DOCSLIB.ORG

<I>Sabellastarte Magnifica</I>

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
<I>Sabellastarte Magnifica</I> FEEDING AND TUBE-BUILDING IN SABELLASTARTE MAGNIFICll (SHAW) (SABELLIDAE:POLYCHAETA) GAIL FITZSIMONS Bellairs Research Institute of McGill University, St. James, Barbados, West Indies ABSTRACT The branchial crown of Sabellastarte magnifica (Shaw) acts as a filtra- tion device for trapping particles in suspension in the sea water. The anatomy of the branchial crown, the mechanism of collecting and sorting particles, and the method of utilizing the particles for feeding and tube- building are studied. The general chemical nature of the tube is described. INTRODUCTION Sabellastarte magnifica (Shaw) is a common West Indian littoral Sabel- lid polychaete. The literature on this species is restricted almost exclusively to faunal records and descriptions of the external morphology. Sabellastarte magnifica has been recorded from the Bahamas (Andrew & Andrew, 1953), Jamaica (Shaw, 1800; Schmarda, 1861; Augener, 1922; Marsden, 1960), Haiti (Augener, 1922), St. Thomas (Augener, 1922, 1925), St. Croix (Augener, 1922, 1925), Antigua (Mullin, 1923; Treadwell, 1924), Guadeloupe (Kinberg, 1867), Barbados (Augener, 1922; Marsden, 1960), Isla de Margarita (Monro, 1933), and Cura<;ao (Augener, 1927). It has also been found along eastern Mexico (Augener, 1922; Rioja, 1946; Hartman, 1951), on the Caribbean coast of Panama (Monro, 1933), and on the northern coast of South America, off Venezuela and Surinam (Augener, 1922). Most of the faunal records noted above include descriptions of the external morphology. Mullin's (1923) paper contains the only report on internal anatomy to be found in the literature on this species. She describes the digestive system, the septa, and the muscular, circulatory, nervous, and excretory systems. Mullin was not able to identify the reproductive system and concluded that it probably consists of gonads that are inconspicuous except during breeding. The only detailed account of feeding and tube-building in any Sabellid is found in Nicol's (1930) paper on Sabella pavonina. Comparisons will be drawn between Nicol's description of Sabella pavon ina and the obser- vations on Sabellastarte magnifica. The nomenclature of Nicol has been followed in considering the orientation of the filaments and pinnules. The surface toward the centre of the branchial funnel is designated as the frontal face, that towards the outside of the funnel the abfrontal face, and those to the sides the lateral faces. Sabellastarte magnifica belongs to the subfamily Sabellinae of the family Sabellidae and is morphologically a typical Sabellid. The typical full-sized 1965] Fitzsimons: Feeding and Tube-Building in Sabellastarte magnifica 643 Sabel/astarte magnifica in Barbados is about 130-160 mm long, including the branchial crown. The branchial crown usually constitutes one-half to three-quarters of the total body length. The crown spread is approximately 102-127 mm. The body is thickset, about 12 mm across and of uniform width, except at the posterior end where the last 20-25 segments taper to a blunt point. The body is dorsally convex and ventrally flattened. There are 8 thoracic segments. The number of abdominal segments is variable, usually about 125 to 150. As in all Sabellids, the two processes of feeding and tube-building are closely interrelated in Sabel/astarte magnifica. For both processes the worm utilizes particulate material in suspension in the surrounding sea water. The branchial crown is the particle-collecting mechanism. The work was supported by a grant from the National Research Council of Canada. I am grateful to Dr. John B. Lewis for his advice and encour- agement. EXPLANA nON OF LETTERING A.-abfrontal cilia folds A.C.