Dolichodorus Aestuarius N. Sp. (Nematode: Dolichodoridae) 1
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Description and Identification of Four Species of Plant-Parasitic Nematodes Associated with Forage Legumes
5 Egypt. J. Agronematol., Vol. 17, No.1, PP. 51-64 (2018) Description and Identification of Four Species of Plant-parasitic Nematodes Associated with Forage Legumes * * Mahfouz M. M. Abd-Elgawad ; Mohamed F.M. Eissa ; Abd-Elmoneim Y. ** *** **** El-Gindi ; Grover C. Smart ; and Ahmed El-bahrawy . * Plant Pathology Department, National Research Centre. ** Department of Agricultural Zoology and Nematology, Faculty of Agriculture, University of Cairo, Giza, Egypt. *** Department of Entomology and Nematology, IFAS, University of Florida, USA. **** Institute for Sustainable Plant Protection, National Council of Research, Bari, Italy. Abstract Four species of plant parasitic nematodes were present in soil samples planted with forage legumes at Alachua County, Florida, USA. The detected species Belonolaimus longicaudatus, Criconemella ornate, Hoplolaimus galeatus, and Paratrichodorus minor were described in the present study. They belong to orders Rhabditida (Belonolaimus longicaudatus, Criconemella ornate, and Hoplolaimus galeatus) and Triplonchida (Paratrichodorus minor) and to taxonomical families Dolichodoridae (Belonolaimus longicaudatus), Hoplolaimidae (Hoplolaimus galeatus) Criconematidae (Criconemella ornate), and Trichodoridae (Paratrichodorus minor). The identification of the present specimens was based on the classical taxonomy, following morphological and morphometrical characters in the species specific identification keys. Keywords: Belonolaimus longicaudatus, Criconemella ornate, Hoplolaimus galeatus, Paratrichodorus minor, morphology, -
Dolichodorus Heterocephalus Cobb, 1914
CA LIF ORNIA D EPA RTM EN T OF FOOD & AGRICULTURE California Pest Rating Proposal for Dolichodorus heterocephalus Cobb, 1914 Cobb’s awl nematode Current Pest Rating: A Proposed Pest Rating: A Domain: Eukaryota, Kingdom: Metazoa, Phylum: Nematoda, Class: Secernentea Order: Tylenchida, Suborder: Tylenchina, Family: Dolichodoridae Comment Period: 08/10/2021 through 09/24/2021 Initiating Event: This nematode has not been through the pest rating process. The risk to California from Dolichodorus heterocephalus is described herein and a permanent pest rating is proposed. History & Status: Background: The genus Dolichodorus was created by Cobb (1914) when he named D. heterocephalus collected from fresh water at Silver Springs, Florida and Douglas Lake, Michigan. This nematode is a migratory ectoparasite that feeds only from the outside on the cells, on the root surfaces, and mainly at root tip. They live freely in the soil and feed on plants without becoming attached or entering inside the roots. Males and females are both present. This genus is notable in that its members are relatively large for plant parasites and have long stylets. Usually, awl nematodes are found in moist to wet soil, low areas of fields, and near irrigation ditches and other bodies of fresh water. Because they prefer moist to wet soils, they rarely occur in agricultural fields and are not as well studied as other plant-parasitic nematodes (Crow and Brammer, 2003). Infestations in Florida may be due to soil containing nematodes being spread from riverbanks CA LIF ORNIA D EPA RTM EN T OF FOOD & AGRICULTURE onto fields, or by moving with water during flooding (Christie, 1959). -
Morphological, Molecular and Phylogenetic Study of Filenchus
Alvani et al., J Plant Pathol Microbiol 2015, S:3 Plant Pathology & Microbiology http://dx.doi.org/10.4172/2157-7471.S3-001 Research Article Open Access Morphological, Molecular and Phylogenetic Study of Filenchus aquilonius as a New Species for Iranian Nematofauna and Some Other Known Nematodes from Iran Based on D2D3 Segments of 28 srRNA Gene Somaye Alvani1, Esmat Mahdikhani Moghaddam1*, Hamid Rouhani1 and Abbas Mohammadi2 1Department of Plant Pathology, Ferdowsi University of Mashhad, Mashhad, Iran 2Department of Plant Pathology, University of Birjand, Birjand, Iran Abstract Ziziphus zizyphus is very important crop in Iran. Because there isn’t any research of plant parasitic nematodes on Z. zizyphus, authors were encouraged to work on it. Nematodes isolated from the soil samples by whitehead method (1965) and permanent slides