21.
Differences in susceptibility of white grub species to entomopathogenic nematodes: the relative contribution of symbiotic bacteria and nematodes
- An, Ruisheng
As susceptibility of white grub species to entomopathogenic nematodes differs, we compared the virulence of Photorhabdus temperata and Xenorhabdus koppenhoferi, the symbionts of nematodes Heterorhabditis bacteriophora and Steinernema scarabaei, respectively, to three white grub species Popillia japonica, Rhizotrogus majalis, and Cyclocephala borealis. Both bacteria were virulent to all three grub species even at as low as 2 cells /grub. However, the median lethal dose at 48 h post injection and median lethal time at 20 cells /grub showed that P. temperata was more virulent than X. koppenhoferi to C. borealis. There were no differences in virulence of two bacteria against...
22.
Plant-Parasitic nematodes infecting grapevine in southern Spain and susceptible reaction to root-knot nematodes of rootstocks reported as moderately resistant
- Téliz, D.; Landa, Blanca B.; Rapoport, Hava F.; Perez Camacho, F.; Jiménez-Díaz, Rafael M.; Castillo, Pablo
Incidence and nematode population densities of plant-parasitic nematodes were determined in 64 samples of soil and grapevine roots collected from commercial vineyards in southern Spain between October 2003 and May 2005. In addition, a histopathological study was done of root-stock roots naturally infected by root-knot nematodes (Meloidogyne spp.). Nematodes infecting the rootstocks were identified according to conventional procedures, and the Meloidogyne spp. were furthermore identified by sequence characterized amplified region-polymerase chain reaction (SCAR-PCR) and isozyme esterase analyses. The most important plant-parasitic nematodes detected, in order of decreasing frequency of total soil infestation and root infection (percentage of samples), were Mesocriconema...
23.
Differential responses of nematode communities to soybean genotypes resistant and susceptible to Heterodera glycines race 3
- Neves,Dinaelia Iva das; Huang,Shiou Pin
Heterodera glycines and Helicotylenchus dihystera were the two most abundant plant-parasitic nematodes found in two H. glycines race 3-infested fields, Chapadão do Céu, MS and Campo Alegre, MG. These fields had been planted with resistant (R) and susceptible (S) plants to cyst nematodes. In the first field, soybean (Glycine max) FT-Cristalina (S) was susceptible to H. glycines but resistant to H. dihystera, while GOBR93 122243 (R) was just the opposite. In the second field, M-Soy 8400 (R) was more resistant to the spiral nematode than M-Soy8411 (S), but the resistance to the cyst nematode was not different between the two...
24.
Nematodos asociados a plantas forestales en Portugal
- Macara, A.M.
25.
Determining the Factors Affecting the Natural Occurrence of Entomopathogenic Nematodes in Turfgrass: A Principal Components Analysis
- Alumai, Alfred
We conducted a study to determine the relationship between turfgrass management intensity and natural occurrence of entomopathogenic nematodes (EPNs) on golf courses in Ohio. 159 soil samples were collected from putting greens, fairways and rough areas three distinct surfaces that are managed differently. EPNs were recovered from soil samples using the insect baiting technique. Soil samples were also analyzed for texture, organic matter, pH, phosphorus, calcium, magnesium and potassium. Principal components and correlation estimates were used to determine possible predictors of nematode occurrence in turfgrass. We found that surface type and soil texture were important factors in predicting nematode...
26.
Recherches sur l'organisation et le développement des Nématodes.
- Jammes, Léon, 1867-
xiv, 205 p.
27.
Human case of gastric infection by a fourth larval stage of Pseudoterranova decipiens (Nematoda, Anisakidae)
- Mercado,Rubén; Torres,Patricio; Maira,Jorge
Only three cases of human infection by anisakid nematodes have been reported in Chile since 1976. In the present case, an anisakid worm, identified as a fourth-stage Pseudoterranova decipiens larva, was removed with a gastroendoscopic biopsy clipper from the stomach of a 45 year-old man from southern Chile. The patient, who presented acute epigastric pain and a continuous sensation of having an empty stomach, reported having eaten smoked fish. The worm was fixed in 70% ethanol and cleaned in lactophenol for morphological study. The morphometric characteristics of the worm are described and drawn. Anisakid larvae in fish flesh can be...
