The Nautilus

Total Page:16

File Type:pdf, Size:1020Kb

The Nautilus THE NAUTILUS Volume 105 1991 ' I AUTHOR INDEX Bail, P 159 Marshall, B. A 104 BiELER, R 39 Okutani, T 165 BoucHET, P 159 Paul, A. J 173 Braley, R. D 92 QuiNN, J. F., Jr 81, 166 Clifford, H. F 173 Reid, D. G 1,7 Emerson, VV. K 62 Rosenberg, G 147 GoLiKov, A. N 7 Salisbury, R 147 HouART, R 26 Sergievsky, SO 1 HuLiNGS, N. C 16 Sysoev, a. V 119 Kabat, a. R 39 Toll, R B 116 Kantor, Y.I 119 Vidrine, M F 152 Ledua, E 92 Wilson, J. L. 152 Lucas, J. S 92 Zaslavskaya, N. 1 1 NEW TAXA proposed IN VOLUME 105 (1991) gastropoda Calliotropis dentata Quinn, new species (Trochidae) 170 Calliotropis globosa Quinn, new species (Trochidae) 168 Echinogurges tuberculatus Quinn, new species (Trochidae) 170 Gaza olivacea Quinn, new species (Trochidae) 166 Lamellitrochus Quinn, new genus (Trochidae) 81 Lamellitrochus bicoronatus Quinn, new species (Trochidae) 87 Lamellitrochus carinatus Quinn, new species (Trochidae) 84 Lamellitrochus fenestratus Quinn, new species (Trochidae) 85 Lamellitrochus filosus Quinn, new species (Trochidae) 87 Lamellitrochus inceratus Quinn, new species (Trochidae) 88 Lamellitrochus suavis Quinn, new species (Trochidae) 87 Mirachelus acanthus Quinn, new species (Trochidae) 168 Littorina (Littorina) hasatka Reid, Zaslavskaya, and Sergeivsky, new species (Littorinidae) 1 Litturina (Neritrema) naticoides Reid and GoUkov, new species (Littorinidae) 8 Derniomurex (Trialatella) leali Houart, new species (Muricidae) 27 Favartria (Favartia) varimutabilis Houart, new species (Muricidae) 32 Trophon mucrone Houart, new species (Muricidae) 35 Lyria doutei Bouchet and Bail, new species (Volutidae) 160 Vexillum brunneolinea Rosenberg and Salisbury, new species (Costellariidae) 147 Vexillum elliscrossi Rosenberg and Salisbury, new species (Costellariidae) 149 Antiplanes ahijssalis Kantor and Sysoev, new species (Turridae) 125 Antiplanes dendrotiplicata Kantor and Sysoev, new species (Turridae) 127 Antiplanes gabbi Kantor and Sysoev, new name (Turridae) 122 Antiplanes habei Kantor and Sysoev, new species (Turridae) 141 Antiplanes hurilensis Kantor and Sysoev, new species (Turridae) 136 Antiplanes molojimai aquilonalis Kantor and Sysoev, new subspecies (Turridae) 140 Antiplanes obliquiplicata Kantor and Sysoev, new species (Turridae) 128 Antiplanes spirinae Kantor and Sysoev, new species (Turridae) 137 THE NAUTILUS Turner EDITOR-IN-CHIEF Mr. Richard I. Johnson Dr. Ruth D. Department of Mollusks Department of Mollusks Dr. M. G. Harasewych of Comparative Zoology Museum of Comparative Zoology Division of MoUusks Museum Universitv Harvard Universitv National Museum of Harvard 02138 Cambridge, MA 02138 Natural History- Cambridge, MA Smithsonian Institution Dr. Geerat Vermeij Washington, DC 20560 Dr. Aurele La Rocque J. Department of Geology Department of Geology ASSOCIATE EDITOR The Ohio State Universitv Universitv of California at Davis Columbus, OH 43210 Davis, CA 95616 Pr. R. Tucker Abbott American Malacologists, Inc. Dr. James H. McLean P.O. Box 2255 Department of Malacology Melbourne, FL 32902 Los Angeles County Museum of Natural History Boulevard CONSULTING EDITORS 900 Exposition Los Angeles, CA 90007 Dr. Rudiger Bieler SUBSCRIPTION INFORMATION Department of Invertebrates Dr. Arthur S. Merrill The subscription rate per volume Field Museum of % Department of Mollusks is US $25.00 for individuals, US Natural History Museum of Comparative Zoology $35.00 for institutions. Postage Chicago, IL 60605 Harvard Universitv outside the United States is an Cambridge, MA 02138 additional US $4.00 for surface Dr. Robert T. Dillon, Jr. and US $12.00 for air mail. All Department of Biology Ms. Paula M. Mikkelsen orders should be accompanied b\ College of Charleston Harbor Branch Oceanographic pavment and sent to: THE Charleston, SC 29424 Institution, Inc. NAUTILUS, P.O. Box 7279, Silver Ft. Pierce, FL 33450 Spring, MD 20907-7279, USA. Dr. William K. Emerson Department of Living Invertebrates Dr. Donald R. Moore Change of address: Plea.se inform