-anastomosing cells in skeletal I.B.P.-inner edge of basal piece sheath J.-bending joint of pinnule B.D.L.-base of dorsal lip L.-Iatero-frontal cilia B.F.-basal fold L.BR.F.-Iower branchial filament B.G.-basal groove L.C.G.F.-Iongitudinal ciliated groove B.GR.-basal granules of filament B.L.L.-base of lateral lip L.L.-Iateral lip BR.F.-branchial filament L.M.P.-longitudinal muscles of B.V.BR.F.-blood vessel of branchial pinnule filament L.R.B.F.-longitudinal ridge of B.Y.P.-blood vessel of pinnule basal fold B.Y.PP.-blood vessel of palp L.R.D.L.-Iongitudinal ridge of B.W.-basal web dorsal lip C.-canal for basal branchial blood L.R.L.L.-Iongitudinal ridge of vessel lateral lip C.G.M.-ciliated groove leading to M.-mouth mouth M.c.-mucous cell c.G.V.S.-ciliated groove leading to N.C.-nucleus of ciliated cell ventral sac N.E.C.-nucleus of epidermal cell CU.-cuticle N.L.M.F.-nucleus of longitudinal D.L.-dorsal lip muscle fiber D.P.-dorsal pit O.B.P.-outer edge of basal piece D.P.C.F.-dorsal peristomial collar P.-pinnule fold P.c.-penetrating cell of epidermis E.-epidermis P.F.-'-parallel fold E.C.-epidermal cell PP.-palp E.G.E.-elevated glandular epidermis R.D.L.-rim of dorsal lip F.-frontal cilia R.L.L.-rim of lateral lip F.G.P.-frontal groove of pinnule S.A.B.P.-skeletal axis of basal piece G.-groove between the bases of the S.A.BR.F.-skeletal axis of branchial branchial filaments and the lateral filament lip S.A.P.-skeletal axis of pinnule G.P.F.-groove between the parallel ,S.A.PP.-skeletal axis of palp 644 Bulletin of Marine Science [15(3) S.R.PP.-supporting skeletal rod ciliated groove of palp V.P.c.P.-ventral peristomial S.S.A.-sheath of skeletal axis collar fold U.BR.P.-upper branchial filament V.S.-ventral sac V.L.C.G.-ventrallongitudinal W.-web joining the paired palps FEEDING Methods.-lt was possible to keep Sabel/astarte magnifica, in good condition, for about two weeks in concrete laboratory aquaria through which sea water was continually circulated. After about two weeks, however, the worms began to lose their muscular tone and reactivity and to spontaneously autotomize their branchial crowns. Only specimens freshly taken from the sea were used in studying the feeding process. The most satisfactory method of study was found to be that used by Nicol for Sabella pavonina. The worm, still in its own tube, was placed inside a glass tube of slightly greater diameter. This was placed in a jar filled with fresh sea water and was supported and adjusted to any position desired by means of wire loops. The observations were made with a binocular dissecting microscope and also with a fluorescent lamp equipped with a magnifying glass window. The finer details of the ciliary tracts were studied by examining excised portions of the feeding apparatus placed in sea water under high power magnification. The ciliary tracts were also examined by staining unfixed portions of the feeding apparatus with Noland's (Pantin, 1948) stain which stains cilia bright pink. Noland's stain stopped the movement of the cilia. Small particles present in the sea water usually made the currents visible. When necessary, various particulate substances, such as carmine powder, Sira rouge powder, finely ground carborundum, sand grains, and starch grains stained with iodine, were placed on or near the branchial crown. In studying the anatomy of the branchial region, both fresh and pre- served specimens were used. The formalin-ethanol preservation method recommended by Marr (1962) for polychaetes was found to give the best results. The detailed structure of the crown was studied by cutting IOfL serial sections in the longitudinal and transverse planes. The material was fixed in Duboscq-Brasil (Nicol, 1930), embedded in paraffin and stained in Heidenhain's hematoxylin and eosin. Anatomy of the branchial region.