DOCSLIB.ORG

Planorbidae) from New Mexico

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Planorbidae) from New Mexico FRONT COVER—See Fig. 2B, p. 7. Circular 194 New Mexico Bureau of Mines & Mineral Resources A DIVISION OF NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY Pecosorbis, a new genus of fresh-water snails (Planorbidae) from New Mexico Dwight W. Taylor 98 Main St., #308, Tiburon, California 94920 SOCORRO 1985 iii Contents ABSTRACT 5 INTRODUCTION 5 MATERIALS AND METHODS 5 DESCRIPTION OF PECOSORBIS 5 PECOSORBIS. NEW GENUS 5 PECOSORBIS KANSASENSIS (Berry) 6 LOCALITIES AND MATERIAL EXAMINED 9 Habitat 12 CLASSIFICATION AND RELATIONSHIPS 12 DESCRIPTION OF MENETUS 14 GENUS MENETUS H. AND A. ADAMS 14 DESCRIPTION OF MENETUS CALLIOGLYPTUS 14 REFERENCES 17 Figures 1—Pecosorbis kansasensis, shell 6 2—Pecosorbis kansasensis, shell removed 7 3—Pecosorbis kansasensis, penial complex 8 4—Pecosorbis kansasensis, reproductive system 8 5—Pecosorbis kansasensis, penial complex 9 6—Pecosorbis kansasensis, ovotestis and seminal vesicle 10 7—Pecosorbis kansasensis, prostate 10 8—Pecosorbis kansasensis, penial complex 10 9—Pecosorbis kansaensis, composite diagram of penial complex 10 10—Pecosorbis kansasensis, distribution map 11 11—Menetus callioglyptus, reproductive system 15 12—Menetus callioglyptus, penial complex 15 13—Menetus callioglyptus, penial complex 16 14—Planorbella trivolvis lenta, reproductive system 16 Tables 1—Comparison of Menetus and Pecosorbis 13 5 Abstract Pecosorbis, new genus of Planorbidae, subfamily Planorbulinae, is established for Biomphalaria kansasensis Berry. The species has previously been known only as a Pliocene fossil, but now is recognized in the Quaternary of the southwest United States, and living in the Pecos Valley of New Mexico. Pecosorbis is unusual because of its restricted distribution and habitat in seasonal rock pools. Most similar to Menetus, it differs in having a preputial organ with an external duct, no spermatheca, and a penial sac that is mostly eversible. Introduction The novel discovery described here is significant in for possible classification as endangered or threat- various ways. Within the context of molluscan studies, ened. Pecosorbis indeed qualifies as having restricted scarcely anyone would have expected this new genus in distribution, because there are only two living pop- the United States. Fresh-water snails of the family ulations known thus far. It is the only genus of mol- Planorbidae have been studied for a long time in North luscs limited to New Mexico. America, and Pecosorbis is markedly distinct in Additional field support came from the New Mexico taxonomic characters. Its habitat in seasonal pools and Bureau of Mines and Mineral Resources through its restricted distribution are unusual. Furthermore, it Frank E. Kottlowski, Director, and John W. Hawley. proves to be a "living fossil," a Pliocene spedes thought This support has been planned for studies in inter- to be extinct. Although several Pleistocene species of preting environmental significance of fossil mollusc fresh-water molluscs have been discovered alive, this is shells in the state. The discovery of Pecosorbis, the first occasion in North America when a Tertiary reclassification of the Pliocene species, and form has been recognized as living. Once again shell recognition that Pecosorbis is widespread as a features in Planorbidae are shown to give little clue Quaternary fossil, even though so limited today, casts to relationships, and the original generic allocation a new light on the known fossils. of the fossils is revised significantly. At the University of Colorado Museum, Shi-Kuei Field work in New Mexico was supported by two Wu kindly provided access to collections and field agencies whose interests have been amazingly re- notes by Junius Henderson. Special gratitude is due to warded by discovery of Pecosorbis. Principal support A. L. Metcalf, University of Texas at El Paso, for came from the New Mexico Department of Game and loaning specimens (UTEP catalog numbers) collected Fish Endangered Species Program through John P. by him that represent most of the known localities of Hubbard. These studies were intended to identify Pecosorbis. species of restricted distribution in the state, as a basis Materials and methods The specimens described and illustrated were anes- and other aquatic pulmonate