The .American Museum of Natural Division of Marine Geology the publisher of your nev\ address Historv and Geophysics at least 6 weeks in advance. All New York, NY 10024 Rosenstiel School of Marine and communications should include Atmospheric Science both old and new addresses (with Mr. Samuel L. H. Fuller University of Miami zip codes) and state the effective 1053 Mapleton Avenue 4600 Rickenbacker Causeway date. Suffield, 06078 CT Miami, FL 33149 THE NAUTILUS (ISSN 0028- Hershler Dr. Robert Mr. Richard E. Petit 1344) is published quarterly by Division of Mollusks P.O. Box 30 Trophon Corporation, 8911 Alton National Museum of North Myrtle Beach, SC 29582 Parkway, Silver Spring, MD 20910. Natural History Smithsonian Institution Dr. Edward J. Petuch at Silver Washington, DC 20560 Department of Geology Second Class postage paid mailing Florida Atlantic University Spring, MD and additional Dr. Richard S. Houbrick Boca Raton, FL 33431 offices. Division of Mollusks National Museum of Dr. David H. Stansbery POSTMASTER: Send address Natural History Museum of Zoologv' changes to: THE NAUTILUS Smithsonian Institution The Ohio State Universitv P.O. Box 7279 Washington, DC 20560 Columbus, OH 43210 Silver Spring, MD 20907-7279 THE€7NAUTILUS Volume 105, Number 1 March 14, 1991 ISSN 0028-1344 CONTENTS ^ - j -r. ^J»;JfUtUi> I LIBRARY ; ' 1 Liitorina kasatka. a Species the Kurile David G. Reid New from IslMdO O c iQQi ! /^ Nadya I. Zaslavskaya and Okhotsk Sea l " ^ '^y ' f 1 Sergei O. Sergievsky | Wqqcj.s l j- Ho e. Macs.— David G. Reid Liitorina naticoides. New Species, with Notes on the Alexander M. Golikov Other Smooth-shelled Liitorina Species from the Northwestern Pacific 7 Neil C. Hulings Activity Patterns and Homing of Acanthopleura gemmata (Blainville, 1825) (Mollusca: Pohplacophora) in the Rocky Intertidal of the Jordan Gulf of Aqaba 16 Roland Houart The Southeastern Brazilian Muricidae Collected by RV Marion-Dusfresne in 1987, with the Description of Three New Species . 26 News and Notices 38 THE NAUTILUS 105(l):l-6, 1991 Page 1 Littorina kasatka, a New Species from the Kiirile Islands and Okhotsk Sea David C. Reid Nadya I. Zaslavskaya Sergei O. Sergievsky Department of Zoology Institute of Marine Biology Zoological Institute The Natural Histor\ Museum Academy of Sciences of tlie U.S.S.R. Academy of Sciences of the U.S.S.R. London SW7 5BD, U.K. Vladivostok 690032, U.S.S.R. Leningrad 199034, U.S.S.R. ABSTRACT quently low (Nei's (1978) genetic identity / = 0.065). The new species was recognized independently during A new species, Littorina (Littorina) kasatka. is described from anatomical studies of Littorina material from the Zoo- the Kurile Islands and Okhotsk Sea It is similar in shell char- logical Institute, Leningrad, as part of a systematic study acters to a smooth form of L. (S'critrcnw) sitkana. with which of all Littorina species in the Pacific (Reid, in prep). it is sympatric, but is distinguished by the absence of mam- milliform glands on the penis of the male and by the small Recognition of the new species in the field is difficult, jell) gland of the female. It is predicted that L. kasatka produces since shell form is similar to that of L. sitkana and several pelagic egg capsules and has planktotrophic development other Littorina species, but both males and females dis- play unique reproductive anatomy. Kctj words: Littorina. Pacific; Larval development. MATERIAL AND METHODS INTRODUCTION The new species is described from six lots in the Zoolog- The generic name Littorina has in the past been applied ical Institute, Leningrad (ZIL), and one lot in the Zoo- to man\ littorinids with reiativeK large, smooth or spi- logical Museum, Moscow (ZMM), all of which are du- rally sculptured shells, that occur in the littoral zone. plicated in the Natural History Museum, London However, a recent phylogenetic analysis of the Littorin- (BMNH). That it is indeed undescribed was confirmed idae, based largely on anatomical rather than shell char- by comparison with original descriptions of