DOCSLIB.ORG

Three New Species of Trichodoridae (Nematoda: Diphtherophorina) with Observations on the Vulva in Paratrichodorus R

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Three New Species of Trichodoridae (Nematoda: Diphtherophorina) with Observations on the Vulva in Paratrichodorus R 132 Journal o[ Nematology, Volume 10, No. 2, April 1978 material is a residue of secretions present chodoridae. Pages 103-127. in F. Lamberti, in the spicules. Because of no visible vas C. E. Taylor, and J. w. Seinhorst, eds. Nematode vectors of plant viruses. Plenum deferens, and because spicules appear hol- Press, London and New York. low with a terminal or ventro-terminal 6. RODRIGUEZ-M, R., and A. H. BELL. 1978. opening or pore, it is possible to speculate Three new species of Trichodoridae that sperms pass through the spicule body. (Nematoda: Diphtherophorina) with obser- vations on the vulva in Paratriehodorus LITERATURE CITED Siddiqi, 1973. J. Nematol. 10:132-141. 7. RODRIGUEZ-M, R., S. A. SHER, and M. R. 1. ALLEN, M. W. 1975. A review of the nematode SIDD1QI. 1978. Systematics of the monodel- genus Trichodorus with descriptions of ten phic species of Trichodoridae (Ncmatoda: new species. Nematologica 2:32-62. Diphtherophorina) with descriptions of a new 2. HOOPER, D. J. 1962. Three new species of genus and four new species. J. Nematol. 10: Trichodorus (Nematoda: Dorylaimoidea) and 141-152. observations on T. mi,nor Colbran, 1956. 8. SHER, S. A. and A. H. BELL. 1975. Scanning Nematologica 7:273-280. electron tnicrographs of the anterior region 3. HOOPER, D. J. 1975. Morphology of Tri- of some species of Tylenchoidea (Tylenchida: chodorid Nematodes. Pages 91-101. in Netnatoda). J. Nematol. 7:69-83. F. Lamherti, C. E. Taylor, and J. w. Sein- 9. SIDDIQI, M. R. 1973. Systematics of the horst, eds. Nematode vectors o1 plant viruses. genus Trichodorus Cobb, 1913: (Nematoda: Plenum Press, London and New York. Doylaimida) with descriptions of three new 4. LOOF, P. A. A. 1973. Taxonomy of Trichodorus species. Nematologica 19:259-278. aequalis-complex (Diphtherophorina). Nema- 10. SCZYGIEL, A. 1968. Trichodorus sparsus sp. n. tologica 19:49-61. (Nematoda: Trichodoridae). Bull. Ac. Pol. 5. LOOF, P. A. A. 1975. Taxonomy of Tri- Sci. 16:695-698. Three New Species of Trichodoridae (Nematoda: Diphtherophorina) with Observations on the Vulva in Paratrichodorus R. RODRIGUEZ-M. and A. H, BELL~ Abstract: Trichodorus intermedius n. sp., Trichodorus dilatatus n. sp., and Paratrichodorus (dtlantadorus) grandis n. sp. are described from soil around native plants of Southern California. The females of the three subgenera of Paratrichodorus are further characterized on the basis of the vulva, which is pore-like in Atlantadorus, a longitudinal slit in Paratrichodorus, and a transverse slit in Nanidorus. Key Words: Taxonomy, morphology, Trichodorus intermedius, Trichodorus dilatatus, Paratrichodorus (Atlantadorus) grandis, supplementary papillae. In 1913 Cobb described the genus Tri- taxonomic study of the genus (1). Siddiqi chodorus on the basis of T. obtusus collected discussed the systematics and morphology around roots of grasses at Arlington, Vir- of the genus, proposed the genus Paratri- ginia (3). Interest in the genus was increased chodorus, and erected subgenera (8). He by the discovery by Christie and Perry of also constructed a key to the species of the pathogenicity of a species of Tri- Trichodorus on the basis of male char- chodorus to beets and corn. This species acters. Because males are rare in some was later described as T. christei by Allen species and unknown in others, we under- in a review of the germs that for the first took a search for characters that would time clearly identified the morphological facilitate identification of individual fe- characters which could be used for species males. identification, laying a foundation for the During a study of trichodorids in the nematode collection at the University of California, Riverside, three new species Received for publication 8 June 1977. aDepartment of Nematology. University of