Antoine, Alexandre LECLERC
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Contrasts in the Prevalence of Avian Malaria in Shorebird Species
University of Groningen Disease-limited distributions? Contrasts in the prevalence of avian malaria in shorebird species using marine and freshwater habitats Mendes, L; Piersma, T; Lecoq, M; Spaans, B; Ricklefs, RE; Ricklefs, Robert E. Published in: Oikos DOI: 10.1111/j.0030-1299.2005.13509.x IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 2005 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Mendes, L., Piersma, T., Lecoq, M., Spaans, B., Ricklefs, RE., & Ricklefs, R. E. (2005). Disease-limited distributions? Contrasts in the prevalence of avian malaria in shorebird species using marine and freshwater habitats. Oikos, 109(2), 396-404. https://doi.org/10.1111/j.0030-1299.2005.13509.x Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Download date: 27-09-2021 OIKOS 109: 396Á/404, 2005 Disease-limited distributions? Contrasts in the prevalence of avian malaria in shorebird species using marine and freshwater habitats Luisa Mendes, Theunis Piersma, Miguel Lecoq, Bernard Spaans and Robert E. -
Toxoplasma Gondii Sequesters Centromeres to a Specific Nuclear
Toxoplasma gondii sequesters centromeres to a specific nuclear region throughout the cell cycle Carrie F. Brooksa, Maria E. Franciab, Mathieu Gissotc,d,1, Matthew M. Crokenc,d, Kami Kimc,d,2, and Boris Striepena,b,2 aCenter for Tropical and Emerging Global Diseases and bDepartment of Cellular Biology, University of Georgia, Athens, GA 30602; and Departments of cMedicine and dMicrobiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461 Edited by Thomas E. Wellems, National Institutes of Health, Bethesda, MD, and approved January 20, 2011 (received for review May 24, 2010) Members of the eukaryotic phylum Apicomplexa are the cause of testine (6). The molecular mechanisms that regulate apicomplexan important human diseases including malaria, toxoplasmosis, and cell division and allow this remarkable flexibility of the cell and cryptosporidiosis. These obligate intracellular parasites produce nuclear division cycle remain poorly understood (7). An important new invasive stages through a complex budding process. The bud- unsolved question is how apicomplexan daughter cells emerge ding cycle is remarkably flexible and can produce varied numbers of with the complete set of chromosomes (∼10 depending on species) progeny to adapt to different host-cell niches. How this complex after passing through multinucleated and polyploid stages. In process is coordinated remains poorly understood. Using Toxo- Sarcocystis neurona the mitotic spindle persists throughout the plasma gondii as a genetic model, we show that a key element to cell cycle, and small monopolar spindles housed in a specialized this coordination is the centrocone, a unique elaboration of the nu- elaboration of the nuclear envelope, the centrocone, are evident clear envelope that houses the mitotic spindle. -
The Fine Structure of the Exoerythrocytic Stages of Plasmodium
THE FINE STRUCTURE OF THE EXOERYTHROCYTIC STAGES OF PLASMODIUM FALLAX PETER K. HEPLER, CLAY G. HUFF, and HELMUTH SPRINZ From the Department of Experimental Pathology, Walter Reed Army Institute of Research, Washington, D. C., and the Department of Parasitology, Naval Medical Research Institute, Bethesda, Maryland. Dr. Hepler's present address is the Biological Laboratories, Harvard University, Cambridge. ABSTRACT The fine structure of the exoerythrocytic cycle of an avian malarial parasite, Plasmodium fallax, has been analyzed using preparations grown in a tissue culture system derived from embryonic turkey brain cells which were fixed in glutaraldehyde-OsO4. The mature mero- zoite, an elongated cell 3- to 4-/~ long and l- to 2-# wide, is ensheathed in a complex double- layered pellicle. The anterior end consists of a conoid, from which emanate two lobed paired organelles and several closely associated dense bodies. A nucleus is situated in the mid portion of