all available acters, has defined Littorit}a more narrowly as a mono- names of Littorina species from the Pacific, and with all phyletic clade of about 20 species (Reid, 1989). Species available type specimens (housed in BMNH, ZIL and of Littorina sensu stricto are found only in the northern National Museum of Natural History, Washington, D.C.); hemisphere, where they are characteristic inhabitants of details will appear elsewhere, in a full account of the the eulittoral and littoral fringe on temperate and cold systematics of Littorina (Reid, in prep). Closely related temperate shores. species are discussed briefly below. During the past two decades close investigation of the The reproductive anatomy was examined in ten males reproductive anatomy of European Littorina species has and nine females. The spiral pattern of the albumen and revealed the existence of three additional species, pre- capsule glands of the pallial oviduct can be seen, without viously unrecognized b\ shell characters (review by Raf- dissection, on the right side of the body adjacent to the faelli, 1982; Johannesson & Johannesson, 1990). The bio- columellar muscle, when a female is removed from the chemical technique of enzyme electrophoresis has shell. Serial histological sections were prepared of the confirmed that these species are genetically distinct (re- pallial oviduct of two females. Radulae were extracted view by Ward, 1990). More recently, a pair of sibling from six specimens from three localities, and after clean- species has been identified in the northeastern Pacific, ing in hot concentrated sodium hydroxide solution were again using the dual approach of reproductive anatomy examined by scanning electron microscopy. For com- and biochemistry (Murray, 1979; Mastro et ai, 1982). In parison, 45 specimens of L. sitkana were dissected, from contrast, the Littorina of the northern and northwestern localities all around the northern Pacific from Hokkaido Pacific are poorly known. This paper describes a new to Washington, and four radulae were examined. Details species that was discovered during a genetic study of of other Littorina species investigated are given in Reid Littorina kiirila Middendorff, 1848 from the Kurile Is- and Golikov (1990).
Recommended publications
  • (10 Y 50 M De Profundidad), Caribe Colombiano*
    Bol. Invest. Mar. Cost. 39 (2) 397-416 ISSN 0122-9761 Santa Marta, Colombia, 2010 MOLUSCOS BENTÓNICOS DE LA GUAJIRA (10 Y 50 M DE PROFUNDIDAD), CARIBE COLOMBIANO* Erlenis Fontalvo Palacio 1, Adriana Gracia C. 1 y Guillermo Duque 2 1 Instituto de Investigaciones Marinas y Costeras “José Benito Vives De Andréis”-INVEMAR, Museo de Historia Natural Marina de Colombia (MHNMC), A.A.1016, Santa Marta, Colombia. erlenis_fontalvo@ invemar.org.co (E.F.), [email protected] (A.G.) 2 Universidad Nacional de Colombia, Facultad de Ingeniería y Administración, Departamento de Ingeniería, Ingeniería Ambiental, Carrera 32 Chapinero, Palmira, Colombia. [email protected]. edu.co RESUMEN Se estudi la composicin y abundancia de los moluscos bentnicos encontrados en el departamento de La Guajira al norte del Caribe colombiano. Para esto se realiz un crucero de investigacin a bordo del B/I Ancn del INVEMAR en donde se llevaron a cabo arrastres a 10 y 50 m de profundidad. Se recolect un total de 4840 individuos, identificndose 215 especies pertenecientes a las clases Gastropoda, Bivalvia, Scaphopoda, Cephalopoda y Polyplacophora, dentro de las cuales 19 fueron especies registradas por primera vez para el departamento. La clase Gastropoda present el mayor nmero de especies (52 %) y Bivalvia la mayor abundancia (71 % de los individuos), siendo el bivalvo Laevicardium sybariticum la especie ms abundante del rea de estudio. Los anlisis multivariados utilizados no mostraron patrones claramente definidos con relacin a la profundidad y el tipo de sedimento. PALABRAS CLAVE: Moluscos, Abundancia, Riqueza, La Guajira, Caribe colombiano. ABSTRACT Benthic mollusks of La Guajira (10 and 50 m depths), Colombian Caribbean.