- The branchial crown is very showy and occurs in a wide variety of colors. The branchial filaments are colored in shades of brown with several series of paler spots forming bands. The most frequent color combinations are fuscous brown banded with light tan spots, chocolate brown banded with white, dark purple with brown spots, and dark mahogany red banded with light brown. Some crowns are 1965] Fitzsimons: Feeding and Tube-Building in Sabel/astarte magnifica 645 A B.F. B.f o B c FIGURE 1. The branchial crown of Sabellastarte magnifica. A. Anterior view of the inside of the branchial crown with the filaments fully spread; the fila- ments have been cut off at their bases, the pinnules are not shown and the dorsal lips are shown pulled towards the mid-line. B. Ventral extremity of the right lateral lip. C. Frontal view of three branchial filaments; the pinnules of the lower filament are not shown. D. Abfrontal view of five branchial filaments. 646 Bulletin ot Marine Science [15(3) almost white with indistinct barring, like watered silk (Hartman, 1951). Figure lA shows an anterior view of the branchial region with the crown fully expanded. The prostomium is very compressed and bears the following structures on its anterior surface: two paired palps, two paired ventral sacs, a mouth, a pair of lateral lips, a pair of dorsal lips, and a branchial crown. The branchial crown consists of two semicircular stems, one on each side of the anterior face of the prostomium. The two stems are connected on the dorsal side but are separate on the ventral side. Anteriorly, the two stems branch out into numerous filaments. The filaments vary in number in different individuals but are approximately the same number on both sides of the crown. In a full-sized specimen there are about 50-60 filaments on each side. The filaments are less numerous in smaller worms. The filaments are united for the first 3 mm of their length by a thin basal web (B.W., Fig. 1A) running round the abfrontal face of the crown base, but distal to this they are entirely separate.
Load more

Recommended publications
  • Alien Marine Invertebrates of Hawaii
    POLYCHAETE Sabellastarte spectabilis (Grube, 1878) Featherduster worm, Fan worm Phylum Annelida Class Polychaeta Family Sabellidae DESCRIPTION HABITAT This large species attains 80 mm or more in length and Abundant on Oahu’s south shore reefs, and in Pearl 10 to 12 mm in width. The entire body of the worm is Harbor and Kaneohe Bay at shallow depths, especially buff colored with flecks of purple pigment. These in dredged areas that receive silt-laden waters. Also worms inhabit tough, leathery tubes covered with fine found in pockets and crevices in the reef flat. It is mud. Radioles (branched tentacles) lack stylodes especially abundant along the edges of reefs that have (small finger-like projections on the tentacles of some been dredged, as at Ala Moana and Fort Kamehameha, sabellids) and eyespots and are patterned with dark Oahu; it may be an indicator of waters with high brown and buff bands. There is a pair of long, slender sediment content (Bailey-Brock, 1976). Reported from palps and a 4-lobed collar. These worms are very a wide variety of coastal habitats (e.g., in holes, crev- conspicuous on reef flats and harbor structures because ices, and matted algae at outer reef edges of rocky of their large size and banded pattern of the branchial shores, from interstices of the coral Pocillopora crowns (from Bailey-Brock, 1987). meandrina; from under boulders in quiet water, in crevices in lava, in open coast tide pools, and from tidal channels exposed to heavy surf). DISTRIBUTION HAWAIIAN ISLANDS Shallow water throughout main islands NATIVE RANGE AB Red Sea and Indo-Pacific PRESENT DISTRIBUTION Sabellistarte spectabilis.