the cell, while a single mitochondrion wrapped around a spherical body is found in the posterior end. On the pellicle of the merozoite near the nucleus a cytostomal cavity, 80 to 100 m/~ in diameter, is located. Based on changes in fine structure, the subse- quent sequence of development is divided into three phases: first, the dedifferentiation phase, in which the merozoite loses many complex structures, i.e. the conoid, paired organelles, dense bodies, spherical body, and the thick inner layers of the pellicle, and transforms into a trophozoite; second, the growth phase, which consists of many nuclear divisions as well as parallel increases in mitochondria, endoplasmic reticulum, and ribosomes; and third, the redifferentiation and cytoplasmic schizogony phase, in which the specialized organelles reappear as the new merozoites bud off from the mother schizont. -
The Sub-Genera of Avian Plasmodium Landau I.*, Chavatte J.M.*, Peters W.** & Chabaud A.*
Landau (MEP) 28/01/10 10:07 Page 3 Article available at http://www.parasite-journal.org or http://dx.doi.org/10.1051/parasite/2010171003 THE SUB-GENERA OF AVIAN PLASMODIUM LANDAU I.*, CHAVATTE J.M.*, PETERS W.** & CHABAUD A.* Summary: Résumé : LES SOUS-GENRES DE PLASMODIUM AVIAIRE The study of the morphology of a species of Plasmodium is difficult La morphologie d’un Plasmodium est difficile à étudier car on because these organisms have relatively few characters. The size dispose de peu de caractères. La taille d’un schizonte, facile à of the schizont, for example, which is easy to assess is important apprécier, est significative au niveau spécifique mais n’a pas at the specific level but is not always of great phylogenetic toujours une grande valeur phylogénique. Le métabolisme du significance. Factors reflecting the parasite’s metabolism provide parasite fournit des éléments plus importants. Ainsi, la situation du more important evidence. Thus the position of the parasite within parasite à l’intérieur de l’hématie (accolé au noyau, ou à la the host red cell (attachment to the host nucleus or its membrane, membrane, au sommet ou le long du noyau) se révèle très at one end or aligned with it) has been shown to be constant for constant chez chaque espèce. Un autre caractère, de valeur a given species. Another structure of essential significance that is essentielle, trop souvent négligé, est le globule le plus souvent often ignored is a globule, usually refringent in nature, that was réfringent, décrit pour la première fois chez Plasmodium vaughani first decribed in Plasmodium vaughani Novy & MacNeal, 1904 Novy & MacNeal, 1904 et que nous considérons comme and that we consider to be characteristic of the sub-genus caractéristique du sous-genre Novyella. -
Exploring the Roles of Phosphoinositides in the Biology of the Malaria Parasite Plasmodium Falciparum
Exploring the roles of phosphoinositides in the biology of the malaria parasite Plasmodium falciparum Thèse Zeinab Ebrahimzadeh Doctorat en microbiologie-immunologie Philosophiæ doctor (Ph. D.) Québec, Canada © Zeinab Ebrahimzadeh, 2019 Exploring the roles of phosphoinositides in the biology of the malaria parasite Plasmodium falciparum Thèse Zeinab Ebrahimzadeh M. Sc. Dave Richard, directeur de recherche Résumé Plasmodium falciparum est un parasite appartenant au phylum Apicomplexa et est à l’origine de la forme la plus sévère de la malaria. Dans les zones endémiques d'Afrique subsaharienne, la plupart des victimes sont des enfants de moins de cinq ans. L’entrée de P. falciparum dans sa cellule cible, le globule rouge, repose sur la sécrétion de protéines par des organites spécialisés : les micronèmes, les rhoptries et les granules denses. Les mécanismes de biogenèse de ces organites et la coordination de la libération de leur contenu lors de l'invasion sont cependant pour la plupart inconnus. Il a été toutefois été démontré que les protéines destinées à ces organites apicaux se concentrent dans des microdomaines de l’appareil de Golgi, dont la composition en lipides et en protéines