snails is that often the thetized with menthol, fixed in FAA (formalin–acetic turgor induced by menthol is sufficient to cause ex- acid–alcohol), and transferred to 70% ethanol. One trusion of the penial complex. Drawings are camera- advantage of using menthol as an anesthetic in these lucida sketches except as indicated. Description of Pecosorbis Family PLANORBIDAE most of penial sac everted in copulation. Seminal ves- Subfamily PLANORBULINAE icle compact, without acute projections or numerous PECOSORBIS, new genus lobes. No spermatheca. Type species—Biomphalaria kansasensis Berry, 1966. Generic diagnosis—Planorbidae with unbranched Distribution—Living in Pecos River valley, New and generally single or paired diverticula of ovotestis; Mexico; late Pleistocene–Holocene in southern New and narrowly elongate prostate with 4-5 diverticula in Mexico, Trans-Pecos, Texas, and southeastern Ari- cross section. Penial complex with a preputial organ zona; Pliocene, southwestern Kansas. One species. projecting from the preputium, and art external duct Etymology—After the Pecos River, and Latin orbis, from that organ to the penial sac; preputium and m., circle. The generic name is apt in describing its 6 modern distribution, and kansasensis was apt for the developed prior to both variceal ridges. This feature fossil as known previously. The combination is in- varies within samples. Even shells with no varix may congruous, however, as the Pecos River is nowhere in have irregular riblets. Shell sculpture is therefore in- Kansas. terpreted as a specific character. In the modern sam- Description and illustrations of morphology are ples from southeastern New Mexico shells may be based on a large series from Little McKittrick Draw, found with 0, 1, 2, or 3 varices, and development of New Mexico. riblets may occur prior to the last varix only, or on earlier parts of the shell as well, or not at all. Shell formed immediately after a varix lacks riblets, as was PECOSORBIS KANSASENSIS (Berry, 1966) noted in the original description. Figs. 1-11 Some of the Pleistocene and Holocene specimens seen attain as large a size as those in the original Segmentina obstructa (Mor.)?: Walker, 1915, p. 4; drift of Pliocene sample, whereas specimens in the two mod- Cuervo River, San Miguel County, New Mexico. Planorbula armigera (Say) [misidentified]: Leonard and Frye, ern series from Eddy County, New Mexico, do not. A 1962, p. 21, p1. 2, figs. 10-12; Pecos River alluvium, Pleistocene, subsample of 10 larger specimens from the original Ward County, Texas. Pliocene collection measured 4.82 mm in greatest di- Biomphalaria kansasensis sp.n.: Berry, 1966, in Berry and ameter (range 4.6-5.3), with 4.0 whorls (range 33/44). Miller, p. 266, figs. 3-5; Spring Creek fauna, Meade County, Kansas. Taylor, 1966, p. 9; paleoecological interpretation. Corresponding measurements of 10 larger specimens Promenetus umbilicatellus (Cockerell) [misidentified]: Metcalf, from Little McKittrick Canyon are 3.59 mm in 1967, p. 38; late Pleistocene and Holocene, Rio Grande valley, diameter (3.3-3.8), with 3.4 whorls (3 1/4 - 3 3/4); and New Mexico-Texas. from Last Chance Canyon 3.84 mm (3.6-4.0), with Biomphalaria sp.: Metcalf, 1969, p. 159; late Quaternary, Rio 3I/7-33/4 whorls. Grande valley, New Mexico-Texas. Seager et al., 1975, p. 24; late Pleistocene, Rio Grande valley, Dona Ana County, New Mexico. Compared to Promenetus umbilicatellus, ? Menetus cf. portlandensis Baker: Leonard and Frye, 1975, p. Pecosorbis has a shell of greater relative height; the 21; drift of Arroyo del Macho, Chaves County, New Mexico. surface texture is silky to shiny, not dull; and Biomphalaria obstructa [misidentified]: Metcalf, 1977, pp. 57, sculpture is usually stronger. P. umbilicatellus often 60, 65; late Pleistocene, Toyah, Reeves County, and Finlay Mountains, Hudspeth County, Texas. Metcalf, 1982, p. 51; late has fine riblets also, but these are less prominent, Pleistocene, Toyah, Reeves County, Texas. occur over more of the shell, and do not show discontinuity after varix formation. Shell (Fig. 1) Animal (Fig. 2A, B) The various modern and fossil samples examined include several large series that agree closely with the Pigmentation is sparse, consisting of scattered original description and illustrations by Berry. Among wisps of melanin in the head-foot and distal part of fresh-water pulmonates, the species