Velutina Schneideri (Friele, 1886, )

Total Page：16

File Type：pdf, Size：1020Kb

Arctic Megabenthos Velutina schneideri (Friele, 1886, ) Phylum: Mollusca Class: Gastropoda Order: Littorinimorpha Family: Velutinidae Genus: Velutina Description. Shell broadly ear-shaped, with 2.5 convex rounded whorls and deeply impressed suture. Spire projects slightly above last whorl. Protoconch one-whorled, uncovered by periostracum. Last whorl moderately convex. Peri¬ostracum yellow or light brown, less developed than calcareous layer, occasion¬ally obsolete on spiral surface. Sculpture of frequently disposed growth lines crossing spiral ribs. The latter not only present on periostracum but also on calcareous layer. Riblets vary greatly in number and frequency. Last whorl usually with 12-22 riblets with intervals near shell edge exceeding their width by 2-4 times. Aperture roundly oval, with thickened edge because of periostracum. Calcareous lining of aperture bluish-white, opaque. Measurements. Largest seen specimen: height 8.8 mm, length 15.5 mm, width 13.5 mm. Remarks. - Because of great variability most investigators consider this species synonymous with V. (V.) velutina. In typical V.(V.) schneideri, riblets are delicate and disposed at intervals 4-5 times their width and not exceeding 20 in number; occasionally they are not well developed. Specimens morphologically similar to V.(V.) velutina have wider riblets, and intervals exceed the width 2-3 times. Periostracum usually is better developed. The shape of penis easily distinguish the species. In V.(V.) schneideri it is wide and flattened at the base, terminating into a pointed long flagellated appendage. In V.(V.) velutina, penis is in form of a broad cylinder bordered by wide folds at the end. Distribution. Greenland, the Norwegian, Barents, Kara, Laptev and East Siber¬ian Seas as well as North Kurile Strait. Since many authors unite V. (V) schneideri with V.(V.) velutina, the area of distribution of V.(V.) schneideri given in the present paper is apparently provisional. Ecology. The species occurs at depths from 7 to 350 m, most common at 100¬150 m, and prefering muddy sand with stone substrata. Literature ● Gulbin V.V., Golikov A.N. A review of the prosobranch family Velutinidae in cold and temperate waters of the Northern Hemisphere. III. Velutininae. Genera Ciliatovelutina and Velutina Author: Zakharov Denis V. / 13.02.2017 Last edit: Zakharov Denis V. / 07.03.2017.

Copy Link

Recommended publications

The Limpet Form in Gastropods: Evolution, Distribution, and Implications for the Comparative Study of History
UC Davis UC Davis Previously Published Works Title The limpet form in gastropods: Evolution, distribution, and implications for the comparative study of history Permalink https://escholarship.org/uc/item/8p93f8z8 Journal Biological Journal of the Linnean Society, 120(1) ISSN 0024-4066 Author Vermeij, GJ Publication Date 2017 DOI 10.1111/bij.12883 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Biological Journal of the Linnean Society, 2016, , – . With 1 ﬁgure. Biological Journal of the Linnean Society, 2017, 120 , 22–37. With 1 figures 2 G. J. VERMEIJ A B The limpet form in gastropods: evolution, distribution, and implications for the comparative study of history GEERAT J. VERMEIJ* Department of Earth and Planetary Science, University of California, Davis, Davis, CA,USA C D Received 19 April 2015; revised 30 June 2016; accepted for publication 30 June 2016 The limpet form – a cap-shaped or slipper-shaped univalved shell – convergently evolved in many gastropod lineages, but questions remain about when, how often, and under which circumstances it originated. Except for some predation-resistant limpets in shallow-water marine environments, limpets are not well adapted to intense competition and predation, leading to the prediction that they originated in refugial habitats where exposure to predators and competitors is low. A survey of fossil and living limpets indicates that the limpet form evolved independently in at least 54 lineages, with particularly frequent origins in early-diverging gastropod clades, as well as in Neritimorpha and Heterobranchia. There are at least 14 origins in freshwater and 10 in the deep sea, E F with known times ranging from the Cambrian to the Neogene.
