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Journal of Nematology

Society of Nematologists

Subject: Life Sciences

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ISSN: 0022-300X

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Description of Pseudacrobeles (Pseudacrobeles) curvatus sp. n. (Cephalobidae: Rhabditida) in South Korea

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VOLUME 50 , ISSUE 3 (September 2018) - List of articles

Terrestrial Non-Parasitic Nematode Assemblages associated With Glyphosate-tolerant and Conventional Soybean-Based Cropping Systems

Akhona Mbatyoti/ Mieke Stefanie Daneel/ Antoinette Swart/ Dirk de Waele/ Hendrika Fourie

Information about the effects of glyphosate on nematodes is limited and contradictory, while none existing for South African agricultural fields. The abundance and identity of non-parasitic nematodes in the rhizospheres of commercial glyphosate-tolerant and conventional (non-glyphosate-tolerant), soybean cultivars from cultivated fields, and adjacent natural vegetation (reference system) were obtained for two growing seasons. The impact of glyphosate was also investigated on non-parasitic nemato(..)

DOI: 10.21307/jofnem-2018-028

Published Online: 17-October-2018

Responses of Anastrepha suspensa, Diachasmimorpha longicaudata, and Sensitivity of Guava Production to Heterorhabditis bacteriophora in Fruit Fly Integrated Pest Management

William K. Heve/ Fahiem E. El-Borai/ Evan G. Johnson/ Daniel Carrillo/ William T. Crow/ Larry W. Duncan

Caribbean fruit fly, also known as Caribfly or Anastrepha suspensa, is a major tephritid pest of guavas. A virulent entomopathogenic nematode (EPN) species was investigated to suppress the fruit-to-soil stages of Caribflies, which are also attacked by the koinobiont parasitoid Diachasmimorpha longicaudata in south Florida. The main objective was to develop a feasible and cost-effective EPN-application method for integrated pest management (IPM) of Caribfly to improve guava production. Naturally (..)

DOI: 10.21307/jofnem-2018-039

Published Online: 17-October-2018

Survival and Infectivity of Entomopathogenic Nematodes Formulated in Sodium Alginate Beads

Jaime Ruiz-Vega/ Carlos I. Cortés-Martínez/ Cipriano García-Gutiérrez

An alternative control method to the use of chemical insecticides against soil dwelling insect pests is the application of entomopathogenic nematodes formulated in alginate beads for enhanced shelf life. The aim was to compare the benefit on nematode survival and infectivity of: (i) pre-conditioning of juveniles, and (ii) coating of alginate beads. The nematodes Steinernema glaseri, Steinernema carpocapsae, and Heterorhabditis bacteriophora were reproduced in last instar larvae of the wax moth G(..)

DOI: 10.21307/jofnem-2018-037

Published Online: 17-October-2018

High Mitochondrial Genome Diversity and Intricate Population Structure of Bursaphelenchus xylophilus in Kyushu, Japan

Hanyong Zhang/ Erika Okii/ Eiji Gotoh/ Susumu Shiraishi

Mitogenomic diversity and genetic population structure of the pinewood nematode (PWN) Bursaphelenchus xylophilus inhabiting Kyushu, Japan were analyzed. A method for performing long PCR using single nematodes and sequencing nematode mitochondrial genomes individually is presented here. About 8 kb (∼55%) of the complete mitochondrial genome was successfully obtained from 285 individuals collected from 12 populations. The 158 single nucleotide polymorphisms detected corresponded to 30 haplotypes, (..)

DOI: 10.21307/jofnem-2018-034

Published Online: 17-October-2018

NMR Analysis Reveals a Wealth of Metabolites in Root-Knot Nematode Resistant Roots of Citrullus amarus Watermelon Plants

Mihail Kantor/ Amnon Levi/ Judith Thies/ Nihat Guner/ Camelia Kantor/ Stuart Parnham/ Arezue Boroujerdi

Citrullus amarus (CA) (previously known as Citrullus lanatus var. citroides) accessions collected in southern Africa are known to have resistance to root-knot nematodes (RKN) and are suitable rootstocks for grafted watermelon. The objective of this study was to conduct a comparative metabolomics analysis and identify unique metabolites in roots of CA accessions versus roots of watermelon cultivars (Citrullus lanatus (Thunb.) Matsum. and Nakai var. lanatus; CL). Nuclear magnetic resonance (NMR) t(..)

DOI: 10.21307/jofnem-2018-030

Published Online: 17-October-2018

Nematicidal Weeds, Solanum nigrum and Datura stramonium

Chrisostomos Oplos/ Kodjo Eloh/ Urania-Menkissoglu Spiroudi/ Caboni Pierluigi/ Nikoletta Ntalli

We investigated Solanum nigrum (seeds) and Datura stramonium (shoots) against root-knot nematodes in terms of J2 paralysis and egg hatch inhibition (methanol extract), as well as inhibition of nematode development in host roots (soil amending with either S. nigrum seeds’ or D. stramonium shoots’ meal). Datura stramonium was found equally effective at inhibiting motility of Meloidogyne incognita and Meloidogyne javanica (both EC50 = 427 μg mL−1 at 3 day), but inhibition occurred more quickly for (..)

