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| | Introduction to the Nematoda |
 | | Many nematodes are able to suspend their life processes completely when conditions become unfavorable; in these resistant states they can survive extreme drying, heat, or cold, and then return to life when favorable conditions return. | | | This group, variously known as Aschelminths or Pseudocoelomata, is today no longer recognized as a natural one. | | | This leads into a long simple gut cavity lacking any muscles, and then to an anus near the tip of the body. |
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http://www.ucmp.berkeley.edu/phyla/ecdysozoa/nematoda.html
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| | Nematode Management In Commercial Vegetable Production |
| | Fallowing by use of herbicides to deplete nematode populations is a much slower process because the soil is not disturbed, thereby subjecting nematodes from deeper soil layers to the drying action of sun and wind. | | | Preliminary research has demonstrated that these varieties confer a high degree of resistance to the root-knot nematode, however expression of resistance is heat sensitive. | | | Although sensitive, many nematodes still survive the fumigant treatment even at application rates sufficient to affect other more tolerant pests. |
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http://edis.ifas.ufl.edu/NG004
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| | Nematodes |
| | In short, lack of movement is not always a sign of mortality; nematodes may have to be stimulated (e.g., probes, acetic acid, gentle heat) to move before assessing viability. | | | Hundreds of researchers representing more than forty countries are working to develop nematodes as biological insecticides. | | | Moreover, the highly active and robust infective juveniles are difficult to contain within formulations that rely on partial nematode dehydration. |
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http://www.nysaes.cornell.edu/ent/biocontrol/pathogens/nematodes.html
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| | Alternative Nematode Control |
| | The food-web's stability is challenged by the yearly turning of the soil, which reduces the numbers of organisms that displace or prey on plant-parasitic nematodes, while bringing more nematodes to the surface from deeper soil. | | | Identification of species, and determination of which species, if any, are responsible for the observed damage, is the work of an experienced nematologist. | | | Those interested in using this biocontrol will need to experiment with application rates and techniques to develop methods best suited to their operations. |
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http://www.attra.org/attra-pub/nematode.html
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| | soil-inhabiting nematodes - Phylum Nematoda |
| | Although the plant-parasitic nematodes are relatively well-known, most of the free-living nematodes have not been studied very much. | | | Since free-living nematodes have not been studied very much, the food habits of some of them are unknown. | | | Sometimes a nematode showing this feeding behavior may be classified simply as a root or plant associate. |
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http://creatures.ifas.ufl.edu/nematode/soil_nematode.htm
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| | Soybean Cyst Nematode, AC-39-98 |
| | During this immobile phase, the nematode molts before reaching adulthood, at the last molt the nematode becomes either male or female. | | | Therefore, for the rotation to work, EXCELLENT weed management is vital. | | | The first step in management of soybean cyst nematode is to determine which fields have soybean cyst nematode present and how many nematodes are there. |
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http://ohioline.osu.edu/ac-fact/0039.html
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| | eMedicine - Nematode Infections : Article by Murat Hökelek, MD, PhD |
| | Stool examination for intestinal nematodes using native, zinc sulfate flotation, or formalin-ethyl acetate sedimentation techniques | | | Also affects other ligand-gated chloride channels (eg, those gated by GABA). | | | Strongyloidosis may be fatal in immunocompromised patients and in newborns. |
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http://www.emedicine.com/med/topic1594.htm
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| | Nematode Short Course |
| | Participants have the opportunity to study and learn to identify the nematodes at their own pace. | | | 8:45 FILM: BEHAVIOR OF THE ROOT NEMATODE, Pratylenchus penetrans | | | This course provides beginning training in separation of nematodes from soil and plant material and identification of nematodes to genus. |
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http://pppweb.clemson.edu/nematode.htm
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| | IPM - Nematode Management |
| | Crab meal, like other nematode control practices, must be applied before planting because these materials need to penetrate as much of the rooting zone as possible to be effective. | | | Nematode resistant cultivars have been developed using conventional breeding techniques, but there is increasing interest in developing resistances through genetic engineering. | | | Nematodes are thread-like roundworms invisible to the naked eye. |
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http://www.cals.ncsu.edu/sustainable/peet/IPM/nematodes/c06nemat.html
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| | Roundworm - Wikipedia, the free encyclopedia |
| | There are no circular muscles, so the body can only undulate from side to side. | | | One roundworm of note is Caenorhabditis elegans, which lives in the soil and has found much use as a model organism. | | | Most free-living nematodes are microscopic, though a few parasitic forms can grow to several metres in length. |
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http://en.wikipedia.org/wiki/Nematode
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| | UC IPM: UC Management Guidelines for Nematodes on Cucurbits |
| | There are no current treatment guidelines for lesion, stubby root or needle nematodes, but if root knot nematodes are present, treat. | | | The symptoms described below may be indications of a nematode problem, but are not diagnostic as they could result from other causes such as diseases, insect injury, or nutrient deficiencies. | | | Lesion nematodes have not been found to cause economic damage in California, but the root lesions formed by their feeding may be invaded by fungi and bacteria. |
