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Morphological Variations of the Shell of the Bivalve Lucina Pectinata
I S S N 2 3 47-6 8 9 3 Volume 10 Number2 Journal of Advances in Biology Morphological variations of the shell of the bivalve Lucina pectinata (Gmelin, 1791) Emma MODESTIN PhD of Biogeography, zoology and Ecology University of the French Antilles, UMR AREA DEV ABSTRACT In Martinique, the species Lucina pectinata (Gmelin, 1791) is called "mud clam, white clam or mangrove clam" by bivalve fishermen depending on the harvesting environment. Indeed, the individuals collected have differences as regards the shape and colour of the shell. The hypothesis is that the shape of the shell of L. pectinata (P. pectinatus) shows significant variations from one population to another. This paper intends to verify this hypothesis by means of a simple morphometric study. The comparison of the shape of the shell of individuals from different populations was done based on samples taken at four different sites. The standard measurements (length (L), width or thickness (E - épaisseur) and height (H)) were taken and the morphometric indices (L/H; L/E; E/H) were established. These indices of shape differ significantly among the various populations. This intraspecific polymorphism of the shape of the shell of P. pectinatus could be related to the nature of the sediment (granulometry, density, hardness) and/or the predation. The shells are significantly more elongated in a loose muddy sediment than in a hard muddy sediment or one rich in clay. They are significantly more convex in brackish environments and this is probably due to the presence of more specialised predators or of more muddy sediments. Keywords Lucina pectinata, bivalve, polymorphism of shape of shell, ecology, mangrove swamp, French Antilles. -
The Heterodiaspory of Capsella Bursa-Pastoris {Brassicaceae)
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Phyton, Annales Rei Botanicae, Horn Jahr/Year: 2003 Band/Volume: 43_2 Autor(en)/Author(s): Teppner Herwig Artikel/Article: The Heterodiaspory of Capsella bursa-pastoris (Brassicaceae). 381-391 ©Verlag Ferdinand Berger & Söhne Ges.m.b.H., Horn, Austria, download unter www.biologiezentrum.at Phyton (Horn, Austria) Vol. 43 Fasc. 2 381-391 29. 12. 2003 The Heterodiaspory of Capsella bursa-pastoris {Brassicaceae) By Herwig TEPPNER *) With 2 Figures Received June 20, 2003 Key words: Brassicaceae, Cruciferae, Capsella bursa-pastoris. -Dispersal, fruits, heterodiaspory, polydiaspory. - Terminology. Summary TEPPNER H. 2003. The heterodiaspory of Capsella bursa-pastoris {Brassicaceae). - Phyton (Horn, Austria) 43 (2): 381-391, 2 figures. - English with German summary. In Capsella bursa-pastoris (L.) MEDIK. two kinds of diaspores are formed: 1) the valves of the silicle containing an apical seed (i.e. the uppermost seed of each locule), which are therefore one-seeded mericarps and 2) the true (naked) seeds. Finally, of the fallen valves c. 70 % contained the apical seed; these can be easily dispersed by water and wind. Terms for heteromorphic diaspores are briefly discussed. As regards to terminology, it is proposed to restrict the term heterodiaspory, in the sense of the definition of MÜLLER-SCHNEIDER & LHOTSKÄ 1972: 408, for such cases with diaspores of different levels of morphological organisation on one individual. As an encom- passing term for heterocarpy, heteromericarpy, heterospermy, heterodiaspory etc. the older term polydiaspory (MÜLLER 1955:16) can be used. Zusammenfassung TEPPNER H. 2003. Die Heterodiasporie von Capsella bursa-pastoris (Brassica- ceae). -