    [Show full text]
  • Cavallari Et Al. V5.Indd
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: European Journal of Taxonomy Jahr/Year: 2016 Band/Volume: 0213 Autor(en)/Author(s): Cavallari Daniel C., Dornellas Ana Paula S., Simone Luiz Ricardo L. Artikel/Article: Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil 1-59 European Journal of Taxonomy 213: 1–59 ISSN 2118-9773 http://dx.doi.org/10.5852/ejt.2016.213 www.europeanjournaloftaxonomy.eu 2016 · Cavallari D.C. et al. This work is licensed under a Creative Commons Attribution 3.0 License. Monograph urn:lsid:zoobank.org:pub:C1E8E726-9AB3-456A-97B2-A925A682DB52 Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil Daniel C. CAVALLARI 1,*, Ana Paula S. DORNELLAS 2 & Luiz Ricardo L. SIMONE 3 1,2,3 Museu de Zoologia da Universidade de São Paulo, Cx. Postal 42494, 04218-970 São Paulo, SP, Brazil. * Corresponding author: [email protected] 2 Email: [email protected] 3 Email: [email protected] 1 urn:lsid:zoobank.org:author:D0D70348-AF5B-417F-91BC-43DF9951D895 2 urn:lsid:zoobank.org:author:B4162AEE-63BF-43D5-AABE-455AC51678BA 3 urn:lsid:zoobank.org:author:E66B5424-8F32-4710-B332-F35B9C8B84B0 Abstract. An alphabetical list of 352 type lots of molluscs housed in the Museu de Zoologia da Universidade de São Paulo is presented following the standards of the previous list by Dornellas & Simone (2011), with a few adjustments. Important items listed herein include types of species described after the previous compilation, as well as recently acquired paratypes of Asian Pomatiopsidae and Diplommatinidae (Gastropoda) taxa described by Rolf A.M.
    [Show full text]
  • Moluscos Del Perú
    Rev. Biol. Trop. 51 (Suppl. 3): 225-284, 2003 www.ucr.ac.cr www.ots.ac.cr www.ots.duke.edu Moluscos del Perú Rina Ramírez1, Carlos Paredes1, 2 y José Arenas3 1 Museo de Historia Natural, Universidad Nacional Mayor de San Marcos. Avenida Arenales 1256, Jesús María. Apartado 14-0434, Lima-14, Perú. 2 Laboratorio de Invertebrados Acuáticos, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Apartado 11-0058, Lima-11, Perú. 3 Laboratorio de Parasitología, Facultad de Ciencias Biológicas, Universidad Ricardo Palma. Av. Benavides 5400, Surco. P.O. Box 18-131. Lima, Perú. Abstract: Peru is an ecologically diverse country, with 84 life zones in the Holdridge system and 18 ecological regions (including two marine). 1910 molluscan species have been recorded. The highest number corresponds to the sea: 570 gastropods, 370 bivalves, 36 cephalopods, 34 polyplacoforans, 3 monoplacophorans, 3 scaphopods and 2 aplacophorans (total 1018 species). The most diverse families are Veneridae (57spp.), Muricidae (47spp.), Collumbellidae (40 spp.) and Tellinidae (37 spp.). Biogeographically, 56 % of marine species are Panamic, 11 % Peruvian and the rest occurs in both provinces; 73 marine species are endemic to Peru. Land molluscs include 763 species, 2.54 % of the global estimate and 38 % of the South American esti- mate. The most biodiverse families are Bulimulidae with 424 spp., Clausiliidae with 75 spp. and Systrophiidae with 55 spp. In contrast, only 129 freshwater species have been reported, 35 endemics (mainly hydrobiids with 14 spp. The paper includes an overview of biogeography, ecology, use, history of research efforts and conser- vation; as well as indication of areas and species that are in greater need of study.