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http://www.ipm.ucdavis.edu/PMG/r116200111.html
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| | Nematodes: Management Guidelines for Kansas Crops |
| | Average survival rates in Kansas range from 20 percent for lesion nematodes to 80 percent for the soybean cyst nematode. | | | Yield losses may also occur in the absence of distinctive symptoms. | | | Threshold levels are provided to assist interpretation of nematode assay results from the KSU Plant Disease Diagnostic Clinic or other laboratories that have been adjusted to reflect extraction efficiencies. |
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http://nematode.unl.edu/extpubs/nemakan.htm
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| | reniform nematode - Rotylenchulus reniformis |
| | Aspects of nematode control on snapbean with emphasis on the relationship between nematode density and damage. | | | Apt suggested that moist fallow would be more effective as a means of control. | | | Chile and Switzerland are among the countries that have quarantine against reniform nematode. |
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http://creatures.ifas.ufl.edu/nematode/r_reniformis.htm
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| | Nematode Net |
| | Please note that our lab is a sequencing facility; we are not clinicians, and as such we are not qualified to provide medical advice regarding parasitic nematode afflictions. | | | Also in development is a KEGG pathway map viewer to navigate nematode sequences that map to known pathway genes. | | | Users will also be able to upload and view their own annotations in relation to the data that Nematode.net provides using DAS. |
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http://www.nematode.net
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| | NEMATODE |
| | Canada does not seem to view the nematode as a vital threat. | | | Canada also has been at the forefront of scientific research to determine the actual risk of nematode transmission. | | | The ban was a means to avoid the inadvertent importation of the pinewood nematode into Europe, thus preventing destructive affects on the environment. |
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http://www.american.edu/projects/mandala/TED/NEMATODE.HTM
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| | mole cricket nematode - Steinernema scapterisci |
| | Progeny of these nematodes were used in laboratory experiments to infect other mole crickets. | | | This fact shows that the nematode can feed on different bacteria, consequently, the nematode survives very well under field conditions. | | | aureofacians, and Escherichia coli were used for in vitro culture of this nematode. |
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http://creatures.ifas.ufl.edu/nematode/mole_cricket_nematode.htm
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| | The Virtual Nematode |
| | The minute size of nematodes often makes them difficult to manipulate and study. | | | The Virtual Agroecosystem is an ongoing project to create virtual reality (VR) worlds for the visualization of agroecosystem concepts and processes, particularly those related to plant pathology and weed science. | | | Department of Plant Pathology, Physiology, and Weed Science |
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http://www.ppws.vt.edu/~sforza/nematode.html
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| | Nematode Management in Soybeans |
| | Tolerant varieties, however, neither prevent nor limit nematode reproduction and development. | | | Information on soybean resistance to other nematodes tends to be less accessible. | | | There are at least nine populations of cyst nematodes (identified by numbers), and varietal resistance is specific. |
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http://www.agr.state.nc.us/agronomi/nnote2.htm
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| | The Sting Nematode |
| | Yield losses can be severe, approaching 100 percent in localized areas of infested | | | Other field problems can mimic sting nematode symptoms. | | | The most effective control currently available for the sting nematode is an at-planting application of a labelled nematicide. |
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http://nematode.unl.edu/stingnem.htm
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| | BioMed Central about us Press releases |
| | Gene study determines how humans are related to fruit flies and nematode worms | | | Genetically modified eggplants (aubergines) shown to be 30% more productive | | | New website could stop intensive care beds going to waste |
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http://www.biomedcentral.com/info/pr-releases.asp
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| | nematode website |
| | The pinewood nematode was first thought to be introduced into the U.S. from Japan. | | | Plant and Fungi Nematodes are divided into three groups, depending on their feeding habits. | | | Female Root-Knot nematodes reproduce asexually, and males are only formed in response to stress. |
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http://www.cals.ncsu.edu/course/pp318/nem/nematode.htm
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| | Recent Publications, The Bird Laboratory, NCSU |
| | Lotus japonicus: A new model to study root-parasitic nematodes. | | | The soybean cyst nematode, Heterodera glycines: a genetic model system for the study of plant-parasitic nematodes. | | | Horizontally transferred genes in plant-parasitic nematodes: A high-throughput genomic approach. |
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http://www.cals.ncsu.edu:8050/pgg/research/publ.html
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| | ODIN006 - Pine Wood Nematode |
| | The first symptom of the pine wood nematode disease is a general wilt of the needles. | | | This nematode was first identified in the United States in Missouri in 1979. | | | More research must be done to determine how damaging the nematode will be to these plants. |
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http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/odin006/odin006.htm
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| | SOY004 - Management of Columbia Lance Nematode on Soybean |
| | Sub-soiling has often been as effective as a nematicide treatment in increasing soybean yield. | | | Accurate diagnosis of nematode problems on soybean can be accomplished by several means. | | | It may occur with other nematodes such as soybean cyst, reniform, lesion, root-knot and sting. |