California, River- associated with native plants of Southern side, CA 92521. Present Address (Senior Author): Colegio California were found and are described de Postgraduados, Escuela National de Agricultura, Cha- pingo, Mexico. herein. Additional species were included in Trichodoridae Taxonomy: Rodriguez-M., Bell 133 a study of variation of the morphology of arcuate, slightly cephalated, distal one-third the vulva. slightly expanded. Proximal two-thirds of retracted spicules appear serrated; when METHODS AND MATERIALS extended, bristle-like structures occur along proximal two-thirds of spicule. Guber- Specimens used in the description of naculum linear, 19 tzm, with ventral end new species were fixed in formalin, trans- expanded. Protractor muscles prominent. ferred to dilute glycerin, and allowed to Three ventromedian supplementary papil- dehydrate slowly. Processed specimens were lae, 72, 24, and I0 /zm from anus. Paired mounted on permanent slides either in subventral postcloacal papillae. Tail dehydrated glycerin or in glycerin jelly rounded, with slight thickening of cuticle (dorsal-ventral mounts). Type materials around almost terminal caudal pores. were used for all species. Measurements Allotype 9: L = 0.73 mm; a -- 18.0; were of permanent mounts by means of b = 4.9; V = 55; onchiostyle = 64 ~m. camera lucida and are expressed as the Body straight to slightly curved ventrally. mean ± 1 standard deviation followed by Cuticle, lip region, and esophagus as in the range. male. Excretory pore 110 (78.4-138 in paratypes) t~m from anterior end. Gonads Trichodorus intermedius n. sp. paired, reflexed. Spermatheca (present or absent in paratypes) filled with round Fig. 1 sperm. Vagina more than one-half vulvar- Measurements: Paratypes 11 ~ ~ : L = body-width in length, with cuticularization 0.83 -+- 0.07 (0.72-0.95) ram; a = 21.0 ± and musculature prominent. Vaginal 2.1 (18-24); b = 5.0 +__ 0.59 (3.9-5.9); c = cuticularization appearing as two triangles 68 -+- 10.2 (59-91); T -- 66.8 -+- 3.6 (63- with long bases in lateral view oblique to 72.8); onchiostyle = 69.0 ~ 2.5 (62-71.5) body axis, with tips characteristically bent ~m; spicules = 45.0 ± 3.0 (42-50) #m; toward interior of vagina (Fig. 4-D). Vulva gubernaculum = 20.0 -4- 1.3 (18-22) ttm. a large transverse slit. Paired lateral body Paratypes 23 9 9: L = 0.85 -+- 0.1 (0.68- pores about 20 tam posterior to vulva. Tail 1.13) ram; a -- 20.0 ± 1.1 (17.2-22); b = rounded, with terminal caudal pores. Anus 5.0 -+- 0.5 (4.3-6.4); anus subterminal; V = subterminal. 57.0 -+- 2.7 (53-64); onchiostyle -- 69.0 ± Holotype ~: Collected by A. Bell on 3.4 (62-75.2) ttm. April 22, 1967. Department of Nematology Holotype 5: L = 0.72 ram; a -- 20.0; Nematode Collection, University of Cali- b = 4.6; ¢ = 91; T = 63. Body straight fornia, Riverside. Catalog No. 28. anteriorly, strongly curved ventrad at pos- Allotype 9: Same data as holotype. terior end. Cuticle not abnormally swollen, Catalog No. 29. subcuticle finely striated. Lip region promi- Type locality and habitat: Soil around nent, somewhat conical. Sixteen papillae roots of live oak (Quercus virginiana Mill) arranged in an inner circle of 6 around oral at Oak Grove Campground, San Diego Co., aperture and an outer circle of 10 com- California. Additional specimens have been posed of 2 pairs of subdorsal papillae, 2 found associated with the following hosts pairs of subventral papillae, and 2 single in Southern California: grass and wil- lateral papillae (7). Amphid aperture near low (Salix sp.), Dripping Springs near level of outer circle of papillae. One Temecula; Chenopodium sp. and Ambrosia ventral cervical papilla anterior to ex- sp., Santa Ana River, Riverside; Pinus sp., cretory pore, 100 ~m from anterior end. Mt. Palomar; Salvia leucophyUa, south of Excretory pore 122 ttm from anterior end. Camarillo; Quercus sp., Fallbrook; Quercus Onchiostyle 62 tzm, tip 30 /~m. Collar or sp. and grass, Live Oak Park; also in red- "guide ring" 27 ~m from anterior end. wood soil at Big Sur. Nerve ring midway between onchiostyle T. intermedius was sometimes found base and ventral cervical papilla. Esophagus mixed with Paratrichodorus (P.) aUius, and esophageal gland nuclei position typ- Paratrichodorus (N.) minor, or Trichodorus ical of genus. Testis single, outstretched, aequalis. with large round sperm. Spicules 42 t~m, Paratypes: 15 ~ ~, 30 9 9, 20 jj, same 134 Journal of Nematolog),, Volume 10, No. 2, April 1978 ['~' , .: . .:. ~i Q .............