Molecular Characterization of Liver Fluke Intermediate Host Lymnaeids
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Revisiting Big-Ear Radix Snails on the Kenai Peninsula by Matt Bowser
Refuge Notebook • Vol. 19, No. 37 • September 15, 2017 Revisiting big-ear radix snails on the Kenai Peninsula by Matt Bowser Genetic relationships among selected big-ear radix snails collected in several geographic regions. Longer branch lengths correspond to more differences among barcode sequences, measured in expected changes per amino acidsite. “Sometimes one thing leads to another.” This is Alaska, he doubted that it had been introduced. a quote from a Refuge Notebook article I had writ- We dug into this question of whether or not the ten about the Kenai Peninsula’s first exotic freshwa- big-ear radix is exotic to our area. A literature search ter snail, the big-ear radix (Radix auricularia), last Jan- and expert opinion supported my first conclusion: the uary. I had been referring to the past, but more was to current understanding was that all populations of this come. Soon after the article appeared in the Clarion I snail currently in North America were the result of in- was contacted by retired geologist Dr. Dick Reger, who troduction from Europe. disagreed with statements in my article. He thought The history of Radix auricularia in North Amer- that this snail might be native. ica goes back to before 1869 when it was found near As a geologist, Dick had studied freshwater snails Troy, New York, apparently introduced with plants and clams in old sediments in our area to determine from Europe. By the early 1900s it had spread to multi- past conditions. He had also collected and identified ple locations in the Great Lakes. -
A Global Assessment of Parasite Diversity in Galaxiid Fishes
diversity Article A Global Assessment of Parasite Diversity in Galaxiid Fishes Rachel A. Paterson 1,*, Gustavo P. Viozzi 2, Carlos A. Rauque 2, Verónica R. Flores 2 and Robert Poulin 3 1 The Norwegian Institute for Nature Research, P.O. Box 5685, Torgarden, 7485 Trondheim, Norway 2 Laboratorio de Parasitología, INIBIOMA, CONICET—Universidad Nacional del Comahue, Quintral 1250, San Carlos de Bariloche 8400, Argentina; [email protected] (G.P.V.); [email protected] (C.A.R.); veronicaroxanafl[email protected] (V.R.F.) 3 Department of Zoology, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand; [email protected] * Correspondence: [email protected]; Tel.: +47-481-37-867 Abstract: Free-living species often receive greater conservation attention than the parasites they support, with parasite conservation often being hindered by a lack of parasite biodiversity knowl- edge. This study aimed to determine the current state of knowledge regarding parasites of the Southern Hemisphere freshwater fish family Galaxiidae, in order to identify knowledge gaps to focus future research attention. Specifically, we assessed how galaxiid–parasite knowledge differs among geographic regions in relation to research effort (i.e., number of studies or fish individuals examined, extent of tissue examination, taxonomic resolution), in addition to ecological traits known to influ- ence parasite richness. To date, ~50% of galaxiid species have been examined for parasites, though the majority of studies have focused on single parasite taxa rather than assessing the full diversity of macro- and microparasites. The highest number of parasites were observed from Argentinean galaxiids, and studies in all geographic regions were biased towards the highly abundant and most widely distributed galaxiid species, Galaxias maculatus. -
An Annotated Draft Genome for Radix Auricularia (Gastropoda, Mollusca)