were prepared. Among the species Filenchus aquilonius is redescribed for the first time from Southern Khorasan province.F. aquilonius is characterized by lip region rounded, not offset, with fine annuls; four incisures in lateral line; Stylet moderately developed, 10-11.8 µm long with rounded knobs; Hemizonid immediately in front of excretory pore; Deirids at the level of excretory pore; Spermatheca an axial chamber and offset pouch; Tail about 120-157 µm, tapering gradually to a pointed terminus. For molecular identification the large subunit expansion segments of D2/D3 were performed for F. aquilonius to examine the phylogenetic relationships with other Tylenchids. DNA sequence data revealed that F. aquilonius had closet phylogenetic affinity withIrantylenchus vicinus as a sister group and with other Filenchus species for this region and placed them in one clade with 100% for bootstap value support. -
Theory Manual Course No. Pl. Path
NAVSARI AGRICULTURAL UNIVERSITY Theory Manual INTRODUCTORY PLANT NEMATOLOGY Course No. Pl. Path 2.2 (V Dean’s) nd 2 Semester B.Sc. (Hons.) Agri. PROF.R.R.PATEL, ASSISTANT PROFESSOR Dr.D.M.PATHAK, ASSOCIATE PROFESSOR Dr.R.R.WAGHUNDE, ASSISTANT PROFESSOR DEPARTMENT OF PLANT PATHOLOGY COLLEGE OF AGRICULTURE NAVSARI AGRICULTURAL UNIVERSITY BHARUCH 392012 1 GENERAL INTRODUCTION What are the nematodes? Nematodes are belongs to animal kingdom, they are triploblastic, unsegmented, bilateral symmetrical, pseudocoelomateandhaving well developed reproductive, nervous, excretoryand digestive system where as the circulatory and respiratory systems are absent but govern by the pseudocoelomic fluid. Plant Nematology: Nematology is a science deals with the study of morphology, taxonomy, classification, biology, symptomatology and management of {plant pathogenic} nematode (PPN). The word nematode is made up of two Greek words, Nema means thread like and eidos means form. The words Nematodes is derived from Greek words ‘Nema+oides’ meaning „Thread + form‟(thread like organism ) therefore, they also called threadworms. They are also known as roundworms because nematode body tubular is shape. The movement (serpentine) of nematodes like eel (marine fish), so also called them eelworm in U.K. and Nema in U.S.A. Roundworms by Zoologist Nematodes are a diverse group of organisms, which are found in many different environments. Approximately 50% of known nematode species are marine, 25% are free-living species found in soil or freshwater, 15% are parasites of animals, and 10% of known nematode species are parasites of plants (see figure at left). The study of nematodes has traditionally been viewed as three separate disciplines: (1) Helminthology dealing with the study of nematodes and other worms parasitic in vertebrates (mainly those of importance to human and veterinary medicine). -
2020.01.27.921304.Full.Pdf
bioRxiv preprint doi: https://doi.org/10.1101/2020.01.27.921304; this version posted January 28, 2020. 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 A novel metabarcoding strategy for studying nematode 2 communities 3 4 Md. Maniruzzaman Sikder1, 2, Mette Vestergård1, Rumakanta Sapkota3, Tina Kyndt4, 5 Mogens Nicolaisen1* 6 7 1Department of Agroecology, Aarhus University, Slagelse, Denmark 8 2Department of Botany, Jahangirnagar University, Savar, Dhaka, Bangladesh 9 3Department of Environmental Science, Aarhus University, Roskilde, Denmark 10 4Department of Biotechnology, Ghent University, Ghent, Belgium 11 12 13 *Corresponding author 14 Email: [email protected] 15 16 Abstract 17 Nematodes are widely abundant soil metazoa and often referred to as indicators of soil health. 18 While recent advances in next-generation sequencing technologies have accelerated 19 research in microbial ecology, the ecology of nematodes remains poorly elucidated, partly due 20 to the lack of reliable and validated sequencing strategies. Objectives of the present study 21 were (i) to compare commonly used primer sets and to identify the most suitable primer set 22 for metabarcoding of nematodes; (ii) to establish and validate a high-throughput sequencing 23 strategy for nematodes using Illumina paired-end sequencing. In this study, we tested four 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.01.27.921304; this version posted January 28, 2020. 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. -