~:. .... , • ~'. .>,~:~ ~ :.,,,~.. ~.@ @ ".~.~......':,.'.'..:~, • .~ ., • ~....!~..;::.~:.;~.. z;~ o i ; '-.. ~!~.-- .?.'; ~:-~. I .A" F 0.03 mm , FIG. I-(A-F). Trichodorus intermedius n. sp.: ,4) male anterior region (holotype); B) female posterior region (paratype); C) vagina and related structures in lateral view; D) vulva in ventral view; E) male posterior region (holotype); F) male spicule (paratype), Trichodoridae Taxonomy: Rodriguez-M., Bell 135 data as holotype, distributed as follows: disappear near esophagus. Onchiostyle 65 6 ~ ~, 15 9 9, 13 jj, Department of Nema- /~m, tip 30 /~m. Collar or "guide ring" 29 tology, University of California, Riverside; ixm from anterior end. Nerve ring 18 /~m 2 ~ ~, 3 9 2, Nematode Collection, Uni- posterior to onchiostyle base, midway be- versity of California, Davis; 2 ~ ~, 3 9 9, tween onchiostyle base and ventral cervical USDA Nematode Collection, Nematology papilla. Esophagus typical of genus; an- Investigations, Behsville, Maryland; 1 ~, terior subventral gland nuclei anterior to 2 2 2, Rothamsted Experimental Station, excretory pore; posterior subventral gland Harpenden, England; 2 ~ ~, 4 9 2, 7 j j, nuclei 20 /~m anterior to the esophago- Commonwealth Institute of Helminthology, intestinal junction; dorsal esophageal gland St. Albans, England; 2 ~ ~, 3 9 9, Nema- nucleus larger than nuclei of subventral tology Department, Landbouwhogeschool, glands, and located near same level as Wageningen, The Netherlands. posterior subventral gland nuclei. Gonad Diagnosis: By having males with only single, outstretched, containing large round one ventral cervical papilla, T. intermedius sperm. Spicules curved ventrally, expanded is similar to T. californicus Allen, 1957 (1) at proximal end, then uniformly tapered and T. cottieri Clark, 1963 (2), but differs to distal end.
Load more

Recommended publications
  • Plant-Parasitic Nematodes and Their Management: a Review
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by International Institute for Science, Technology and Education (IISTE): E-Journals Journal of Biology, Agriculture and Healthcare www.iiste.org ISSN 2224-3208 (Paper) ISSN 2225-093X (Online) Vol.8, No.1, 2018 Plant-Parasitic Nematodes and Their Management: A Review Misgana Mitiku Department of Plant Pathology, Southern Agricultural Research Institute, Jinka, Agricultural Research Center, Jinka, Ethiopia Abstract Nowhere will the need to sustainably increase agricultural productivity in line with increasing demand be more pertinent than in resource poor areas of the world, especially Africa, where populations are most rapidly expanding. Although a 35% population increase is projected by 2050. Significant improvements are consequently necessary in terms of resource use efficiency. In moving crop yields towards an efficiency frontier, optimal pest and disease management will be essential, especially as the proportional production of some commodities steadily shifts. With this in mind, it is essential that the full spectrums of crop production limitations are considered appropriately, including the often overlooked nematode constraints about half of all nematode species are marine nematodes, 25% are free-living, soil inhabiting nematodes, I5% are animal and human parasites and l0% are plant parasites. Today, even with modern technology, 5-l0% of crop production is lost due to nematodes in developed countries. So, the aim of this work was to review some agricultural nematodes genera, species they contain and their management methods. In this review work the species, feeding habit, morphology, host and symptoms they show on the effected plant and management of eleven nematode genera was reviewed.