Mollusca) Del Tortoniense Superior De Arroyo Trujillo, Cantillana (Sevilla
SPANISH JOURNAL OF PALAEONTOLOGY Estudio paleontológico de los bivalvos (Mollusca) del Tortoniense superior de Arroyo Trujillo, Cantillana (Sevilla) Joaquín CÁRDENAS1*, Ildefonso BAJO2 & M. Vicente MAESTRE2 1 Plaza de España, 10, 1º D, 41702 Dos Hermanas, Sevilla; [email protected] 2 Museo de Alcalá de Guadaíra, Sección de Paleontología, c/ Juan Pérez Díaz s/n, 41500, Alcalá de Guadaíra, Sevilla * Corresponding author Cárdenas, J., Bajo, I. & Maestre, M.V. 2017. Estudio paleontológico de los bivalvos (Mollusca) del Tortoniense superior de Arroyo Trujillo, Cantillana (Sevilla). [Palaeontological study of the bivalves (Mollusca) of the late Tortonian of Arroyo Trujillo, Cantillana (Sevilla)]. Spanish Journal of Palaeontology, 32 (2), 367-386. Manuscript received 19 April 2017 © Sociedad Española de Paleontología ISSN 2255-0550 Manuscript accepted 21 August 2017 RESUMEN ABSTRACT En este trabajo se actualiza la estratigrafía y se estudia la In this work, the stratigraphy of Arroyo Trujillo (Cantillana, comunidad de bivalvos fósil del yacimiento Arroyo Trujillo Sevilla) site, in the Guadalquivir Basin, is updated and the (Cantillana, Sevilla) en la zona central de la Cuenca del fossil bivalve community is studied. A new stratigraphic Guadalquivir. Se ha realizado una nueva columna estratigráfi ca, section has been made, differentiating four sections y en ella se diferencian cuatro tramos correspondientes al encompassed in the Transgressive Basal Complex of the upper Complejo Basal Transgresivo del Tortoniense superior. Han Tortonian. One hundred and thirty two bivalves have been sido identifi cados 132 taxones de bivalvos, diez de los cuales identifi ed, 10 out of them are mentioned for the fi rst time in se citan por primera vez en la península Ibérica. -
Contributions to the Knowledge of the Ovulidae. XVI. the Higher Systematics
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Spixiana, Zeitschrift für Zoologie Jahr/Year: 2007 Band/Volume: 030 Autor(en)/Author(s): Fehse Dirk Artikel/Article: Contributions to the knowledge of the Ovulidae. XVI. The higher systematics. (Mollusca: Gastropoda) 121-125 ©Zoologische Staatssammlung München/Verlag Friedrich Pfeil; download www.pfeil-verlag.de SPIXIANA 30 1 121–125 München, 1. Mai 2007 ISSN 0341–8391 Contributions to the knowledge of the Ovulidae. XVI. The higher systematics. (Mollusca: Gastropoda) Dirk Fehse Fehse, D. (2007): Contributions to the knowledge of the Ovulidae. XVI. The higher systematics. (Mollusca: Gastropoda). – Spixiana 30/1: 121-125 The higher systematics of the family Ovulidae is reorganised on the basis of re- cently published studies of the radulae, shell and animal morphology and the 16S rRNA gene. The family is divided into four subfamilies. Two new subfamilîes are introduced as Prionovolvinae nov. and Aclyvolvinae nov. The apomorphism and the result of the study of the 16S rRNA gene are contro- versally concerning the Pediculariidae. Therefore, the Pediculariidae are excluded as subfamily from the Ovulidae. Dirk Fehse, Nippeser Str. 3, D-12524 Berlin, Germany; e-mail: [email protected] Introduction funiculum. A greater surprise seemed to be the genetically similarity of Ovula ovum (Linneaus, 1758) In conclusion of the recently published studies on and Volva volva (Linneaus, 1758) in fi rst sight but a the shell morphology, radulae, anatomy and 16S closer examination of the shells indicates already rRNA gene (Fehse 2001, 2002, Simone 2004, Schia- that O. -
Do Singapore's Seawalls Host Non-Native Marine Molluscs?