    [Show full text]
  • Evidence for Sequential Hermaphroditism in Sabellastarte Spectabilis (Polychaeta: Sabellidae) in Hawai‘I1
    Evidence for Sequential Hermaphroditism in Sabellastarte spectabilis (Polychaeta: Sabellidae) in Hawai‘i1 David R. Bybee,2,4 Julie H. Bailey-Brock,2 and Clyde S. Tamaru3 Abstract: Understanding the reproductive characteristics of Sabellastarte specta- bilis (Grube, 1878), an economically important polychaete worm collected for the aquarium trade, is essential to the development of artificial propagation and conservation of coral reefs. The purpose of this study was to determine whether S. spectabilis is hermaphroditic. Using histological techniques, 180 indi- viduals were examined for gametes. Gametes were present only in abdominal segments. Primary oocytes were 7–8 mm in diameter in histologically prepared sections. Sperm appeared as round black dots about 2 mm in diameter on histo- logically prepared slides. Most individuals sampled had only one type of gamete in the coelom, but both eggs and sperm were seen in the coelom of 15% of individuals, demonstrating the occurrence of hermaphroditism in Hawaiian populations of S. spectabilis. The sex ratio of males to females was skewed signif- icantly toward males in both the small (6–8 mm diameter) and medium (9–10 mm diameter) sized worms. Among the largest worms (11–13 mm diameter), the sex ratio did not diverge significantly from 1:1. There was a significantly higher proportion of hermaphrodites (30%) in the large size class. Worms of unknown gender, although present in all size classes examined, were most fre- quent (33%) in the medium size class. These patterns are consistent with se- quential (protandrous) hermaphroditism. The sabellid polychaete Sabellastarte pal collection site for this commercially im- spectabilis (Grube, 1878) is common in bays portant ornamental species (Walsh et al.
    [Show full text]
  • Final Report)
    Aquaculture of Hawaiian Marine Invertebrates for the Marine Ornamental Trade, Year 2 General Information Reporting Period October 1, 2003–September 30, 2004 (final report) Funding Level Year Amount 1 $55,000 2 $35,000 TOTAL $90,000 Participants Clyde Tamaru, Ph.D., Extension Specialist Sea Grant Extension Service David Bybee, Graduate Student University of Hawaii at Manoa Julie Bailey-Brock, Ph.D., Professor University of Hawaii at Manoa Tom Ogawa, Research Assistant Oceanic Institute David Ziemann, Ph.D., Technical Director Fisheries and Environmental Science, Oceanic Institute Ethan Morgan, Research Technician Oceanic Institute December 2004 1 Marine Invertebrates Objectives Develop and transfer culture techniques for Hawaiian marine invertebrates to promote economic opportunities without dependence on wild-caught specimens. 1. Determine the feeding requirements for broodstock maturation. 2. Determine methods for the artificial spawning of feather duster worms. 3. Validate grow-out phase in natural and artificial systems. 4. Determine estimated costs for the settled feather dusters to attain market size. 5. Summarize and disseminate the resulting information in journal articles, newsletter articles, and workshops. Principal Accomplishments Objective 1: Determine the feeding requirements for broodstock maturation. At OI, three different potential food types (Nannochloropsis, Chaetoceros, and pond water) were tested at three different volumes (10, 100, and 1,000 ml). Three replicate tanks (ca. 75 L each) per treatment volume for each food type tested were stocked with four wild-collected animals. Animals in control tanks were given the treatment volumes using clean seawater. A total of 36 tanks were maintained for each treatment period. Egg barriers were installed in each tank to capture any spawns that may have occurred during the treatment period.