    [Show full text]
  • Summary Paratrichodorus Minor Is a Highly Polyphagous Plant Pest, Generally Found in Tropical Or Subtropical Soils
    CSL Pest Risk Analysis for Paratrichodorus minor copyright CSL, 2008 CSL PEST RISK ANALYSIS FOR Paratrichodorus minor Abstract/ Summary Paratrichodorus minor is a highly polyphagous plant pest, generally found in tropical or subtropical soils. It has entered the UK in growing media associated with palm trees and is most likely to establish on ornamental plants grown under protection. There is a moderate likelihood of the pest establishing outdoors in the UK through the planting of imported plants in gardens or amenity areas. However there is a low likelihood of the nematode spreading from such areas to commercial food crops, to which it presents a small risk of economic impact. P. minor is known to vector the Tobacco rattle virus (TRV), which affects potatoes, possibly strains that are not already present in the UK, but the risk of the nematode entering in association with seed potatoes is low. Overall the risk of P. minor to the UK is rated as low. STAGE 1: PRA INITIATION 1. What is the name of the pest? Paratrichodorus minor (Colbran, 1956) Siddiqi, 1974 Nematode: Trichodoridae Synonyms: Paratrichodorus christiei (Allen, 1957) Siddiqi, 1974 Paratrichodorus (Nanidorus) christiei (Allen, 1957) Siddiqi, 1974 Paratrichodorus (Nanidorus) minor (Colbran, 1956) Siddiqi, 1974 Trichodorus minor Colbran, 1956 Trichodorus christiei Allen, 1957 Nanidorus minor (Colbran, 1956) Siddiqi, 1974 Nanidorus christiei (Allen, 1957) Siddiqi, 1974 Trichodorus obesus Razjivin & Penton, 1975 Paratrichodorus obesus (Razjivin & Penton, 1975) Rodriguez-M. & Bell, 1978. Paratrichodorus (Nanidorus) obesus (Razjivin & Penton, 1975) Rodriguez-M. & Bell, 1978. Common names: English: a stubby-root nematode. References: Decraemer, 1995 In Europe there has been some confusion between P.
    [Show full text]
  • First Report of Stubby Root Nematode, Paratrichodorus Teres (Nematoda: Trichodoridae) from Iran
    Australasian Plant Dis. Notes (2014) 9:131 DOI 10.1007/s13314-014-0131-4 First report of stubby root nematode, Paratrichodorus teres (Nematoda: Trichodoridae) from Iran R. Heydari & Z. Tanha Maafi & F. Omati & W. Decraemer Received: 8 October 2013 /Accepted: 20 March 2014 /Published online: 4 April 2014 # Australasian Plant Pathology Society Inc. 2014 Abstract During a survey of plant-parasitic nematodes in fruit Trichodorus, Nanidorus and Paratrichodorus are natural tree nurseries in Iran, a species of the genus Paratrichodorus vectors of the plant Tobraviruses occurring worldwide from the family Trichodoridae was found in the rhizosphere of (Taylor and Brown 1997; Decraemer and Geraert 2006). apricot seedlings in Shahrood, central Iran, then subsequently in Eight species of the Trichodoridae family have so far been Karaj orchards. Morphological and morphometric characters of reported from Iran: Trichodorus orientalis (De Waele and the specimens were in agreement with P. teres.TheD2/D3 Hashim 1983), T. persicus (De Waele and Sturhan 1987), expansion fragment of the large subunit (LSU) of rRNA gene T. gilanensis, T. primitivus, Paratrichodorus porosus, P. of the nematode was also sequenced. P. teres is considered an tunisiensis (Maafi and Decraemer 2002), T. arasbaranensis economically important species in agricultural crop, worldwide. (Zahedi et al. 2009)andP. mi no r (now Nanidorus minor) This is the first report of the occurrence of P. teres in Iran. (Pourjam et al. 2011). Several species were detected in a survey conducted on Keywords Apricot . Fruit tree nursery . Iran . plant-parasitic nematodes in fruit tree nurseries. Among Paratrichodorus teres them, a nematode population belonging to Trichodoridae was observed in the rhizosphere of apricot seedlings in Shahroood, Semnan province, central Iran, that was sub- Trichodorid nematodes are root ectoparasites, usually sequently identified as P.