    [Show full text]
  • Littorina Sitkana Philippi, 1846)
    UVicSPACE: Research & Learning Repository _____________________________________________________________ Faculty of Science Faculty Publications _____________________________________________________________ Local site differences in survival and parasitism of periwinkles (Littorina sitkana Philippi, 1846) Mónica Ayala-Díaz, Jean M. L. Richardson, & Bradley R. Anholt 2017 © 2017 Ayala- Díaz et al. This is an open access article distributed under the terms of the Creative Commons Attribution License. http://creativecommons.org/licenses/by/4.0 This article was originally published at: https://doi.org/10.1002/ece3.2708 Citation for this paper: Ayala-Díaz, M.; Richardson, J. M. L.; & Anholt, B. R. (2017). Local site differences in survival and parasitism of periwinkles (Littorina sitkana Philippi, 1846). Ecology and Evolution, 7(4), 1021-1029. https://doi.org/10.1002/ece3.2708 Received: 7 August 2016 | Revised: 4 November 2016 | Accepted: 17 December 2016 DOI: 10.1002/ece3.2708 ORIGINAL RESEARCH Local site differences in survival and parasitism of periwinkles (Littorina sitkana Philippi, 1846) Mónica Ayala-Díaz1,2 | Jean M. L. Richardson1 | Bradley R. Anholt1,2 1Bamfield Marine Sciences Centre, Bamfield, BC, Canada Abstract 2Department of Biology, University of Victoria, The periwinkle, Littorina sitkana, is found throughout the intertidal zone, often in iso- Victoria, BC, Canada lated subpopulations. The majority of trematode parasites use snails as intermediate Correspondence hosts, and decreased survivorship is often observed in snails infected with trematodes. Mónica Ayala-Díaz, Bamfield Marine Sciences Sampling L. sitkana from four sites in Barkley Sound, British Columbia, Canada, we test Centre, Bamfield, BC, Canada. Email: [email protected] the effects of parasitic infection on snail survival using maximum likelihood and Bayesian approaches using the software MARK and WinBUGS.
    [Show full text]
  • DOGAMI Open-File Report O-86-06, the State of Scientific
    "ABLE OF CONTENTS Page INTRODUCTION ..~**********..~...~*~~.~...~~~~1 GORDA RIDGE LEASE AREA ....................... 2 RELATED STUDIES IN THE NORTH PACIFIC .+,...,. 5 BYDROTHERMAL TEXTS ........................... 9 34T.4 GAPS ................................... r6 ACKNOWLEDGEMENT ............................. I8 APPENDIX 1. Species found on the Gorda Ridge or within the lease area . .. .. .. .. .. 36 RPPENDiX 2. Species found outside the lease area that may occur in the Gorda Ridge Lease area, including hydrothermal vent organisms .................................55 BENTHOS THE STATE OF SCIENTIFIC INFORMATION RELATING TO THE BIOLOGY AND ECOLOGY 3F THE GOUDA RIDGE STUDY AREA, NORTZEAST PACIFIC OCEAN: INTRODUCTION Presently, only two published studies discuss the ecology of benthic animals on the Gorda Sidge. Fowler and Kulm (19701, in a predominantly geolgg isal study, used the presence of sublittor31 and planktsnic foraminiferans as an indication of uplift of tfie deep-sea fioor. Their resuits showed tiac sedinenta ana foraminiferans are depositea in the Zscanaba Trough, in the southern part of the Corda Ridge, by turbidity currents with a continental origin. They list 22 species of fararniniferans from the Gorda Rise (See Appendix 13. A more recent study collected geophysical, geological, and biological data from the Gorda Ridge, with particular emphasis on the northern part of the Ridge (Clague et al. 19843. Geological data suggest the presence of widespread low-temperature hydrothermal activity along the axf s of the northern two-thirds of the Corda 3idge. However, the relative age of these vents, their present activity and presence of sulfide deposits are currently unknown. The biological data, again with an emphasis on foraminiferans, indicate relatively high species diversity and high density , perhaps assoc iated with widespread hydrotheraal activity.