[Show full text]
An Annotated Checklist of the Marine Macroinvertebrates of Alaska David T
NOAA Professional Paper NMFS 19 An annotated checklist of the marine macroinvertebrates of Alaska David T. Drumm • Katherine P. Maslenikov Robert Van Syoc • James W. Orr • Robert R. Lauth Duane E. Stevenson • Theodore W. Pietsch November 2016 U.S. Department of Commerce NOAA Professional Penny Pritzker Secretary of Commerce National Oceanic Papers NMFS and Atmospheric Administration Kathryn D. Sullivan Scientific Editor* Administrator Richard Langton National Marine National Marine Fisheries Service Fisheries Service Northeast Fisheries Science Center Maine Field Station Eileen Sobeck 17 Godfrey Drive, Suite 1 Assistant Administrator Orono, Maine 04473 for Fisheries Associate Editor Kathryn Dennis National Marine Fisheries Service Office of Science and Technology Economics and Social Analysis Division 1845 Wasp Blvd., Bldg. 178 Honolulu, Hawaii 96818 Managing Editor Shelley Arenas National Marine Fisheries Service Scientific Publications Office 7600 Sand Point Way NE Seattle, Washington 98115 Editorial Committee Ann C. Matarese National Marine Fisheries Service James W. Orr National Marine Fisheries Service The NOAA Professional Paper NMFS (ISSN 1931-4590) series is pub- lished by the Scientific Publications Of- *Bruce Mundy (PIFSC) was Scientific Editor during the fice, National Marine Fisheries Service, scientific editing and preparation of this report. NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. The Secretary of Commerce has The NOAA Professional Paper NMFS series carries peer-reviewed, lengthy original determined that the publication of research reports, taxonomic keys, species synopses, flora and fauna studies, and data- this series is necessary in the transac- intensive reports on investigations in fishery science, engineering, and economics. tion of the public business required by law of this Department.
[Show full text]
Marine Ecology Progress Series 228:153
MARINE ECOLOGY PROGRESS SERIES Vol. 228: 153–163, 2002 Published March 6 Mar Ecol Prog Ser Carnivore/non-carnivore ratios in northeastern Pacific marine gastropods James W. Valentine1,*, Kaustuv Roy2, David Jablonski3 1Department of Integrative Biology and Museum of Paleontology, University of California, Berkeley, California 94720, USA 2Ecology, Behavior and Evolution Section, Division of Biology, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093-0116, USA 3Department of Geophysical Sciences, University of Chicago, 5734 Ellis Avenue, Chicago, Illinois 60637, USA ABSTRACT: For 2321 species of shelled gastropods of the northeastern Pacific, the ratio of carnivo- rous to non-carnivorous species (C/NC ratio), computed for each degree of latitude, reveals striking spatial changes, with tropical and arctic areas characterized by high values and with the mid- latitudes having the lowest ratios. This latitudinal trend is markedly different from trends for terres- trial clades. The zonal variation in C/NC ratios within bins is largely due to differences in geographic ranges of the groups; for example, tropical carnivorous species range farther than non-carnivorous ones, thus overlapping them in more latitudinal bins. Differences in the distribution and diversity of carnivorous and non-carnivorous species may arise from a number of sources, including variability of primary production in the tropical eastern Pacific, patchiness of substrates to which non-carnivores are adapted, narrow dietary specializations of tropical carnivores, and higher provinciality found in extratropical regions. KEY WORDS: Trophic ratios · Latitudinal diversity trends · Provinciality · Variable productivity Resale or republication not permitted without written consent of the publisher INTRODUCTION diversities (Faaborg 1985, Jeffries & Lawton 1985, Karr et al.