is relatively less the mantle. Mostly oval or narrowly elongate melanin variable and only supplementary notes will be given. patches over the pulmonary cavity are visible readily Periostracum pale tan, the surface texture silky or through the shell. After removal of the shell, addi- even shiny. Sharply defined, irregular riblets that de- tional pigmentation can be seen in the form of sparse velop gradually on the later part of the body whorl are melanin wisps on some organs; the anterior chamber a characteristic feature of the species. Often shells of the stomach is the darkest element of the body. have two variceal ridges, and there may be riblets Many internal features can be seen even without dis- section. Reproductive system (Figs. 3-9; 10 specimens dissected) Hermaphroditic portion—Ovotestis with flask- shaped diverticula that are unbranched, arranged proximally in a single series, then arranged
Load more

Recommended publications
  • CEPHALOPODS 688 Cephalopods
    click for previous page CEPHALOPODS 688 Cephalopods Introduction and GeneralINTRODUCTION Remarks AND GENERAL REMARKS by M.C. Dunning, M.D. Norman, and A.L. Reid iving cephalopods include nautiluses, bobtail and bottle squids, pygmy cuttlefishes, cuttlefishes, Lsquids, and octopuses. While they may not be as diverse a group as other molluscs or as the bony fishes in terms of number of species (about 600 cephalopod species described worldwide), they are very abundant and some reach large sizes. Hence they are of considerable ecological and commercial fisheries importance globally and in the Western Central Pacific. Remarks on MajorREMARKS Groups of CommercialON MAJOR Importance GROUPS OF COMMERCIAL IMPORTANCE Nautiluses (Family Nautilidae) Nautiluses are the only living cephalopods with an external shell throughout their life cycle. This shell is divided into chambers by a large number of septae and provides buoyancy to the animal. The animal is housed in the newest chamber. A muscular hood on the dorsal side helps close the aperture when the animal is withdrawn into the shell. Nautiluses have primitive eyes filled with seawater and without lenses. They have arms that are whip-like tentacles arranged in a double crown surrounding the mouth. Although they have no suckers on these arms, mucus associated with them is adherent. Nautiluses are restricted to deeper continental shelf and slope waters of the Indo-West Pacific and are caught by artisanal fishers using baited traps set on the bottom. The flesh is used for food and the shell for the souvenir trade. Specimens are also caught for live export for use in home aquaria and for research purposes.
    [Show full text]
  • Common Name: Chiton Class: Polyplacophora
    Common Name: Chiton Class: Polyplacophora Scrapes algae off rock with radula 8 Overlapping Plates Phylum? Mollusca Class? Gastropoda Common name? Brown sea hare Class? Scaphopoda Common name? Tooth shell or tusk shell Mud Tentacle Foot Class? Gastropoda Common name? Limpet Phylum? Mollusca Class? Bivalvia Class? Gastropoda Common name? Brown sea hare Phylum? Mollusca Class? Gastropoda Common name? Nudibranch Class? Cephalopoda Cuttlefish Octopus Squid Nautilus Phylum? Mollusca Class? Gastropoda Most Bivalves are Filter Feeders A B E D C • A: Mantle • B: Gill • C: Mantle • D: Foot • E: Posterior adductor muscle I.D. Green: Foot I.D. Red Gills Three Body Regions 1. Head – Foot 2. Visceral Mass 3. Mantle A B C D • A: Radula • B: Mantle • C: Mouth • D: Foot What are these? Snail Radulas Dorsal HingeA Growth line UmboB (Anterior) Ventral ByssalC threads Mussel – View of Outer Shell • A: Hinge • B: Umbo • C: Byssal threads Internal Anatomy of the Bay Mussel A B C D • A: Labial palps • B: Mantle • C: Foot • D: Byssal threads NacreousB layer Posterior adductorC PeriostracumA muscle SiphonD Mantle Byssal threads E Internal Anatomy of the Bay Mussel • A: Periostracum • B: Nacreous layer • C: Posterior adductor muscle • D: Siphon • E: Mantle Byssal gland Mantle Gill Foot Labial palp Mantle Byssal threads Gill Byssal gland Mantle Foot Incurrent siphon Byssal Labial palp threads C D B A E • A: Foot • B: Gills • C: Posterior adductor muscle • D: Excurrent siphon • E: Incurrent siphon Heart G F H E D A B C • A: Foot • B: Gills • C: Mantle • D: Excurrent siphon • E: Incurrent siphon • F: Posterior adductor muscle • G: Labial palps • H: Anterior adductor muscle Siphon or 1.