Aquatic Invasions (2018) Volume 13, Issue 3: 365–378 DOI: https://doi.org/10.3391/ai.2018.13.3.05 Open Access © 2018 The Author(s). Journal compilation © 2018 REABIC Research Article Do Singapore’s seawalls host non-native marine molluscs? Wen Ting Tan1, Lynette H.L. Loke1, Darren C.J. Yeo2, Siong Kiat Tan3 and Peter A. Todd1,* 1Experimental Marine Ecology Laboratory, Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Block S3, #02-05, Singapore 117543 2Freshwater & Invasion Biology Laboratory, Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Block S3, #02-05, Singapore 117543 3Lee Kong Chian Natural History Museum, Faculty of Science, National University of Singapore, 2 Conservatory Drive, Singapore 117377 *Corresponding author E-mail: [email protected] Received: 9 March 2018 / Accepted: 8 August 2018 / Published online: 17 September 2018 Handling editor: Cynthia McKenzie Abstract Marine urbanization and the construction of artificial coastal structures such as seawalls have been implicated in the spread of non-native marine species for a variety of reasons, the most common being that seawalls provide unoccupied niches for alien colonisation. If urbanisation is accompanied by a concomitant increase in shipping then this may also be a factor, i.e. increased propagule pressure of non-native species due to translocation beyond their native range via the hulls of ships and/or in ballast water. Singapore is potentially highly vulnerable to invasion by non-native marine species as its coastline comprises over 60% seawall and it is one of the world’s busiest ports. The aim of this study is to investigate the native, non-native, and cryptogenic molluscs found on Singapore’s seawalls. -
Nomenclatural Studies Toward a World List of Diptera Genus-Group Names
Nomenclatural studies toward a world list of Diptera genus-group names. Part V Pierre-Justin-Marie Macquart Evenhuis, Neal L.; Pape, Thomas; Pont, Adrian C. DOI: 10.11646/zootaxa.4172.1.1 Publication date: 2016 Document version Publisher's PDF, also known as Version of record Document license: CC BY Citation for published version (APA): Evenhuis, N. L., Pape, T., & Pont, A. C. (2016). Nomenclatural studies toward a world list of Diptera genus- group names. Part V: Pierre-Justin-Marie Macquart. Magnolia Press. Zootaxa Vol. 4172 No. 1 https://doi.org/10.11646/zootaxa.4172.1.1 Download date: 02. Oct. 2021 Zootaxa 4172 (1): 001–211 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Monograph ZOOTAXA Copyright © 2016 Magnolia Press ISSN 1175-5334 (online edition) http://doi.org/10.11646/zootaxa.4172.1.1 http://zoobank.org/urn:lsid:zoobank.org:pub:22128906-32FA-4A80-85D6-10F114E81A7B ZOOTAXA 4172 Nomenclatural Studies Toward a World List of Diptera Genus-Group Names. Part V: Pierre-Justin-Marie Macquart NEAL L. EVENHUIS1, THOMAS PAPE2 & ADRIAN C. PONT3 1 J. Linsley Gressitt Center for Entomological Research, Bishop Museum, 1525 Bernice Street, Honolulu, Hawaii 96817-2704, USA. E-mail: [email protected] 2 Natural History Museum of Denmark, Universitetsparken 15, 2100 Copenhagen, Denmark. E-mail: [email protected] 3Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK. E-mail: [email protected] Magnolia Press Auckland, New Zealand Accepted by D. Whitmore: 15 Aug. 2016; published: 30 Sept. 2016 Licensed under a Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0 NEAL L. -
THE LISTING of PHILIPPINE MARINE MOLLUSKS Guido T
August 2017 Guido T. Poppe A LISTING OF PHILIPPINE MARINE MOLLUSKS - V1.00 THE LISTING OF PHILIPPINE MARINE MOLLUSKS Guido T. Poppe INTRODUCTION The publication of Philippine Marine Mollusks, Volumes 1 to 4 has been a revelation to the conchological community. Apart from being the delight of collectors, the PMM started a new way of layout and publishing - followed today by many authors. Internet technology has allowed more than 50 experts worldwide to work on the collection that forms the base of the 4 PMM books. This expertise, together with modern means of identification has allowed a quality in determinations which is unique in books covering a geographical area. Our Volume 1 was published only 9 years ago: in 2008. Since that time “a lot” has changed. Finally, after almost two decades, the digital world has been embraced by the scientific community, and a new generation of young scientists appeared, well acquainted with text processors, internet communication and digital photographic skills. Museums all over the planet start putting the holotypes online – a still ongoing process – which saves taxonomists from huge confusion and “guessing” about how animals look like. Initiatives as Biodiversity Heritage Library made accessible huge libraries to many thousands of biologists who, without that, were not able to publish properly. The process of all these technological revolutions is ongoing and improves taxonomy and nomenclature in a way which is unprecedented. All this caused an acceleration in the nomenclatural field: both in quantity and in quality of expertise and fieldwork. The above changes are not without huge problematics. Many studies are carried out on the wide diversity of these problems and even books are written on the subject. -