    [Show full text]
  • 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.
    [Show full text]
  • Transcriptome Profiling of the Root-Knot Nematode Meloidogyne Enterolobii During Parasitism and Identification of Novel Effector Proteins
    Ecole Doctorale de Sciences de la Vie et de la Santé Unité de recherche : UMR ISA INRA 1355-UNS-CNRS 7254 Thèse de doctorat Présentée en vue de l’obtention du grade de docteur en Biologie Moléculaire et Cellulaire de L’UNIVERSITE COTE D’AZUR par NGUYEN Chinh Nghia Etude de la régulation du transcriptome de nématodes parasites de plante, les nématodes à galles du genre Meloidogyne Dirigée par Dr. Bruno FAVERY Soutenance le 8 Décembre, 2016 Devant le jury composé de : Pr. Pierre FRENDO Professeur, INRA UNS CNRS Sophia-Antipolis Président Dr. Marc-Henri LEBRUN Directeur de Recherche, INRA AgroParis Tech Grignon Rapporteur Dr. Nemo PEETERS Directeur de Recherche, CNRS-INRA Castanet Tolosan Rapporteur Dr. Stéphane JOUANNIC Chargé de Recherche, IRD Montpellier Examinateur Dr. Bruno FAVERY Directeur de Recherche, UNS CNRS Sophia-Antipolis Directeur de thèse Doctoral School of Life and Health Sciences Research Unity: UMR ISA INRA 1355-UNS-CNRS 7254 PhD thesis Presented and defensed to obtain Doctor degree in Molecular and Cellular Biology from COTE D’AZUR UNIVERITY by NGUYEN Chinh Nghia Comprehensive Transcriptome Profiling of Root-knot Nematodes during Plant Infection and Characterisation of Species Specific Trait PhD directed by Dr Bruno FAVERY Defense on December 8th 2016 Jury composition : Pr. Pierre FRENDO Professeur, INRA UNS CNRS Sophia-Antipolis President Dr. Marc-Henri LEBRUN Directeur de Recherche, INRA AgroParis Tech Grignon Reporter Dr. Nemo PEETERS Directeur de Recherche, CNRS-INRA Castanet Tolosan Reporter Dr. Stéphane JOUANNIC Chargé de Recherche, IRD Montpellier Examinator Dr. Bruno FAVERY Directeur de Recherche, UNS CNRS Sophia-Antipolis PhD Director Résumé Les nématodes à galles du genre Meloidogyne spp.
    [Show full text]
  • Stubby-Root Nematode, Trichodorus Obtusus Cobb (Nematoda: Adenophorea: Triplonchida: Diphtherophorina: Trichodoridea: Trichodoridae)1
    Archival copy: for current recommendations see http://edis.ifas.ufl.edu or your local extension office. EENY-340 Stubby-Root Nematode, Trichodorus obtusus Cobb (Nematoda: Adenophorea: Triplonchida: Diphtherophorina: Trichodoridea: Trichodoridae)1 W. T. Crow2 Introduction Life Cycle and Biology Nematodes in the family Trichodoridae (Thorne, While large for a plant-parasitic nematode (about 1935) Siddiqi, 1961, are commonly called 1/16 inch long), T. obtusus is still small enough that it "stubby-root" nematodes, because feeding by these can be seen only with the aid of a microscope. nematodes can cause a stunted or "stubby" appearing Stubby-root nematodes are ectoparasitic nematodes, root system. Trichodorus obtusus is one of the most meaning that they feed on plants while their bodies damaging nematodes on turfgrasses, but also may remain in the soil. They feed primarily on meristem cause damage to other crops. cells of root tips. Stubby-root nematodes are plant-parasitic nematodes in the Triplonchida, an Synonymy order characterized by having a six-layer cuticle (body covering). Stubby- root nematodes are unique Trichodorus proximus among plant-parasitic nematodes because they have Distribution an onchiostyle, a curved, solid stylet or spear they use in feeding. All other plant-parasitic nematodes have Trichodorus obtusus is only known to occur in straight, hollow stylets. Stubby-root nematodes use the United States. A report of T. proximus (a synonym their onchiostyle like a dagger to puncture holes in of T. obtusus) from Ivory Coast was later determined plant cells. The stubby root nematode then secretes to be a different species. Trichodorus obtusus is from its mouth (stoma) salivary material into the reported in the states of Virginia, Florida, Iowa, punctured cell.