    [Show full text]
  • The Cephalopoda
    Carl Chun THE CEPHALOPO PART I: OEGOPSIDA PART II: MYOPSIDA, OCTOPODA ATLAS Carl Chun THE CEPHALOPODA NOTE TO PLATE LXVIII Figure 7 should read Figure 8 Figure 9 should read Figure 7 GERMAN DEEPSEA EXPEDITION 1898-1899. VOL. XVIII SCIENTIFIC RESULTS QF THE GERMAN DEEPSEA EXPEDITION ON BOARD THE*STEAMSHIP "VALDIVIA" 1898-1899 Volume Eighteen UNDER THE AUSPICES OF THE GERMAN MINISTRY OF THE INTERIOR Supervised by CARL CHUN, Director of the Expedition Professor of Zoology , Leipzig. After 1914 continued by AUGUST BRAUER Professor of Zoology, Berlin Carl Chun THE CEPHALOPODA PART I: OEGOPSIDA PART II: MYOPSIDA, OCTOPODA ATLAS Translatedfrom the German ISRAEL PROGRAM FOR SCIENTIFIC TRANSLATIONS Jerusalem 1975 TT 69-55057/2 Published Pursuant to an Agreement with THE SMITHSONIAN INSTITUTION and THE NATIONAL SCIENCE FOUNDATION, WASHINGTON, D.C. Since the study of the Cephalopoda is a very specialized field with a unique and specific terminology and phrase- ology, it was necessary to edit the translation in a technical sense to insure that as accurate and meaningful a represen- tation of Chun's original work as possible would be achieved. We hope to have accomplished this responsibility. Clyde F. E. Roper and Ingrid H. Roper Technical Editors Copyright © 1975 Keter Publishing House Jerusalem Ltd. IPST Cat. No. 05452 8 ISBN 7065 1260 X Translated by Albert Mercado Edited by Prof. O. Theodor Copy-edited by Ora Ashdit Composed, Printed and Bound by Keterpress Enterprises, Jerusalem, Israel Available from the U. S. DEPARTMENT OF COMMERCE National Technical Information Service Springfield, Va. 22151 List of Plates I Thaumatolampas diadema of luminous o.rgans 95 luminous organ 145 n.gen.n.sp.
    [Show full text]
  • Historical Biogeography and Phylogeography of Indoplanorbis Exustus
    bioRxiv preprint doi: https://doi.org/10.1101/2021.05.28.446081; this version posted May 30, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Historical biogeography and phylogeography of Indoplanorbis exustus Maitreya Sil1*, Juveriya Mahveen1,2, Abhishikta Roy1,3, K. Praveen Karanth4, and Neelavara Ananthram Aravind1,5* 1 Suri Sehgal Centre for Biodiversity and Conservation, Ashoka Trust For Research In Ecology And The Environment, Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064, India 2The Department of Microbiology, St. Joseph’s College, Bangalore 560027, India 3The University of Trans-Disciplinary Health Sciences and Technology, Jarakbande Kaval, Bangalore 560064, India 4 Centre for Ecological Sciences, Indian Institute of science, Bangalore 560012, India 5Yenepoya Research Centre, Yenepoya (Deemed to be University), University Road, Derlakatte, Mangalore 575018, India *Author for correspondence [email protected] [email protected] Abstract: The history of a lineage is intertwined with the history of the landscape it resides in. Here we showcase how the geo-tectonic and climatic evolution in South Asia and surrounding landmasses have shaped the biogeographic history of Indoplanorbis exustus, a tropical Asian, freshwater, pulmonated snail. We amplified partial COI gene fragment from all over India and combined this with a larger dataset from South and Southeast Asia to carry out phylogenetic reconstruction, species delimitation analysis, and population genetic analyses. Two nuclear genes were also amplified from one individual per putative species to carry out divergence dating and ancestral area reconstruction analyses.