Note 20: List of Plant-Parasitic Nematodes Found in North Carolina
nema note 20 NCDA&CS AGRONOMIC DIVISION NEMATODE ASSAY SECTION PHYSICAL ADDRESS 4300 REEDY CREEK ROAD List of Plant-Parasitic Nematodes Recorded in RALEIGH NC 27607-6465 North Carolina MAILING ADDRESS 1040 MAIL SERVICE CENTER Weimin Ye RALEIGH NC 27699-1040 PHONE: 919-733-2655 FAX: 919-733-2837 North Carolina's agricultural industry, including food, fiber, ornamentals and forestry, contributes $84 billion to the state's annual economy, accounts for more than 17 percent of the state's DR. WEIMIN YE NEMATOLOGIST income, and employs 17 percent of the work force. North Carolina is one of the most diversified agricultural states in the nation. DR. COLLEEN HUDAK-WISE Approximately, 50,000 farmers grow over 80 different commodities in DIVISION DIRECTOR North Carolina utilizing 8.2 million of the state's 12.5 million hectares to furnish consumers a dependable and affordable supply STEVE TROXLER of food and fiber. North Carolina produces more tobacco and sweet AGRICULTURE COMMISSIONER potatoes than any other state, ranks second in Christmas tree and third in tomato production. The state ranks nineth nationally in farm cash receipts of over $10.8 billion (NCDA&CS Agricultural Statistics, 2017). Plant-parasitic nematodes are recognized as one of the greatest threat to crops throughout the world. Nematodes alone or in combination with other soil microorganisms have been found to attack almost every part of the plant including roots, stems, leaves, fruits and seeds. Crop damage caused worldwide by plant nematodes has been estimated at $US80 billion per year (Nicol et al., 2011). All crops are damaged by at least one species of nematode. -
Plant-Parasitic Nematodes in Iowa
Journal of the Iowa Academy of Science: JIAS Volume 96 Number Article 8 1989 Plant-parasitic Nematodes in Iowa Don C. Norton Iowa State University Let us know how access to this document benefits ouy Copyright © Copyright 1989 by the Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/jias Part of the Anthropology Commons, Life Sciences Commons, Physical Sciences and Mathematics Commons, and the Science and Mathematics Education Commons Recommended Citation Norton, Don C. (1989) "Plant-parasitic Nematodes in Iowa," Journal of the Iowa Academy of Science: JIAS, 96(1), 24-32. Available at: https://scholarworks.uni.edu/jias/vol96/iss1/8 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Journal of the Iowa Academy of Science: JIAS by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Jour. Iowa Acad. Sci. 96(1):24-32, 1989 Plant-parasitic Nematodes in Iowa1 DON C. NORTON Department of Plant Pathology, Iowa State University, Ames, IA 50011 Ninety-nine species of plant-parasitic nematodes are recorded from Iowa. Twenty-seven are new scare records. Mose samples were collected from around maize or from prairies or woodlands. Similarity (Sorensen's index) of species was highest for rhe maize-prairie habitats (0.49), compared with maize-woodlands (0. 23), or prairie-woodland (0. 3 7) habirars. Nematode communities were most diverse in prairies with a Shannon-Weiner index (H') of 2.74, compared wirh I.65 and 1.07 for woodlands and maize habitats, respectively. -
Morphological Comparison and Taxonomic Utility of Copulatory Structures of Selected Nematode Species 1
Journal of Nematology 19(3):314-323. 1987. © The Society of Nematologists 1987. Morphological Comparison and Taxonomic Utility of Copulatory Structures of Selected Nematode Species 1 ABDALLAH RAMMAH ~ AND HEDWIG HIRSCHMANN 3 Abstract: Spicules of 9 Meloidoffyne, 2 Heterodera, 3 Globodera, and 12 other plant-parasitic, insect- parasitic, and free-living nematodes were excised and examined using scanning electron microscopy (SEM). Gubernacula of some of the species were also excised, and their structure was determined. The two spicules of all species examined were symmetrically identical in morphology. The spicule typically consisted of three parts: head, shaft, and blade with dorsal and ventral vela. The spicular nerve entered through the cytoplasmic core opening on the lateral outer surface of the spicule head and generally communicated with the exterior through one or two pores at the spicule tip. Spicules ofXiphinema sp. and Aporcelaimellus sp. were not composed of three typical parts, were less sclerotized, and lacked a cytoplasmic core opening and distal pores. Spicules