. Drugs 2015, 13, 5237-5275; doi:10.3390/md13085237 OPEN ACCESS marine drugs ISSN 1660-3397 www.mdpi.com/journal/marinedrugs Review Are the Traditional Medical Uses of Muricidae Molluscs Substantiated by Their Pharmacological Properties and Bioactive Compounds? Kirsten Benkendorff 1,*, David Rudd 2, Bijayalakshmi Devi Nongmaithem 1, Lei Liu 3, Fiona Young 4,5, Vicki Edwards 4,5, Cathy Avila 6 and Catherine A. Abbott 2,5 1 Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, G.P.O. Box 157, Lismore, NSW 2480, Australia; E-Mail: [email protected] 2 School of Biological Sciences, Flinders University, G.P.O. Box 2100, Adelaide 5001, Australia; E-Mails: [email protected] (D.R.); [email protected] (C.A.A.) 3 Southern Cross Plant Science, Southern Cross University, G.P.O. Box 157, Lismore, NSW 2480, Australia; E-Mail: [email protected] 4 Medical Biotechnology, Flinders University, G.P.O. Box 2100, Adelaide 5001, Australia; E-Mails: [email protected] (F.Y.); [email protected] (V.E.) 5 Flinders Centre for Innovation in Cancer, Flinders University, G.P.O. Box 2100, Adelaide 5001, Australia 6 School of Health Science, Southern Cross University, G.P.O. Box 157, Lismore, NSW 2480, Australia; E-Mail: [email protected] * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +61-2-8201-3577. Academic Editor: Peer B. Jacobson Received: 2 July 2015 / Accepted: 7 August 2015 / Published: 18 August 2015 Abstract: Marine molluscs from the family Muricidae hold great potential for development as a source of therapeutically useful compounds. -
Pleistocene Molluscs from the Namaqualand Coast
ANNALS OF THE SOUTH AFRICAN MUSEUM ANNALE VAN DIE SUID-AFRIKAANSE MUSEUM Volume 52 Band July 1969 Julie Part 9 Dee! PLEISTOCENE MOLLUSCS FROM THE NAMAQUALAND COAST By A.J.CARRINGTON & B.F.KENSLEY are issued in parts at irregular intervals as material becomes available Obtainable from the South African Museum, P.O. Box 61, Cape Town word uitgegee in dele opongereelde tye na beskikbaarheid van stof OUT OF PRINT/UIT nRUK I, 2(1, 3, 5, 7-8), 3(1-2, 5, t.-p.i.), 5(2, 5, 7-9), 6(1, t.-p.i.), 7(1, 3), 8, 9(1-2), 10(1-3), 11(1-2, 7, t.-p.i.), 21, 24(2), 27, 31(1-3), 38, 44(4)· Price of this part/Prys van hierdie deel Rg.oo Trustees of the South African Museum © 1969 Printed in South Africa by In Suid-Afrika gedruk deur The Rustica Press, Pty., Ltd. Die Rustica-pers, Edms., Bpk. Court Road, Wynberg, Cape Courtweg, Wynberg, Kaap By A. ]. CARRINGTON & B. F. KENSLEY South African Museum, Cape Town (With plates 18 to 29 and I I figures) PAGE Introduction 189 Succession 190 Systematic discussion. 191 Acknowledgements 222 Summary. 222 References 223 INTRODUCTION In the course of an examination of the Tertiary to Recent sediments of the Namaqualand coast, being carried out by one of the authors (A.].C.), a collection of fossil molluscs was assembled from the Pleistocene horizons encountered in the area. The purpose of this paper is to introduce and describe some twenty species from this collection, including forms new to the South Mrican palaeontological literature. -
Imposex in Endemic Volutid from Northeast Brazil (Mollusca: Gastropoda)
