Crayfish Plague Epizootics in Germany-Classification of Two
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DNA-Based Methods for Freshwater Biodiversity Conservation
DNA-based methods for freshwater biodiversity conservation - Phylogeographic analysis of noble crayfish (Astacus astacus) and new insights into the distribution of crayfish plague DISSERTATION zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften Fachbereich 7: Natur- und Umweltwissenschaften der Universität Koblenz-Landau Campus Landau vorgelegt am 16. Januar 2013 von Anne Schrimpf geboren am 21. September 1984 in Frankfurt am Main Referent: Prof. Dr. Ralf Schulz Koreferent: Prof. Dr. Klaus Schwenk - This thesis is dedicated to my grandparents - Content CONTENT CONTENT ............................................................................................................... 5 ABSTRACT ............................................................................................................ 8 ZUSAMMENFASSUNG ........................................................................................ 10 ABBEREVIATIONS .............................................................................................. 13 GENERAL INTRODUCTION ................................................................................ 15 Conservation of biological diversity ........................................................................ 15 The freshwater crayfish ............................................................................................ 17 General ............................................................................................................... 17 The noble crayfish (Astacus astacus) ................................................................ -
A Toolkit for Developing a Catchment-Scale Conservation
A toolkit for developing catchment-scale conservation strategy for White-clawed crayfish A toolkit for developing catchment-scale conservation strategy for White- clawed crayfish Version 2 October 2011 Reference this document as: Peay S., Kindemba V., Attwood F. and Christmas M. (2011). A toolkit for developing catchment-scale conservation strategy for White-clawed crayfish. Version 1 October 2011 Buglife – The Invertebrate Conservation Trust, Peterborough. ISBN 978-1-908657-00-8 Available to download from the crayfish website www.crayfish.org.uk Document history Consultation draft issued January 2011 Final Version 1 issued October 2011 White-clawed crayfish Signal crayfish Acknowledgements: This guidance has been produced with funding from the Environment Agency. The project has been developed following a crayfish conservation workshop held by the Environment Agency in July 2009 at Malham Tarn Field Centre, North Yorkshire. Assistance with graphics in the guidance was provided by Paul Bryden. Photographs are by Stephanie Peay. Thanks go to all those who have kindly provided comments on earlier drafts, including Margaret Palmer and Suzannah Dangerfield, Buglife; Pete Sibley, Environment Agency; Julia Stansfield, Environment Agency; Mike Howe, Countryside Council for Wales, David Heaver, Natural England, Joanne Backshall, Eden Rivers Trust; Abigail Stancliffe-Vaughn, University of East Anglia, Paul Bradley, PBA Applied Ecology. Contents 1. Introduction 1 1.1 How to use this guidance on conservation strategy for White-clawed crayfish ......................... 1 2. Considerations before starting a catchment strategy 3 2.1 Policy and regulations in the countries of the UK ...................................................................... 3 2.2 Status of crayfish in the River Basin Districts ............................................................................. 4 2.3 Policy and planning at country to catchment scale ................................................................... -
Differentiation and Pathogenicity Within the Saprolegniaceae
