The Amnicolidae of Michigan: Distribution, Ecology, and Taxonomy
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(Pyrgulopsis Spp.) in and Adjacent to the Spring Mountains, Nevada
Western North American Naturalist 80(2), © 2020, pp. 183–193 An inventory of springsnails (Pyrgulopsis spp.) in and adjacent to the Spring Mountains, Nevada KEVIN S. MCKELVEY1,*, COREY KALLSTROM2, JERI LEDBETTER3, DONALD W. SADA4, KRISTINE L. PILGRIM1, AND MICHAEL K. SCHWARTZ1 1USDA Forest Service, National Genomics Center, Rocky Mountain Research Station, Missoula, MT 59801 2U.S. Fish and Wildlife Service, Southern Nevada Fish and Wildlife Office, Las Vegas, NV 89130 3Spring Stewardship Institute, Flagstaff, AZ 86001 4Desert Research Institute, Reno, NV 89512 ABSTRACT.—Springsnails (genus Pyrgulopsis, hereafter pyrgs) are small freshwater aquatic gastropods that occur in isolated springs in western North America. Pyrgs are species of conservation concern, but patterns of occupancy and speciation are complex. We investigated patterns of occurrence for pyrgs in the Spring Mountains, Clark County, Nevada. We were primarily concerned with identifying springs containing the species P. deaconi, the Spring Mountains pyrg, and P. turbatrix, the southeast Nevada pyrg. We identified species through genetic analysis of the COI-1 mito- chondrial region and examined patterns of genetic structure. We located aquatic gastropods in 26 springs and analyzed 420 aquatic gastropods, of which 392 were pyrgs, the remainder representing an unknown species of Physa. Of the 26 springs, 25 contained pyrgs and 5 contained Physa sp. For pyrgs, at COI-1 we identified a total of 29 haplotypes that formed 6 distinct monophyletic groups. Five of the 6 groups were consistent with pyrgs previously identified: P. bac- chus, P. deaconi, P. fausta, P. turbatrix, and an unknown species which had been identified previously in the Grapevine Springs. -
Shell Morphology, Radula and Genital Structures of New Invasive Giant African Land
bioRxiv preprint doi: https://doi.org/10.1101/2019.12.16.877977; this version posted December 16, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity.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 4.0 International license. 1 Shell Morphology, Radula and Genital Structures of New Invasive Giant African Land 2 Snail Species, Achatina fulica Bowdich, 1822,Achatina albopicta E.A. Smith (1878) and 3 Achatina reticulata Pfeiffer 1845 (Gastropoda:Achatinidae) in Southwest Nigeria 4 5 6 7 8 9 Alexander B. Odaibo1 and Suraj O. Olayinka2 10 11 1,2Department of Zoology, University of Ibadan, Ibadan, Nigeria 12 13 Corresponding author: Alexander B. Odaibo 14 E.mail :[email protected] (AB) 15 16 17 18 1 bioRxiv preprint doi: https://doi.org/10.1101/2019.12.16.877977; this version posted December 16, 2019. 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 4.0 International license. 19 Abstract 20 The aim of this study was to determine the differences in the shell, radula and genital 21 structures of 3 new invasive species, Achatina fulica Bowdich, 1822,Achatina albopicta E.A. 22 Smith (1878) and Achatina reticulata Pfeiffer, 1845 collected from southwestern Nigeria and to 23 determine features that would be of importance in the identification of these invasive species in 24 Nigeria. -
North American Hydrobiidae (Gastropoda: Rissoacea): Redescription and Systematic Relationships of Tryonia Stimpson, 1865 and Pyrgulopsis Call and Pilsbry, 1886