of Aphelenchoides spp. had heads expanded into apex and rostrum and had very arcuate blades with thick dorsal and ventral edges (limbs). Gubernaculum shapes were stable within a species, but differed among species examined. The accessory structures of Hoplolaimus galeatus consisted of a tongue-shaped gubernaculum with two titillae at its distal end and a plate-like capitulum terminating distally in two flat, wing-like structures. A comparison of spicules of several species of Meloidogyne by SEM and light microscopy revealed no striking morphological differences. Key words: spicule, gubernaculum, capitulum, titillae, scanning electron microscopy, light mi- croscopy, Aphelenchoides, Aporcelaimel~us, Belonolaimus, Dolichodorus, Globodera, Heterorhabditis, Het- erodera, Hoplolaimus, Meloidogyne, Mesorhabditis, PanagreUus, Tylenchorhynchus, Xiphinema. -
Evaluation of Some Vulval Appendages in Nematode Taxonomy
Comp. Parasitol. 76(2), 2009, pp. 191–209 Evaluation of Some Vulval Appendages in Nematode Taxonomy 1,5 1 2 3 4 LYNN K. CARTA, ZAFAR A. HANDOO, ERIC P. HOBERG, ERIC F. ERBE, AND WILLIAM P. WERGIN 1 Nematology Laboratory, United States Department of Agriculture–Agricultural Research Service, Beltsville, Maryland 20705, U.S.A. (e-mail: [email protected], [email protected]) and 2 United States National Parasite Collection, and Animal Parasitic Diseases Laboratory, United States Department of Agriculture–Agricultural Research Service, Beltsville, Maryland 20705, U.S.A. (e-mail: [email protected]) ABSTRACT: A survey of the nature and phylogenetic distribution of nematode vulval appendages revealed 3 major classes based on composition, position, and orientation that included membranes, flaps, and epiptygmata. Minor classes included cuticular inflations, protruding vulvar appendages of extruded gonadal tissues, vulval ridges, and peri-vulval pits. Vulval membranes were found in Mermithida, Triplonchida, Chromadorida, Rhabditidae, Panagrolaimidae, Tylenchida, and Trichostrongylidae. Vulval flaps were found in Desmodoroidea, Mermithida, Oxyuroidea, Tylenchida, Rhabditida, and Trichostrongyloidea. Epiptygmata were present within Aphelenchida, Tylenchida, Rhabditida, including the diverged Steinernematidae, and Enoplida. Within the Rhabditida, vulval ridges occurred in Cervidellus, peri-vulval pits in Strongyloides, cuticular inflations in Trichostrongylidae, and vulval cuticular sacs in Myolaimus and Deleyia. Vulval membranes have been confused with persistent copulatory sacs deposited by males, and some putative appendages may be artifactual. Vulval appendages occurred almost exclusively in commensal or parasitic nematode taxa. Appendages were discussed based on their relative taxonomic reliability, ecological associations, and distribution in the context of recent 18S ribosomal DNA molecular phylogenetic trees for the nematodes. -
Nematology Training Manual
NIESA Training Manual NEMATOLOGY TRAINING MANUAL FUNDED BY NIESA and UNIVERSITY OF NAIROBI, CROP PROTECTION DEPARTMENT CONTRIBUTORS: J. Kimenju, Z. Sibanda, H. Talwana and W. Wanjohi 1 NIESA Training Manual CHAPTER 1 TECHNIQUES FOR NEMATODE DIAGNOSIS AND HANDLING Herbert A. L. Talwana Department of Crop Science, Makerere University P. O. Box 7062, Kampala Uganda Section Objectives Going through this section will enrich you with skill to be able to: diagnose nematode problems in the field considering all aspects involved in sampling, extraction and counting of nematodes from soil and plant parts, make permanent mounts, set up and maintain nematode cultures, design experimental set-ups for tests with nematodes Section Content sampling and quantification of nematodes extraction methods for plant-parasitic nematodes, free-living nematodes from soil and plant parts mounting of nematodes, drawing and measuring of nematodes, preparation of nematode inoculum and culturing nematodes, set-up of tests for research with plant-parasitic nematodes, A. Nematode sampling Unlike some pests and diseases, nematodes cannot be monitored by observation in the field. Nematodes must be extracted for microscopic examination in the laboratory. Nematodes can be collected by sampling soil and plant materials. There is no problem in finding nematodes, but getting the species and numbers you want may be trickier. In general, natural and undisturbed habitats will yield greater diversity and more slow-growing nematode species, while temporary and/or disturbed habitats will yield fewer and fast- multiplying species. Sampling considerations Getting nematodes in a sample that truly represent the underlying population at a given time requires due attention to sample size and depth, time and pattern of sampling, and handling and storage of samples. -