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Plymouth ElectronicGBE Archive and Research Library An Annotated Draft Genome for Radix auricularia (Gastropoda, Mollusca) Tilman Schell1,2,*, Barbara Feldmeyer2, Hanno Schmidt2, Bastian Greshake3, Oliver Tills4, Manuela Truebano4, Simon D. Rundle4, Juraj Paule5, Ingo Ebersberger2,3, and Markus Pfenninger1,2 1Molecular Ecology Group, Institute for Ecology, Evolution and Diversity, Goethe-University, Frankfurt am Main, Germany 2Adaptation and Climate, Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany 3Department for Applied Bioinformatics, Institute for Cell Biology and Neuroscience Goethe-University, Frankfurt am Main, Germany 4Marine Biology and Ecology Research Centre, Marine Institute, School of Marine Science and Engineering, Plymouth University, United Kingdom 5Department of Botany and Molecular Evolution, Senckenberg Research Institute, Frankfurt am Main, Germany *Corresponding author: E-mail: [email protected]. Accepted: February 14, 2017 Data deposition: This project has been deposited at NCBI under the accession PRJNA350764. Abstract Molluscs are the second most species-rich phylum in the animal kingdom, yet only 11 genomes of this group have been published so far. Here, we present the draft genome sequence of the pulmonate freshwater snail Radix auricularia. Six whole genome shotgun libraries with different layouts were sequenced. The resulting assembly comprises 4,823 scaffolds with a cumulative length of 910 Mb and an overall read coverage of 72Â. The assembly contains 94.6% of a metazoan core gene collection, indicating an almost complete coverage of the coding fraction. The discrepancy of ~ 690 Mb compared with the estimated genome size of R. -
Diversity of Echinostomes (Digenea: Echinostomatidae) in Their Snail Hosts at High Latitudes
Parasite 28, 59 (2021) Ó C. Pantoja et al., published by EDP Sciences, 2021 https://doi.org/10.1051/parasite/2021054 urn:lsid:zoobank.org:pub:9816A6C3-D479-4E1D-9880-2A7E1DBD2097 Available online at: www.parasite-journal.org RESEARCH ARTICLE OPEN ACCESS Diversity of echinostomes (Digenea: Echinostomatidae) in their snail hosts at high latitudes Camila Pantoja1,2, Anna Faltýnková1,* , Katie O’Dwyer3, Damien Jouet4, Karl Skírnisson5, and Olena Kudlai1,2 1 Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05 České Budějovice, Czech Republic 2 Institute of Ecology, Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania 3 Marine and Freshwater Research Centre, Galway-Mayo Institute of Technology, H91 T8NW, Galway, Ireland 4 BioSpecT EA7506, Faculty of Pharmacy, University of Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096 Reims Cedex, France 5 Laboratory of Parasitology, Institute for Experimental Pathology, Keldur, University of Iceland, IS-112 Reykjavík, Iceland Received 26 April 2021, Accepted 24 June 2021, Published online 28 July 2021 Abstract – The biodiversity of freshwater ecosystems globally still leaves much to be discovered, not least in the trematode parasite fauna they support. Echinostome trematode parasites have complex, multiple-host life-cycles, often involving migratory bird definitive hosts, thus leading to widespread distributions. Here, we examined the echinostome diversity in freshwater ecosystems at high latitude locations in Iceland, Finland, Ireland and Alaska (USA). We report 14 echinostome species identified morphologically and molecularly from analyses of nad1 and 28S rDNA sequence data. We found echinostomes parasitising snails of 11 species from the families Lymnaeidae, Planorbidae, Physidae and Valvatidae. -
Revealing the Secret Lives of Cryptic Species: Examining the Phylogenetic Relationships of Echinostome Parasites in North America
ARTICLE IN PRESS Molecular Phylogenetics and Evolution xxx (2010) xxx–xxx Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Revealing the secret lives of cryptic species: Examining the phylogenetic relationships of echinostome parasites in North America Jillian T. Detwiler *, David H. Bos, Dennis J. Minchella Purdue University, Biological Sciences, Lilly Hall, 915 W State St, West Lafayette, IN 47907, USA article info abstract Article history: The recognition of cryptic parasite species has implications for evolutionary and population-based stud- Received 10 August 2009 ies of wildlife and human disease. Echinostome trematodes are a widely distributed, species-rich group of Revised 3 January 2010 internal parasites that infect a wide array of hosts and are agents of disease