Results 161 to 170 of about 1,137 (192)
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Cyst Nematodes (Heteroderidae) From Argentina
Nematologica, 1987An undescribed species of the genus Cactodera Krall & Krall, 1978, was found in uncultivated soil and potato fields in the southeastern region of the Buenos Aires province. The morphology of this Cactodera species is described from cysts and second stages juveniles.
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Heterodera Mediterranea N. Sp. (Nematoda: Heteroderidae) on Pistacia lentiscus in Southern Italy
Nematologica, 1981 Heterodera mediterranea n. sp. found on Pistacia lentiscus roots in southern Italy is described. This cyst-forming nematode differs from the closely related species H. carotae, H. cruciferae and H. goettingiana in having conspicuous bullae, a shorter 2nd-stage juvenile tail and hyaline tail region and by its only known host, a woody plant, Pistacia ...
A R Stone, N Vovlas
exaly +2 more sources
On the Identity of European Populations of Punctodera Punctata (Nematoda: Heteroderidae)
Nematologica, 1986Juveniles of six Punctodera punctata populations were studied, including four from Germany, one from the Netherlands and one from England. Multivariate analysis of variance showed consistent differences in body and stylet length, distance of the genital primordium and of the valve of the median bulb from the anterior end, mid-body width and the width ...
C.M. Triggs, W.M. Wouts, B. Weischer
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Revision of the Genus Meloidogyne Göldi, 1892 (Nematoda: Heteroderidae) in Europe
Nematologica, 1998The species status of the European root-knot nematodes (Meloidogyne G61di, 1892) was studied. Types of M. arenaria, M. ardenensis, M. artiellia, M. chitwoodi, M. deconincki, M. duytsi, M. exigua, M. fallax, M. gramimis, M. hapla, M. hispanica, M. incognita, M. javanica, M. kirjanovae, M. kralli, M. litoralis, M. lusitanica, M. maritima and M.
G Karssen
exaly +2 more sources
Phylogenetic classification of the family Heteroderidae (Nematoda: Tylenchida)
Systematic Parasitology, 1985The family Heteroderidae is revised. On the basis of shared, derived characters sister groups are established and arranged in a phylogenetic tree. A hypothetical, primitive ancestor for the family is defined. The genus Verutus has a large equatorial vulval slit and is considered to be the most primitive form.
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On the presence or absence of phasmids in males of Heteroderidae (Tylenchida)
Nematology, 2016Published data on the presence or absence of phasmids in males of Heteroderidae species are compiled and critically reviewed. Based mainly on results of previous SEM studies and complemented by light microscopy using DIC optics, the conclusion is drawn that male phasmids appear to be absent in all species of the genera assigned to the subfamilies ...
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Description of Globodera agulhasensis n. sp. (Nematoda: Heteroderidae) from South Africa
Nematology, 2017A new cyst nematode, herein described asGloboderaagulhasensisn. sp., was found parasitisingSenecioburchelliin the Western Cape Province, South Africa. Second-stage juveniles are characterised by a well developed stylet of 23.5 (22.5-24.8)μm with rounded to anteriorly flattened knobs.
Knoetze, Rinus +3 more
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IMPREGNATION OF HETERODERA TRIFOLII BY MALES OF H. SCHACHTII (NEMATODA: HETERODERIDAE)
Canadian Journal of Zoology, 1958A parthenogenetic nematode, Heterodera trifolii (Goffart, 1932) Raski and Hart, 1953, was impregnated by a bisexual nematode, H. schachtii Schmidt, 1871, in mixed cultures of these two cyst-forming species. No males occurred among several hundred offspring.
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PARTHENOGENESIS IN A CYST-FORMING NEMATODE, HETERODERA TRIFOLII (NEMATODA: HETERODERIDAE)
Canadian Journal of Zoology, 1958The clover cyst nematode, Heterodera trifolii (Goffart, 1932) Raski and Hart, 1953, reproduced in the absence of males. Under greenhouse conditions nematodes reared from single larvae and from mass cyst culture were diploid-parthenogenetic. During maturation only one polar body was produced. The diploid number (24 ?) of chromosomes was not reduced and
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International Journal for Parasitology, 1998
Several physico-chemical properties of the female sex pheromone of the beet cyst nematode Heterodera schachtii were elucidated. At least one component of the pheromone can be extracted from aqueous solutions with diethyl ether. However, the pheromone has a higher solubility in water, as most of the pheromone activity remained in the water fraction. Ion
J, Aumann +3 more
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Several physico-chemical properties of the female sex pheromone of the beet cyst nematode Heterodera schachtii were elucidated. At least one component of the pheromone can be extracted from aqueous solutions with diethyl ether. However, the pheromone has a higher solubility in water, as most of the pheromone activity remained in the water fraction. Ion
J, Aumann +3 more
openaire +2 more sources