Although cocophilus is undeniably close to other species in the genus Bursaphelenchus (and may well prove to belong to that genus), there remains some. Bursaphelenchus cocophilus. Red Ring Nematode. Synonym: Rhadinaphelenchus cocophilus. Rhadinaphelenchus was designated a junior. The red ring nematode, Bursaphelenchus cocophilus, was first described by Cobb. () as Aphelenchus cocophilus from specimens in.

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Tails of second- and third-stage larvae have conoid or sharply mucronate tips, and those of fourth-stage larvae have dimorphic tips: In longitudinal section, the reddened tissue may appear as two united bands joined in the bole forming a U-shape or full circle. Epidemiology Red ring disease in new groves generally begins by infection of a year old palm by the palm weevil, Rhynchophorus palmarumcarrying R. Nematode has a 10 day life cycle, and can migrate and survive in soil, especially moist areas, but tree to tree spread seems minimal.

These nematodes reproduce sexually and have a 10 day life cycle, and can migrate and survive in soil, especially moist areas. This is a sign of little leaf disease, a chronic disease that can lead to red ring disease.

The red ring nematode has not yet been reported from the continental U. Head, spear and oespohagus as in female. Distribution Maps Top of page You can pan and zoom the map. The red ring disease of coconuts and African oil palms is caused by the nematode Bursaphelenchus cocophilus.

As the leaves change color and dry up, they wilt and die.


Journal of Helminthology, Bursaphelenchus cocophilus nematodes infect palm trees and cause the red ring disease that is fatal to palm, coconut and other fruit trees. Chlorosis leaf discoloration first appears at the tips bursaphelecnhus the oldest leaves and spreads towards their bases.

Texas Invasive Species Institute

Controlling the vector Rhynchophorus palmarum can help reduce red ring nematode infestation. There is no putrefaction of the bud associated with R. In coconut and the palmiste palms the nematodes are most active in the stem tissue except in the very necrotic regions.

New taxa are described frequently. Chemical and behavioral ecology of palm weevils Curculionidae: Two important cases of nematode infestation in Surinam. Bursa or caudal alae terminal, prominent in dorsal or ventral view not easily detectable in lateral view as it does bursaphelendhus project beyond tail contour with finely striated margins, enveloping distal 0.

There are two pairs of distinct ventro-submedian papillae near base of bursa and a pre-anal pair, about 0. Detection and Inspection Top of page The stem of the coconut needs to be examined either by cutting through, or by taking a sample from the living tree.

However, the outward yellow appearance of the nematode infection cocoohilus sometimes indistinguishable from those of trees growing under conditions of poor drainage or during intense bursaphflenchus The name Red Ring Disease comes from the internal lesions these nematodes cause and they appear as an orange to brick-red colored ring, cm wide, and at a distance of cm from the periphery.

More information about modern web browsers can be found at http: Bailliere Tindall and Cox. Species involved include bark beetlesweevilsflat-faced longhorn beetles such as sawyer beetlesand soil-nesting bees. In coconut tissues, R. Males have seven papillae in the tail region, distinct spicules, and cocpohilus shaped as a spade.


Postvulval uterine sac elongate, extending to about 0. Nematode parasites of coconut and other palms.

In other projects Wikispecies. Giblin-Davis RM, et al.

Bursaphelenchus cocophilus – Wikipedia

Although Bursaphelenchus cocophilus and Rhynchophorus palmarum are not found in Florida, some other potential beetle vectors of the red ring nematode – Metamasius hemipterus and Rhynchophorus cruentatus – are common in Florida.

Guard baskets are cylindrical, 1 m high and bursapgelenchus. Agricultura y Ganaderia Tropical, Peru, 1: Bursaphelenchus cocophilus causes red ring disease of palms.

This can be modified by actually macerating the diseased tissue cocopuilus a blender in order to liberate more lethargic nematodes. There is a serious economic threat if the red ring disease comes to the United States; especially since it could then be vectored by native Rhincophorus cruentatus. The following modification was devised by Schuilling and Van Dinther Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

It is also identified in literature with an alternative scientific name Rhadinaphelenchus cocophilus. West Indies, South and Central America.