[Show full text]
Caenogastropoda
13 Caenogastropoda Winston F. Ponder, Donald J. Colgan, John M. Healy, Alexander Nützel, Luiz R. L. Simone, and Ellen E. Strong Caenogastropods comprise about 60% of living Many caenogastropods are well-known gastropod species and include a large number marine snails and include the Littorinidae (peri- of ecologically and commercially important winkles), Cypraeidae (cowries), Cerithiidae (creep- marine families. They have undergone an ers), Calyptraeidae (slipper limpets), Tonnidae extraordinary adaptive radiation, resulting in (tuns), Cassidae (helmet shells), Ranellidae (tri- considerable morphological, ecological, physi- tons), Strombidae (strombs), Naticidae (moon ological, and behavioral diversity. There is a snails), Muricidae (rock shells, oyster drills, etc.), wide array of often convergent shell morpholo- Volutidae (balers, etc.), Mitridae (miters), Buccin- gies (Figure 13.1), with the typically coiled shell idae (whelks), Terebridae (augers), and Conidae being tall-spired to globose or fl attened, with (cones). There are also well-known freshwater some uncoiled or limpet-like and others with families such as the Viviparidae, Thiaridae, and the shells reduced or, rarely, lost. There are Hydrobiidae and a few terrestrial groups, nota- also considerable modifi cations to the head- bly the Cyclophoroidea. foot and mantle through the group (Figure 13.2) Although there are no reliable estimates and major dietary specializations. It is our aim of named species, living caenogastropods are in this chapter to review the phylogeny of this one of the most diverse metazoan clades. Most group, with emphasis on the areas of expertise families are marine, and many (e.g., Strombidae, of the authors. Cypraeidae, Ovulidae, Cerithiopsidae, Triphori- The fi rst records of undisputed caenogastro- dae, Olividae, Mitridae, Costellariidae, Tereb- pods are from the middle and upper Paleozoic, ridae, Turridae, Conidae) have large numbers and there were signifi cant radiations during the of tropical taxa.
[Show full text]
An Amphipod Hiding in the Mantle of Coriocella Hibyae (Gastropoda
Reef sites Shrimps with a coat: an amphipod hiding in the mantle of Coriocella hibyae (Gastropoda, Velutinidae) Amphipods can live in association with a variety of molluscs, mostly bivalves, and in a few cases are found in proximity of nudibranchs, mimicking the general appearance of the gastropods (Vader and Tandberg 2013). Here, we report a previously unknown behaviour of an amphipod associated with the lamellarian gas- tropod Coriocella hibyae (Fig. 1a), observed around Magoodhoo Island, Faafu Atoll, Maldives (3.067°N, 72.950°E) in March 2018. The amphipod was always found lying on its back (Fig. 1b). Specifically, it laid with the dorsal portion of the body in contact with the gastropod and used the thoracic legs to cling to the host (Fig. 1c). Subsequently, it pushed against the mantle of C. hibyae, burrowing itself in the soft body of the gas- tropod by bringing the thoracic legs close together (Fig. 1d), as shown in the video in the Electronic Sup- plementary Material. This behaviour allowed the am- phipod to completely hide itself (Fig. 1e), probably finding a safe shelter from predators. This, together with the strong cytotoxic activity of secondary metabolites present in Coriocella species (Cantrell et al. 1999) and likely useful in deterring predation, make the gastropod an ideal refuge for the crustacean. To our knowledge, our findings represent the first report of an association between Coriocella hibyae and other organisms. No- tably, the unique behaviour here described was never observed before and provides new insights into the hiding strategies of amphipods. References Cantrell CL, Groweiss A, Gustafson KR, Boyd MR (1999) A new staurosporine analog from the prosobranch mollusk Coriocella nigra.