in amphibians, mammals, and Accepted 5 January 2010 birds. We utilize genetic markers to understand patterns of morphology, host use, and geographic distri- Available online xxxx bution among several species groups. Parasites from >150 infected host snails (Lymnaea elodes, Helisoma trivolvis and Biomphalaria glabrata) were sequenced at two mitochondrial genes (ND1 and CO1) and one Keywords: nuclear gene (ITS) to determine whether cryptic species were present at five sites in North and South Cryptic species America. Phylogenetic and network analysis demonstrated the presence of five cryptic Echinostoma lin- Echinostomes Host specificity eages, one Hypoderaeum lineage, and three Echinoparyphium lineages. Cryptic life history patterns were Molecular phylogeny observed in two species groups, Echinostoma revolutum and Echinostoma robustum, which utilized both Parasites lymnaied and planorbid snail species as first intermediate hosts. Molecular evidence confirms that two Trematodes species, E. -
A Contribution to Distribution of Genus Stagnicola and Catascopia (Gastropoda: Lymnaeidae) in the Czech Republic
Malacologica Bohemoslovaca (2008), 7: 70–73 ISSN 1336-6939 A contribution to distribution of genus Stagnicola and Catascopia (Gastropoda: Lymnaeidae) in the Czech Republic LUBOŠ BERAN Kokořínsko Protected Landscape Area Administration, Česká 149, CZ-27601 Mělník, Czech Republic; e-mail: [email protected] BERAN L., 2008: A contribution to distribution of genus Stagnicola and Catascopia (Gastropoda: Lymnaeidae) in the Czech Republic. – Malacologica Bohemoslovaca, 7: 70–73. Online serial at <http://mollusca.sav.sk> 16-Sep-2008. This paper brings a contribution to the distribution of genus Stagnicola Jeffreys, 1830 and Catascopia Meier- Brook & Bargues, 2002 in the Czech Republic. Occurrence of four species has been confirmed in the Czech Republic so far. Two species – Stagnicola corvus (Gmelin, 1791) and S. palustris (O.F. Müller, 1774) (including S. turricula (Held, 1836)), are widespread and common especially in lowlands along bigger rivers (Labe, Ohře, Morava, Dyje, Odra). Occurrence of S. fuscus (Pfeiffer, 1821) is restricted to the territory of the north-western part of Bohemia and Catascopia occulta (Jackiewicz, 1959) is a rare species with only two known sites. Key words: Mollusca, Gastropoda, Stagnicola, Catascopia, distribution Introduction Material and methods Genus Stagnicola Jeffreys, 1830 comprises gastropods of The data used in this study are from the author’s database medium size, with gradually increasing whorls and anthra- of over 45.000 records of aquatic molluscs, most of which cite black pigmentation of their conchs. Only one species, were obtained by field research during the previous 10 Stagnicola palustris (O.F. Müller, 1774), was accepted years. The remainder comes from Czech museum colle- 1959. -
A Note on Oviposition by Lymnaea Stagnalis (Linnaeus, 1758) (Gastropoda: Pulmonata: Lymnaeidae) on Shells of Conspecifics Under Laboratory Conditions
Folia Malacol. 25(2): 101–108 https://doi.org/10.12657/folmal.025.007 A NOTE ON OVIPOSITION BY LYMNAEA STAGNALIS (LINNAEUS, 1758) (GASTROPODA: PULMONATA: LYMNAEIDAE) ON SHELLS OF CONSPECIFICS UNDER LABORATORY CONDITIONS PAOLA LOMBARDO1*, FRANCESCO PAOLO MICCOLI2 1 Limno Consulting, via Bedollo 303, I-00124 Rome, Italy (e-mail: [email protected]) 2 University of L’Aquila, Coppito Science Center, I-67100 L’Aquila, Italy (e-mail: [email protected]) *corresponding author ABSTRACT: Oviposition by Lymnaea stagnalis (L.) on shells of conspecifics has been reported anecdotally from laboratory observations. In order to gain the first quantitative insight into this behaviour, we have quantified the proportion of individuals bearing egg clutches in a long-term monospecific outdoor laboratory culture of L. stagnalis during two consecutive late-summer months. The snails were assigned to size classes based on shell height. Differences between the size class composition of clutch-bearers and of the general population were statistically compared by means of Pearson’s distance χ²P analysis. Egg clutches