28.
Supervivencia y parasitismo de nematodos entomopatógenos para el control de Hypothenemus hampei Ferrari, (Coleoptera: Scolytidae) en frutos de café
- Molina Acevedo, J.P.; López Núñez, J. C.
El uso de nematodos entomopatógenos (NE) para el control de la broca del café, en frutos que caen al suelo después de la cosecha y que usualmente quedan cubiertos por hojarasca, pueden ser una herramienta efectiva de control. La humedad es un factor limitante para la actividad de NE expuestos al ambiente, por lo que inicialmente se evaluó la supervivencia y la infección de juveniles infectivos (JI) pertenecientes a dos especies NE: Heterorhabditis bacteriophora (Milstead y Poinar) (Rhabditida: Heterorhabditidae) y Steinernema feltiae (Dutky) (Rhabditida: Steinernematidae). Se emplearon cuatro concentraciones (0,1; 0,5; 1; 10%) de dos químicos con actividad deslizante y...
29.
Lateral movement of the entomopathogenic nematode Heterorhabditis bacteriophora in soil under laboratory conditions
- Bal, Harit K
Despite the growing importance of entomopathogenic nematodes as biocontrol agents for soil inhabiting insect pests, little is known of their population and spatial ecology. In a series of three consecutive laboratory experiments, the horizontal movement of Heterorhabditis bacteriophora GPS11 strain was quantified in 5 cm deep autoclaved soil with 24% moisture content placed in three different sized arenas (22.86 cm x 22.86 cm, 61 cm x 61 cm, and 122 cm x 122 cm) at room temperature (21°C). A single 10-day old cadaver of fourth instar Galleria mellonella infected with H. bacteriophora was placed in the center of each arena...
30.
Studies on endocrine development of nematodes / by Roger D.W. Dennis
- Dennis, Roger Digby Wilkins
x, 193 leaves : ill., tables, photos ; 26 cm.
31.
An evaluation of certain criteria used in nematode taxonomy
- Evans, Adrian Anthony Farrall
v, 176 leaves : ill.
32.
Investigation of the effect of agricultural spray application equipment on damage to entomopathogenic nematodes - a biological pest control agent
- Fife, Jane Patterson
Biological pesticides (i.e., biopesticides) are living systems, which introduce additional challenges with respect to formulation and delivery not previously encountered with conventional chemical pesticides. Understanding the effects of the different physical phenomena within a spray system is important to begin identifying the equipment characteristics and operating conditions that are least detrimental to the biological agents. Specifically, this work considered the effects of pressure differentials and hydrodynamic stress on damage to a benchmark biological pest control agent, entomopathogenic nematodes (EPNs). Four EPN species were evaluated in this work: Heterorhabditis bacteriophora, H. megidis, Steinernema carpocapsae, and S. glaseri. Additionally, temperature influences due...
33.
Investigation of the effect of agricultural spray application equipment on damage to entomopathogenic nematodes - a biological pest control agent
- Fife, Jane Patterson
Biological pesticides (i.e., biopesticides) are living systems, which introduce additional challenges with respect to formulation and delivery not previously encountered with conventional chemical pesticides. Understanding the effects of the different physical phenomena within a spray system is important to begin identifying the equipment characteristics and operating conditions that are least detrimental to the biological agents. Specifically, this work considered the effects of pressure differentials and hydrodynamic stress on damage to a benchmark biological pest control agent, entomopathogenic nematodes (EPNs). Four EPN species were evaluated in this work: Heterorhabditis bacteriophora, H. megidis, Steinernema carpocapsae, and S. glaseri. Additionally, temperature influences due...
34.
Epidemiología de nematodos gastroentéricos de caprinos infestados en condiciones naturales en el Distrito Torres, Estado Lara, Venezuela / Elis José Aldana Carrasco
- Aldana Carrasco, Elis José; Universidad de Los Andes.. Núcleo Universitario Rafael Rangel, Tesis, 1985
Mecanografiado
35.
Nematode parasites of mammals of the order Rodentia, Lagomorpha, and Hyracoidea ...