    [Show full text]
  • (Approx) Mixed Micro Shells (22G Bags) Philippines € 10,00 £8,64 $11,69 Each 22G Bag Provides Hours of Fun; Some Interesting Foraminifera Also Included
    Special Price £ US$ Family Genus, species Country Quality Size Remarks w/o Photo Date added Category characteristic (€) (approx) (approx) Mixed micro shells (22g bags) Philippines € 10,00 £8,64 $11,69 Each 22g bag provides hours of fun; some interesting Foraminifera also included. 17/06/21 Mixed micro shells Ischnochitonidae Callistochiton pulchrior Panama F+++ 89mm € 1,80 £1,55 $2,10 21/12/16 Polyplacophora Ischnochitonidae Chaetopleura lurida Panama F+++ 2022mm € 3,00 £2,59 $3,51 Hairy girdles, beautifully preserved. Web 24/12/16 Polyplacophora Ischnochitonidae Ischnochiton textilis South Africa F+++ 30mm+ € 4,00 £3,45 $4,68 30/04/21 Polyplacophora Ischnochitonidae Ischnochiton textilis South Africa F+++ 27.9mm € 2,80 £2,42 $3,27 30/04/21 Polyplacophora Ischnochitonidae Stenoplax limaciformis Panama F+++ 16mm+ € 6,50 £5,61 $7,60 Uncommon. 24/12/16 Polyplacophora Chitonidae Acanthopleura gemmata Philippines F+++ 25mm+ € 2,50 £2,16 $2,92 Hairy margins, beautifully preserved. 04/08/17 Polyplacophora Chitonidae Acanthopleura gemmata Australia F+++ 25mm+ € 2,60 £2,25 $3,04 02/06/18 Polyplacophora Chitonidae Acanthopleura granulata Panama F+++ 41mm+ € 4,00 £3,45 $4,68 West Indian 'fuzzy' chiton. Web 24/12/16 Polyplacophora Chitonidae Acanthopleura granulata Panama F+++ 32mm+ € 3,00 £2,59 $3,51 West Indian 'fuzzy' chiton. 24/12/16 Polyplacophora Chitonidae Chiton tuberculatus Panama F+++ 44mm+ € 5,00 £4,32 $5,85 Caribbean. 24/12/16 Polyplacophora Chitonidae Chiton tuberculatus Panama F++ 35mm € 2,50 £2,16 $2,92 Caribbean. 24/12/16 Polyplacophora Chitonidae Chiton tuberculatus Panama F+++ 29mm+ € 3,00 £2,59 $3,51 Caribbean.
    [Show full text]
  • Foregut Anatomy of the Cochlespirinae (Gastropoda, Conoidea, Turridae)
    Foregut anatomy of the Cochlespirinae (Gastropoda, Conoidea, Turridae) Alexandra I. MEDINSKAYA A. N. Severtzov Institute of Problems of Evolution, Leninsky Prospect 33, Moscow 117071 (Russia) Medinskaya A. I. 1999. — Foregut anatomy of the Cochlespirinae (Gastropoda. Conoidea. Turridae). Zoosystema2\ (2): 171-198. ABSTRACT The foregut anatomy of 20 species, belonging to eight genera, of the sub­ family Cochlespirinae is described. A cladistic analysis based on several most important characters (morphology of proboscis, position of buccal sphinc­ ters, histology of venom gland, position of the venom gland opening, struc­ ture of muscular bulb, and morphology of radular teeth) revealed three more or less well-defined groups within the subfamily. The main feature characte­ rizing the subfamily as a whole and separating groups within it, appeared to be the structure of venom gland and its muscular bulb. The subgenus KEYWORDS Cochlespirinae, Sibogasyrinx of the genus Leucosyrinx was shown to deserve a genus status. Conoidea, Some genera appeared to be intermediate between Cochlespirinae and anatomy, foregut, Crassispirinae in some anatomical characters, and their taxonomic position histology. remains not completely clear. RESUME L'anatomie du système digestif des Cochlespirinae (Gastropoda, Conoidea, Turridae). L'anatomie du système digestif de 20 espèces, appartenant à huit genres de la sous-famille Cochlespirinae, est étudiée. Une analyse cladistique, fondée sur les plus importants caractères de ce groupe (la morphologie de la trompe, la disposition des sphincters, l'histologie de la glande à venin, la disposition de l'ouverture de la glande à venin, la structure de la poire musculaire et la mor­ phologie des dents de la radula) a permis de distinguet trois groupes plus ou moins homogènes.