détermine leur destination finale. À ce jour, les mécanismes de sélection et de transport des protéines apicales vers les organites d'invasion ainsi que leurs mécanismes de sécrétion durant l’invasion sont pour la plupart inconnus. Nous avons donc posé l’hypothèse que les phosphoinositides (PI) et leurs protéines effectrices sont impliqués dans ces processus chez P. falciparum. Les PI sont sept lipides phosphorylés retrouvés de façon minoritaire dans les différentes membranes cellulaires. Chaque membrane subcellulaire contient une espèce caractéristique de PI qui peut être reconnue et liée spécifiquement par des protéines effectrices. -
Ultrastructural Observations on the Merocyst and Gametocytes of Hepatocystis Spp
ANNALES DE PARASITOLOGIE HUMAINE ET COMPARÉE Tome 51 1976 N° 6 Annales de Parasitologie (Paris), 1976, t. 51, n° 6, pp. 607 à 623 MEMOIRES ORIGINAUX Ultrastructural observations on the merocyst and gametocytes of Hepatocystis spp. from Malaysian squirrels by Elizabeth U. CANNING, R. E. SINDEN, Irène LANDAU and F. MILTGEN Department of Zoology, Imperial College, London SW7, England, Laboratoire de Zoologie (Vers), Museum national d'Histoire naturelle, F 75231 Paris Cedex 05 Summary. An immature merocyst of Hepatocystis malayensis and gametocytes of H. brayi were studied with the electron microscope. The merocyst consisted of a highly complex cyto plasmic reticulum ramifying through an amorphous matrix: the entire complex was enclosed by a simple unit membrane. The host cell was apparently destroyed completely during growth of the cyst. Immature gametocytes were highly amoeboid and showed extensive vacuolisation or attenuation of the cytoplasm. The nucleus contained one or two prominent nucleoli. Mature gametocytes had compact cytoplasm and contained pyriform osmiophilic bodies which were believed to function in the release of the parasites from the host cells. Macrogametocytes were distinguished from microgametocytes by cytoplasmic differences in numbers of ribosomes, and cristate mitochondria and in the extent of development of the smooth endoplasmic reticulum. The compact nuclei of the macrogametocytes had inconspicuous DNA but prominent nucleoli whereas those of the microgametocytes were irregular and showed a central aggregate of DNA. Annales de Parasitologie humaine et comparée (Paris), t. 51, n° 6 39 Article available at http://www.parasite-journal.org or https://doi.org/10.1051/parasite/1976516607 608 ELIZABETH U. CANNING, R. -
The Development of the Sporozoite of Plasmodium Gallinaceum (Apicomplexa : Haemosporina)
THE DEVELOPMENT OF THE SPOROZOITE OF PLASMODIUM GALLINACEUM (APICOMPLEXA : HAEMOSPORINA) by David Peter Turner, B.Sc. (Lond.), A.R.C.S. A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy of the University of London Department of Zoology and Applied Entomology, Imperial College Field Station, Silwood Park, Ascot, Berkshire, SL5 7PY. May 1980 TO MY MOTHER AND FATHER WITH AFFECTION AND GRATITUDE This day relenting God Hath placed within my hand A wondrous thing; and God Be praised. At his command, Seeking His secret deeds With tears and toiling breath, I find thy cunning seeds, 0 million-murdering Death. Sir Ronald, Ross Inspired by his discovery of the wonderful "pigmented cells" (oocysts) protruding from the stomach wall of a dapple-wing mosquito. -4 ABSTRACT This thesis describes an investigation into the development of the P. gallinaceum sporozoite. Observations by light microscopy failed to distinguish between sporozoites from mature oocysts and those from salivary glands. The only significant morphological change at the ultrastructural level occurred in the organisation of the rhoptry-microneme complex and resulted in a proliferation of the micronemes and a disappearance of the rhoptries in the salivary gland forms. The cell surface properties of sporozoites were investigated by the techniques of free-flow electrophoresis and lectin-binding studies. The electrophoretic mobility of sporozoites was measured as a function of pH and data from these observations demonstrated that there was a significant reduction in cell surface charge of salivary gland sporo- zoites, compared to sporozoites from mature oocysts and qualitative differences between the two populations were shown to exist. -