    [Show full text]
  • Mitochondrial Genome of Bulinus Truncatus (Gastropoda: Lymnaeoidea): Implications for Snail Systematics and Schistosome Epidemiology
    Journal Pre-proof Mitochondrial genome of Bulinus truncatus (Gastropoda: Lymnaeoidea): implications for snail systematics and schistosome epidemiology Neil D. Young, Liina Kinkar, Andreas J. Stroehlein, Pasi K. Korhonen, J. Russell Stothard, David Rollinson, Robin B. Gasser PII: S2667-114X(21)00011-X DOI: https://doi.org/10.1016/j.crpvbd.2021.100017 Reference: CRPVBD 100017 To appear in: Current Research in Parasitology and Vector-Borne Diseases Received Date: 21 January 2021 Revised Date: 10 February 2021 Accepted Date: 11 February 2021 Please cite this article as: Young ND, Kinkar L, Stroehlein AJ, Korhonen PK, Stothard JR, Rollinson D, Gasser RB, Mitochondrial genome of Bulinus truncatus (Gastropoda: Lymnaeoidea): implications for snail systematics and schistosome epidemiology, CORTEX, https://doi.org/10.1016/ j.crpvbd.2021.100017. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2021 The Author(s). Published by Elsevier B.V. Journal Pre-proof Mitochondrial genome of Bulinus truncatus (Gastropoda: Lymnaeoidea): implications for snail systematics and schistosome epidemiology Neil D. Young a,* , Liina Kinkar a, Andreas J. Stroehlein a, Pasi K. Korhonen a, J.
    [Show full text]
  • The Current Distribution Pattern of Biomphalaria Tenagophila And
    Biota Neotropica ISSN: 1676-0611 [email protected] Instituto Virtual da Biodiversidade Brasil Gardini Sanches Palasio, Raquel; Oliveira Casotti, Marcia; Cassia Rodrigues, Thamiris; Tirone Menezes, Regiane Maria; Zanotti-Magalhaes, Eliana Maria; Tuan, Roseli The current distribution pattern of Biomphalaria tenagophila and Biomphalaria straminea in the northern and southern regions of the coastal fluvial plain in the state of São Paulo Biota Neotropica, vol. 15, núm. 3, julio-septiembre, 2015, pp. 1-6 Instituto Virtual da Biodiversidade Campinas, Brasil Available in: http://www.redalyc.org/articulo.oa?id=199142314012 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Biota Neotropica 15(3): 1–6, 2015 www.scielo.br/bn short communication The current distribution pattern of Biomphalaria tenagophila and Biomphalaria straminea in the northern and southern regions of the coastal fluvial plain in the state of Sa˜o Paulo Raquel Gardini Sanches Palasio1, Marcia Oliveira Casotti1, Thamiris Cassia Rodrigues1, Regiane Maria Tirone Menezes2, Eliana Maria Zanotti-Magalhaes3 & Roseli Tuan1,4 1Superintendencia de Controle de Endemias, Laborato´rio de Bioquı´mica e Biologia Molecular Sa˜o Paulo, SP, Brazil. 2Superintendencia de Controle de Endemias, Laborato´rio de Entomologia, Sa˜o Paulo, SP, Brazil. 3Universidade Estadual de Campinas, Departamento de Biologia Animal, Sa˜o Paulo, SP, Brazil. 4Corresponding author: Roseli Tuan, e-mail: [email protected] PALASIO, R.G.S., CASOTTI, M.O., RODRIGUES, T.C., MENEZES, R.M.T., ZANOTTI- MAGALHAES, E.M., TUAN, R.