DOI: 10.21307/jofnem-2018-017

Published Online: 17-October-2018

Short-term Impacts of Tillage and Fertilizer Treatments on Soil and Root Borne Nematodes and Maize Yield in a Fine Textured Cambisol

N. Mashavakure/ A. B. Mashingaidze/ R. Musundire/ E. Gandiwa/ V. K. Muposhi/ C. Thierfelder/ N. Nhamo/ T. Bere/ S. S. Akhtar

Conservation agriculture (CA) based on the principles of minimum soil disturbance, crop residue retention, and crop rotation has been the focus of intensive research in recent years. A study was carried out to determine the effects of tillage and fertilizer on the population densities of plant-parasitic nematodes in maize. Three tillage regimes, (i) basin planting, (ii) rip line seeding, and (iii) conventional tillage, were combined with four fertilizer regimes: (i) no-fertilizer, (ii) low ferti(..)

DOI: 10.21307/jofnem-2018-033

Published Online: 17-October-2018

Morphological and Molecular Characterization of Labrys filiformis n. sp. (Rhabditida: Tylenchidae) from Iran

Yousef Panahandeh/ Joaquín Abolafia/ Ebrahim Pourjam/ Robin M. Giblin-Davis/ Farahnaz Jahanshahi Afshar/ Majid Pedram

Labrys filiformis n. sp., the second species of the rare genus Labrys, was recovered from natural forests of Gilan province and is described based upon morphological and molecular characters. The new species is characterized by its smooth cuticle under light microscopy, lateral field with two incisures forming a single plain band, lip region continuous with body contour, dorso-ventrally flattened and forming four poorly prominent lobes, having a dorso-ventrally narrower protuberant labial plate (..)

DOI: 10.21307/jofnem-2018-031

Published Online: 17-October-2018

Two New Species of Pristionchus (Nematoda: Diplogastridae) from Taiwan and the Definition of the pacificus Species-Complex Sensu Stricto

Kohta Yoshida/ Matthias Herrmann/ Natsumi Kanzaki/ Christian Weiler/ Christian Rödelsperger/ Ralf J. Sommer

Pristionchus pacificus Sommer, Carta, Kim, and Sternberg, 1996 is an important model organism in evolutionary biology that aims to integrate developmental biology and evo-devo with population genetics and ecology. Functional studies in P. pacificus are supported by a well-established phylogenetic framework of around 30 species of the genus Pristionchus that have been described in the last decade based on their entomophilic and necromenic association with scarab beetles. Biogeographically, East A(..)

DOI: 10.21307/jofnem-2018-019

Published Online: 17-October-2018

Description of Xiphinema parachambersi sp. n. (Nematoda: Longidoridae) from Imported Ornamental Plants in Japan with a Key to Xiphinema Species in Group 1

Munawar Maria/ Weimin Ye/ Qing Yu/ Jianfeng Gu

Xiphinema parachambersi n. sp. recovered in Ningbo, China, from the rhizosphere of ornamental plants (Gardenia jasminoides and Euonymus hamiltonianus) imported from Japan is described. The new species is characterized by a long female body 1,830 to 2,109 μm long, odontostyle 105 to 116 μm long, reproductive system mono-opisthodelphic, vulva located anteriorly at 25.2 to 27.7% of total body, long ovary 119 to 292 μm with simple uterus and Z-organ absent, female tail elongated conoid with a rounde(..)

DOI: 10.21307/jofnem-2018-027

Published Online: 17-October-2018

Characterization of Meloidogyne indica (Nematoda: Meloidogynidae) Parasitizing Neem in India, with a Molecular Phylogeny of the Species

Victor Phani/ Satyapal Bishnoi/ Amita Sharma/ Keith G. Davies/ Uma Rao

Neem is a perennial plant of family Meliaceae grown very commonly in India. During a survey in Rajasthan, India; a population of root-knot nematode was found in association with tender neem plants causing yellowing, stunting, and heavy root galling. Inspection of the perineal pattern morphology of the adult females, extracted from the galled roots, primarily led to identification of the species as Meloidogyne indica. Further, detailed morphological and morphometric illustrations of second-stage (..)