Phylogeny of Malpighiaceae: Evidence from Chloroplast NDHF and TRNL-F Nucleotide Sequences
Phylogeny of Malpighiaceae: Evidence from Chloroplast NDHF and TRNL-F Nucleotide Sequences The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Davis, Charles C., William R. Anderson, and Michael J. Donoghue. 2001. Phylogeny of Malpighiaceae: Evidence from chloroplast NDHF and TRNL-F nucleotide sequences. American Journal of Botany 88(10): 1830-1846. Published Version http://dx.doi.org/10.2307/3558360 Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:2674790 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA American Journal of Botany 88(10): 1830±1846. 2001. PHYLOGENY OF MALPIGHIACEAE: EVIDENCE FROM CHLOROPLAST NDHF AND TRNL-F NUCLEOTIDE SEQUENCES1 CHARLES C. DAVIS,2,5 WILLIAM R. ANDERSON,3 AND MICHAEL J. DONOGHUE4 2Department of Organismic and Evolutionary Biology, Harvard University Herbaria, 22 Divinity Avenue, Cambridge, Massachusetts 02138 USA; 3University of Michigan Herbarium, North University Building, Ann Arbor, Michigan 48109-1057 USA; and 4Department of Ecology and Evolutionary Biology, Yale University, P.O. Box 208106, New Haven, Connecticut 06520 USA The Malpighiaceae are a family of ;1250 species of predominantly New World tropical ¯owering plants. Infrafamilial classi®cation has long been based on fruit characters. Phylogenetic analyses of chloroplast DNA nucleotide sequences were analyzed to help resolve the phylogeny of Malpighiaceae. A total of 79 species, representing 58 of the 65 currently recognized genera, were studied. -
A Revision and Phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae)
A peer-reviewed open-access journal ZooKeysJewelled 619: 103–146 spider (2016) flies of North America: a revision and phylogeny ofEulonchus Gerstaecker... 103 doi: 10.3897/zookeys.619.8249 RESEARCH ARTICLE http://zookeys.pensoft.net Launched to accelerate biodiversity research Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae) Christopher J. Borkent1, Jessica P. Gillung1, Shaun L. Winterton1 1 California State Collection of Arthropods, California Department of Food and Agriculture, 3294 Mea- dowview Road, Sacramento, CA 95832, USA Corresponding author: Christopher J. Borkent ([email protected]) Academic editor: T. Dikow | Received 24 February 2016 | Accepted 2 September 2016 | Published 27 September 2016 http://zoobank.org/DEE67859-64AC-4C3F-8DF7-67A7BE1868FB Citation: Borkent CJ, Gillung JP, Winterton SL (2016) Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae). ZooKeys 619: 103–146. doi: 10.3897/zookeys.619.8249 Abstract The spider fly genus Eulonchus Gerstaecker is found throughout the Nearctic Region. Six species are recognized and intraspecific morphological variation is documented in several species. A phylogeny of Eulonchus based on DNA sequence data of three molecular markers (COI, CAD, and 16S) is presented and relationships of species are discussed in the light of biogeography and host usage. All six species of Eulonchus are redescribed using natural language descriptions exported from a character matrix, and a key to species is presented. Lectotypes are designated for E. sapphirinus Osten Sacken, E. smaragdinus Gerstaecker, and E. tristis Loew. Keywords Antrodiaetidae, Euctenizidae, spider parasitoid, phylogeny, small-headed fly, tarantula, biodiversity, cy- bertaxonomy, Lucid Introduction Acroceridae are a small group of flies commonly known as spider flies or small-headed flies. -
Constructional Morphology of Cerithiform Gastropods
Paleontological Research, vol. 10, no. 3, pp. 233–259, September 30, 2006 6 by the Palaeontological Society of Japan Constructional morphology of cerithiform gastropods JENNY SA¨ LGEBACK1 AND ENRICO SAVAZZI2 1Department of Earth Sciences, Uppsala University, Norbyva¨gen 22, 75236 Uppsala, Sweden 2Department of Palaeozoology, Swedish Museum of Natural History, Box 50007, 10405 Stockholm, Sweden. Present address: The Kyoto University Museum, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan (email: [email protected]) Received December 19, 2005; Revised manuscript accepted May 26, 2006 Abstract. Cerithiform gastropods possess high-spired shells with small apertures, anterior canals or si- nuses, and usually one or more spiral rows of tubercles, spines or nodes. This shell morphology occurs mostly within the superfamily Cerithioidea. Several morphologic characters