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 680 _____________________________ _____________________________ Differentiation and Pathogenicity within the Saprolegniaceae Studies on Physiology and Gene Expression Patterns in Saprolegnia parasitica and Aphanomyces astaci BY GUNNAR ANDERSSON ACTA UNIVERSITATIS UPSALIENSIS UPPSALA 2001 Dissertation for the Degree of Doctor of Philosophy in Physiological Mycology presented at Uppsala University in 2002 Abstract Andersson, M. G. 2001. Differentiation and Pathogenicity within the Saprolegniaceae. Studies on Physiology and Gene Expression Patterns in Saprolegnia parasitica and Aphanomyces astaci. Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 680, 41 pp. Uppsala. ISBN 91-554-5203-5. Saprolegnia parasitica and Aphanomyces astaci are parasitic water moulds belonging to the Oomycetes. Despite their importance as parasites they are very little studied at the molecular level and the work described in this thesis was aimed at increasing the molecular knowledge of these organisms by cloning and characterising genes of potential importance for reproduction and pathogenicity. Stage-specific transcripts from Saprolegnia parasitica were isolated by differential display RT-PCR. One of the markers, puf1 encodes a putative mRNA binding protein which may be involved in post-transcriptional regulation of gene expression. S. parasitica puf1 is expressed exclusively in spore cysts that have not been determined for germination or repeated zoospore emergence indicating that the cyst stage has two phases, of about equal duration, which are physiologically and transcriptionally distinct. A similar expression pattern is observed in Aphanomyces spp. with different regulation of spore development and in the transcript is detected in both primary and secondary cysts. -
Crayfish in Crisis
Crayfish in Crisis The rate of loss of White-clawed crayfish in England and Wales is rapid and shows no sign of slowing as Signal crayfish and other introduced crayfish invade more rivers. If this pattern continues, there is a high risk that White-clawed crayfish will become extinct in most of their current range in England and Wales over the next 20 years. Crayfish plague One of the major reasons for the decline in White-clawed crayfish is the spread of ‘Crayfish Plague’. The cause of this disease is a water mould called Aphanomyces astaci, which attacks the soft tissue of crayfish. It is carried and spread mostly by Signal crayfish (Pacifasticus leniusculus), which are unaffected by it. However other introduced crayfish species do carry plague, including the Red swamp (Procambarus clarkii) and the Spiny-cheeked (Orconectes limosus). Our White-clawed crayfish are not immune to plague and once introduced it rapidly kills off all that are present in an area in just a few weeks. Crayfish plague is easily moved between sites as it can be transported on wet angling equipment and wet clothes. The spores of crayfish plague can even remain active on damp gear for as long as 22 days. For more information about Non-native crayfish and disease, click here. Stopping the spread of crayfish plague All waterway users need to be aware about good practice to help prevent the spread of invasive crayfish species and diseases. Crayfish plague can be easily spread between sites on wet angling kit or water sports equipment. If you use rivers and lakes either as a walker, angler or for other activities (canoeists, divers, gorge walkers etc.), there are some simple things that you can do to help to prevent the spread of plague such as following the Check, Clean, Dry code in order to Stop the Spread of Crayfish Plague. -
Synopsis of Freshwater Crayfish Diseases and Commensal Organisms Brett .F Edgerton James Cook University, [email protected]
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Faculty Publications from the Harold W. Manter Parasitology, Harold W. Manter Laboratory of Laboratory of Parasitology 3-2002 Synopsis of Freshwater Crayfish Diseases and Commensal Organisms Brett .F Edgerton James Cook University, [email protected] Louis H. Evans Curtin University of Technology Frances J. Stephens Curtin University of Technology Robin M. Overstreet Gulf Coast Research Laboratory, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/parasitologyfacpubs Part of the Aquaculture and Fisheries Commons, and the Parasitology Commons Edgerton, Brett .;F Evans, Louis H.; Stephens, Frances J.; and Overstreet, Robin M., "Synopsis of Freshwater Crayfish Diseases and Commensal Organisms" (2002). Faculty Publications from the Harold W. Manter Laboratory of Parasitology. 