    [Show full text]
  • Gastropoda: Physidae) in Singapore
    BioInvasions Records (2015) Volume 4, Issue 3: 189–194 Open Access doi: http://dx.doi.org/10.3391/bir.2015.4.3.06 © 2015 The Author(s). Journal compilation © 2015 REABIC Research Article Clarifying the identity of the long-established, globally-invasive Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in Singapore Ting Hui Ng1,2*, Siong Kiat Tan3 and Darren C.J. Yeo1,2 1Department of Biological Sciences, National University of Singapore 14 Science Drive 4, Singapore 117543, Republic of Singapore 2NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore 117411, Republic of Singapore 3Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Republic of Singapore E-mail: [email protected] (THN), [email protected] (SKT), [email protected] (DCJY) *Corresponding author Received: 24 December 2014 / Accepted: 6 May 2015 / Published online: 2 June 2015 Handling editor: Vadim Panov Abstract The freshwater snail identified as Physastra sumatrana has been recorded in Singapore since the late 1980’s. It is distributed throughout the island and commonly associated with ornamental aquatic plants. Although the species has previously been considered by some to be native to Singapore, its origin is currently categorised as unknown. Morphological comparisons of freshly collected specimens and material in museum collections with type material, together with DNA barcoding, show that both Physastra sumatrana, and a recent gastropod record of Stenophysa spathidophallus, in Singapore are actually the same species—the globally-invasive Physa acuta. An unidentified physid snail was also collected from the Singapore aquarium trade.
    [Show full text]
  • The Freshwater Snails (Mollusca: Gastropoda) of Mexico: Updated Checklist, Endemicity Hotspots, Threats and Conservation Status
    Revista Mexicana de Biodiversidad Revista Mexicana de Biodiversidad 91 (2020): e912909 Taxonomy and systematics The freshwater snails (Mollusca: Gastropoda) of Mexico: updated checklist, endemicity hotspots, threats and conservation status Los caracoles dulceacuícolas (Mollusca: Gastropoda) de México: listado actualizado, hotspots de endemicidad, amenazas y estado de conservación Alexander Czaja a, *, Iris Gabriela Meza-Sánchez a, José Luis Estrada-Rodríguez a, Ulises Romero-Méndez a, Jorge Sáenz-Mata a, Verónica Ávila-Rodríguez a, Jorge Luis Becerra-López a, Josué Raymundo Estrada-Arellano a, Gabriel Fernando Cardoza-Martínez a, David Ramiro Aguillón-Gutiérrez a, Diana Gabriela Cordero-Torres a, Alan P. Covich b a Facultad de Ciencias Biológicas, Universidad Juárez del Estado de Durango, Av.Universidad s/n, Fraccionamiento Filadelfia, 35010 Gómez Palacio, Durango, Mexico b Institute of Ecology, Odum School of Ecology, University of Georgia, 140 East Green Street, Athens, GA 30602-2202, USA *Corresponding author: [email protected] (A. Czaja) Received: 14 April 2019; accepted: 6 November 2019 Abstract We present an updated checklist of native Mexican freshwater gastropods with data on their general distribution, hotspots of endemicity, threats, and for the first time, their estimated conservation status. The list contains 193 species, representing 13 families and 61 genera. Of these, 103 species (53.4%) and 12 genera are endemic to Mexico, and 75 species are considered local endemics because of their restricted distribution to very small areas. Using NatureServe Ranking, 9 species (4.7%) are considered possibly or presumably extinct, 40 (20.7%) are critically imperiled, 30 (15.5%) are imperiled, 15 (7.8%) are vulnerable and only 64 (33.2%) are currently stable.
    [Show full text]
  • Aquatic Snails of the Snake and Green River Basins of Wyoming
    Aquatic snails of the Snake and Green River Basins of Wyoming Lusha Tronstad Invertebrate Zoologist Wyoming Natural Diversity Database University of Wyoming 307-766-3115 [email protected] Mark Andersen Information Systems and Services Coordinator Wyoming Natural Diversity Database University of Wyoming 307-766-3036 [email protected] Suggested citation: Tronstad, L.M. and M. D. Andersen. 2018. Aquatic snails of the Snake and Green River Basins of Wyoming. Report prepared by the Wyoming Natural Diversity Database for the Wyoming Fish and Wildlife Department. 1 Abstract Freshwater snails are a diverse group of mollusks that live in a variety of aquatic ecosystems. Many snail species are of conservation concern around the globe. About 37-39 species of aquatic snails likely live in Wyoming. The current study surveyed the Snake and Green River basins in Wyoming and identified 22 species and possibly discovered a new operculate snail. We surveyed streams, wetlands, lakes and springs throughout the basins at randomly selected locations. We measured habitat characteristics and basic water quality at each site. Snails were usually most abundant in ecosystems with higher standing stocks of algae, on solid substrate (e.g., wood or aquatic vegetation) and in habitats with slower water velocity (e.g., backwater and margins of streams). We created an aquatic snail key for identifying species in Wyoming. The key is a work in progress that will be continually updated to reflect changes in taxonomy and new knowledge. We hope the snail key will be used throughout the state to unify snail identification and create better data on Wyoming snails.