    [Show full text]
  • Proceedings of the 3Rd GBIF Science Symposium Brussels, 18-19 April 2005
    Proceedings of the 3rd GBIF Science Symposium Brussels, 18-19 April 2005 Tropical Biodiversity: Science, Data, Conservation Edited by H. Segers, P. Desmet & E. Baus Proceedings of the 3rd GBIF Science Symposium Brussels, 18-19 April 2005 Tropical Biodiversity: Science, Data, Conservation Edited by H. Segers, P. Desmet & E. Baus Recommended form of citation Segers, H., P. Desmet & E. Baus, 2006. ‘Tropical Biodiversity: Science, Data, Conservation’. Proceedings of the 3rd GBIF Science Symposium, Brussels, 18-19 April 2005. Organisation - Belgian Biodiversity Platform - Belgian Science Policy In cooperation with: - Belgian Clearing House Mechanism of the CBD - Royal Belgian Institute of Natural Sciences - Global Biodiversity Information Facility Conference sponsors - Belgian Science Policy 1 Table of contents Research, collections and capacity building on tropical biological diversity at the Royal Belgian Institute of Natural Sciences .........................................................................................5 Van Goethem, J.L. Research, Collection Management, Training and Information Dissemination on Biodiversity at the Royal Museum for Central Africa .......................................................................................26 Gryseels, G. The collections of the National Botanic Garden of Belgium ....................................................30 Rammeloo, J., D. Diagre, D. Aplin & R. Fabri The World Federation for Culture Collections’ role in managing tropical diversity..................44 Smith, D. Conserving
    [Show full text]
  • Nematode Management in Cole Crops1 Z
    ENY-024 Nematode Management in Cole Crops1 Z. J. Grabau and J. W. Noling2 Plant-parasitic nematodes are small microscopic round- Plant-Parasitic Nematodes worms that live in the soil and attack the roots of plants. Plant-parasitic nematodes are microscopic roundworms Crop production problems induced by nematodes therefore that feed on plant tissue. Most plant-parasitic nematodes generally occur as a result of root dysfunction; nematodes live in the soil and attack the roots of plants. This can reduce rooting volume and the efficiency with which roots reduce yield by reducing root function and consequently forage for and use water and nutrients. Many different plant growth. Cole crops are selected plants in the family genera and species of nematodes can be important to crop Brassicaceae whose leaves or shoots are harvested. They production in Florida. In many cases a mixed community include cabbage, broccoli, Brussels sprouts, cauliflower, of plant-parasitic nematodes is present in a field, rather collards, and others. Many different genera and species of than having a single species occurring alone. Root-knot, nematodes cause damage in Florida cole crop production sting, stubby-root, and awl nematodes are important pests (Rhoades 1986; McSorley and Dickson 1995; Perez et of crucifers; a cyst nematode is serious in local areas of al. 2000b). In many cases, a mixed community of plant- central Florida. Radishes are occasionally deformed slightly parasitic nematodes is present in a field, rather than a single by root-knot nematodes, but they normally escape serious species. The most important nematode pests of cole crops injury because of their short growth period (less than a in Florida are species of root-knot nematodes (Meloidogyne complete nematode life cycle).
