Spiral nematodes of the genus Helicotylenchus are among the most ubiquitous With the exception of Helicotylenchus multicinctus, spiral nematodes are not. The damage symptoms are similar to those caused by other serious root endoparasites of the family Pratylenchidae, both on banana plants and plantains. The life cycle and mating behavior of Helicotylenchus multicinctus (Nematoda: Hoplolaimidae) were observed in vitro on excised roots of Musa cavendishii in.
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While generally considered an ectoparasite whose body remains outside of host tissue during feeding, occasionally Helicotylenchus pseudorobustus behaves as a semi-endoparasite and penetrates into the host root with its anterior body portion head region.
This report consists the first integrated identification of both nematode species based on morphometric and molecular characteristics and confirms the occurrence of these two nematodes in Greece as had been stated in earlier reports.
While Helicotylenchus pseudorobustus is a parasite of many economically important plants, it is seldom considered a major pest on most of them.
Longidoridae from Russia and other countries using rRNA genes. Vovlas N, Larizza A. Modelling pest dynamics of new crop cultivars: Studies on Longidoridae Nematoda, Dorylaimida and raspberry ringspot virus spread in some artichoke fields in Greece.
Symptoms Back to Top The symptoms of Helicotylenchus pseudorobustus are more subtle than those of certain other nematodes such as root-knot or sting nematodes. Ceratocystis paradoxa and Helicotylenchus multicinctus associated with root systems of declining bananas in the Republica Democratica de Sao Tome e Principe.
The nematodes associated with plantains in Jamaica. Plant parasitic nematodes associated with banana crop in Crete, Greece. Pago Pago, American Samoa: Helicotylenchus multicinctus on bananas: Diversity and phylogenetic within the spiral nematodes of Helicotylenchus Steiner, Tylenchida: Biology multicnictus Ecology Top of page According to the reports of Minz et al. A Longidorus species was found at a density of 1—3 specimens per cm 3 of soil.
Les bananiers aux Iles Canaries. Community analyses of nematodes associated with banana plantations in the Hooghly district, West Bengal, India. Genital apparatus composed of two symmetrical ovaries; sometimes the posterior ovary may appear reduced, but is still functional.
The female gonad primordium is 2- and 6-celled in the early third-stage juveniles and at the third molt, respectively. Esophageal glands compact, wrapped around front end of intestine; dorsal glands anterior to subventrals.
Helicotylenchus multicinctus – Wikipedia
In autumna Helicotylenchus species was found in infected roots from an outdoor banana crop at Tertsa, Crete. Nematodes of Tropical Crops. However, often their damage has not been well quantified or documented. The tail of Helicotylenchus pseudorobustus is asymmetrical and has a projection on the end. Pinochet J; Ventura O, Nematode root-rot of bananas.
Responses of seashore paspalum cultivars to sting and spiral nematodes. Field responses of bermudagrass and seashore paspalum to sting and spiral nematodes. The symptoms of Helicotylenchus pseudorobustus are more subtle than those of certain other nematodes such as root-knot or sting nematodes.
Plant Disease Reporter, 63 8: Distribution Table Top of page The distribution in this summary table helictylenchus based on all the information available. Economic Importance Back to Top While Helicotylenchus pseudorobustus is a parasite of many economically important plants, it is seldom considered a major pest on most of them. The various juvenile life stages of Helicotylenchus spp. Longidoridae in olive and a description of six new species.
After hatching, the second-stage juvenile must locate a host plant and begin feeding for further development. Michel Luc; Richard A. In some cases, Helicotylenchus pseudorobustus induces development of heilcotylenchus specialized food cell on which it feeds Vovlas and Inserra Soil solarization, or heating and insulating of the soil, can cause nematode death although heat may not penetrate deep enough to kill all nematodes. Because these symptoms could be induced by other causes, a laboratory assay conducted by a qualified diagnostic lab such as the Florida Nematode Assay Lab is required for a positive diagnosis.
The presence of males is a useful biological character to separate Helicotylenchus multicinctus from species that do not have males.
Stylet guiding tube prominent, bulbous. The nematodes can helicotylnechus 4 months without host plants, but is less resistant to desiccation than H. The species is bisexual and reproduces by cross-fertilization or amphimixis. Helicotylenchus multicinctus Cobb, Golden, Dorylaimida associated with spindle trees infected with euonymus mosaic virus in Czechoslovakia.
Helicotylenchus multicinctus (banana spiral nematode)
Bulletin of the Maryland Agricultural Experiment Station. These findings confirm the identity of the species and the intraspecific variability on several populations with different geographic origin and were within the range of the original description Muticinctus and Hooper, and other reported populations Guesmi-Mzoughi et al.
Helicotylenchus multicinctus en raices de banano en Argentina. Tylenchida Parasites of Plants and Insects, 2nd ed. This page was last edited on 22 Marchat Find articles by Pablo Castillo. Cut off diseased tissue and coat rhizome with nematicide -soaked mud e.