THE NAUTILUS 101(1):25-32, 1987 Page 25 . North American Hydrobiidae (Gastropoda: Rissoacea): Redescription and Systematic Relationships of Tryonia Stimpson, 1865 and Pyrgulopsis Call and Pilsbry, 1886 Robert Hershler Fred G. Thompson Department of Invertebrate Zoology Florida State Museum National Museum of Natural History University of Florida Smithsonian Institution Gainesville, FL 32611, USA Washington, DC 20560, USA ABSTRACT scribed) in the Southwest. Taylor (1966) placed Tryonia in the Littoridininae Taylor, 1966 on the basis of its Anatomical details are provided for the type species of Tryonia turreted shell and glandular penial lobes. It is clear from Stimpson, 1865, Pyrgulopsis Call and Pilsbry, 1886, Fonteli- cella Gregg and Taylor, 1965, and Microamnicola Gregg and the initial descriptions and subsequent studies illustrat- Taylor, 1965, in an effort to resolve the systematic relationships ing the penis (Russell, 1971: fig. 4; Taylor, 1983:16-25) of these taxa, which represent most of the generic-level groups that Fontelicella and its subgenera, Natricola Gregg and of Hydrobiidae in southwestern North America. Based on these Taylor, 1965 and Microamnicola Gregg and Taylor, 1965 and other data presented either herein or in the literature, belong to the Nymphophilinae Taylor, 1966 (see Hyalopyrgus Thompson, 1968 is assigned to Tryonia; and Thompson, 1979). While the type species of Pyrgulop- Fontelicella, Microamnicola, Nat ricola Gregg and Taylor, 1965, sis, P. nevadensis (Stearns, 1883), has not received an- Marstonia F. C. Baker, 1926, and Mexistiobia Hershler, 1985 atomical study, the penes of several eastern species have are allocated to Pyrgulopsis. been examined by Thompson (1977), who suggested that The ranges of both Tryonia and Pyrgulopsis include parts the genus may be a nymphophiline. -
Study of Earthworm
4.1 SYSTEMATICS POSITION,HABIT AND HABITAT 4.2 EXTERNAL CHARACTERS 4.3 DIGESTIVE SYSTEM 4.4 CIRCULATORY SYSTEM 4.5 EXCRETORY SYSTEM 4.6 REPRODUCTIVE SYSTEM 4.7 NERVOUS SYSTEM AND SENSORY ORGANS 4.8 ECONOMIC IMPORTANCE Systematic Position Phylum: Annelida Class: Oligochaeta Genus: Pheretima Species: posthuma Common Name: Earthworm Habit and habitat • These are nocturnal in habit and live in damp, moist, humus-rich soil of lawns, gardens etc. In dry weather they burrow deeper into the soil to avoid dryness. Their niche is a herbivore and macro-decomposer and is important as a source of food for birds. It also helps in soil aeration and increasing soil fertility. EXTERNAL CHARACTERS • Body is long, narrow and cylindrical. • Length may reach upto 150 mm. • Body colour is brown. • Anterior end is pointed while the posterior end is blunt. • Body is divided into 100-140 segments called metameres. • The anteriormost segment is called Prostomium. • Mouth is a crescentic aperture, present at anterior end. The segment containing mouth is called peristomium. • Setae are present at all the segments except-1st and last. Each seta is embedded in a setal sac. • A glandular band called Clitellum is situated in 14th to 16th segments. It forms coccon during the reproduction. • female genital pore is situated in 14th segment (ventral surface)while male genital pore is present in 18th segment. • The earthworm feeds on organic matter in the soil. • The food is sucked by the pharynx and the oesophageal glands add calcite to neutralise acidity of the soil. • The food is then grinded by the horny lining of the gizzard and is absorbed in the intestine. -
Interior Columbia Basin Mollusk Species of Special Concern
Deixis l-4 consultants INTERIOR COLUMl3lA BASIN MOLLUSK SPECIES OF SPECIAL CONCERN cryptomasfix magnidenfata (Pilsbly, 1940), x7.5 FINAL REPORT Contract #43-OEOO-4-9112 Prepared for: INTERIOR COLUMBIA BASIN ECOSYSTEM MANAGEMENT PROJECT 112 East Poplar Street Walla Walla, WA 99362 TERRENCE J. FREST EDWARD J. JOHANNES January 15, 1995 2517 NE 65th Street Seattle, WA 98115-7125 ‘(206) 527-6764 INTERIOR COLUMBIA BASIN MOLLUSK SPECIES OF SPECIAL CONCERN Terrence J. Frest & Edward J. Johannes Deixis Consultants 2517 NE 65th Street Seattle, WA 98115-7125 (206) 527-6764 January 15,1995 i Each shell, each crawling insect holds a rank important in the plan of Him who framed This scale of beings; holds a rank, which lost Would break the chain and leave behind a gap Which Nature’s self wcuid rue. -Stiiiingfieet, quoted in Tryon (1882) The fast word in ignorance is the man who says of an animal or plant: “what good is it?” If the land mechanism as a whole is good, then every part is good, whether we understand it or not. if the biota in