Use of an Anthranilic Diamide Derivatives with Heteroaromatic and Heterocyclic Substituents in Combination with a Biological Control Agent
(19) TZZ Z¥ _T (11) EP 2 606 732 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 26.06.2013 Bulletin 2013/26 A01N 43/713 (2006.01) A01N 63/00 (2006.01) A01N 63/02 (2006.01) A01N 63/04 (2006.01) (2009.01) (2009.01) (21) Application number: 11194336.1 A01N 65/00 A01N 65/22 A01N 31/08 (2006.01) A01P 7/04 (2006.01) (22) Date of filing: 19.12.2011 (84) Designated Contracting States: (71) Applicant: Bayer CropScience AG AL AT BE BG CH CY CZ DE DK EE ES FI FR GB 40789 Monheim (DE) GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (72) Inventor: The designation of the inventor has not Designated Extension States: yet been filed BA ME (54) Use of an anthranilic diamide derivatives with heteroaromatic and heterocyclic substituents in combination with a biological control agent (57) A composition comprising a compound of for- in which R1, R2, R3, R4, R5, R6, A, Q and n can have the mula (I): definitions stated in the description, and at least one bi- ological control agent selected from bacteria, fungi or yeasts, protozoas, viruses, entomopathogenic nema- todes, and botanical extracts, or products produced by microorganisms including proteins or secondary metabolites" and optionally an inoculant, for reducing overall damage of plants and plant parts as well as losses in harvested fruits or vegetables caused by insects, nem- atodes and phytopathogens. EP 2 606 732 A1 Printed by Jouve, 75001 PARIS (FR) EP 2 606 732 A1 Description [0001] The present invention relates to the use of anthranilic diamide derivatives with heteroaromatic and heterocyclic substituents in combination with a biological control agent as well as to a preparation method of compositions containing 5 anthranilic diamide derivatives and a selected biological control agent, and compositions containing anthranilic diamide derivatives and at least one biological control agent. -
Taxonomy and Morphology of Plant-Parasitic Nematodes Associated with Turfgrasses in North and South Carolina, USA
Zootaxa 3452: 1–46 (2012) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2012 · Magnolia Press Article ISSN 1175-5334 (online edition) urn:lsid:zoobank.org:pub:14DEF8CA-ABBA-456D-89FD-68064ABB636A Taxonomy and morphology of plant-parasitic nematodes associated with turfgrasses in North and South Carolina, USA YONGSAN ZENG1, 5, WEIMIN YE2*, LANE TREDWAY1, SAMUEL MARTIN3 & MATT MARTIN4 1 Department of Plant Pathology, North Carolina State University, Raleigh, NC 27695-7613, USA. E-mail: [email protected], [email protected] 2 Nematode Assay Section, Agronomic Division, North Carolina Department of Agriculture & Consumer Services, Raleigh, NC 27607, USA. E-mail: [email protected] 3 Plant Pathology and Physiology, School of Agricultural, Forest and Environmental Sciences, Clemson University, 2200 Pocket Road, Florence, SC 29506, USA. E-mail: [email protected] 4 Crop Science Department, North Carolina State University, 3800 Castle Hayne Road, Castle Hayne, NC 28429-6519, USA. E-mail: [email protected] 5 Department of Plant Protection, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, People’s Republic of China *Corresponding author Abstract Twenty-nine species of plant-parasitic nematodes were recovered from 282 soil samples collected from turfgrasses in 19 counties in North Carolina (NC) and 20 counties in South Carolina (SC) during 2011 and from previous collections. These nematodes belong to 22 genera in 15 families, including Belonolaimus longicaudatus, Dolichodorus heterocephalus, Filenchus cylindricus, Helicotylenchus dihystera, Scutellonema brachyurum, Hoplolaimus galeatus, Mesocriconema xenoplax, M. curvatum, M. sphaerocephala, Ogma floridense, Paratrichodorus minor, P. allius, Tylenchorhynchus claytoni, Pratylenchus penetrans, Meloidogyne graminis, M. naasi, Heterodera sp., Cactodera sp., Hemicycliophora conida, Loofia thienemanni, Hemicaloosia graminis, Hemicriconemoides wessoni, H.