Thiara Amarula (Linnaeus, 1758)
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Geometric Morphometric Analysis Reveals That the Shells of Male and Female Siphon Whelks Penion Chathamensis Are the Same Size and Shape Felix Vaux A, James S
MOLLUSCAN RESEARCH, 2017 http://dx.doi.org/10.1080/13235818.2017.1279474 Geometric morphometric analysis reveals that the shells of male and female siphon whelks Penion chathamensis are the same size and shape Felix Vaux a, James S. Cramptonb,c, Bruce A. Marshalld, Steven A. Trewicka and Mary Morgan-Richardsa aEcology Group, Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand; bGNS Science, Lower Hutt, New Zealand; cSchool of Geography, Environment & Earth Sciences, Victoria University, Wellington, New Zealand; dMuseum of New Zealand Te Papa Tongarewa, Wellington, New Zealand ABSTRACT ARTICLE HISTORY Secondary sexual dimorphism can make the discrimination of intra and interspecific variation Received 11 July 2016 difficult, causing the identification of evolutionary lineages and classification of species to be Final version received challenging, particularly in palaeontology. Yet sexual dimorphism is an understudied research 14 December 2016 topic in dioecious marine snails. We use landmark-based geometric morphometric analysis to KEYWORDS investigate whether there is sexual dimorphism in the shell morphology of the siphon whelk Buccinulidae; conchology; Penion chathamensis. In contrast to studies of other snails, results strongly indicate that there fossil; geometric is no difference in the shape or size of shells between the sexes. A comparison of morphometrics; mating; P. chathamensis and a related species demonstrates that this result is unlikely to reflect a paleontology; reproduction; limitation of the method. The possibility that sexual dimorphism is not exhibited by at least secondary sexual some species of Penion is advantageous from a palaeontological perspective as there is a dimorphism; snail; true whelk rich fossil record for the genus across the Southern Hemisphere. -
Caenogastropoda: Truncatelloidea) from the Aegean Islands: a Long Or Short Story?
Org Divers Evol DOI 10.1007/s13127-015-0235-5 ORIGINAL ARTICLE Pseudamnicola Paulucci, 1878 (Caenogastropoda: Truncatelloidea) from the Aegean Islands: a long or short story? Magdalena Szarowska1 & Artur Osikowski2 & Sebastian Hofman2 & Andrzej Falniowski1 Received: 31 January 2015 /Accepted: 18 August 2015 # The Author(s) 2015. This article is published with open access at Springerlink.com Abstract The aims of the study were (i) to reveal the pattern entities coinciding with clades of the ML tree based on 44 of phylogeny of Pseudamnicola inhabiting the Aegean haplotypes and 189 sequences. The present pattern of diversi- Islands, (ii) to describe and analyse the variation of the mor- ty, together with dating of divergence time, reflects a short phology in 17 populations of Pseudamnicola from the springs story of colonisation/recolonisation, supported by the Late on the Aegean Islands not studied so far and considering also Pleistocene land bridges, rather than the consequences of ear- another seven populations studied earlier and (iii) to find out lier geological events. The principal component analysis which model is more applicable to the island Pseudamnicola (PCA) on the shells of the molecularly distinct clades showed populations: either a model in which a relict fauna rich in differences, although variability ranges often overlap. Female endemics is differentiated in a way that mainly reflects the reproductive organs showed no differences between the geological history of the area or a model in which a relatively clades, and penile characters differed only in some cases. young fauna is composed of more or less widely distributed taxa, with relatively high levels of gene flow among the Keywords mtDNA . -
Marine Mollusca of Isotope Stages of the Last 2 Million Years in New Zealand