    [Show full text]
  • Freshwater Mussel Survey of Clinchport, Clinch River, Virginia: Augmentation Monitoring Site: 2006
    Freshwater Mussel Survey of Clinchport, Clinch River, Virginia: Augmentation Monitoring Site: 2006 By: Nathan L. Eckert, Joe J. Ferraro, Michael J. Pinder, and Brian T. Watson Virginia Department of Game and Inland Fisheries Wildlife Diversity Division October 28th, 2008 Table of Contents Introduction....................................................................................................................... 4 Objective ............................................................................................................................ 5 Study Area ......................................................................................................................... 6 Methods.............................................................................................................................. 6 Results .............................................................................................................................. 10 Semi-quantitative .................................................................................................. 10 Quantitative........................................................................................................... 11 Qualitative............................................................................................................. 12 Incidental............................................................................................................... 12 Discussion........................................................................................................................
    [Show full text]
  • Miller L. P. & M. W. Denny. (2011)
    Reference: Biol. Bull. 220: 209–223. (June 2011) © 2011 Marine Biological Laboratory Importance of Behavior and Morphological Traits for Controlling Body Temperature in Littorinid Snails LUKE P. MILLER1,* AND MARK W. DENNY Hopkins Marine Station, Stanford University, Pacific Grove, California 93950 Abstract. For organisms living in the intertidal zone, Introduction temperature is an important selective agent that can shape species distributions and drive phenotypic variation among Within the narrow band of habitat between the low and populations. Littorinid snails, which occupy the upper limits high tidemarks on seashores, the distribution of individual of rocky shores and estuaries worldwide, often experience species and the structure of ecological communities are extreme high temperatures and prolonged aerial emersion dictated by a variety of biotic and abiotic factors (Connell, during low tides, yet their robust physiology—coupled with 1961, 1972; Lewis, 1964; Paine, 1974; Dayton, 1975; morphological and behavioral traits—permits these gastro- Menge and Branch, 2001). Biological interactions such as pods to persist and exert strong grazing control over algal predation, competition, and facilitation play out on a back- communities. We use a mechanistic heat-budget model to ground of constantly shifting environmental conditions driven primarily by the action of tides and waves (Stephen- compare the effects of behavioral and morphological traits son and Stephenson, 1972; Denny, 2006; Denny et al., on the body temperatures of five species of littorinid snails 2009). Changes in important environmental parameters under natural weather conditions. Model predictions and such as light, temperature, and wave action can alter the field experiments indicate that, for all five species, the suitability of the habitat for a given species at both small relative contribution of shell color or sculpturing to temper- and large spatial scales (Wethey, 2002; Denny et al., 2004; ature regulation is small, on the order of 0.2–2 °C, while Harley, 2008).