DOI: 10.21307/jofnem-2018-015

Published Online: 17-October-2018

Discovery and Identification of Meloidogyne Species Using COI DNA Barcoding

Thomas Powers/ Timothy Harris/ Rebecca Higgins/ Peter Mullin/ Kirsten Powers

DNA barcoding with a new cytochrome oxidase c subunit 1 primer set generated a 721 to 724 bp fragment used for the identification of 322 Meloidogyne specimens, including 205 new sequences combined with 117 from GenBank. A maximum likelihood analysis grouped the specimens into 19 well-supported clades and four single-specimen lineages. The “major” tropical apomictic species (Meloidogyne arenaria, Meloidogyne incognita, Meloidogyne javanica) were not discriminated by this barcode although some clo(..)

DOI: 10.21307/jofnem-2018-029

Published Online: 17-October-2018

First Report of Bitylenchus hispaniensis, Pratylenchoides alkani, and Helicotylenchus vulgaris in Association with Cultivated and Wild Olives in Crete, Greece and Molecular Identification of Helicotylenchus microlobus and Merlinius brevidens

Emmanuel A. Tzortzakakis/ Carolina Cantalapiedra-Navarrete/ Maria Kormpi/ Maria S. Lazanaki/ Pablo Castillo/ Antonio Archidona-Yuste

Nematode samplings in cultivated and wild olive in Crete, Greece, yielded the presence of Bitylenchus hispaniensis, Helicotylenchus microlobus, Helicotylenchus vulgaris, Merlinius brevidens, and Pratylenchoides alkani. With the exception of H. microlobus and M. brevidens, reports of these plant-parasitic nematode species constitute new records for Greece. Bitylenchus hispaniensis is also reported for first time in a country outside of Spain, where it was originally described. Pratylenchoides alk(..)

DOI: 10.21307/jofnem-2018-020

Published Online: 17-October-2018

Morphological and Molecular Characterization of Paralongidorus sali Siddiqi, Hooper, and Khan, 1963 with a Description of the First-Stage Juvenile and Male of Longidorus jonesi Siddiqi, 1962 from China

Ruihang Cai/ Munawar Maria/ Nan Qu/ Pablo Castillo/ Jingwu Zheng

Longidorids are economically important plant-parasitic nematodes because several species are virus vectors. Populations of Paralongidorus sali and Longidorus jonesi, isolated from woody perennials of Hangzhou, Zhejiang, China, were characterized molecularly and morphologically. The morphometric data of the Chinese populations of both species were compared with other populations. The present study provided a first record of the occurrence of Paralongidorus in China coupled with description of the(..)

DOI: 10.21307/jofnem-2018-016

Published Online: 17-October-2018

Description of Aphelenchoides giblindavisi n. sp. (Nematoda: Aphelenchoididae), and Proposal for a New Combination

Farzad Aliramaji/ Ebrahim Pourjam/ Sergio Álvarez-Ortega/ Farahnaz Jahanshahi Afshar/ Majid Pedram

One new and one known species of the genus Aphelenchoides from Iran are studied. Aphelenchoides giblindavisi n. sp. is mainly characterized by having five lines in the lateral fields at mid-body, and a single mucro with several tiny nodular protuberances, giving a warty appearance to it, as revealed by detailed scanning electron microscopic (SEM) studies. The new species is further characterized by having a body length of 546 to 795 μm in females and 523 to 679 μm in males, rounded lip region se(..)

DOI: 10.21307/jofnem-2018-035

Published Online: 17-October-2018

First Report of Stubby-Root Nematode, Paratrichodorus minor, on Onion in Georgia, U.S.A

Abolfazl Hajihassani/ Negin Hamidi/ Bhabesh Dutta/ Chris Tyson

Onions (Allium cepa L.) are the leading vegetable crop in Georgia accounting for 13.7% of total state vegetable production (Wolfe and Stubbs, 2017). In November 2017, two samples each of onion (var. Candy Ann) seedlings and soil were received from the University of Georgia Cooperative Extension office in Tattnall County, GA. The samples were collected from a nursery fumigated with metam sodium and used for sweet onion transplant production. Symptoms of the damaged plants included stunted growth (..)

DOI: 10.21307/jofnem-2018-038

Published Online: 17-October-2018

First Report of the Yellow Nutsedge Cyst Nematode, Heterodera cyperi, in Georgia, U.S.A.

Abolfazl Hajihassani/ Bhabesh Dutta/ Ganpati B. Jagdale/ Sergei A. Subbotin

Soil samples collected during a survey for plant-parasitic nematodes in Tift County GA in summer 2017 were submitted for routine diagnosis of nematodes to the Extension Nematology Lab at the Department of Plant Pathology, University of Georgia, Athens, Georgia. Cyst nematodes recovered by centrifugal flotation technique were discovered in the samples from two research sites in a field with a history of tobacco and vegetable production. Cyst nematodes from tobacco (10 cysts/100 cm3 of soil) and v(..)

DOI: 10.21307/jofnem-2018-036

Published Online: 17-October-2018

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