of cerithiform shells are adap- tive within five broad functional areas: (1) defence from shell-peeling predators (external sculpture, pre- adult internal barriers, preadult varices, adult aperture) (2) burrowing and infaunal life (burrowing sculp- tures, bent and elongated inhalant adult siphon, plough-like adult outer lip, flattened dorsal region of last whorl), (3) clamping of the aperture onto a solid substrate (broad tangential adult aperture), (4) stabilisa- tion of the shell when epifaunal (broad adult outer lip and at least three types of swellings located on the left ventrolateral side of the last whorl in the adult stage), and (5) righting after accidental overturning (pro- jecting dorsal tubercles or varix on the last or penultimate whorl, in one instance accompanied by hollow ventral tubercles that are removed by abrasion against the substrate in the adult stage). Most of these char- acters are made feasible by determinate growth and a countdown ontogenetic programme. -
Molluscan Subfossil Assemblages Reveal the Long-Term Deterioration of Coral Reef Environments in Caribbean Panama ⇑ Katie L
Marine Pollution Bulletin xxx (2015) xxx–xxx Contents lists available at ScienceDirect Marine Pollution Bulletin journal homepage: www.elsevier.com/locate/marpolbul Molluscan subfossil assemblages reveal the long-term deterioration of coral reef environments in Caribbean Panama ⇑ Katie L. Cramer a,b, , Jill S. Leonard-Pingel c, Félix Rodríguez a, Jeremy B.C. Jackson b,a,d a Smithsonian Tropical Research Institute, Balboa, Panama b Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0244, United States c Washington and Lee University, Rm 123 Science Addition, Lexington, VA 24450, United States d Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, United States article info abstract Article history: Caribbean reef corals have declined sharply since the 1980s, but the lack of prior baseline data has hin- Received 24 February 2015 dered identification of drivers of change. To assess anthropogenic change in reef environments over the Revised 9 May 2015 past century, we tracked the composition of subfossil assemblages of bivalve and gastropod mollusks Accepted 12 May 2015 excavated from pits below lagoonal and offshore reefs in Bocas del Toro, Panama. The higher prevalence Available online xxxx of (a) infaunal suspension-feeding bivalves and herbivorous and omnivorous gastropods in lagoons and (b) epifaunal and suspension-feeding bivalves and carnivorous and suspension-feeding gastropods off- Keywords: shore reflected the greater influence of land-based nutrients/sediments within lagoons. Temporal Barbatia cancellaria changes indicated deteriorating environmental conditions pre-1960 in lagoons and post-1960 offshore, Bocas del Toro Dendostrea frons with offshore communities becoming more similar to lagoonal ones since 1960. -
Antonio José Cavanilles (1745-1804)
ANTONIO JOSÉ CAVANILLES (1745-1804) Segundo centenario de la muerte de un gran botánico ANTONIO JOSÉ CAVANILLES (1745-1804) Segundo centenario de la muerte de un gran botánico Valencia Real Sociedad Económica de Amigos del País 2004 1. Dalia (cultivar de Dahlia pinnata Cav.). Según el sistema internacional de clasificación, pertenece al grupo “flor semicactus”. 2. Rosa (Rosa x centifolia L.). 3. Amapola (Papaver rhoeas L.). Variedad de flor doble. 4. Tulipán (variedad de jardín de Tulipa gesneriana L.) 5. Áster de China (Callistephus chinensis L.) = Nees (Aster chinensis L.), variedad de flor doble. 6. Jazmín oloroso (Jasminum odoratissimum L.). 7. Adormidera (Papaver somniferum L.). Variedad de jardín. 8. Crisantemo (Chysanthemum x indicum L.). 9. Clavel (Dianthus caryophyllus L.). 10. Perpetua (Helichrysum italicum (Roth) G. Don = Gnaphalium italicum Roth.). 11. Hortensia (Hydrangea macrophylla (Thunb.) (Ser. = Viburnum macrophyllum Thunb.) 12. Fucsia (Fuchsia fulgens DC.). Identificación y esquema por María José López Terrada. Edita: Real Sociedad Económica de Amigos del País Valencia, 2004 ISBN: 84-482-3874-5 Depósito legal: V. 4.381 - 2004 Artes Gráficas Soler, S. L. - La Olivereta, 28 - 46018 Valencia ÍNDICE Presentación de Francisco R. Oltra Climent. Director de la Real Socie- dad Económica de Amigos del País de Valencia ........................... 1 La obra de Cavanilles en la “Económica”, de Manuel Portolés i Sanz. Coordinador por la Real Sociedad Económica de Amigos del País de Valencia de “2004: año de Cavanilles” ...................................... 3 Botànic Cavanilles per sempre, de Francisco Tomás Vert. Rector de la Universitat de València ........................................................ 5 Palabras de Rafael Blasco Castany. Conseller de Territorio y Vivienda de la Generalitat Valenciana .....................................................