    [Show full text]
  • Polychaete Worms Definitions and Keys to the Orders, Families and Genera
    THE POLYCHAETE WORMS DEFINITIONS AND KEYS TO THE ORDERS, FAMILIES AND GENERA THE POLYCHAETE WORMS Definitions and Keys to the Orders, Families and Genera By Kristian Fauchald NATURAL HISTORY MUSEUM OF LOS ANGELES COUNTY In Conjunction With THE ALLAN HANCOCK FOUNDATION UNIVERSITY OF SOUTHERN CALIFORNIA Science Series 28 February 3, 1977 TABLE OF CONTENTS PREFACE vii ACKNOWLEDGMENTS ix INTRODUCTION 1 CHARACTERS USED TO DEFINE HIGHER TAXA 2 CLASSIFICATION OF POLYCHAETES 7 ORDERS OF POLYCHAETES 9 KEY TO FAMILIES 9 ORDER ORBINIIDA 14 ORDER CTENODRILIDA 19 ORDER PSAMMODRILIDA 20 ORDER COSSURIDA 21 ORDER SPIONIDA 21 ORDER CAPITELLIDA 31 ORDER OPHELIIDA 41 ORDER PHYLLODOCIDA 45 ORDER AMPHINOMIDA 100 ORDER SPINTHERIDA 103 ORDER EUNICIDA 104 ORDER STERNASPIDA 114 ORDER OWENIIDA 114 ORDER FLABELLIGERIDA 115 ORDER FAUVELIOPSIDA 117 ORDER TEREBELLIDA 118 ORDER SABELLIDA 135 FIVE "ARCHIANNELIDAN" FAMILIES 152 GLOSSARY 156 LITERATURE CITED 161 INDEX 180 Preface THE STUDY of polychaetes used to be a leisurely I apologize to my fellow polychaete workers for occupation, practised calmly and slowly, and introducing a complex superstructure in a group which the presence of these worms hardly ever pene- so far has been remarkably innocent of such frills. A trated the consciousness of any but the small group great number of very sound partial schemes have been of invertebrate zoologists and phylogenetlcists inter- suggested from time to time. These have been only ested in annulated creatures. This is hardly the case partially considered. The discussion is complex enough any longer. without the inclusion of speculations as to how each Studies of marine benthos have demonstrated that author would have completed his or her scheme, pro- these animals may be wholly dominant both in num- vided that he or she had had the evidence and inclina- bers of species and in numbers of specimens.
    [Show full text]
  • Guide to Theecological Systemsof Puerto Rico
    United States Department of Agriculture Guide to the Forest Service Ecological Systems International Institute of Tropical Forestry of Puerto Rico General Technical Report IITF-GTR-35 June 2009 Gary L. Miller and Ariel E. Lugo The Forest Service of the U.S. Department of Agriculture is dedicated to the principle of multiple use management of the Nation’s forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the National Forests and national grasslands, it strives—as directed by Congress—to provide increasingly greater service to a growing Nation. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable sex, marital status, familial status, parental status, religion, sexual orientation genetic information, political beliefs, reprisal, or because all or part of an individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720-2600 (voice and TDD).To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W. Washington, DC 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. Authors Gary L. Miller is a professor, University of North Carolina, Environmental Studies, One University Heights, Asheville, NC 28804-3299.
    [Show full text]
  • Larval Development of Sabellastarte Spectabilis (Grube, 1878) (Polychaeta: Sabellidae) in Hawaiian Waters
    SCIENTIFIC ADVANCES IN POLYCHAETE SCIENTIA MARINA 70S3 RESEARCH December 2006, 279-286, Barcelona (Spain) R. Sardá, G. San Martín, E. López, D. Martin ISSN: 0214-8358 and D. George (eds.) Larval development of Sabellastarte spectabilis (Grube, 1878) (Polychaeta: Sabellidae) in Hawaiian waters DAVID R. BYBEE 1, JULIE H. BAILEY-BROCK 2 and CLYDE S. TAMARU 3 1 Department of Zoology, University of Hawaii at Manoa, Honolulu, Hawaii, USA. E-mail: [email protected] 2 Department of Zoology, University of Hawaii at Manoa, Honolulu, Hawaii, USA. 3 College Sea Grant Program, University of Hawaii at Manoa, Honolulu, Hawaii, USA. SUMMARY: The sabellid polychaete Sabellastarte spectabilis is common in bays and harbours throughout Hawaii. It has become one of the most harvested marine ornamental species in the State. Collection can be difficult and potentially dam- aging to the reef community. Understanding the reproduction and life history of this polychaete will benefit the marine orna- mental trade by facilitating aquaculture of the species and coral reef conservation by decreasing destructive collecting prac- tices. There is very little known about the biology of this species. Experiments were conducted at the Hawaii Institute of Marine Biology to induce and document spawning and larval development. Oocytes range between 150-200 μm in diame- ter and sperm have spherical heads. Cell division in fertilized eggs begins approximately twenty minutes after spawning. Developmental stages were documented using light and scanning electron microscopy. Swimming larvae are first seen 7-8 h after spawning. Larvae have a well-developed prototroch and a less conspicuous neurotroch and metatroch. Two chaetigers develop sequentially on days 4 and 5 and settlement occurs 6-7 days after spawning.