were laid on snails of shell height >15 mm (i.e. reproductive-age individuals), with significant selection for the larger size classes (shell height 25–40 mm). While the mechanisms of and reasons behind such behaviour remain unknown, selection of larger adults as egg-carriers may have ecological implications at the population level. KEY WORDS: freshwater gastropods, Lymnaea stagnalis, great pond snail, reproductive behaviour INTRODUCTION Lymnaea stagnalis (Linnaeus, 1758) is a common & CARRIKER 1946, TER MAAT et al. 1989, ELGER & Holarctic freshwater gastropod, inhabiting most of LEMOINE 2005, GROSS & LOMBARDO in press). -
Taxonomic Status of Stagnicola Palustris (O
Folia Malacol. 23(1): 3–18 http://dx.doi.org/10.12657/folmal.023.003 TAXONOMIC STATUS OF STAGNICOLA PALUSTRIS (O. F. MÜLLER, 1774) AND S. TURRICULA (HELD, 1836) (GASTROPODA: PULMONATA: LYMNAEIDAE) IN VIEW OF NEW MOLECULAR AND CHOROLOGICAL DATA Joanna Romana Pieńkowska1, eliza Rybska2, Justyna banasiak1, maRia wesołowska1, andRzeJ lesicki1 1Department of Cell Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland (e-mail: [email protected], [email protected], [email protected], [email protected]) 2Nature Education and Conservation, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland ([email protected], [email protected]) abstRact: Analyses of nucleotide sequences of 5’- and 3’- ends of mitochondrial cytochrome oxidase subunit I (5’COI, 3’COI) and fragments of internal transcribed spacer 2 (ITS2) of nuclear rDNA gene confirmed the status of Stagnicola corvus (Gmelin), Lymnaea stagnalis L. and Ladislavella terebra (Westerlund) as separate species. The same results showed that Stagnicola palustris (O. F. Müll.) and S. turricula (Held) could also be treated as separate species, but compared to the aforementioned lymnaeids, the differences in the analysed sequences between them were much smaller, although clearly recognisable. In each case they were also larger than the differences between these molecular features of specimens from different localities of S. palustris or S. turricula. New data on the distribution of S. palustris and S. turricula in Poland showed – in contrast to the earlier reports – that their ranges overlapped. This sympatric distribution together with the small but clearly marked differences in molecular features as well as with differences in the male genitalia between S. -
Pseudosuccinea Columella: Age Resistance to Calicophoron Daubneyi Infection in Two Snail Populations
Parasite 2015, 22,6 Ó Y. Dar et al., published by EDP Sciences, 2015 DOI: 10.1051/parasite/2015003 Available online at: www.parasite-journal.org RESEARCH ARTICLE OPEN ACCESS Pseudosuccinea columella: age resistance to Calicophoron daubneyi infection in two snail populations Yasser Dar1,2, Daniel Rondelaud2, Philippe Vignoles2, and Gilles Dreyfuss2,* 1 Department of Zoology, Faculty of Science, University of Tanta, Tanta, Egypt 2 INSERM 1094, Faculties of Medicine and Pharmacy, 87025 Limoges, France Received 26 November 2014, Accepted 21 January 2015, Published online 10 February 2015 Abstract – Individual infections of Egyptian and French Pseudosuccinea columella with five miracidia of Calicoph- oron daubneyi were carried out to determine whether this lymnaeid was capable of sustaining larval development of this parasite. On day 42 post-exposure (at 23 °C), infected snails were only noted in groups of individuals measuring 1 or 2 mm in height at miracidial exposure. Snail survival in the 2-mm groups was significantly higher than that noted in the 1-mm snails, whatever the geographic origin of snail population. In contrast, prevalence of C. daubneyi infec- tion was significantly greater in the 1-mm groups (15–20% versus 3.4–4.0% in the 2-mm snails). Low values were noted for the mean shell growth of infected snails at their death (3.1–4.0 mm) and the mean number of cercariae (<9 in the 1-mm groups, <19 in the 2-mm snails). No significant differences between snail populations and snails groups were noted for these last two parameters. Most infected snails died after a single cercarial shedding wave. -