- Hall, Maurice Crowther, 1881-1938.
3 p.l., 258 p., 1 l.
36.
Plant parasitic nematodes and the diseases they cause, by T. Goodey ... with a foreword by R. T. Leiper ...
- Goodey, Tom.
xx p., 1 l., 306 p.
37.
A cladistic analysis of the tribe Labiostrongylinea Beveridge, 1983 (Nematoda : Cloacinidae) parasitic in macropodoid marsupials (Marsupialia: Macropodoidea), with a redescription of Parazoniolaimus collaris Johnston & Mawson, 1939 /
- Smales, Lesley R. Central Queensland University. Faculty of Arts, Health and Sciences.
Morphological characters of both adult and juvenile representatives of the genera comprising the Labiostrongylinea (Strongylida: Cloacinidae: Cloacininae) were examined to prepare an amended description of Paralabiostrongylus bicollaris, a redescription of Parazoniolaimus collaris and a cladistic analysis of the tribe. A cluster ofWallabinema spp., with a fleshy collar on which amphids and deirids are borne, was used as the outgroup for the analysis. The 50% consensus tree, bootstrapped through 1000 replicates, derived from the cladistic analysis had a basal polytomy of Dorcopsinema and Paralabiostrongylus; and a crown polytomy of Labiosimplex, Labiomultiplex, Parazoniolaimus, Labiostrongylus and Potorostrongylus. This analysis provided reasonable evidence for...
38.
A cladistic analysis of the tribe Labiostrongylinea Beveridge, 1983 (Nematoda : Cloacinidae) parasitic in macropodoid marsupials (Marsupialia: Macropodoidea), with a redescription of Parazoniolaimus collaris Johnston & Mawson, 1939 /
- Smales, Lesley R.
Morphological characters of both adult and juvenile representatives of the genera comprising the Labiostrongylinea (Strongylida: Cloacinidae: Cloacininae) were examined to prepare an amended description of Paralabiostrongylus bicollaris, a redescription of Parazoniolaimus collaris and a cladistic analysis of the tribe. A cluster ofWallabinema spp., with a fleshy collar on which amphids and deirids are borne, was used as the outgroup for the analysis. The 50% consensus tree, bootstrapped through 1000 replicates, derived from the cladistic analysis had a basal polytomy of Dorcopsinema and Paralabiostrongylus; and a crown polytomy of Labiosimplex, Labiomultiplex, Parazoniolaimus, Labiostrongylus and Potorostrongylus. This analysis provided reasonable evidence for...
39.
Desarrollo y evaluación de métodos de control de nematodos en el marco de la Producción Integrada de cítricos
- Verdejo Lucas, Soledad
El proyecto planteaba evaluar métodos de control de nematodos fitoparásitos de cítricos, con especial
énfasis en Tylenchulus semipenetrans, para expandir la filosofía y procedimientos de la Producción
Integrada a una patología que limita la producción citrícola española. Los objetivos abordados se
centraban en los siguientes métodos de la Normativa para la Producción Integrada de cítricos: Control
de plagas y enfermedades, y manejo del suelo y control de las malas hierbas. Estos objetivos
respondían a requerimientos o recomendaciones compartidos por todas la Comunidades Autónomas
que disponen de esta Normativa.
40.
Oesophagostomum dentatum - potential as a model for genomic studies of strongylid nematodes, with biotechnological prospects
- Gasser, Robin B; Cottee, Pauline; Nisbet, Alasdair J; Ruttkowski, Bärbel; Ranganathan, Shoba; Joachim, Anja
There are substantial gaps in the knowledge of the molecular processes of development and reproduction in parasitic nematodes, despite the fact that understanding such processes could lead to novel ways of treating and controlling parasitic diseases, through blocking or disrupting key biological pathways. Biotechnological advances through large-scale sequencing projects, approaches for the analysis of differential gene and protein expression and functional genomics (e.g., double-stranded RNA interference) now provide opportunities to investigate the molecular basis of developmental processes in some parasitic nematodes. The porcine nodule worm, Oesophagostomum dentatum (order Strongylida), may provide a platform for testing the function of genes from...