    [Show full text]
  • Marine Biodiversity in India
    MARINEMARINE BIODIVERSITYBIODIVERSITY ININ INDIAINDIA MARINE BIODIVERSITY IN INDIA Venkataraman K, Raghunathan C, Raghuraman R, Sreeraj CR Zoological Survey of India CITATION Venkataraman K, Raghunathan C, Raghuraman R, Sreeraj CR; 2012. Marine Biodiversity : 1-164 (Published by the Director, Zool. Surv. India, Kolkata) Published : May, 2012 ISBN 978-81-8171-307-0 © Govt. of India, 2012 Printing of Publication Supported by NBA Published at the Publication Division by the Director, Zoological Survey of India, M-Block, New Alipore, Kolkata-700 053 Printed at Calcutta Repro Graphics, Kolkata-700 006. ht³[eg siJ rJrJ";t Œtr"fUhK NATIONAL BIODIVERSITY AUTHORITY Cth;Govt. ofmhfUth India ztp. ctÖtf]UíK rvmwvtxe yÆgG Dr. Balakrishna Pisupati Chairman FOREWORD The marine ecosystem is home to the richest and most diverse faunal and floral communities. India has a coastline of 8,118 km, with an exclusive economic zone (EEZ) of 2.02 million sq km and a continental shelf area of 468,000 sq km, spread across 10 coastal States and seven Union Territories, including the islands of Andaman and Nicobar and Lakshadweep. Indian coastal waters are extremely diverse attributing to the geomorphologic and climatic variations along the coast. The coastal and marine habitat includes near shore, gulf waters, creeks, tidal flats, mud flats, coastal dunes, mangroves, marshes, wetlands, seaweed and seagrass beds, deltaic plains, estuaries, lagoons and coral reefs. There are four major coral reef areas in India-along the coasts of the Andaman and Nicobar group of islands, the Lakshadweep group of islands, the Gulf of Mannar and the Gulf of Kachchh . The Andaman and Nicobar group is the richest in terms of diversity.
    [Show full text]
  • Establishing Species and Species Boundaries in Sabellastarte Krøyer, 1856 (Annelida: Sabellidae): an Integrative Approach
    Org Divers Evol (2010) 10:351–371 DOI 10.1007/s13127-010-0033-z ORIGINAL ARTICLE Establishing species and species boundaries in Sabellastarte Krøyer, 1856 (Annelida: Sabellidae): an integrative approach María Capa & David R. Bybee & Seth M. Bybee Received: 29 March 2010 /Accepted: 20 September 2010 /Published online: 6 October 2010 # Gesellschaft für Biologische Systematik 2010 Abstract Sabellastarte Krøyer, 1856 (Sabellidae), a mor- species boundaries and diagnostic features, the distribution phologically homogeneous group distributed in warm and of some of those lineages can be explained by the presence temperate coasts of the Indo-Pacific and Caribbean Sea, is of cryptic species and potential introductions. characterized by the presence of a unique combination of features. To date, the genus comprises eight species, but Keywords Sabellastarte . Sabellidae . Annelida . Integrative morphological characters traditionally used in diagnostics taxonomy. Morphology. Mitochondrial DNA have shown intra-specific variability, making species boundaries and distributions unclear. The present study constitutes the first attempt to test the monophyly of Introduction Sabellastarte and its relationships to other sabellid genera by combining molecular (COI and 16S) and morphological The genus Sabellastarte Krøyer, 1856 is a morphologically data. Results include placement of a clade containing homogeneous group of fan worms (Sabellidae) distributed Stylomma, Sabella, Branchiomma and Bispira as the sister in warm and temperate coasts of the Indo-Pacific and group to Sabellastarte. Phylogenetic analyses and genetic Caribbean Sea. These worms are well known among divers divergence among specimens from several localities around and aquarists due to their attractive and colorful branchial the world indicate the presence of at least six lineages crown, which can measure up to 10 cm in diameter within Sabellastarte.