Hemoparasites of the Reptilia
HEMOPARASITES OF THE REPTILIA COLOR ATLAS AND TEXT HEMOPARASITES OF THE REPTILIA COLOR ATLAS AND TEXT SAM ROUNTREE TELFORD, JR. The Florida Museum of Natural History University of Florida Gainesville, Florida Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2009 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Printed in the United States of America on acid-free paper 10 9 8 7 6 5 4 3 2 1 International Standard Book Number-13: 978-1-4200-8040-7 (Hardcover) This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. -
The Evolution, Metabolism and Functions of the Apicoplast
Downloaded from rstb.royalsocietypublishing.org on March 31, 2010 The evolution, metabolism and functions of the apicoplast Liting Lim and Geoffrey Ian McFadden Phil. Trans. R. Soc. B 2010 365, 749-763 doi: 10.1098/rstb.2009.0273 References This article cites 122 articles, 50 of which can be accessed free http://rstb.royalsocietypublishing.org/content/365/1541/749.full.html#ref-list-1 This article is free to access Rapid response Respond to this article http://rstb.royalsocietypublishing.org/letters/submit/royptb;365/1541/749 Subject collections Articles on similar topics can be found in the following collections biogeochemistry (10 articles) bioinformatics (83 articles) cellular biology (59 articles) evolution (1569 articles) Receive free email alerts when new articles cite this article - sign up in the box at the top Email alerting service right-hand corner of the article or click here To subscribe to Phil. Trans. R. Soc. B go to: http://rstb.royalsocietypublishing.org/subscriptions This journal is © 2010 The Royal Society Downloaded from rstb.royalsocietypublishing.org on March 31, 2010 Phil. Trans. R. Soc. B (2010) 365, 749–763 doi:10.1098/rstb.2009.0273 Review The evolution, metabolism and functions of the apicoplast Liting Lim and Geoffrey Ian McFadden* School of Botany, University of Melbourne, Parkville, Victoria 3010, Australia The malaria parasite, Plasmodium falciparum, harbours a relict plastid known as the ‘apicoplast’. The discovery of the apicoplast ushered in an exciting new prospect for drug development against the para- site. The eubacterial ancestry of the organelle offers a wealth of opportunities for the development of therapeutic interventions. -
Adaptive Algorithm to Enhance the Fast Method Of
Jasim Iraqi Iraqi Journal Journal of of Science Science, Vol.47, No. 1, 2006, PP. 50-53 HAEMATOZOA of Some FALCONIFORMES (AVES) of Iraq Mohammad K. Jasim Iraq Natural History Museum, University of Baghdad. Baghdad, Iraq Received: 6/9/2003 Accepted: 21/1/2004 Abstract Twenty-two out of 97 specimens of falconiform birds collected at different areas of Iraq, which belong to nine species, were found infected with blood parasites. Five species of haematozoa were recovered. Microfilariae were the most common parasite with an infection rate of 12.4% followed by Haemoproteas tinnunculus, Leucocytozoon toddi, Plasmodium fallax, P. relictum and Trypanosoma avium complex with infection rates of 10.3%, 5.2%, 4.1% and 1% respectively. Two species, Leucocytozoon toddi and Plasmodium fallax are found to be new host records. اﻟﺧﻼﺻﺔ ﻣن أﺻﻝ 97 ﻧﻣوذﺟﺎً ﻣن اﻟطﻳور اﻟﺻﻘرﻳﺔ ﺗم ﺟﻣﻌﻬﺎ ﻣن ﻣﻧﺎطق ﻣﺧﺗﻠﻔﺔ ﻣن اﻟﻌراق وﺟد ﺑﺄن 22 ﻣﻧﻬـﺎ ﻣـﺻﺎﺑﺔ ﺑواﺣـــدة أو أﻛﺛـــر ﻣـــن ﺧﻣـــﺳﺔ أﻧـــواع ﻣـــن طﻔﻳﻠﻳـــﺎت اﻟـــدم ﺗـــم اﻟﺣـــﺻوﻝ ﻋﻠﻳﻬـــﺎ. ﻛﺎﻧـــت اﻟﻳرﻗـــﺎت اﻟدﻗﻳﻘـــﺔ ﻟدﻳـــدان اﻟﻔﻼرﻳـــﺎ (microfilaria) ﻫـــــﻲ اﻷوﺳـــــﻊ أﻧﺗـــــﺷﺎراً وﺑﻣﻌـــــدﻝ أﺻـــــﺎﺑﺔ ﻳﺑﻠـــــﻎ 12.4% ﻳﺗﺑﻌﻬـــــﺎ ﺑ ﺎ ﻟ ﺗ رﺗﻳـــــب ﻫﻳﻣوﺑروﺗﻳـــــوس ﺗﻧـــــﻧﻛﻠس Haemoproteus tinnunclus وﻟﻳوﻛوﺳﺎﻳﺗوزون ﺗودي Leucocytozoon toddi وﺑﻼزﻣودﻳوم Plasmodium (ﻧوﻋـﺎن ﻫﻣـﺎ: P. fallax و P. relictum) وﺗرﺑﺎﻧوﺳـوﻣﺎ اﻳﻔﻳـوم Trypanosoma avium وﺑﻧـﺳب أﺻـﺎﺑﺔ ﺗﺑﻠـﻎ 10.3 % و 5.2 % و 4.1 % و 1% ﻋﻠﻰ اﻟﺗواﻟﻲ. وﻗـد ﺳـﺟﻝ أﺛﻧـﺎن ﻣـن اﻟطﻔﻳﻠﻳـﺎت ﻫﻣـﺎ Leucocytozoon toddi و Plasmodium fallax ﻛﺗﺳﺟﻳﻼت ﺟدﻳدة ﻟﻠﻣﺿﻳف. Introduction The aim of the present work is to investigate The order falconiformes comprises 35 haematozoa of some falconiform birds collected species of birds in Iraq. This includes vultures, in Iraq as well as to discuss pertinent taxonomic eagles, buzzards, hawks, kites, harriers, falcons notes on the parasites. -