the course of eons has built something we like but do not understand, then who but a fool would discard seemingly useless parts? To keep every cog and wheel is the first rule of intelligent tinkering. -Aido Leopold Put the information you have uncovered to beneficial use. -Anonymous: fortune cookie from China Garden restaurant, Seattle, WA in this “business first” society that we have developed (and that we maintain), the promulgators and pragmatic apologists who favor a “single crop” approach, to enable a continuous “harvest” from the natural system that we have decimated in the name of profits, jobs, etc., are fairfy easy to find. -
The Slit Bearing Nacreous Archaeogastropoda of the Triassic Tropical Reefs in the St
Berliner paläobiologische Abhandlungen 10 5-47 Berlin 2009-11-11 The slit bearing nacreous Archaeogastropoda of the Triassic tropical reefs in the St. Cassian Formation with evaluation of the taxonomic value of the selenizone Klaus Bandel Abstract: Many Archaeogastropoda with nacreous shell from St. Cassian Formation have a slit in the outer lip that gives rise to a selenizone. The primary objective of this study is to analyze family level characters, provide a revision of some generic classifications and compare with species living today. Members of twelve families are recognized with the Lancedellidae n. fam., Rhaphistomellidae n. fam., Pseudowortheniellidae n. fam., Pseudoschizogoniidae n. fam., Wortheniellidae n. fam. newly defined. While the organization of the aperture and the shell structure is similar to that of the living Pleurotomariidae, morphology of the early ontogenetic shell and size and shape of the adult shell distinguish the Late Triassic slit bearing Archae- gastropoda from these. In the reef environment of the tropical Tethys Ocean such Archaeogastropoda were much more diverse than modern representatives of that group from the tropical Indo-Pacific Ocean. Here Haliotis, Seguenzia and Fossarina represent living nacreous gastropods with slit and are compared to the fossil species. All three have distinct shape and arrangement of the teeth in their radula that is not related to that of the Pleurotomariidae and also differs among each other. The family Fossarinidae n. fam. and the new genera Pseudowortheniella and Rinaldoella are defined, and a new species Campbellospira missouriensis is described. Zusammenfassung: In der St. Cassian-Formation kommen zahlreiche Arten der Archaeogastropoda vor, die eine perlmutterige Schale mit Schlitz in der Außenlippe haben, welcher zu einem Schlitzband führt. -
A New Species and New Genus of Clausiliidae (Gastropoda: Stylommatophora) from South-Eastern Hubei, China
Folia Malacol. 29(1): 38–42 https://doi.org/10.12657/folmal.029.004 A NEW SPECIES AND NEW GENUS OF CLAUSILIIDAE (GASTROPODA: STYLOMMATOPHORA) FROM SOUTH-EASTERN HUBEI, CHINA ZHE-YU CHEN1*, KAI-CHEN OUYANG2 1School of Life Sciences, Nanjing University, China (e-mail: [email protected]); https://orcid.org/0000-0002-4150-8906 2College of Horticulture & Forestry Science, Huazhong Agricultural University, China *corresponding author ABSTRACT: A new clausiliid species, in a newly proposed genus, Probosciphaedusa mulini gen. et sp. nov. is described from south-eastern Hubei, China. The new taxon is characterised by having thick and cylindrical apical whorls, a strongly expanded lamella inferior and a lamella subcolumellaris that together form a tubular structure at the base of the peristome, and a dorsal lunella connected to both the upper and the lower palatal plicae. Illustrations of the new species are provided. KEY WORDS: new species, new genus, systematics, Phaedusinae, central China INTRODUCTION In the past decades, quite a few authors have con- south-eastern Hubei, which is rarely visited by mala- ducted research on the systematics of the Chinese cologists or collectors, and collected some terrestrial Clausiliidae. Their research hotspots were mostly molluscs. Among them, a clausiliid was identified located in southern China, namely the provinces as a new genus and new species, and its respective Sichuan, Chongqing, Guizhou, Yunnan, Guangxi descriptions and illustrations are presented herein. and parts of Guangdong and Hubei, which have a Although some molecular phylogenetic studies have rich malacofauna (GREGO & SZEKERES 2011, 2017, focused on the Phaedusinae in East Asia (MOTOCHIN 2019, 2020, HUNYADI & SZEKERES 2016, NORDSIECK et al. -