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/232863216 Marine Mollusca of isotope stages of the last 2 million years in New Zealand. Part 4. Gastropoda (Ptenoglossa, Neogastropoda, Heterobranchia) Article in Journal- Royal Society of New Zealand · March 2011 DOI: 10.1080/03036758.2011.548763 CITATIONS READS 19 690 1 author: Alan Beu GNS Science 167 PUBLICATIONS 3,645 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Integrating fossils and genetics of living molluscs View project Barnacle Limestones of the Southern Hemisphere View project All content following this page was uploaded by Alan Beu on 18 December 2015. The user has requested enhancement of the downloaded file. This article was downloaded by: [Beu, A. G.] On: 16 March 2011 Access details: Access Details: [subscription number 935027131] Publisher Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37- 41 Mortimer Street, London W1T 3JH, UK Journal of the Royal Society of New Zealand Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t918982755 Marine Mollusca of isotope stages of the last 2 million years in New Zealand. Part 4. Gastropoda (Ptenoglossa, Neogastropoda, Heterobranchia) AG Beua a GNS Science, Lower Hutt, New Zealand Online publication date: 16 March 2011 To cite this Article Beu, AG(2011) 'Marine Mollusca of isotope stages of the last 2 million years in New Zealand. Part 4. Gastropoda (Ptenoglossa, Neogastropoda, Heterobranchia)', Journal of the Royal Society of New Zealand, 41: 1, 1 — 153 To link to this Article: DOI: 10.1080/03036758.2011.548763 URL: http://dx.doi.org/10.1080/03036758.2011.548763 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article may be used for research, teaching and private study purposes. -
Systematics and Phylogenetic Species Delimitation Within Polinices S.L. (Caenogastropoda: Naticidae) Based on Molecular Data and Shell Morphology
Org Divers Evol (2012) 12:349–375 DOI 10.1007/s13127-012-0111-5 ORIGINAL ARTICLE Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology Thomas Huelsken & Daniel Tapken & Tim Dahlmann & Heike Wägele & Cynthia Riginos & Michael Hollmann Received: 13 April 2011 /Accepted: 10 September 2012 /Published online: 19 October 2012 # Gesellschaft für Biologische Systematik 2012 Abstract Here, we present the first phylogenetic analysis of callus) to be informative, while many characters show a a group of species taxonomically assigned to Polinices high degree of homoplasy (e.g. umbilicus, shell form). sensu latu (Naticidae, Gastropoda) based on molecular data Among the species arranged in the genus Polinices s.s., four sets. Polinices s.l. represents a speciose group of the infau- conchologically very similar taxa often subsumed under the nal gastropod family Naticidae, including species that have common Indo-Pacific species P. mammilla are separated often been assigned to subgenera of Polinices [e.g. P. distinctly in phylogenetic analyses. Despite their striking (Neverita), P. (Euspira), P.(Conuber) and P. (Mammilla)] conchological similarities, none of these four taxa are relat- based on conchological data. The results of our molecular ed directly to each other. Additional conchological analyses phylogenetic analysis confirm the validity of five genera, of available name-bearing type specimens and type figures Conuber, Polinices, Mammilla, Euspira and Neverita, in- reveal the four “mammilla”-like white Polinices species to cluding four that have been used previously mainly as sub- include true P. mammilla and three additional species, which genera of Polinices s.l. -
Radular Morphology of Conus (Gastropoda: Caenogastropoda: Conidae) from India
