Anguina pacificae
Contents
Rev 05/05/2006
Anguina pacificae |
Contents |
Rev 05/05/2006 |
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Classification |
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Hosts | |
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Morphology and Anatomy |
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Life Cycle |
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Economic Importance |
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Damage |
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Distribution |
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Management |
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Feeding |
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References |
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Synonyms:
Anguina pacificae
female
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Females 1.44-2.58 mm long. C-shaped when dead. Four lines in lateral field. Tail conical to a sharp point. Stylet short (8.9-12.4 µm), esophageal glands do not appear to overlap intestine. Vulva at 82-89%. Monovarial, prodelphic ovary may have one or two flexures and extends to base of esophagus. Post-uterine sac present. Males 1.22-1.84 mm long. Caudal alae and gubernaculum present.
Anguina pacificae J2 |
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Anguina pacificae male
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Anguina pacificae was found on grasses by Larry Costello (UC farm advisor) on Poa annua in 1978. It was described by Cid del Prado Vera and Maggenti in 1984.
It is reported from central coast golf courses in San Francisco, San Mateo and Monterey Counties.
As of 2001, golf course superintendents report that individual golf courses severely affected include Pebble Beach, Cypress Point, the Olympic Club, San Francisco Golf Club, and many other prominent courses.
Damaging on golf courses, considered a serious problem by greens managers.
Endoparasite in stem galls
Poa annua L., bluegrass.
The nematode forms green galls at stem bases. Galls may contain several adults and hundreds of juveniles and eggs. It does not attack the inflorescence (and presumably does not form seed galls, which might limit its spread).
Mature galls may be filled with bacteria, which appears as a white cream. That is reminiscent of the association between Anguina spp. and Clavibacter spp. in wheat and ryegrass.
Stem and leaf distortion, stem galls.
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I need to confirm my recollection of the following:
[I think Win Hart did some work. Also, I remember Viglierchio andYamashita, Frances Wu and maybe Steve Brown doing some sampling and nematicide (?Nemacur or Furadan) trials during which they also ran into a cyst nematode in the golf courses. [I may have invented the last factoid, but there may be some reference to it in those papers by Viglierchio and Yamashita in Revue de Nematologie.]]
Cid del Prado Vera, I. and A.R. Maggenti. 1984. A new gall-forming species of Anguina Scopoli, 1777 (Nemata Anguinidae) on bluegrass, Poa annua L., from the coast of California. J. Nematol. 16:386-392.