Contrasts in the Prevalence of Avian Malaria in Shorebird Species Using Marine and Freshwater Habitats
OIKOS 109: 396Á/404, 2005 Disease-limited distributions? Contrasts in the prevalence of avian malaria in shorebird species using marine and freshwater habitats Luisa Mendes, Theunis Piersma, Miguel Lecoq, Bernard Spaans and Robert E. Ricklefs Mendes, L., Piersma, T., Lecoq, M., Spaans, B. and Ricklefs, R. E. 2005. Disease- limited distributions? Contrasts in the prevalence of avian malaria in shorebird species using marine and freshwater habitats. Á/ Oikos 109: 396Á/404. Migratory shorebirds show strong dichotomies in habitat choice during both the breeding and nonbreeding season. Whereas High Arctic breeding species are restricted to coastal marine and saline habitats during the nonbreeding season, more southerly breeding species tend to use freshwater habitats away from coasts. It has been proposed that this co-variation in habitat use is a consequence of a single axis of adaptation to pathogens and parasites, which are hypothesized to be relatively scarce in High Arctic, marine, and saline habitats and relatively common at lower latitudes and in freshwater habitats. Here we examine this contrast by comparing the prevalence of avian malaria infections in shorebirds occupying different habitats. We used a PCR-based assay on 1319 individuals from 31 shorebird species sampled in the Arctic, in temperate Europe and in inland and marine habitats in West Africa. Infections mainly occurred in tropical wetlands, with the shorebirds in freshwater inland habitats having significantly higher prevalence of malaria than birds in marine coastal habitats. Infections were not found in birds migrating through Europe even though conspecifics did show infections in tropical Africa. Adults should resist infection better than juveniles, but showed higher malaria prevalence, suggesting that infection probability increases with cumulative exposure. -
University Microfilms, a Xeroxcompany, Ann Arbor
71.,..12,222 GOJRATI, Hassan Ali Navvab, 1935 EPIZOOTIOLOGICAL SURVEY Of AVIAN I:iALARIA IN THE HAWAIIAN ISLANDS. ' University of Hawaii, Ph.D., 1970 Entomol,ogy University Microfilms, A XEROX Company, Ann Arbor, Michigan THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED EPIZOOTIOLOGICAL SURVEY OF AVIAN MALARIA IN THE HAWAIIAN ISLANDS A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAII IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN ENTOMOLOGY SEPTEMBER 1970 Hassan Ali Navvab Gojrati Dissertation Committee D. Elmo Hardy, Chairman Andrew J. Berger Mercedes D. Delfinado Wallace C. Mitchell Minoru Tamashiro ACh~OWLEDGMENT8 I would like to express my sincere appreciation to many individuals and organizations for their assistance and cooperation in various aspects of this study. Mr Jack Throp, Director of the Honolulu Zoo for allowing complete freedom in trapping and examination of birds at the zoo. Dr. Joseph E. Alicata of the University of Hawaii for examination of some of the smears; Dr. Allen Y. Miyahara of the University of Hawaii for very essential technical assistance; Miss Elaine M. L. Chang, technician of the Board of Agriculture; Mr. James K. Ikeda of the State Department of Health for prOViding information on mosquito rearing; Mr. Winston Banko of Hawaii National Park for great assistance in mist-netting the birds at higher elevations; Mr. John L. Sincock of the U. S. Fish and Wildlife Service, Koloa, Kauai, for providing large numbers of slides from birds trapped at high-elevations on Kauai in addition to slides from Nihoa Finch, Nihoa Millerbird, Laysan Finch, Laysan Duck, etc.