[Show full text]
Patterns of Genome Size Diversity in Invertebrates
PATTERNS OF GENOME SIZE DIVERSITY IN INVERTEBRATES: CASE STUDIES ON BUTTERFLIES AND MOLLUSCS A Thesis Presented to The Faculty of Graduate Studies of The University of Guelph by PAOLA DIAS PORTO PIEROSSI In partial fulfilment of requirements For the degree of Master of Science April, 2011 © Paola Dias Porto Pierossi, 2011 Library and Archives Bibliotheque et 1*1 Canada Archives Canada Published Heritage Direction du Branch Patrimoine de I'edition 395 Wellington Street 395, rue Wellington Ottawa ON K1A 0N4 Ottawa ON K1A 0N4 Canada Canada Your file Votre reference ISBN: 978-0-494-82784-0 Our file Notre reference ISBN: 978-0-494-82784-0 NOTICE: AVIS: The author has granted a non L'auteur a accorde une licence non exclusive exclusive license allowing Library and permettant a la Bibliotheque et Archives Archives Canada to reproduce, Canada de reproduire, publier, archiver, publish, archive, preserve, conserve, sauvegarder, conserver, transmettre au public communicate to the public by par telecommunication ou par I'lnternet, preter, telecommunication or on the Internet, distribuer et vendre des theses partout dans le loan, distribute and sell theses monde, a des fins commerciales ou autres, sur worldwide, for commercial or non support microforme, papier, electronique et/ou commercial purposes, in microform, autres formats. paper, electronic and/or any other formats. The author retains copyright L'auteur conserve la propriete du droit d'auteur ownership and moral rights in this et des droits moraux qui protege cette these. Ni thesis. Neither the thesis nor la these ni des extraits substantiels de celle-ci substantial extracts from it may be ne doivent etre imprimes ou autrement printed or otherwise reproduced reproduits sans son autorisation.
[Show full text]
Gastropoda: Velutinidae), a Specialist Predator of Ascidians
Canadian Journal of Zoology The life history and feeding ecology of velvet shell, Velutina velutina (Gastropoda: Velutinidae), a specialist predator of ascidians Journal: Canadian Journal of Zoology Manuscript ID cjz-2018-0327.R1 Manuscript Type: Article Date Submitted by the 03-Jun-2019 Author: Complete List of Authors: Sargent, Philip; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada Hamel, Jean-Francois; Society for the Exploration and Valuing of the EnvironmentDraft Mercier, Annie; Memorial University of Newfoundland, Ocean Sciences Is your manuscript invited for consideration in a Special Not applicable (regular submission) Issue?: Velutina velutina, velvet shell, velutinid, gastropod, invasive species, Keyword: specialist predator, ascidian https://mc06.manuscriptcentral.com/cjz-pubs Page 1 of 42 Canadian Journal of Zoology 1 The life history and feeding ecology of velvet shell, Velutina velutina (Gastropoda: Velutinidae), a specialist predator of ascidians P. S. Sargent*, J-F. Hamel, and A. Mercier P. S. Sargent1 Department of Ocean Sciences, Memorial University, St. John’s (Newfoundland and Labrador) Canada A1C 5S7 Email: [email protected] J-F Hamel Society for the Exploration and ValuingDraft of the Environment (SEVE), Portugal Cove-St. Philips (Newfoundland and Labrador) Canada A1M 2B7 Email: [email protected] A. Mercier Department of Ocean Sciences, Memorial University, St. John’s (Newfoundland and Labrador) Canada A1C 5S7 Email: [email protected] * Corresponding Author: Philip S. Sargent Department of Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, 80 East White Hills Road, St. John’s, Newfoundland and Labrador, Canada, A1C 4N1 Email: [email protected] Phone: 1 (709) 772-4278 Fax: 1 (709) 772-5315 1 Current Contact Information for P.
[Show full text]
Epifaunal Community Response to Iceberg-Mediated Environmental Change in Mcmurdo Sound, Antarctica
The following supplement accompanies the article Epifaunal community response to iceberg-mediated environmental change in McMurdo Sound, Antarctica Stacy Kim*, Kamille Hammerstrom, Paul Dayton *Corresponding author: [email protected] Marine Ecology Progress Series 613: 1–14 (2019) Figure' S1.' ' Representative' example' seafloor' images' from' each' site.' Dates' were:' Cape'Armitage'21'October'2008C'Jetty'11'November'2014C'Jetty'North'26'October' 2004C'Road'10'November'2014CTransition'14'November'2014C'Outfall'South'B'29' October' 2008C' Outfall' South' A' 30' October' 2008C' Outfall' 30' October' 2008C' WQB' Outer'4'November'2012C'WQB'Middle'19'November'2007C'WQB'Inner'30'October' 2012C'Cinder'Cones'18'November'2008C'Turtle'Rock'24'October'2012C'Cape'Evans' 30' October' 2002C' Cape' Royds' 6' December' 2007C' Horseshoe' Bay' 1' December' 2004C'Cape'Chocolate'28'October'2004C'Explorers'Cove'12'November'2008C'Cape' Bernacchi'15'November'2004.' 1 Figure'S2.''Dendrogram'of'SIMPROF'results'for'all'sites'and'times.''Abbreviations' are' two' digit' years,' followed' by' two' character' station' designations' as' in' Figure' 2,' followed' by' replicate' number.' Red' dashed' lines' indicate' groupings' of' indistinY guishable'samplesC'boxes'delineate'groupings'West,'Chemical,'East,'Temporal,'and' Organic.' 2 Figure' S3.' ' Representative' example' images' of' dominant' taxa' (per' Table' 3),' plus' Beggiatoa.''A.'Odontaster-validus.'B.'Sterechinus-neumayeri.'C.'Ophionotus-victoria.' D.- Laternula- elliptica.- E.' Adamussium- colbecki.'