Molluscan Research 27(3): 111–122 ISSN 1323-5818 http://www.mapress.com/mr/ Magnolia Press Radular morphology of Conus (Gastropoda: Caenogastropoda: Conidae) from India J. BENJAMIN FRANKLIN, 1, 3 S. ANTONY FERNANDO, 1 B. A. CHALKE, 2 K. S. KRISHNAN. 2, 3* 1.Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai-608 502, Cuddalore, Tamilnadu, India. 2.Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai-400 005, India. 3.National Centre for Biological Sciences, TIFR, Old Bellary Road, Bangalore-560 065, India.* Corresponding author E-mail: (K. S. Krishnan): [email protected]. Abstract Radular morphologies of 22 species of the genus Conus from Indian coastal waters were analyzed by optical and scanning elec- tron microscopy. Although the majority of species in the present study are vermivorous, all three feeding modes known to occur in the genus are represented. Specific radular-tooth structures consistently define feeding modes. Species showing simi- lar feeding modes also show fine differences in radular structures. We propose that these structures will be of value in species identification in cases of ambiguity in other characteristics. Examination of eight discrete radular-tooth components has allowed us to classify the studied species of Conus into three groups. We see much greater inter-specific differences amongst vermivorous than amongst molluscivorous and piscivorous species. We have used these differences to provide a formula for species identification. The radular teeth of Conus araneosus, C. augur, C. bayani, C. biliosus, C. hyaena, C. lentiginosus, C. loroisii, and C. malacanus are illustrated for the first time. In a few cases our study has also enabled the correction of some erroneous descriptions in the literature. -
Gastropoda: Littorinidae) from the Quaternary of Chile
Palaeontologia Electronica palaeo-electronica.org A new species of Echinolittorina Habe, 1956 (Gastropoda: Littorinidae) from the Quaternary of Chile Juan Francisco Araya and David G. Reid ABSTRACT We describe a new fossil littorinid species, Echinolittorina nielseni sp. nov., from the Quaternary Caldera Strata, Región de Atacama, northern Chile. Fossils of littorin- ids are globally rare because of their high-intertidal habitat on rocky shores. The new species has a large, broad shell with strong spiral ribs and an angled periphery, differ- ing from the two living littorinids currently found along the coasts of mainland Chile and from all the extant species distributed in the southeastern Pacific. In comparison with the living Chilean Echinolittorina peruviana, the new species shows stronger ribs and more inflated whorls, but they share an unusual detail in the irregular arrangement of spiral sculpture. We hypothesize that the new species may be ancestral or sister to E. peruviana and discuss the adaptive significance of shell sculpture. Juan Francisco Araya. Departamento de Geología, Universidad de Atacama, Copayapu 485, Copiapó, Región de Atacama, Chile and Programa de Doctorado en Sistemática y Biodiversidad, Universidad de Concepción, Concepción, Chile. [email protected] author: zoobank.org/Authors/443B4F42-FB13-42A6-B92B-1B0F835698A9 orcid.org/0000-0002-4087-964 David G. Reid. Mollusca Research Group, Department of Life Sciences, The Natural History Museum, London SW7 5BD, United Kingdom. [email protected] Keywords: Quaternary; Pleistocene; SE Pacific Ocean; Littoraria; new species Submission: 19 September 2015 Acceptance: 29 January 2016 INTRODUCTION cies continue to be discovered in the area, particu- larly in the Región de Atacama (Osorio, 2012; The shallow-water marine molluscs living in Araya, 2013). -
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. -
Chilean Marine Mollusca of Northern Patagonia Collected During the Cimar-10 Fjords Cruise
Gayana 72(2):72(2), 202-240,2008 2008 CHILEAN MARINE MOLLUSCA OF NORTHERN PATAGONIA COLLECTED DURING THE CIMAR-10 FJORDS CRUISE MOLUSCOS MARINOS CHILENOS DEL NORTE DE LA PATAGONIA RECOLECTADOS DURANTE EL CRUCERO DE FIORDOS CIMAR-10 Javiera Cárdenas1,2, Cristián Aldea1,3 & Claudio Valdovinos2,4* 1Center for Quaternary Studies (CEQUA), Casilla 113-D, Punta Arenas, Chile. 2Unit of Aquatic Systems, EULA-Chile Environmental Sciences Centre, Universidad de Concepción, Casilla 160-C, Concepción, Chile. [email protected] 3Departamento de Ecología y Biología Animal, Facultad de Ciencias del Mar, Campus Lagoas Marcosende, 36310, Universidad de Vigo, España. 