    [Show full text]
  • Trichodoridae from Southern Spain, with Description of Trichodorus Giennensis Ll
    Fundam. appl. Nematol., 1993,16 (5),407-416 Trichodoridae from southern Spain, with description of Trichodorus giennensis ll. sp. (Nemata: Trichodoridae) Wilfrida DECRAEMER *, Francesco ROCA **, Pablo CASTILLO ***, Reyes PENA-SANTIAGO **** and Antonio GOMEZ-BARCINA ***** * Koninklijk Belgisch fnstituut voor Natuurwetenschappen, Department of fnverte!Jrates, Vautierstraat 29, 1040 Brussels, Belgium, ** 1stituto di Nematologia Agraria, CNR, trav. 174 di via Amendola 168/5 Bari, Italy, *** Instituto de Agricultura Sostenible, CSfC, Apartado 4084, 14080 Cordoba, Spain, **** Escuela Universitaria de Formacion deI Profesorado de E. C.B., Virgen de la Cabeza, 2, 23008Jaén, spain, and ***** Centro de Investigacion y DesaTTollo Agrario, Apartado 2027, 18080 Granada, spain. Accepted for publication 22 December 1992. Summ.ary - During a survey of Trichodoridae in the province Jaén, south-eastern Spain, a new Trichodorus species, Trichodorus giennensis sp. n. was found. This species is characterized by two ventromedian cervical papillae, the shape of the spicules with widened manubrium and slender calomus with at mid-leve1 a slight constriction provided with bristles in males, and by a barre1-shaped vagina, sma1l triangular oblique vaginal sc1erotized pieces and a single pair of postadvulvar lateral body pores in female. T. giennensis sp. n. c1ose1y resembles the "Trichodorus aequalis "species group, and more specifica1ly T. sparsus Szczygie1, 1968. The occurrence of Trichodorus viruliferus Hooper, 1963 and Paralrichodorus !eTes (Hooper, 1962) represem new records for Spain. Additional morphometric and morphological data are given for P. hispanus Roca & Arias, 1986 and P. teres. Résumé - Trichodoridae du sud de ['Espagne et description de Trichodorus giennensis n. sp. (Nernata: Diph­ therophorina). - Au cours de récoltes de Trichodoridae dans la province de Jaén, au sud-est de l'Espagne, une nouvelle espèce du genre Trichodorus a été trouvée, décrite ici sous le nom de Trichodorus giennensis n.
    [Show full text]
  • Paratrichodorus Divergens Sp. N., a New Potential Virus Vector of 3 Tobacco Rattle Virus and Additional Observations on P
    1 2 Paratrichodorus divergens sp. n., a new potential virus vector of 3 tobacco rattle virus and additional observations on P. hispanus Roca & 4 Arias, 1986 from Portugal (Nematoda: Trichodoridae) 5 Maria Teresa Martins de ALMEIDA1,*, Maria Susana Newton de Almeida SANTOS2, 6 Isabel Maria de Oliveira ABRANTES2 and Wilfrida DECRAEMER3,4 7 8 1Departamento de Biologia, Universidade do Minho, Gualtar, 4710-057 Braga, 9 Portugal 10 2Instituto do Ambiente e Vida, Departamento de Zoologia, Universidade de Coimbra, 11 3004-517 Coimbra, Portugal 12 3Koninklijk Belgisch Institut voor Natuurwetenschappen, Vautierstraat 29, 1000 13 Brussels, Belgium, 14 4University of Gent, Department of Biology, Ledeganckstraat 35, 9000 Gent, Belgium 15 16 17 18 19 20 21 22 23 24 *Corresponding author, e-mail: [email protected] 1 1 Summary - During a survey of trichodorids in Continental Portugal, a new trichodorid 2 species, Paratrichodorus divergens sp. n., was found. It is described and illustrated with 3 specimens from the type locality and additional morphometric data and photographs of 4 specimens obtained from soil samples collected in seven other localities are also 5 included. The species is characterised in female by distinct drop-like to triangular 6 oblique vaginal sclerotisations diverging outwards, sperm cells usually distributed all 7 through the uteri, and in male by thin, almost straight, striated spicules, the two 8 posteriormost pre-cloacal supplements relatively close to one another and usually 9 opposite the distal third of retracted spicules, a slightly bilobed cloacal lip and sperm 10 cells with sausage-shaped nucleus. Paratrichodorus divergens sp. n. most closely 11 resembles P.