1065 Vol. 51, n. 5 : pp.1065-1069, September-October 2008 BRAZILIAN ARCHIVES OF ISSN 1516-8913 Printed in Brazil BIOLOGY AND TECHNOLOGY AN INTERNATIONAL JOURNAL Imposex in Endemic Volutid from Northeast Brazil (Mollusca: Gastropoda) Ítalo Braga de Castro 1*, Carlos Augusto Oliveira de Meirelles 2,3 , Helena Matthews- Cascon 2,3 ,. Cristina de Almeida Rocha-Barreira 2, Pablo Penchaszadeh 4 and Gregório Bigatti 5 1Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática; Fundação Universidade Federal do Rio Grande; C. P.: 474; [email protected]; 96201-900; Rio Grande - RS -Brasil. 2Laboratório de Zoobentos; Instituto de Ciências do Mar; Fortaleza - Ceará - Brasil. 3Laboratório de Invertebrados Marinhos; Departamento de Biologia; Universidade Federal do Ceará; Fortaleza - CE - Brasil. 4Universidade de Buenos Aires; Buenos Aires - Argentina. 5Centro Nacional Patagónico, Puerto Madryn - Chubut - Argentina ABSTRACT Imposex is characterized by the development of masculine sexual organs in neogastropod females. Almost 120 mollusk species are known to present imposex when exposed to organic tin compounds as tributyltin (TBT) and triphenyltin (TPT). These compounds are used as biocide agents in antifouling paints to prevent the incrustations on boats. Five gastropod species are known to present imposex in Brazil: Stramonita haemastoma, Stramonita rustica, Leucozonia nassa, Cymathium parthenopeum and Olivancillaria vesica. This paper reports the first record of imposex observed in the endemic gastropod Voluta ebraea from Pacheco Beach, Northeast Brazil. Animals presenting imposex had regular female reproductive organs (capsule gland, oviduct and sperm-ingesting gland) and an abnormal penis. As imposex occurs in mollusks exposed to organotin compounds typically found at harbors, marinas, shipyards and areas with high shipping activities, probably contamination of Pacheco Beach is a consequence of a shipyard activity located in the nearest areas. -
FAU Institutional Repository
FAU Institutional Repository http://purl.fcla.edu/fau/fauir This paper was submitted by the faculty of FAU’s Harbor Branch Oceanographic Institute. Notice: ©1986 Marine Biological Laboratory. The final published version of this manuscript is available at http://www.biolbull.org/. This article may be cited as: Young, C. M., Greenwood, P. G. & Powell, C. J. (1986). The ecological role of defensive secretions in the intertidal pulmonate Onchidella borealis. The Biological Bulletin, 171(2), 391‐404. Reference:BioLBulL171:391—404.(October,1986) THE ECOLOGICAL ROLE OF DEFENSIVE SECRETIONS IN THE INTERTIDAL PULMONATE ONCHIDELLA BOREALIS CRAIG M. YOUNG', PAUL G. GREENWOOD@,AND CYNTHIAJ. POWELL3 Friday HarborLaboratories, 620 UniversityRd., Friday Harbor, Washington 98250 andBamfieldMarineStation, Bamfield, British Columbia VORJBO,Canada ABSTRACT Repugnatorial glands located in the marginal papillae of the intertidal ochidiid pulmonate Onchidella borealis secrete a viscous fluid in response to mechanical or chemical stimulation. In laboratory encounters, this fluid repels intertidal predatory asteroids, particularly Leptasterias hexactis, but not predatory gastropods, polyclad turbellarians, nemerteans, or fishes. Intertidal crabs consume dead 0. borealis readily, but seldom consume living individuals capable of firing their glands. The vertical range of 0. borealis overlaps that of L. hexactis, whereas limpets that are vulnerable to predation by the sea stars generally live higher on the shore. On a small scale, 0. borealis and L. hexactis occupy similar microhabitats (e.g., crevices, algal holdfasts), but are seldom found together. Field and laboratory experiments suggest that this negative spatial correlation may result from expulsion of the sea stars by onchidiids. INTRODUCTION Many marine gastropods lacking protective shells have evolved alternative de fenses such as incorporation of cnidarian nematocysts, distasteful chemicals, and aposematic or cryptic coloration. -
Gastropoda:Muricidae