884. https://digitalcommons.unl.edu/parasitologyfacpubs/884 This Article is brought to you for free and open access by the Parasitology, Harold W. Manter Laboratory of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Faculty Publications from the Harold W. Manter Laboratory of Parasitology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Published in Aquaculture 206:1–2 (March 2002), pp. 57–135; doi: 10.1016/S0044-8486(01)00865-1 Copyright © 2002 Elsevier Science. Creative Commons Attribution Non-Commercial No Deriva- tives License. Accepted October 18, 2001; published online November 30, 2001. Synopsis of Freshwater Crayfish Diseases and Commensal Organisms Brett F. Edgerton,1 Louis H. Evans,2 Frances J. Stephens,2 and Robin M. Overstreet3 1. Department of Microbiology and Immunology, James Cook University, Townsville, QLD 4810, Australia 2. -
Assessment of the Risk to Norwegian Biodiversity from Import and Keeping of Crustaceans in Freshwater Aquaria
VKM Report 2021: 02 Assessment of the risk to Norwegian biodiversity from import and keeping of crustaceans in freshwater aquaria Scientific Opinion of the Panel on Alien Organisms and Trade in Endangered Species of the Norwegian Scientific Committee for Food and Environment VKM Report 2021: 02 Assessment of the risk to Norwegian biodiversity from import and keeping of crustaceans in freshwater aquaria. Scientific Opinion of the Panel on Alien Organisms and trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food and Environment 15.02.2021 ISBN: 978-82-8259-356-4 ISSN: 2535-4019 Norwegian Scientific Committee for Food and Environment (VKM) Postboks 222 Skøyen 0213 Oslo Norway Phone: +47 21 62 28 00 Email: [email protected] vkm.no vkm.no/english Cover photo: Mohammed Anwarul Kabir Choudhury/Mostphotos.com Suggested citation: VKM, Gaute Velle, Lennart Edsman, Charlotte Evangelista, Stein Ivar Johnsen, Martin Malmstrøm, Trude Vrålstad, Hugo de Boer, Katrine Eldegard, Kjetil Hindar, Lars Robert Hole, Johanna Järnegren, Kyrre Kausrud, Inger Måren, Erlend B. Nilsen, Eli Rueness, Eva B. Thorstad and Anders Nielsen (2021). Assessment of the risk to Norwegian biodiversity from import and keeping of crustaceans in freshwater aquaria. Scientific Opinion of the Panel on Alien Organisms and trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food and Environment. VKM report 2021:02, ISBN: 978-82-8259- 356-4, ISSN: 2535-4019. Norwegian Scientific Committee for Food and Environment (VKM), Oslo, Norway. 2 Assessment of the risk to Norwegian biodiversity from import and keeping of crustaceans in freshwater aquaria Preparation of the opinion The Norwegian Scientific Committee for Food and Environment (Vitenskapskomiteen for mat og miljø, VKM) appointed a project group to draft the opinion. -
Invasive Alien Species Fact Sheet Aphanomyces Astaci
NOBANIS - Invasive Alien Species Fact Sheet Aphanomyces astaci Authors of this species fact sheet: Trude Vrålstad, Norwegian Veterinary Institute, P.O.Box 750 Sentrum, N-0106 Oslo, Norway: +47 23216247: [email protected] Stein I. Johnsen, Norwegian Institute for Nature Research (NINA), P.O.Box Fakkelgården, NO-2624 Lillehammer, Norway; +47 73801628; [email protected] Trond Taugbøl, Glommen’s and Laagen’s Water Management Association, P.O.Box 1209 Skurva, NO-2605 Lillehammer, Norway; +47 61268646; [email protected] Bibliographical reference – how to cite this fact sheet: Vrålstad, T., Johnsen, S. I. and Taugbøl, T. (2011): NOBANIS – Invasive Alien Species Fact Sheet – Aphanomyces astaci. – From: Online Database of the European Network on Invasive Alien Species – NOBANIS www.nobanis.org, Date of access x/x/201x. Species description Scientific names: Aphanomyces astaci (Schikora 1906), Saprolegniaceae, Oomycota. Synonyms: None Common names: crayfish plague (GB), krebsepest (DK), Krebspest, Wasserschimmel (DE), kräftpest (SE), krepsepest (NO), dżuma raków (PL), чyма paқов (RU), vēžu mēris (LV), vähikatk (EE), rapurutto (FI), račí mor (CZ). Fig. 1. Hyphae (a) and sporangium with emerging spore ball (b) of the oomycete Aphanomyces astaci. Photo ©: Trude Vrålstad (a) and David Strand (b), Norwegian Veterinary Institute. Species identification Aphanomyces astaci is an oomycete (water mould) that is not visible to eye. Using light microscope, non-septate, branching hyphae (cf. Fig. 1a), ca. 7-10 µm in diameter with rounded hyphal tips can be seen in the cuticle of infected crayfish (Evans & Edgerton 2002). It is impossible to identify the species based on hyphal morphology since many members of the Saprolegniaceae exhibit the same features. -