[Show full text]
The Biodiversity of Marine Gastropods of Thailand in the Late Decade
Malaysian Journal of Science 32 (SCS Sp Issue) : 47-64 (2013) The Biodiversity of Marine Gastropods of Thailand in the Late Decade. Kitithorn Sanpanich1*and Teerapong Duangdee2 1Institute of Marine Science, Burapha University, Tambon Saensook, Amphur Moengchonburi, Chonburi, 20131 Thailand. 2Department of Marine Science, Faculty of Fisheries, Kasetsart University, Bangkok, 10900 Thailand. *[email protected] (Corresponding author) ABSTRACT This study is mainly based on the collection of marine gastropods along the east coast of the Gulf of Thailand which had been carried out along the coastline in 55 sites from the province of Chonburi to Trad during April 2005 – December 2009. As many habitats as possible were examined at each sites from sandy beaches, muddy sand, rocky shore, and coral reefs. A total of 306 species of gastropods were collected and had been classiﬁ ed in53families 116genera.The most widespread species were Planaxis sulcatus (Planaxidae) and Polinices mammilla (Naticidae) found in 37 sites, followed by Echinolittorina malaccana (Littorinidae) in 35 sites. The highest diversity was 187 species in Trat whereas Koh Mark had the most abundance in this area. The lowest diversity was in Chanthaburi, 88 species, whereas Koh Nomsoa was the most abundant site.The diversity of gastropods in Chonburi was 152 species, whereas Koh Samaesarn and Koh Juang were the most abundant site. 137 species had been found in Rayong and Koh Munnai was the most abundant site. The data from this study had been compared with the resent studies in the late decade from the west coast of the Gulf of Thailand and Andaman Sea.The total gastropods in the late decade were 454 species 205 genera 69 families.
[Show full text]
Checklist of the Mollusca of Cocos (Keeling) / Christmas Island Ecoregion
RAFFLES BULLETIN OF ZOOLOGY 2014 RAFFLES BULLETIN OF ZOOLOGY Supplement No. 30: 313–375 Date of publication: 25 December 2014 http://zoobank.org/urn:lsid:zoobank.org:pub:52341BDF-BF85-42A3-B1E9-44DADC011634 Checklist of the Mollusca of Cocos (Keeling) / Christmas Island ecoregion Siong Kiat Tan* & Martyn E. Y. Low Abstract. An annotated checklist of the Mollusca from the Australian Indian Ocean Territories (IOT) of Christmas Island (Indian Ocean) and the Cocos (Keeling) Islands is presented. The checklist combines data from all previous studies and new material collected during the recent Christmas Island Expeditions organised by the Lee Kong Chian Natural History Museum (formerly the Raffles Museum of Biodiversty Resarch), Singapore. The checklist provides an overview of the diversity of the malacofauna occurring in the Cocos (Keeling) / Christmas Island ecoregion. A total of 1,178 species representing 165 families are documented, with 760 (in 130 families) and 757 (in 126 families) species recorded from Christmas Island and the Cocos (Keeling) Islands, respectively. Forty-five species (or 3.8%) of these species are endemic to the Australian IOT. Fifty-seven molluscan records for this ecoregion are herein published for the first time. We also briefly discuss historical patterns of discovery and endemism in the malacofauna of the Australian IOT. Key words. Mollusca, Polyplacophora, Bivalvia, Gastropoda, Christmas Island, Cocos (Keeling) Islands, Indian Ocean INTRODUCTION The Cocos (Keeling) Islands, which comprise North Keeling Island (a single island atoll) and the South Keeling Christmas Island (Indian Ocean) (hereafter CI) and the Cocos Islands (an atoll consisting of more than 20 islets including (Keeling) Islands (hereafter CK) comprise the Australian Horsburgh Island, West Island, Direction Island, Home Indian Ocean Territories (IOT).