    [Show full text]
  • 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]
  • Spineless Spineless Rachael Kemp and Jonathan E
    Spineless Status and trends of the world’s invertebrates Edited by Ben Collen, Monika Böhm, Rachael Kemp and Jonathan E. M. Baillie Spineless Spineless Status and trends of the world’s invertebrates of the world’s Status and trends Spineless Status and trends of the world’s invertebrates Edited by Ben Collen, Monika Böhm, Rachael Kemp and Jonathan E. M. Baillie Disclaimer The designation of the geographic entities in this report, and the presentation of the material, do not imply the expressions of any opinion on the part of ZSL, IUCN or Wildscreen concerning the legal status of any country, territory, area, or its authorities, or concerning the delimitation of its frontiers or boundaries. Citation Collen B, Böhm M, Kemp R & Baillie JEM (2012) Spineless: status and trends of the world’s invertebrates. Zoological Society of London, United Kingdom ISBN 978-0-900881-68-8 Spineless: status and trends of the world’s invertebrates (paperback) 978-0-900881-70-1 Spineless: status and trends of the world’s invertebrates (online version) Editors Ben Collen, Monika Böhm, Rachael Kemp and Jonathan E. M. Baillie Zoological Society of London Founded in 1826, the Zoological Society of London (ZSL) is an international scientifi c, conservation and educational charity: our key role is the conservation of animals and their habitats. www.zsl.org International Union for Conservation of Nature International Union for Conservation of Nature (IUCN) helps the world fi nd pragmatic solutions to our most pressing environment and development challenges. www.iucn.org Wildscreen Wildscreen is a UK-based charity, whose mission is to use the power of wildlife imagery to inspire the global community to discover, value and protect the natural world.
    [Show full text]
  • Distribution of the Alien Freshwater Snail Ferrissia Fragilis (Tryon, 1863) (Gastropoda: Planorbidae) in the Czech Republic
    Aquatic Invasions (2007) Volume 2, Issue 1: 45-54 Open Access doi: http://dx.doi.org/10.3391/ai.2007.2.1.5 © 2007 The Author(s). Journal compilation © 2007 REABIC Research Article Distribution of the alien freshwater snail Ferrissia fragilis (Tryon, 1863) (Gastropoda: Planorbidae) in the Czech Republic Luboš Beran1* and Michal Horsák2 1Kokořínsko Protected Landscape Area Administration, Česká 149, CZ–276 01 Mělník, Czech Republic 2Institute of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, CZ–611 37 Brno, Czech Republic E-mail: [email protected] (LB), [email protected] (MH) *Corresponding author Received: 22 November 2006 / Accepted: 17 January 2007 Abstract We summarize and analyze all known records of the freshwater snail, Ferrissia fragilis (Tryon, 1863) in the Czech Republic. In 1942 this species was found in the Czech Republic for the first time and a total of 155 species records were obtained by the end of 2005. Based on distribution data, we observed the gradual expansion of this gastropod not only in the Elbe Lowland, where its occurrence is concentrated, but also in other regions of the Czech Republic particularly between 2001 and 2005. Information on habitat, altitude and co-occurrence with other molluscs are presented. Key words: alien species, Czech Republic, distribution, Ferrissia fragilis, habitats Introduction used for all specimens of the genus Ferrissia found in the Czech Republic. Probably only one species of the genus Ferrissia Records of the genus Ferrissia exist from all (Walker, 1903) occurs in Europe. Different Czech neighbouring countries (Frank et al. 1990, theories exist, about whether it is an indigenous Lisický 1991, Frank 1995, Strzelec and Lewin and overlooked taxon or rather a recently 1996, Glöer and Meier-Brook 2003) and also introduced species in Europe (Falkner and from other European countries, e.g.
    [Show full text]