    [Show full text]
  • E PLANTAS: Fundamentos E Importância
    NEMATOLOGIA DE PLANTAS: fundamentos e importância ii NEMATOLOGIA DE PLANTAS: fundamentos e importância Organizado por Luiz Carlos C. Barbosa Ferraz Docente aposentado da Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brasil Derek John F inlay Brown Pesquisador aposentado do Scottish Crop Research Institute (SCRI), atual James Hutton Institute, Dundee, Escócia uma publicação da iii Sociedade Brasileira de Nematologia / SBN Sede atual: Universidade Estadual do Norte Fluminense Darcy Ribeiro / CCTA. Av. Alberto Lamego, 2000 – Parque California 28013-602 – Campos dos Goytacazes (RJ) – Brasil E-mail: [email protected] Telefone: (22) 3012-4821 Site: http://nematologia.com.br © Sociedade Brasileira de Nematologia 2016. Todos os direitos reservados. É vedada a reprodução desta publicação, ou de suas partes, na forma impressa ou por outros meios, sem prévia autorização do representante legal da SBN. A sua utilização poderá vir a ocorrer estritamente para fins didáticos, em caráter eventual e com a citação da fonte. Ficha catalográfica elaborada por Marilene de Sena e Silva - CRB/AM Nº 561 F368 n FERRAZ, L.C.C.B.; BROWN, D.J.F. Nematologia de plantas: fundamentos e importância. L.C.C.B. Ferraz e D.J.F. Brown (Orgs.). Manaus: NORMA EDITORA, 2016. 251 p. Il. ISBN: 978-85-99031-26-1 2. Nematologia. 2. Doenças de plantas. 3. Vermes. I. Ferraz & Brown. II. Título. CDD: 632 iv Para Maria Teresa, Alex e Thais, que souberam entender a minha irresistível atração pela Nematologia e aceitar as muitas horas de plena dedicação a ela. In memoriam Alexandre M. Cintra Goulart, Anário Jaehn, Dimitry Tihohod, José Julio da Ponte, Luiz G.
    [Show full text]
  • Xiphinema Japonicum N. Sp. (Nematoda: Longidorinae) from the Rhizosphere of Japanese Podocarpus Macrophyllus (Thunb.), a Cryptic
    Journal of Nematology 49(4):404–417. 2017. Ó The Society of Nematologists 2017. Xiphinema japonicum n. sp. (Nematoda: Longidorinae) from the Rhizosphere of Japanese Podocarpus macrophyllus (Thunb.), a Cryptic Species Related to Xiphinema bakeri Williams, 1961 1 2 3 4 5 LIRONG ZHAO, WEIMIN YE, MUNAWAR MARIA, MAJID PEDRAM, AND JIANFENG GU Abstract: Xiphinema japonicum n. sp., isolated in Ningbo, China, from the rhizosphere of Podocarpus macrophyllus (Thunb.) imported from Japan is described. The new species belongs to Xiphinema non-americanum group 7 and is characterized by medium body length (3.0–3.7 mm), total stylet length 190–201 mm, vulva located anteriorly (V = 30.5%–35.3%), two equally developed female genital branches without uterine differentiation (no Z or pseudo-Z organ and/or spines in the uteri), short tail, convex-conoid with subdigitate peg in terminus, and absence of males. The species has four juvenile developmental stages (J1 was not found). The polytomous identification codes of the new species are (codes in parentheses are exceptions) A4-B4-C4-D5(4)-E2(3)-F3(4)-G2(3)- H2-I3-J4-K?-L1. Morphologically, the new species is mainly characterized by combination of the codes C4 and E2(3), making the species unique and different from other species in the genus. It is most similar to the North American species Xiphinema bakeri, herein considered as its cryptic species by the nature of high morphological similarity, but with significant differences in DNA sequences in nearly full length 18S, ITS1, 28S D2/D3, and cytochrome c oxidase subunit 1 sequences.
    [Show full text]