[Show full text]
Includes Abstracts of the
Number 65 (August 2015) The Malacologist Page 1 NUMBER 65 AUGUST 2015 Contents EDITORIAL …………………………….. ............................2 ANNUAL GENERAL MEETING—SPRING 2015 Annual Report of Council ...........................................................21 NOTICES ………………………………………………….2 Election of officers ………………………………………….....24 RESEARCH GRANT REPORTS Molecular phylogeny of Chaetodermomorpha (=Caudofoveata) EUROMOL CONFERENCE Programme in retrospect ……………………………………….….25 (Mollusca). Conference Abstracts - Oral presentations………………….....26 Nina Mikkelsen …………………………….………………..4 - Poster presentations ……………...…..53 The Caribbean shipworm Teredothyra dominicensis (Bivalvia, Teredinidae) has invaded and established breeding populations FORTHCOMING MEETINGS …………………………….…..... 72 in the Mediterranean Sea. Molluscan Forum .......................................................................72 J. Reuben Shipway, Luisa Borges, Johann Müller GRANTS AND AWARDS OF THE SOCIETY.............................76 & Simon Cragg ……………………………………………….7 MEMBERSHIP NOTICES ………………………………………....77 ANNUAL AWARD Evolution of chloroplast sequestration in Sacoglossa (Gastropoda, Heterobranchia) Gregor Christa ...……………………………………………....10 AGM CONFERENCE Programme in retrospect Planktic Gastropods ……………...….12 Conference Abstracts - Oral presentations………………….....13 - Poster presentations …………….....…18 Includes abstracts of the .. Images from The heart of a dragon: extraordinary circulatory system of the scaly-foot gastropod revealed Chong Chen, Jonathan Copley, Katrin Linse,
[Show full text]
Velutina Velutina ((OF Müller, 1776), )
Arctic Megabenthos Velutina velutina ((O. F. Müller, 1776), ) Phylum: Mollusca Class: Gastropoda Order: Littorinimorpha Family: Velutinidae Genus: Velutina Synonyms: Velutina laevigata (O. F. Müller, 1777), Velutina laevigata (Linnaeus, 1758) Description. - Shell with 3 convex rounded whorls, deeply impressed suture and well developed calcareous layer and periostracum. Upper part of spire projects slightly above inflated last whorl which occupies almost entire shell. Protoconch small, white, uncovered by periostracum. Periostracum fibrous, yellowish or brown, tightly adherent to shell forming closely spaced discontinuous spiral crests. Intervals between crests are equal to or 2 times the crest thickness. Adult individuals with 22-30 crests on last whorl. Sculpture on calcareous layer of ir¬regular growth lines crossing spiral riblets. The ribs correspond to crests on per¬iostracum. Aperture broad, almost rounded, opaque-white on inside. Inner lip slightly turned back on outside. Measurements. - Largest seen specimen: height 15 mm, length 26 mm, width 20 mm. Remarks. - The species is separated from the closely related V. (V.) schneideri by a more strongly developed periostracum structure with 22-30 spiral crests on last whorl. Distribution. - In the Arctic Region the species is circumpolar. In the Pacific it occurs in the Bering and northern parts of Okhotsk and Japan Seas as well as Gulf of Alaska. In accordance with MacGinitie (1959), the species is found in Monterey Bay (California) and in the Atlantic Ocean it is distributed to Cape Hatteras and Portugal. Ecology. - The species occurs at depths from 0.5 to 408 m, most common at 20 to 150 m on mud, gravel and pebble mixture and muddy sand substrata, often in Laminaria and other algae as well as on ascidians.
[Show full text]