4Patagonian Ecosystems Research Center (CIEP), Coyhaique, Chile. ABSTRACT The tip of the South American cone is one of the most interesting Subantarctic areas, both biogeographically and ecologically. Nonetheless, knowledge of the area’s biodiversity, in particular that of the subtidal marine habitats, remains poor. Therefore, in 2004, a biodiversity research project was carried out as a part of the cruise Cimar-10 Fjords, organized and supported by the Chilean National Oceanographic Committee (CONA). The results of the subtidal marine mollusk surveys are presented herein. The samples were collected aboard the Agor 60 “Vidal Gormaz” in winter 2004. The study area covered the northern Chilean Patagonia from Seno de Relocanví (41º31’S) to Boca del Guafo (43º49’S), on the continental shelf from 22 to 353 m depth. The Mollusca were collected at 23 sampling sites using an Agassiz trawl. In total, 67 -
Ranellidae and Personidae
RANELLIDAE AND PERSONIDAE: A CLASSIFICATION OF RECENT SPECIES Betty Jean Piech Digitized by the Internet Archive in 2017 with funding from IMLS LG-70-15-0138-15 https://archive.org/details/ranellidaepersonOOunse - 3 - INTRODUCTION, NOTES AND ACKNOWLEDGMENTS In 1972, Dr. Rudolf Kilias authored an excellent monograph on the Family Cymatiidae. The following years have brought many changes; i.e., the family name is now Ranellidae, and distorsios are a separate family called Personidae. Therefore it was felt that a more up-to-date classification was needed as a guide for research and curatorial work. The classification herein presented is based on the examination of specimens in various museums and private collections, literature research, and exchange of information. No anatomical work was done. In the few cases where previously-used placement was changed, the entry is marked < *> indicating the decision was based on the author's unpublished research. New species were evaluated as they were published and added if they were considered to be valid. Those not accepted were placed in synonymy and also marked < *> . In a few cases where it was not possible to obtain specimens of newly-named species for examination and the available information did not seem adequate to make a definitive decision, the name was entered as a species and marked <**> indicating validity had not been verified. The format used is a listing of each subfamily, genus and subgenus, and species and subspecies, followed by synonyms in chronological order. Under each of these categories, the type is placed first followed in alphabetical order by the remainder of those that make up that specific group. -
Marsupial' Freshwater
Zoosyst. Evol. 85 (2) 2009, 199–275 / DOI 10.1002/zoos.200900004 Diversity and disparity ‘down under’: Systematics, biogeography and reproductive modes of the ‘marsupial’ freshwater Thiaridae (Caenogastropoda, Cerithioidea) in Australia Matthias Glaubrecht*,1, Nora Brinkmann2 and Judith Pppe1 1 Museum fr Naturkunde Berlin, Department of Malacozoology, Invalidenstraße 43, 10115 Berlin, Germany 2 University of Copenhagen, Institute of Biology, Research Group for Comparative Zoology, Universitetsparken 15, 2100 Copenhagen, Denmark Abstract Received 11 May 2009 We systematically revise here the Australian taxa of the Thiaridae, a group of freshwater Accepted 15 June 2009 Cerithioidea with pantropical distribution and “marsupial” (i.e. viviparous) reproductive Published 24 September 2009 modes. On this long isolated continent, the naming of several monotypic genera and a plethora of species have clouded both the phylogenetical and biogeographical relation- ships with other thiarids, in particular in Southeast Asia, thus hampering insight into the evolution of Australian taxa and their natural history. Based on own collections during five expeditions to various regions in Australia between 2002 and 2007, the study of rele- vant type material and the comparison with (mostly shell) material from major Australian museum collections, we describe and document here the morphology (of adults and juve- niles) and radulae of all relevant thiarid taxa, discussing the taxonomical implications and nomenclatural consequences. Presenting comprehensive compilations of the occurrences for all Australian thiarid species, we document their geographical distribution (based on over 900 records) with references ranging from continent-wide to drainage-based pat- terns. We morphologically identify a total of eleven distinct species (also corroborated as distinct clades by molecular genetic data, to be reported elsewhere), of which six species are endemic to Australia, viz. -