Radula of Trajct1ut Ctcap11lcana ( Pilsbry and Lowe) N Eoteron Ariel
THE GENUS TRAJANA (MOLLUSCA: GASTROPODA) IN THE NEW WORLD E:t\IILY II. VOKES TULANE UNIVERSITY CONTENTS I. ABSTRACT __ - 75 II. INTRODUCTION 75 III. ACKNOWLEDGMENTS 77 IV. SYSTEMATIC DESCRIPTIONS 77 V. LOCALITY DATA _ 83 VI. LITERATURE CITED (8" ) ILLUSTRATIONS TEXT FIGURE 1. Radula of Trajct1Ut ctcap11lcana ( Pilsbry and Lowe) 76 TEXT FIGUEE 2. N eoteron ariel Pilsbry and Lowe 76 PLATE 1 _ 81 I. ABSTRACT off the coast of western Mexico. All species The nassarioid gastropod genus T1'ajanct are treated systematically. s.s. includes those species with a closed siphonal canal and a circular aperture, sur II. INTRODUCTION rounded by a raised p eristome. There are Those gastropods possessing a short, but four species in the fossil record of the slightly recurved, closed siphonal canal, a New World, occurring in the upper Mio circular aperture surrounded by a raised cene of North Carolina, Florida, Mexico, peristome, and a single terminal varix have and Peru, and the Pliocene of Ecuador. One presented a problem to writers for many of these four is a new species: T. ve1'ctcru years. Dall ( 1910, p. 32-33) suggested that zana E. H . Vokes, from the upper Miocene they be referred to the genus Hindsict A. Agueguexquite Formation of Mexico, and Adams, 1851, which was a troubled group represents the first record of the genus in from the start. Dell ( 1967, p. 309-310) the "Tertiary Caribbean Province," linking has summarized the problem nicely, stating: the eastern United States and the western "The name Hindsia had an uncertain intro South American occurrences. -
Empirically Derived Indices of Biotic Integrity for Forested Wetlands, Coastal Salt Marshes and Wadable Freshwater Streams in Massachusetts
Empirically Derived Indices of Biotic Integrity for Forested Wetlands, Coastal Salt Marshes and Wadable Freshwater Streams in Massachusetts September 15, 2013 This report is the result of several years of field data collection, analyses and IBI development, and consideration of the opportunities for wetland program and policy development in relation to IBIs and CAPS Index of Ecological Integrity (IEI). Contributors include: University of Massachusetts Amherst Kevin McGarigal, Ethan Plunkett, Joanna Grand, Brad Compton, Theresa Portante, Kasey Rolih, and Scott Jackson Massachusetts Office of Coastal Zone Management Jan Smith, Marc Carullo, and Adrienne Pappal Massachusetts Department of Environmental Protection Lisa Rhodes, Lealdon Langley, and Michael Stroman Empirically Derived Indices of Biotic Integrity for Forested Wetlands, Coastal Salt Marshes and Wadable Freshwater Streams in Massachusetts Abstract The purpose of this study was to develop a fully empirically-based method for developing Indices of Biotic Integrity (IBIs) that does not rely on expert opinion or the arbitrary designation of reference sites and pilot its application in forested wetlands, coastal salt marshes and wadable freshwater streams in Massachusetts. The method we developed involves: 1) using a suite of regression models to estimate the abundance of each taxon across a gradient of stressor levels, 2) using statistical calibration based on the fitted regression models and maximum likelihood methods to predict the value of the stressor metric based on the abundance of the taxon at each site, 3) selecting taxa in a forward stepwise procedure that conditionally improves the concordance between the observed stressor value and the predicted value the most and a stopping rule for selecting taxa based on a conditional alpha derived from comparison to pseudotaxa data, and 4) comparing the coefficient of concordance for the final IBI to the expected distribution derived from randomly permuted data. -