    [Show full text]
  • ABSTRACT Title of Dissertation: PATTERNS IN
    ABSTRACT Title of Dissertation: PATTERNS IN DIVERSITY AND DISTRIBUTION OF BENTHIC MOLLUSCS ALONG A DEPTH GRADIENT IN THE BAHAMAS Michael Joseph Dowgiallo, Doctor of Philosophy, 2004 Dissertation directed by: Professor Marjorie L. Reaka-Kudla Department of Biology, UMCP Species richness and abundance of benthic bivalve and gastropod molluscs was determined over a depth gradient of 5 - 244 m at Lee Stocking Island, Bahamas by deploying replicate benthic collectors at five sites at 5 m, 14 m, 46 m, 153 m, and 244 m for six months beginning in December 1993. A total of 773 individual molluscs comprising at least 72 taxa were retrieved from the collectors. Analysis of the molluscan fauna that colonized the collectors showed overwhelmingly higher abundance and diversity at the 5 m, 14 m, and 46 m sites as compared to the deeper sites at 153 m and 244 m. Irradiance, temperature, and habitat heterogeneity all declined with depth, coincident with declines in the abundance and diversity of the molluscs. Herbivorous modes of feeding predominated (52%) and carnivorous modes of feeding were common (44%) over the range of depths studied at Lee Stocking Island, but mode of feeding did not change significantly over depth. One bivalve and one gastropod species showed a significant decline in body size with increasing depth. Analysis of data for 960 species of gastropod molluscs from the Western Atlantic Gastropod Database of the Academy of Natural Sciences (ANS) that have ranges including the Bahamas showed a positive correlation between body size of species of gastropods and their geographic ranges. There was also a positive correlation between depth range and the size of the geographic range.
    [Show full text]
  • Complex Male Mate Choice in Marine Snails Littorina
    Complex Male Mate Choice in Marine Snails Littorina Sara Hintz Saltin Licentiate thesis Department of Marine Ecology University of Gothenburg Till Mamma, Pappa och Hanna Abstract The ability to recognise potential mates and choose the best possible mating-partner is of fundamental importance for most animal species. This thesis presents studies of male mate choice within the genus Littorina. Males of this genus are sometimes observed to initiate mating with other males or with females of other species. How such suboptimal mating patterns can evolve is the theme of this thesis. In one study we investigated pre-copulatory- and copulation behaviour in L. fabalis and between this species and its sister-species L. obtusata. We found that males preferred to mount and mate with large and more fecund females rather than small females. Males also preferred to track the largest females mucus trails even though these were trails from another species (L. obtusata) although cross-matings were interrupted before completion. In a second study we found that males of three species (L. littorea, L. fabalis and L. obtusata) preferentially followed female trails. This suggests that females add a “gender cue” in the mucus. In the forth species, L. saxatilis, males followed male and female trails at random. Along with experimental evidence for high mating costs and abilities for male L. saxatilis to detect females of a related species, this suggests a sexual conflict over mating frequency. To reduce number of matings females avoid advertising their sex by disguise their mucus. The reason for the different species strategies is that L.
    [Show full text]
  • The Causal Relationship Between Sexual Selection and Sexual Size Dimorphism in Marine Gastropods
    Title Document The causal relationship between sexual selection and sexual size dimorphism in marine gastropods Terence P. T. Ng1,a, Emilio Rolán-Alvarez2,3,a, Sara Saltin Dahlén4, Mark S. Davies5, Daniel Estévez2, Richard Stafford6, Gray A. Williams1* 1 The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China 2 Departamento de Bioquímica, Genética e Inmunología, Facultad de Biología, Universidad de Vigo, 36310 Vigo Spain 3 Centro de Investigación Mariña da Universidade de Vigo 4 Department of Marine Sciences - Tjärnö, University of Gothenburg, SE-452 96 Strömstad, Sweden 5 Faculty of Applied Sciences, University of Sunderland, Sunderland, U.K. 6 Faculty of Science and Technology, Bournemouth University, U.K. a Contributed equally to this work *Correspondence: Gray A. Williams, The Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong E-mail: [email protected] Telephone: (852) 2809 2551 Fax: (852) 2809 2197 Author contribution. TPTN obtained data from all species except L. fabalis and contributed to data analysis, SHS contributed to sampling Swedish littorinids, MSD, RS and GAW to sampling HK littorinids, DE to Spanish samples, and ER-A contributed to Spanish sampling and data analysis. Developing the MS was led by TPTN, ER-A and GAW and all authors contributed to writing the MS and gave final approval for submission. Competing interests. We declare we have no competing interests. Acknowledgements. Permission to work at the Cape d' Aguilar Marine Reserve was granted by the Agriculture, Fisheries and Conservation Department of the Hong Kong SAR Government (Permit No.: (116) in AF GR MPA 01/5/2 Pt.12).
    [Show full text]