Molecular Markers, Indicator Taxa, and Community Indices: the Issue of Bioindication Accuracy
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Assessment of Pathogenic Bacteria Transfer from Pristionchus
Assessment of Pathogenic Bacteria Transfer From Pristionchus Entomophagus (Nematoda: Diplogasteridae) to the Invasive Ant Myrmica Rubra and Its Potential Role in Colony Mortality in Coastal Maine Suzanne Lynn Ishaq ( [email protected] ) School of Food and Agriculture, University of Maine, Orono, ME 04469 https://orcid.org/0000-0002- 2615-8055 Alice Hotopp University of Maine Samantha Silverbrand University of Maine Jonathan E. Dumont Husson University Amy Michaud University of California Davis Jean MacRae University of Maine S. Patricia Stock University of Arizona Eleanor Groden University of Maine Research Article Keywords: bacterial community, biological control, microbial transfer, nematodes, Illumina, Galleria mellonella larvae Posted Date: November 5th, 2020 DOI: https://doi.org/10.21203/rs.3.rs-101817/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Page 1/38 Abstract Background: Necromenic nematode Pristionchus entomophagus has been frequently found in nests of the invasive European ant Myrmica rubra in coastal Maine, United States. The nematodes may contribute to ant mortality and collapse of colonies by transferring environmental bacteria. M. rubra ants naturally hosting nematodes were collected from collapsed wild nests in Maine and used for bacteria identication. Virulence assays were carried out to validate acquisition and vectoring of environmental bacteria to the ants. Results: Multiple bacteria species, including Paenibacillus spp., were found in the nematodes’ digestive tract. Serratia marcescens, Serratia nematodiphila, and Pseudomonas uorescens were collected from the hemolymph of nematode-infected Galleria mellonella larvae. Variability was observed in insect virulence in relation to the site origin of the nematodes. In vitro assays conrmed uptake of RFP-labeled Pseudomonas aeruginosa strain PA14 by nematodes. -
Gastrointestinal Helminthic Parasites of Habituated Wild Chimpanzees
Aus dem Institut für Parasitologie und Tropenveterinärmedizin des Fachbereichs Veterinärmedizin der Freien Universität Berlin Gastrointestinal helminthic parasites of habituated wild chimpanzees (Pan troglodytes verus) in the Taï NP, Côte d’Ivoire − including characterization of cultured helminth developmental stages using genetic markers Inaugural-Dissertation zur Erlangung des Grades eines Doktors der Veterinärmedizin an der Freien Universität Berlin vorgelegt von Sonja Metzger Tierärztin aus München Berlin 2014 Journal-Nr.: 3727 Gedruckt mit Genehmigung des Fachbereichs Veterinärmedizin der Freien Universität Berlin Dekan: Univ.-Prof. Dr. Jürgen Zentek Erster Gutachter: Univ.-Prof. Dr. Georg von Samson-Himmelstjerna Zweiter Gutachter: Univ.-Prof. Dr. Heribert Hofer Dritter Gutachter: Univ.-Prof. Dr. Achim Gruber Deskriptoren (nach CAB-Thesaurus): chimpanzees, helminths, host parasite relationships, fecal examination, characterization, developmental stages, ribosomal RNA, mitochondrial DNA Tag der Promotion: 10.06.2015 Contents I INTRODUCTION ---------------------------------------------------- 1- 4 I.1 Background 1- 3 I.2 Study objectives 4 II LITERATURE OVERVIEW --------------------------------------- 5- 37 II.1 Taï National Park 5- 7 II.1.1 Location and climate 5- 6 II.1.2 Vegetation and fauna 6 II.1.3 Human pressure and impact on the park 7 II.2 Chimpanzees 7- 12 II.2.1 Status 7 II.2.2 Group sizes and composition 7- 9 II.2.3 Territories and ranging behavior 9 II.2.4 Diet and hunting behavior 9- 10 II.2.5 Contact with humans 10 II.2.6 -
Zhylina, Shevchenko.Pdf
ЕКОЛОГІЯ H. B. Humenyuk, V. O. Khomenchuk, N. G. Zinkovska Ternopil Volodymyr Hnatiuk National Pedagogical University, Ukraine Taras Shevchenko Regional Humanitarian-Pedagogical Academy of Kremenets, Ukraine TYPES OF MODELLING THE ENVIRONMENT AND PECULIARITIES OF THEIR USE It is found that mathematical or imitating modeling is one of the most useful and effective forms of modeling, which represent the most significant features of real objects, processes, systems and phenomena studied by various sciences. The main purpose of factor analysis - reducing the dimension of the source data for the purpose of economical description by providing minimal loss of the initial information. The result of