The malacologicalsocietymalacological society of Japan Jeur. Malac,) fi re VENUS {Jap. - Vol, 5z No. 3 ( l99g): 2e9 223 Originand Biogeographic History of Ceratostoma (Gastropoda: Muricidae) Kazutaka AMANo and Geerat J. VERMEIJ of943ofGeoscience. Jbetsu Uhiversity oj' EZIucation. i2xmayashiki-1. Jbetsu, MigataDqpartmentPrellercture, -85i2 Japan, and Department of Geolegy and Center for Population Uitiversity Calijbrnia at Davis, One Shields Avenue, Davis, CA 95616 USABiology Abstract: We examined the two Neogene species of the ocenebrine muricid gastropod genus Ceratostoma Herrmannsen, 1846, from Japan and North Korea, namely, C. makiyamai The (Hatai & Kotaka, 1952) and C. sp,, both from the early middle Miecene. genus Ceratostotna is divisible into fouT groups based on C. nuttalli (Conrad), C. virginiae (Maury), C, fotiatum (Gemelin), and C. rorijIuum (Adams & Reeve). Three Miocene species from Kamehatka assigned by Russian workers to Ceratostoma are difficult to evaluate owing to poor preservation. Purpura turris Nomland, from the Pliecene of California, which was assigned to Ceratostoma by earlicr authors, is here tentatively assigned to Crassilabrum Jousseaume, 1880, have arisen the the early Miocene, it The genus Ceratostoma may in Atlantic. By had reached California, and then spTead westward to northeast Asia by earLy middle Mio- Miocene ccne time. This pattern of east to west expansion during the early half of the also characterizes many other north-temperate marine genera, including the ocenebrine NiiceUa. Keywords: origin, biogeography, Ceratostoma, Muricidae Introduction muricid Ceratostoma liye in shallow Recent species of the ocenebrine gastropod genus waters on both sides of the temperate and boreal North Pacific. There are six living species: C nuttaUi (Conrad) from California and Baja California, C. -
The Ultrastructure and Histology of the Perinotal Epidermis and Defensive Glands of Two Species of Onchidella (Gastropoda: Pulmonata)
Tissue and Cell 42 (2010) 105–115 Contents lists available at ScienceDirect Tissue and Cell journal homepage: www.elsevier.com/locate/tice The ultrastructure and histology of the perinotal epidermis and defensive glands of two species of Onchidella (Gastropoda: Pulmonata) S.C. Pinchuck ∗, A.N. Hodgson Department of Zoology and Entomology and the Electron Microscope Unit, Rhodes University, P.O. Box 94, Grahamstown 6140, Eastern Cape, South Africa article info abstract Article history: Histology and electron microscopy were used to describe and compare the structure of the perinotal epi- Received 16 November 2009 dermis and defensive glands of two species of shell-less marine Systellommatophora, Onchidella capensis Received in revised form 29 January 2010 and Onchidella hildae (Onchidiidae). The notum of both species is composed of a layer of epithelial and Accepted 1 February 2010 goblet cells covered by a multi-layered cuticle. Large perinotal multi-cellular glands, that produce thick Available online 6 March 2010 white sticky mucus when irritated, are located within the sub-epidermal tissue. The glands are composed of several types of large secretory cell filled with products that stain for acidic, sulphated and neutral Keywords: mucins, and some irregularly shaped support cells that surround a central lumen. The products of the Systellommatophora Onchidiidae secretory cells are produced by organelles that are basal in position. The entire gland is surrounded by Mucins a well-developed capsule of smooth muscle and collagen, and in addition smooth muscle surrounds the Notum cells within the glands. Based on the size of the gland cells, their staining properties, and the appearance of their stored secretions at the transmission electron microscope level, five different types of secretory cells were identified in O.