    [Show full text]
  • Program & Abstracts
    IPC13 Program & Abstracts 1 Table of Contents Section Pages Welcome 2 Major Sponsors 3 Meeting Code of Conduct 4 Meeting Venue 5 Restaurants 6 Getting to and from Downtown Long Beach 7-8 Presentation Information 9 Overview of the Schedule 10 Detailed Schedule of Events 11-15 List of Poster Presentations 16-22 Abstracts: Oral Presentations 23-37 Abstracts: Poster Presentations 38-58 List of IPC13 Participants 59-64 Notes 65-67 Colleagues Recently Lost 68 2 Welcome from IPC13 Organizing Committee Greetings Polychaete Colleagues, On behalf of the Organizing Committee, welcome to sunny Southern California, the RMS Queen Mary, and the 13th International Polychaete Conference! We hope that your travel to Long Beach was pleasant and that you are ready for five days of enlightening programs and time spent with friends and colleagues. In 1989, IPC3 took place in Long Beach, organized by Dr. Donald Reish. In 2015, Don approached us to ask if it might be possible to bring IPC13 back to Long Beach, thirty years later. We agreed to work towards that goal, and in 2016 the attendees of IPC12 in Wales selected Long Beach as the venue for the next meeting. Unfortunately, Don did not live to see his dream become a reality, but his passion for all facets of polychaete biology is represented in this conference through the broad diversity of presentations that are offered. We know that he would be very pleased and honored by your participation in this meeting. The conference would not have been possible without your support and participation. In addition, we would like to express sincere thanks to those organizations that have supported the conference, either financially or by other critical means.
    [Show full text]
  • Sabellids (Polychaeta: Sabellidae) from the Grand Caribbean María Ana Tovar-Hernández* and Sergio I
    Zoological Studies 45(1): 24-66 (2006) Sabellids (Polychaeta: Sabellidae) from the Grand Caribbean María Ana Tovar-Hernández* and Sergio I. Salazar-Vallejo Laboratorio de poliquetos, El Colegio de la Frontera Sur, Av. Centenario Km. 5.5, C. P. 77900, Chetumal, Quintana Roo, Méxi co (Accepted September 3, 2005) María Ana Tovar-Hernández and Sergio I. Salazar-Vallejo (2006) Sabellids (Polychaeta: Sabellidae) from the Grand Caribbean. Zoological Studies 45(1): 24-66. A taxonomic key for the 40 valid species of sabellids (Polychaeta: Sabellidae) occurring in the Grand Caribbean is provided. Eighteen species are herein recorded from the Grand Caribbean, and 4 species new to science are described: Anamobaea phyllisae sp. nov. (Guana Island), Bispira paraporifera sp. nov. (Mexican Caribbean), Megalomma perkinsi sp. nov. (Florida), and Pseudopotamilla fitzhughi sp. nov. (Mexican Caribbean). Identifications were corroborated by comparisons with type and non-type material loaned from several museums. An annotated checklist of the sabellid polychaetes from the Grand Caribbean is provided, including type localities, museums where material is deposited, and tax- onomic remarks whenever necessary. The checklist comprises 56 species, of which 13 remain as questionable records, either because there is no type material, their records are isolated, or their type localities are far away from the Grand Caribbean. By presenting a complete overview of all records for sabellids in the area, this work summarizes our current knowledge of the diversity of this polychaete family in the Grand Caribbean, providing baseline data for future research. http://zoolstud.sinica.edu.tw/Journals/45.1/24.pdf Key words: Fan worms, Key, Checklist, New species.