factor analysis is the transition from the set output variables to significantly fewer new variables - factors. Factor is interpreted as a common cause of the variability of the multiple output variables. The value of the revealed factors is 4,37 and 1.98 respectively. The selected factors include 79,5% of general dispersion (54,7 and 24,8 % respectively). Thus the accumulated percentage of both factors dispersion (79,5 %) defines how fully we can describe the set of date with the help of selected factors. The higher this index is the larger part of the data was factorized and the more credible the factorial model is. In widespread application of modeling in solving the problem of knowledge and environmental protection the combination of two tendencies which are characteristic of the modern science are singled out – cybernation and ecologization. The information systems are used to choose the optimal ways of different resources application in order to predict the consequences of environmental pollution. -
Field Studies Reveal a Close Relative of C. Elegans Thrives in the Fresh Figs
Woodruf and Phillips BMC Ecol (2018) 18:26 https://doi.org/10.1186/s12898-018-0182-z BMC Ecology RESEARCH ARTICLE Open Access Field studies reveal a close relative of C. elegans thrives in the fresh fgs of Ficus septica and disperses on its Ceratosolen pollinating wasps Gavin C. Woodruf1,2* and Patrick C. Phillips2 Abstract Background: Biotic interactions are ubiquitous and require information from ecology, evolutionary biology, and functional genetics in order to be understood. However, study systems that are amenable to investigations across such disparate felds are rare. Figs and fg wasps are a classic system for ecology and evolutionary biology with poor functional genetics; Caenorhabditis elegans is a classic system for functional genetics with poor ecology. In order to help bridge these disciplines, here we describe the natural history of a close relative of C. elegans, Caenorhabditis inopi- nata, that is associated with the fg Ficus septica and its pollinating Ceratosolen wasps. Results: To understand the natural context of fg-associated Caenorhabditis, fresh F. septica fgs from four Okinawan islands were sampled, dissected, and observed under microscopy. C. inopinata was found in all islands where F. septica fgs were found. C.i nopinata was routinely found in the fg interior and almost never observed on the outside surface. C. inopinata was only found in pollinated fgs, and C. inopinata was more likely to be observed in fgs with more foun- dress pollinating wasps. Actively reproducing C. inopinata dominated early phase fgs, whereas late phase fgs with emerging wasp progeny harbored C. inopinata dauer larvae. Additionally, C. inopinata was observed dismounting from Ceratosolen pollinating wasps that were placed on agar plates. -
Capítulo 9 Chapter 9
CAPÍTULO 9 CHAPTER 9 LISTA DOS NEMÁTODES (NEMATODA) TERRESTRES DOS AÇORES LIST OF THE TERRESTRIAL NEMATODES (NEMATODA) FROM AZORES Autores (Authors) Paulo Vieira1, Dieter Sturhan2, Pedro Barbosa1, Ludovina Padre3 & Manuel Mota1 1 NemaLab/ICAAM, Departamento de Biologia, Universidade de Évora, 7002-554 Évora, Portugal; e-mails: [email protected]; pm- [email protected]; [email protected]. 2 Formerly: Biologische Bundesanstalt, Institut für Nematologie und Wirbeltierkunde, Toppheideweg 88, 48161 Münster, Germany; e-mail: [email protected]. 3 Laboratório de Parasitologia Victor Caeiro, Departamento de Medicina Veterinária, Universidade de Évora, 7002-554 Évora, Portu- gal; e-mail: [email protected]. 157 Notas explicativas Explanatory notes Os nemátodes são um grupo de invertebrados, não Nematodes are a group of non-segmented invertebrates, segmentados que formam um filo (Nematoda) bem which constitute a well defined phylum (Nematoda) definido e claramente distinto dos outros grupos de or- distinct from other animal groups. This phylum is one of ganismos. Este filo constitui um dos grupos animais the most disseminated group of animals in the planet and mais disseminados no planeta, e em termos de número the most abundant: it is estimated that four out of every de indivíduos, os nemátodes são o grupo animal mais five animals in the biosphere are nematodes. Despite abundante na Terra: quatro em cada cinco animais da being microscopic, these multicellular animals are biosfera são nemátodes. Apesar de microscópicos, os capable of exploring a wide variety of habitats including animais multicelulares que constituem este grupo são oceans, fresh waters, soils, animals and plant, and even capazes de explorar uma enorme variedade de habi- extreme environments such as dry soils in the Antarctica tats, nos mares, nas águas doces, nos solos, bem como or thermal vents (Baldwin et al. -