Crayfish Plague and Other Associations
CHAPTER 30. Parasites and Pathogens: the Crayfish Plague and Other Associations Saprolegniosis (Chapter 29) is a widespread, familiar disease (or a complex of diseases, perhaps) seemingly accorded only a lowly place in the economics of fisheries. Save for occasional outbreaks, it is a malady of endemic proportions with which the freshwater fisheries industries coexist. Not so the crayfish plague (Krebspest, Kräftpesten), caused by Aphanomyces astaci (Schikora, 1906). This is a disease of epidemic extent, and although it affects only a small industry -- the sale and export of edible crayfish, particularly in the Scandinavian Peninsula -- it seriously reduces populations of an animal regarded by many as an irreplaceable delicacy. In this chapter we consider what is known of the crayfish plague, and, as well, chronicle a miscellaneous assortment of case histories of other associations between animals and watermolds. THE CRAYFISH PLAGUE It generally is assumed (Unestam, 1969a) that crayfish plague was first discovered in Italy in 1860 (Seligo, 1895), but perhaps the malady that Ninni referred to in 1865, traced from the Italian province of Lombard, was this disease. In any case, the cause of crayfish disease epidemics was unknown at first. Seligo (1895) published the first extensive account of crayfish plague, noting that the cause had been variously attributed to ectoparasites, bacteria, and even to a vaguely defined “mycosis astacinus.” Although he was not certain that a real connection existed between the annelid worms inhabiting Elodea canadensis Mich. and certain Branchiobdellans (the latter allegedly caused the disease, and were transferred by the annelids), Seligo did not rule out such a possibility. -
Aphanomyces Euteiches Laurent Camborde
Fuctional characterization of different candidate effectors from the root rot oomycete Aphanomyces euteiches Laurent Camborde To cite this version: Laurent Camborde. Fuctional characterization of different candidate effectors from the root rot oomycete Aphanomyces euteiches. Vegetal Biology. Université Paul Sabatier - Toulouse III, 2020. English. NNT : 2020TOU30227. tel-03208760 HAL Id: tel-03208760 https://tel.archives-ouvertes.fr/tel-03208760 Submitted on 26 Apr 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Abstract Oomycetes are eukaryote pathogens able to infect plants and animals. During host interaction, oomycetes secrete various molecules, named effectors, to counteract plant defence and modulate plant immunity. Two different classes of cytoplasmic effectors have been described to date, Crinklers (CRNs) and RxLR proteins. The translocation process allowing the entrance into the host cells is still unclear, and while extended research gave insight into some molecular targets and role during infection, most of effectors have not been characterized. In the root rot pathogen of legumes Aphanomyces euteiches, only the CRNs are present. Based on a previous study reported by our research group, we published an opinion paper focused on the emergence of DNA damaging effectors and their role during infection. -
Understanding and Managing Biodiversity in Relation to Native Crayfish Populations in Europe
Bull. Fr. Pêche Piscic. (2003) 370-371 : 7-14 — 7 — UNDERSTANDING AND MANAGING BIODIVERSITY IN RELATION TO NATIVE CRAYFISH POPULATIONS IN EUROPE F. GHERARDI (1), C. SOUTY-GROSSET (2), J. REYNOLDS (3) (1) Dipartimento di Biologia Animale e Genetica « Leo Pardi », Università di Firenze, Via Romana 17, 50125 Firenze, Italy. E-Mail : [email protected] (2) UMR CNRS 6556 « Génétique et Biologie des Populations de Crustacés », Université de Poitiers, 40, avenue du Recteur Pineau, F-86022 Poitiers Cedex, France. E-Mail : [email protected] (3) Department of Zoology, University of Dublin, Trinity College, Dublin 2, Ireland. E-Mail : [email protected] ABSTRACT The loss or diminution of European crayfish populations because of both habitat deterioration and competition with alien crayfish – also responsible for the dissemination of the crayfish plague – would reduce the biodiversity at the species level. The topic “What is meant by biodiversity?” in the context of native freshwater crayfish in Europe was discussed during the Kilkenny CRAYNET meeting in order