Species Status Assessment Report for Beaverpond Marstonia
Species Status Assessment Report For Beaverpond Marstonia (Marstonia castor) Marstonia castor. Photo by Fred Thompson Version 1.0 September 2017 U.S. Fish and Wildlife Service Region 4 Atlanta, Georgia 1 2 This document was prepared by Tamara Johnson (U.S. Fish and Wildlife Service – Georgia Ecological Services Field Office) with assistance from Andreas Moshogianis, Marshall Williams and Erin Rivenbark with the U.S. Fish and Wildlife Service – Southeast Regional Office, and Don Imm (U.S. Fish and Wildlife Service – Georgia Ecological Services Field Office). Maps and GIS expertise were provided by Jose Barrios with U.S. Fish and Wildlife Service – Southeast Regional Office. We appreciate Gerald Dinkins (Dinkins Biological Consulting), Paul Johnson (Alabama Department of Conservation and Natural Resources), and Jason Wisniewski (Georgia Department of Natural Resources) for providing peer review of a prior draft of this report. 3 Suggested reference: U.S. Fish and Wildlife Service. 2017. Species status assessment report for beaverpond marstonia. Version 1.0. September, 2017. Atlanta, GA. 24 pp. 4 Species Status Assessment Report for Beaverpond Marstonia (Marstonia castor) Prepared by the Georgia Ecological Services Field Office U.S. Fish and Wildlife Service EXECUTIVE SUMMARY This species status assessment is a comprehensive biological status review by the U.S. Fish and Wildlife Service (Service) for beaverpond marstonia (Marstonia castor), and provides a thorough account of the species’ overall viability and extinction risk. Beaverpond marstonia is a small spring snail found in tributaries located east of Lake Blackshear in Crisp, Worth, and Dougherty Counties, Georgia. It was last documented in 2000. Based on the results of repeated surveys by qualified species experts, there appears to be no extant populations of beaverpond marstonia. -
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. -
Abstract Volume
ABSTRACT VOLUME August 11-16, 2019 1 2 Table of Contents Pages Acknowledgements……………………………………………………………………………………………...1 Abstracts Symposia and Contributed talks……………………….……………………………………………3-225 Poster Presentations…………………………………………………………………………………226-291 3 Venom Evolution of West African Cone Snails (Gastropoda: Conidae) Samuel Abalde*1, Manuel J. Tenorio2, Carlos M. L. Afonso3, and Rafael Zardoya1 1Museo Nacional de Ciencias Naturales (MNCN-CSIC), Departamento de Biodiversidad y Biologia Evolutiva 2Universidad de Cadiz, Departamento CMIM y Química Inorgánica – Instituto de Biomoléculas (INBIO) 3Universidade do Algarve, Centre of Marine Sciences (CCMAR) Cone snails form one of the most diverse families of marine animals, including more than 900 species classified into almost ninety different (sub)genera. Conids are well known for being active predators on worms, fishes, and even other snails. Cones are venomous gastropods, meaning that they use a sophisticated cocktail of hundreds of toxins, named conotoxins, to subdue their prey. Although this venom has been studied for decades, most of the effort has been focused on Indo-Pacific species. Thus far, Atlantic species have received little attention despite recent radiations have led to a hotspot of diversity in West Africa, with high levels of endemic species. In fact, the Atlantic Chelyconus ermineus is thought to represent an adaptation to piscivory independent from the Indo-Pacific species and is, therefore, key to understanding the basis of this diet specialization. We studied the transcriptomes of the venom gland of three individuals of C. ermineus. The venom repertoire of this species included more than 300 conotoxin precursors, which could be ascribed to 33 known and 22 new (unassigned) protein superfamilies, respectively. Most abundant superfamilies were T, W, O1, M, O2, and Z, accounting for 57% of all detected diversity.