Alteration of Microflora of the Facultative Parasitic Nematode Pristionchus Entomophagus and Its Potential Application As a Biological Control Agent
The University of Maine DigitalCommons@UMaine Honors College 5-2013 Alteration of Microflora of the Facultative Parasitic Nematode Pristionchus Entomophagus and its Potential Application as a Biological Control Agent Amy M. Michaud University of Maine - Main Follow this and additional works at: https://digitalcommons.library.umaine.edu/honors Part of the Biology Commons, Entomology Commons, and the Parasitology Commons Recommended Citation Michaud, Amy M., "Alteration of Microflora of the Facultative Parasitic Nematode Pristionchus Entomophagus and its Potential Application as a Biological Control Agent" (2013). Honors College. 134. https://digitalcommons.library.umaine.edu/honors/134 This Honors Thesis is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in Honors College by an authorized administrator of DigitalCommons@UMaine. For more information, please contact [email protected]. ALTERATION OF MICROFLORA OF THE FACULTATIVE PARASITIC NEMATODE PRISTIONCHUS ENTOMOPHAGUS AND ITS POTENTIAL APPLICATION AS A BIOLOGICAL CONTROL AGENT by Amy M. Michaud A Thesis Submitted in Partial Fulfillment of the Requirements for a Degree with Honors (Biology) The Honors College University of Maine May 2013 Advisory Committee: Dr. Eleanor Groden, Professor of Entomology, Advisor Dr. Dave Lambert, Associate Professor of Plant Pathology Elissa Ballman, Research Associate in Invasive Species and Entomology Dr. Francois Amar, Associate Professor of Physical Chemistry Dr. John Singer, Professor of Microbiology Abstract: Pristionchus entomophagus is a microbivorous, facultative, parasitic nematode commonly found in soil and decaying organic matter in North America and Europe. This nematode can form an alternative juvenile life stage capable of infecting an insect host. The microflora of P. -
Speciation and Adaptive Radiation in the Fig Wasp Nematode, Parasitodiplagaster (Diplogasteridae : Rhabditida) in Panama George O
Speciation and adaptive radiation in the fig wasp nematode, Parasitodiplagaster (Diplogasteridae : Rhabditida) in Panama George O. POINAR,Jr. and Edward A. HERRE Department of Entomological Sciences, University of California, Berkeley, CA 94720, USA and Snzithsonian Tropical Research Institute,Apartado 2072, Balboa, Republic of Panama, SUMMARY The following species of the hereby redefined genus Parasitodiplogaster are described from fruits of Ficus spp. in Panama : P. citrinema n. sp. from F. citrifolia P. Miller, P. duganema n. sp. from F. dugandii Standl., P. mminema n. sp. from F. maxima P. Miller, P. nymphanema n. sp. frorn E nymphaeifolia L., P. obtusinema n. sp. frorn E obtusifolia HBK, P. paranema n. sp. from F. paraensis (Miq.) Miq., P. pertanema n. sp. from F. pertusa L. f., P. popenema n. sp. from E popenoei Standl., P. trigonema n. sp. from E trigonata L. and P. yoponema n. sp. from E yoponensis Desv. Al1 of the above species, which are presumed to have evolved from a free-living diplogasterid stem species, represent alloparric species which are carriedby specific figwasp species to specific fig fruitspecies. The diverse morphological characters (especially those ofthe alimentary tract) exhibited among these ten new species of fig wasp nematodes represent examplesof selective adaptation to physical and nutritional conditions foundin the fruits (sycones) of the different fig species. &SUME Spéciation et divergence adaptative chez le nématode de la guêpe du figuierParasitodiplogaster (Rhabditida :Diplogasteridae) au Panama Le genre Parasitodiplogaster est redéfini et les espèces nouvelles suivantes, provenant de fruits de Ficus spp. au Panama, sont décrites :P. citrinema n. sp. surE citrifolia P. -
Management of the Invasive Alien Snail Cantareus Aspersus on Conservation Land