Conservation and Diversification of Small RNA Pathways Within Flatworms Santiago Fontenla1, Gabriel Rinaldi2, Pablo Smircich1,3 and Jose F
Fontenla et al. BMC Evolutionary Biology (2017) 17:215 DOI 10.1186/s12862-017-1061-5 RESEARCH ARTICLE Open Access Conservation and diversification of small RNA pathways within flatworms Santiago Fontenla1, Gabriel Rinaldi2, Pablo Smircich1,3 and Jose F. Tort1* Abstract Background: Small non-coding RNAs, including miRNAs, and gene silencing mediated by RNA interference have been described in free-living and parasitic lineages of flatworms, but only few key factors of the small RNA pathways have been exhaustively investigated in a limited number of species. The availability of flatworm draft genomes and predicted proteomes allowed us to perform an extended survey of the genes involved in small non-coding RNA pathways in this phylum. Results: Overall, findings show that the small non-coding RNA pathways are conserved in all the analyzed flatworm linages; however notable peculiarities were identified. While Piwi genes are amplified in free-living worms they are completely absent in all parasitic species. Remarkably all flatworms share a specific Argonaute family (FL-Ago) that has been independently amplified in different lineages. Other key factors such as Dicer are also duplicated, with Dicer-2 showing structural differences between trematodes, cestodes and free-living flatworms. Similarly, a very divergent GW182 Argonaute interacting protein was identified in all flatworm linages. Contrasting to this, genes involved in the amplification of the RNAi interfering signal were detected only in the ancestral free living species Macrostomum lignano. We here described all the putative small RNA pathways present in both free living and parasitic flatworm lineages. Conclusion: These findings highlight innovations specifically evolved in platyhelminths presumably associated with novel mechanisms of gene expression regulation mediated by small RNA pathways that differ to what has been classically described in model organisms. -
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. -
Ecological Divergence and Reproductive Isolation Between the Freshwater Snails Lymnaea Peregra (Müller 1774) and L
Research Collection Doctoral Thesis Ecological divergence and reproductive isolation between the freshwater snails Lymnaea peregra (Müller 1774) and L. ovata (Draparnaud 1805) Author(s): Wullschleger, Esther Publication Date: 2000 Permanent Link: https://doi.org/10.3929/ethz-a-004099299 Rights / License: In Copyright - Non-Commercial Use Permitted This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library DissETHNo. 13898 Ecological divergence and reproductive isolation between the freshwa¬ ter snails Lymnaea peregra (Müller 1774) and L. ovata (Draparnaud 1805) A dissertation submitted to the Swiss Federal Institute of Technology Zürich for the degree of Doctor of Natural Sciences Presented by Esther Wullschleger ,^r;-' Dipl. Biol. Univ. Zürich born October 22nd, 1966 ?<°" in Zürich, Switzerland **fc-LA Submitted for the approval of Prof. Dr. Paul Schmid-Hempel, examiner Dr. Jukka Jokela, co-examiner Prof. Dr. Paul Ward, co-examiner 2000 2 "J'ai également recueilli toute une série de formes de L ovata dont les extrêmes, très rares cependant, sont bien voisins de l'espèce de Müller Mais je dois dire que, si dans une colonie de L ovata, on constate parfois de ces individus extrêmes qui ne sont guère discernables de L peregra, je n'ai jamais observé une seule colonie de cette dernière espèce qui présente le fait inverse, c'est-à-dire des individus qui pourraient être confondus avec l'espèce de Draparnaud II semble donc bien qu'il y ait deux types spécifiques, l'un polymorphe, L ovata, don't certains exemplaires simulent par convergence le second, L peregra, celui-ci ne montrant pas ou bien " peu de variabilité dans la direction du premier J Favre (1927) 3 Contents Contents 3 Summary 4 Zusammenfassung 5 General introduction and thesis outline 7 Lymnaea (Radix) peregra/ovata as a study system 10 Thesis outline 12 1.