Phylogeny of the Caenogastropoda (Mollusca), Based on Comparative Morphologryegister Login
Phylogeny of the Caenogastropoda (Mollusca), based on comparative morphologRyegister Login CURRENT ARCHIVES ANNOUNCEMENTS ABOUT Search VOL 42 NO 4 HOME ARCHIVES (2011) Original Article Phylogeny of the Caenogastropoda (Mollusca), based on comparative morphology Luiz Ricardo L. Simone Museu de Zoologia Universidade de São Paulo DOI: https://doi.org/10.11606/issn.2176-7793.v42i4p161-323 ABSTRACT The systematics, classification and phylogeny of the Caenogastropoda are revised based on an analysis of the morphology of representatives of all branches. The basis of this work is the detailed examination of the morphology of 305 species, most of which are reported on in detail elsewhere. Representatives of most caenogastropod families were included (comprising 270 species), and 35 outgroup taxa. A phylogenetic analysis based upon 676 morphological characters, with 2291 states (1915 of which are apomorphic states), is presented. The characters comprise every organ system and many are discussed in detail. The polarization is based on a pool of non-caenogastropods, comprising 27 representatives of Heterobranchia, Neritimorpha, Vetigastropoda, Cocculiniformia and Patellogastropoda. Additionally, eight representatives of other classes are also included. The root is based on the representative of Polyplacophora. A few characters were included in order to organize the outgroups, to find the position of Caenogastropoda among them, and to find the synapomorphies of Caenogastropoda. A strict consensus cladogram of the 48 most parsimonious trees (Fig. 20; length of 3036, CI = 51 and RI = 94) is presented, a synopsis of which is: ((((((Cyclophoroidea2 (Ampullarioidea5 (Viviparoidea15 (Cerithioidea19 (Rissooidea41 (Stromboidea47 (Calyptraeoidea67 (Naticoidea97 (Cypraeoidea118 (Tonnoidea149 (Conoidea179 (Cancellarioidea222 – Muricoidea212)))))))))))) HeterobranchiaV) NeritimorphaU) VetigastropodaL) CocculiniformiaJ) Patellogastropoda) (superscripts indicating the nodes at Fig. -
Simnia Hiscocki
Molluscan Research 31(3): 167–175 ISSN 1323-5818 http://www.mapress.com/mr/ Magnolia Press A new species of Simnia from England (Caenogastropoda: Ovulidae) FELIX LORENZ1* & CHRISTIAN MELAUN2 1 Chiapponi-Lorenz Seashell Foundation (CLSF), Via Aspromonte 22, 23900 Lecco, Italy. 2 Biodiversity and Climate Research Centre (BiK-F), Medical Biodiversity and Parasitology, Senckenberganlage 25, 60325 Frankfurt am Main, Germany. *Corresponding author—Email: [email protected] Abstract A new species of Ovulidae, Simnia hiscocki, is described from the Cornwall Peninsula, England, and compared with Simnia patula occurring in the same area, from which it differs in shell- and radula-morphological features as well as ecological fea- tures. DNA analysis suggests that it is a very young species whose host-specificity to Eunicella verrucosa makes it a poten- tially useful species for monitoring sea-temperature-change. Key words: Ovulidae, Simnia, new sister species, Plymouth, radula differences, host-specific, climate change Introduction parallel to the shell's axis respectively), the relation between the distance between the bulge of the columella and the outer The family Ovulidae comprises more than 200 species side as opposed to the greatest dimension of the bulge (c) and distributed widely across tropical and sub-tropical seas the distance from the columellar bulge the to the outer lip (a) (Lorenz and Fehse 2009). Simnia patula (Pennant, 1777) is was examined (Fig. 1). an exception in this mainly tropical family, as it inhabits the Genomic DNA was isolated from tissue samples cold waters of the northern Atlantic along the coasts of (mantle or foot fragments) of five specimens of the species England and Norway.