Management of the invasive alien snail Cantareus aspersus on conservation land DOC SCIENCE INTERNAL SERIES 31 Gary M. Barker and Corinne Watts Published by Department of Conservation P.O. Box 10-420 Wellington, New Zealand DOC Science Internal Series is a published record of scientific research carried out, or advice given, by Department of Conservation staff, or external contractors funded by DOC. It comprises progress reports and short communications that are generally peer-reviewed within DOC, but not always externally refereed. Fully refereed contract reports funded from the Conservation Services Levy are also included. Individual contributions to the series are first released on the departmental intranet in pdf form. Hardcopy is printed, bound, and distributed at regular intervals. Titles are listed in the DOC Science Publishing catalogue on the departmental website http://www.doc.govt.nz and electronic copies of CSL papers can be downloaded from http://csl.doc.govt.nz © January 2002, New Zealand Department of Conservation ISSN 1175–6519 ISBN 0–478–22206–8 This is a client report commissioned by Northland Conservancy and funded from the Unprogrammed Science Advice fund. It was prepared for publication by DOC Science Publishing, Science & Research Unit; editing and layout by Geoff Gregory. Publication was approved by the Manager, Science & Research Unit, Science Technology and Information Services, Department of Conservation, Wellington. CONTENTS Abstract 5 1. Introduction 6 1.1 Objectives 7 2. Principles of mollusc pest management 8 2.1 Control options 8 2.1.1 Biological control 8 2.1.2 Manual control 9 2.1.3 Chemical control 9 2.2 Control strategies 11 2.3 Control success with molluscicidal baits 11 3. -
The Wisconsin Integrated Cropping Systems Trial - Sixth Report
THE WISCONSIN INTEGRATED CROPPING SYSTEMS TRIAL - SIXTH REPORT TABLE OF CONTENTS Prologue ..................................................... Introduction .................................................... ii MAIN SYSTEMS TRIAL -1996 1 . Arlington Agricultural Research Station - 1996 Agronomic Report . 1 2. Lakeland Agricultural Complex - 1996 Agronomic Report .................. 3 3. Weed Seed Bank Changes: 1990 To 1996 ............................ 9 4. Monitoring Fall Nitrates in the Wisconsin Integrated Cropping Systems Trial . 18 5. WICST Intensive Rotational Grazing of Dairy Heifers .................... 26 6. Wisconsin Integrated Cropping Systems Trial Economic Analysis - 1996 ...... 32 WICST SATELLITE TRIALS - 1996 8. Cropping System Three Chemlite Satellite Trial - Arlington, 1995 and 1996 .... 35 9. Corn Response to Commercial Fertilizer in a Low Input Cash Grain System ..... 36 10. WICST On-Farm Cover Crop Research .............................. 38 11 . Summer Seeded Cover Crops - Phase 1, 1996 ........................ 43 12. Improving Weed Control Using a Rotary Hoe .......................... 49 WICST SOIL BIODIVERSITY STUDY - 1996 13. Preliminary Report on Developing Sampling Procedures and Biodiversity Indices 53 14. Soil Invertebrates Associated with 1996 Soil Core Sampling and Residue Decomposition . 66 15. Analysis of Soil Macroartropods Associated with Pitfall Traps in the Wisconsin Integrated Cropping Systems Trial, 1995 ............................ 71 16. Biodiversity of Pythium and Fusarium from Zea mays in different -
Állattani Közlemények a Magyar Biológiai Társaság Állattani Szak- Osztályának Folyóirata
ALL ATT AN I KÖZLEMÉNYEK A MAGYAR BIOLÓGIAI TÁRSASÁG ÁLLATTANI SZAKOSZTÁLYÁNAK FOLYÓIRATA SZERKESZTI ANDRÁSSY I STYÁN LIX. KÖTET, 1-4. FÜZET uiv II II V — 1 AKADÉMIAI KIADÓ, BUDAPEST 1972 Az Állattani Közlemények a Magyar Biológiai Társaság Állattani Szak- osztályának folyóirata. Megjelenik évenként egy kötetben, 12 ív terjedelemben. A folyóiratban - a »Rövid Közlemények«-et kivéve csak azok a cikkek közöl- hetők, amelyek tartalmáról a szerző az Állattani Szakosztály egyik ülésén be- számolt. A szerkesztőség kéri a szerzőket, hogy közlésre szánt kéziratukat az illető előadás elhangzása után lehetőleg nyomban juttassák el a szerkesztő cí- mére: DR. ANDRÁSSY ISTVÁN, ELTE Állatrendszertani Tanszék, Budapest, VIII. Puskin u. 3. A kéziratokat két gépelt példányban, oldalanként 25— 30 sorral (ritka sorközzel gépelve), tipizálás (aláhúzás) nélkül kell elkészíteni. Az esetleges meg- jegyzéseket, szedési kívánalmakat külön lapon kell mellékelni. Az egyes cikkek terjedelme általában az egy nyomtatott ívet nem haladhatja meg. Az ábrák lehetnek fehér kartonra vagy pauszpapírra készített vonalas tusrajzok, illetve fényképek esetében reprodukcióra alkalmas, éles pozitívok. Az irodalomjegyzék összeállítására nézve a jelen kötet irodalomjegyzékei az irányadók. Minden kézirathoz rövid összefoglalást is kell mellékelni az idegen nyelvű kivonat szá- mára. MEGEMLÉKEZÉS DIL DUDICH ENDRÉRŐL (1895 —197D írta: Soós ÁRPÁD (Természettudományi Múzeum Állattára, Budapest) Éppen egy évvel ezelőtt, februári szakülésünk végén kaptuk a váratlan és megdöbbentő hírt, -