    [Show full text]
  • Fan Worms (Annelida: Sabellidae) from Indonesia Collected by the Snellius II Expedition (1984) with Descriptions of Three New Species and Tube Microstructure
    Title: Fan worms (Annelida: Sabellidae) from Indonesia collected by the Snellius II Expedition (1984) with descriptions of three new species and tube microstructure Author: María Ana Tovar-Hernández, Harry A. Ten Hove, Olev Vinn, Michał Zatoń, Jesús Angel de León-González, María Elena García-Garza Citation style: Tovar-Hernández María Ana, Ten Hove Harry A., Vinn Olev, Zatoń Michał, de León-González Jesús Angel, García-Garza María Elena. (2020). Fan worms (Annelida: Sabellidae) from Indonesia collected by the Snellius II Expedition (1984) with descriptions of three new species and tube microstructure. "PeerJ" (Vol. 8 (2020), art. no. 9692, s. 1-72), DOI:10.7717/peerj.9692 Fan worms (Annelida: Sabellidae) from Indonesia collected by the Snellius II Expedition (1984) with descriptions of three new species and tube microstructure María Ana Tovar-Hernández1, Harry A. ten Hove2, Olev Vinn3, Micha1 Zaton4, Jesús Angel de León-González1 and María Elena García-Garza1 1 Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Biosistemática, San Nicolás de los Garza, Nuevo León, Mexico 2 Naturalis Biodiversity Center, Leiden, The Netherlands 3 Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia 4 Institute of Earth Sciences, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland ABSTRACT The Indonesian archipelago is one of the most diverse regions in the marine World. Many contributions on polychaete worms have been published since the Dutch Siboga Expedition to the Indonesian archipelago at the end of the 19th century. In this study, we examined specimens of Sabellidae Latreille, 1825 collected during the Snellius II Expedition (1984) to Indonesia, carried out by the Dutch Research Vessel (RV) “Tyro” and the Indonesian RV “Samudera”.
    [Show full text]
  • Sabellastarte Spectabilis (Grube, 1878)
    Sabellastarte spectabilis (Grube, 1878) Item Type Images/Video Authors Ketabi, Ramin; Jamili, Shahla Publisher Tehran University, Kish International Campus; Iranian Fisheries Science Research Institute Download date 23/09/2021 18:55:31 Link to Item http://hdl.handle.net/1834/9468 Sabellastarte spectabilis (Grube, 1878) Kingdom: Animalia Family: Sabellidae Phylum: Annelida Genus: Sabellastarte Class: Polychaeta Species: S. spectabilis Order: Sabellida Sabellastarte spectabilis is commonly known as the feather duster worm, feather duster or fan worm. It has reported for the first time from Iranian waters (Kish Island) and finding in the intertidal and subtidal reefs. Especially common in sites where phytoplankton is abundant. The worm's body occupies a flexible mucus tube formed by adhesion of silt from the water column. Polychaetes, or marine bristle worms, have elongated bodies divided into many segments. Each segment may bear setae (bristles) and parapodia (paddle-like appendages). Some species live freely, either swimming, crawling or burrowing, and these are known as "errant". Others live permanently in tubes, either calcareous or parchment-like, and these are known Photo By: Ramin Ketabi, Tehran Univ. Kish Inter. Camp., Iran as "sedentary". This large worm can reach 80 millimeters in length and 10–12 Editor:Shahla Jamili, Iran Fish. Sci. Res. Inst. (AREOO), Iran millimeters in width. It is buff in color with purple specks. It lives in a tough, leathery tube covered with fine mud. The tentacles are striped in dark and pale brown bands and bear neither stylodes nor eye spots. There are two long, slender palps and a four-lobed collar. Cilia on the tentacles cause currents in the water and organic particles are caught as they float past.
    [Show full text]