to make the point about the varied meanings of biodiversity from genes and individuals to population levels. Key-words : biodiversity, native crayfish, conservation, management. COMPRÉHENSION ET GESTION DE LA BIODIVERSITÉ CONCERNANT LES POPULATIONS D’ÉCREVISSES NATIVES D’EUROPE RÉSUMÉ La perte ou la diminution des populations d’écrevisses en Europe, à cause d’une part de la dégradation de l’habitat et d’autre part de la compétition avec les écrevisses exotiques introduites – et responsables de la dissémination de la peste de l’écrevisse – doit réduire la biodiversité au niveau de l’espèce. « Quelle est la signification de la biodiversité ? » dans le contexte des écrevisses natives d’Europe a été un sujet débattu au cours de la réunion CRAYNET de Kilkenny afin de faire le point sur la biodiversité au niveau du gène et de l’individu à celui de la population. -
Crayfish Plague - Disease Strategy Manual
Aquatic Animal Health Subprogram: Crayfish plague - disease strategy manual Frances Stephens March 2004 �� 1t Australian Government � Australian Government Department of Agriculture, Fisheries and Forestry fisheries Research and Oe,·elopmenl Corporation Author: Dr Frances Stephens Title: Aquatic Animal Health Subprogram: crayfishplague - disease strategy manual © Fisheries Research and Development Corporation & Murdoch University This work is copyright. Except as permitted under the Copyright Act 1968 (Cth), no part of this publication may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owners. Neither may informationbe stored electronically in any formwhatsoever without such permission. The Fisheries Research and Development Corporation plans, invests in and manages fisheries research and development throughout Australia. It is a federalstatutory authority jointly funded by the Australian Government and the fishing industry. Printed by Murdoch University ISBN O 86905 854 1 Aquatic Animal Health Subprogram: Crayfishplague - disease strategy manual Frances Stephens March 2004 FRDC Project No. 2002/641 . _Lt, , .. � Australian Gu\'ernment Australian Government "'f-., ' ;:1• Department of Agriculture, Fisheries and Forestry Fisheries Research and Development Corporation 2002/641 Aquatic Animal Health Subprogram: crayfish plague - disease strategy manual PRINCIPAL INVESTIGATOR: Dr Frances Stephens ADDRESS: Aquatilia Healthcare 30 Winsor Rd Kalamunda Western Australia 6076 Telephone: -
Edna Monitoring of a Crayfish Plague Outbreak in Norway
eDNA monitoring of a crayfish plague outbreak in Norway – snapshots of invasion, infection and extinction David Strand1,2, Stein Ivar Johnsen3, Johannes Rusch1, Steen Wilhelm Knudsen4, Sune Agersnap4, William Brenner Larsen4, Peter Rask-Møller4, Trude Vrålstad1 1Norwegian Veterinary Institute, 2Norwegian Institute for Water Research, 3 Norwegian Institute for Nature Research, 4 University of Copenhagen, Natural History Museum of Denmark Background Crayfish plague, caused by the oomycete Aphanomyces astaci, is the main reason for the drastic decline of European noble crayfish (Astacus astacus). North American signal crayfish, often illegally spread in Europe, are carriers of this pathogen (Fig.1) Monitoring of noble crayfish using baited traps in the Norwegian Lake Rødnessjøen in 2014 revealed illegally introduced signal crayfish (Pacifastacus leniusuculus) Detection of A.astaci suggested an emerging crayfish plague outbreak in the lake. Classic crayfish plague monitoring uses caged noble crayfish as living bait to monitor disease spread, crayfish monitoring uses baited traps (crayfish/trapnight=CPUE) We hypothesize that environmental DNA (eDNA) monitoring offers a better alternative, using non-invasive methods without sacrificing or disturbing live crayfish. Here, we compare eDNA monitoring with cage monitoring during the emerging Figure 1 - Crayfish plague (A. astaci; a-c) is lethal to European noble crayfish (right). American signal crayfish outbreak in the natural noble crayfish population in Lake Rødnessjøen. (left) is a natural host and carrier of this pathogen. Results and conclusions In this study, we were able to: Follow the frontline of the upstream spreading crayfish plague outbreak that reached ~20 km in one year over two interconnected lakes (Rødnessjøen and Skullerudsjøen) Detect the increase, peak, decline and disappearance of eDNA from A.