First Record of Diploscapter Coronata (Rhabditida), a Possible Health Significance Nematode Associated with Tomato Crops in Argentina
Rev. FCA UNCUYO. 2016. XX(X): XXX-XXX. ISSN impreso 0370-4661. ISSN (en línea) 1853-8665. First record of Diploscapter coronata (Rhabditida), a possible health significance nematode associated with tomato crops in Argentina Primer registro de Diploscapter coronata (Rhabditida), un posible nematodo de importancia sanitaria asociado a cultivos de tomate en Argentina Augusto Salas 1, José Matías Rusconi 1, Nora Camino 1, 2, Daiana Eliceche 1, María Fernanda Achinelly 1, 3 Originales: Recepción: 21/03/2016 - Aceptación: 08/10/2016 Nota científica Abstract Diploscapter coronata is a free-living soil bacterial-feeding nematode found in compost, sewage or agricultural soil and as a facultative parasite of insects and verte- brates, even humans. The clinical symptoms include epigastric tenderness, diarrhea, crampy abdominal pain, weakness and nauseas. Also, they have been considered as potential carriers of bacteria pathogenic to the surface of preharvest fruits and vegetables in contact with soil. In this note, we reported the presence of D. coronata in the framework Argentina. Soil samples taken from tomato growing (Lycopersicon esculentum) were processedof diverse soilin the nematodes laboratory samplings by the centrifugationin orchards of Abastomethod, town, while Buenos collected Aires roots province, were observed directly under stereomicroscope in order to isolate nematodes. Specimens presence of D. coronata in agricultural soil and in association with root galls, caused by thewere plant-parasitic identified by morphologicalnematode, Nacobbus and morphometric aberrans. Females characteristics. were the Resultsonly isolated showed stage. the The detection of this nematode in greenhouses where dogs, cats and poultry live together without any health control highlights the importance of applying proper hygiene measures during agricultural practices to avoid contamination of fruits and vegetables and prevent Diploscapter genus with the species D. -
Teladorsagia Circumcincta Michael Stear¹*, David Piedrafita², Sarah Sloan¹, Dalal Alenizi¹, Callum Cairns¹, Caitlin Jenvey¹
WikiJournal of Science, 2019, 2(1):4 doi: 10.15347/wjs/004 Encyclopedic Review Article Teladorsagia circumcincta Michael Stear¹*, David Piedrafita², Sarah Sloan¹, Dalal Alenizi¹, Callum Cairns¹, Caitlin Jenvey¹ Abstract One of the most important parasites of sheep and goats is the nematode Teladorsagia circumcincta. This is com- mon in cool, temperate areas. There is considerable variation among lambs and kids in susceptibility to infection. Much of the variation is genetic and influences the immune response. The parasite induces a type I hypersensitivy response which is responsible for the relative protein deficiency which is characteristic of severely infected ani- mals. There are mechanistic mathematical models which can predict the course of infection. There are a variety of ways to control the infection and a combination of control measures is likely to provide the most effective and sustainable control. Introduction Teladorsagia circumcincta is a nematode that parasitises Morphology sheep and goats. It was previously known as Ostertagia circumcincta and is colloquially known as the brown Adults are slender with a short buccal cavity and are [7] stomach worm. It is common in cool temperate areas, ruddy brown in colour. The average worm size varies such as south-eastern and south-western Australia and considerably among sheep. Females range in size from [8] the United Kingdom. Teladorsagia davtiani and Telador- 0.6 to 1.2 cm with males typically about 20% [7] sagia trifurcata are probably phenotypic variants smaller. (morphotypes) of T. circumcincta.[1] This parasite is re- sponsible for considerable economic losses in sheep,[2][3][4] and is believed to cause severe losses in Life cycle goats although there is a relative dearth of research in The life cycle is relatively simple.