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http://www.ces.ncsu.edu/depts/pp/notes/Soybean/soy004/soy004.htm
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| | Nematode Samples |
| | Research: The research assay determines nematode populations in soil from research plots. | | | Nematodes do not occur uniformly throughout a field; thus, more than one subsample must be taken from the same field. | | | Contact the Nematode Assay Lab for further information. |
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http://www.ppws.vt.edu/~clinic/nematode.html
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| | Soil Organic Matter, Green Manures and Cover Crops For Nematode Management |
| | Green manuring has also been demonstrated to reduce levels of nematodes in the soil in some cases, in addition to reducing the sensitivity of plants to modest levels of nematode injury by improving the soil environment of their roots. | | | Some of those creatures are natural enemies of plant nematodes; increasing their numbers enhances "natural" nematode control. | | | Several plants have been found to help control some kinds of nematodes when grown for several months in soil where they are present, if no good hosts of those nematode species are present. |
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http://edis.ifas.ufl.edu/VH037
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| | FDA/CFSAN Bad Bug Book Ascaris lumbricoides and Trichuris trichiura |
| | Humans worldwide are infected with Ascaris lumbricoides and Trichuris trichiura; the eggs of these roundworms (nematode) are "sticky" and may be carried to the mouth by hands, other body parts, fomites (inanimate objects), or foods. | | | Molting (ecdysis) occurs at various points along this path and, typically for roundworms, the male and female adults in the intestine are 5th-stage nematodes. | | | Vague digestive tract discomfort sometimes accompanies the intestinal infection, but in small children with more than a few worms there may be intestinal blockage because of the worms' large size. |
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http://www.cfsan.fda.gov/~mow/chap30.html
(817 words)
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| | Cotton Nematode Research and Education Program |
| | About the Cotton Nematode Research and Education Program | | | Details about how the program is funded and what the program objectives are. | | | The purpose of nematode management is to keep nematode population densities at a low level during the early growing season to allow cotton plants to establish healthy root systems. |
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http://www.cotton.org/tech/pest/nematode
(116 words)
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| | Nematode Dupes House Flies |
| | A parasitic nematode that deceives houseflies into spreading nematode offspring instead of fly eggs could become a classical biological control agent, according to Agricultural Research Service scientist Christopher J. Geden. | | | Geden has studies under way to determine the safety of releasing the nematode and the likelihood of its survival in a typical farm setting. | | | In lab studies using modest application rates, nematodes reduced house fly numbers by about 90 percent. |
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http://www.ars.usda.gov/is/AR/archive/oct98/nema1098.htm
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| | China Travel |
| | The pinewood nematode, also called "xianchong" in Chinese, was initially intro |
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http://www.chinainfotravel.com/china_travel.htm
(15456 words)
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| | Caenorhabditis elegans WWW Server |
| | Sydney Brenner began using it to study the genetics of development and neurobiology. | | | Users in Europe may find access to the Greek mirror of the C elegans WWW Server more convenient. | | | Caenorhabditis elegans is a small (about 1 mm long) soil nematode found in temperate regions. |
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http://elegans.swmed.edu
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| | Multi-Language Nematode Sites on the Internet |
| | This site contains information about research on parasitic nematodes. | | | The Nematodes: Parasites and Parasitic Diseases of Domestic Animals | | | Biocontrol network, with IPM information on pests and beneficials including nematodes. |
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http://pppweb.clemson.edu/Nematode/NematodeSites.html
(216 words)
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| | The Blaxter nematode Lab at ICAPB |
| | With funding from the Wellcome Trust, we are sequencing expressed sequence tags from a number of parasitic nematode taxa (see diagram below). | | | Expressed sequence tags are a cost efficient and rapid way of identifying genes. | | | A sister project in the USA (the Washington University Nematode EST Program) is sequencing from additional species (in taxa marked with an asterisk below). |
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http://nema.cap.ed.ac.uk/nematodeESTs/Nest.html
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| | Nematode |
| | Tables after 'Diagnosing helminthiasis through coprological examination' Thienpont et al. | | | Nematodes of Veterinary importance Links Page: (By Host name and organ) | | | Links at foot of page Back to Veterinary Endo-Parasites |
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http://www.soton.ac.uk/~ceb/EctoEndodirectory/nematode.htm
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| | NCDA&CS Agronomic Division - Nematode Assay |
| | Understanding the Diagnostic Nematode Assay Report — pdf | | | Nematode Parasites of Corn and Turf Grass; also Sting Nematodes | | | Pick them up at your county Cooperative Extension office or at the Agronomic Division office in Raleigh. |
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http://www.ncagr.com/agronomi/nemhome.htm
(86 words)
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| | PestTracker Invasive Insect: Golden Nematode, Globodera rostochiensis |
| | 11.08.2004 Golden Nematode Quarantine Expanded [NY Cayuga cnty-1 field 69 FR64639] | | | 02.14.2005 Final Rule: Golden Nematode Quarantine Expanded [NY Cayuga cnty-1 field 70 FR7379] | | | 04.20.2004 Final Rule: Golden Nematode Quarantine Expanded [69 FR21039] |
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http://ceris.purdue.edu/napis/pests/gn
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