Effect of blue-stain fungi on the number of Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae) carried by Monochamus alternatus (Coleoptera: Cerambycidae)

Maehara, Noritoshi; Hata, Kunihiko; Futai, Kazuyoshi

doi:10.1163/1568541054879557

Cited by 33 publications

(33 citation statements)

References 8 publications

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“…The more PWNs that aggregate around the PC of M. alternatus in wilt-killed pines seems to increase the numbers of PWNs carried by the beetles which emerged from the PC (Maehara et al, 2005). Kobayashi et al (1974Kobayashi et al ( , 1975, Fukushige (1991) and Maehara and Futai (2000) reported that the blue-stain fungi which prevailed around PC would serve as food for PWN.…”

Section: Discussionmentioning

confidence: 97%

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Seasonal changes in the nematode fauna in pine trees killed by the pinewood nematode, Bursaphelenchus xylophilus

2006

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The seasonal changes in the number of free-living nematodes and the pinewood nematode (PWN), Bursaphelenchus xylophilus, in 15-year-old Japanese black pine (Pinus thunbergii) trees killed by the PWN were determined. Fifteen species of nematodes were isolated, i.e. one species, each of Mononchida and Plectidae, two species, each of Monhisterida, Rhabditida and Tylenchida, three species of Bursaphelenchus including the PWN, and four species of Diplogasterida. The PWN and one species of Diplogasterida were the most prevalent nematodes isolated. The numbers of PWNs decreased from August to December, 2004, but then increased in February, 2005, then decreased again until June, 2005. During the experimental period the population changes of the Diplogasterida nematode mimicked those of the PWN, however, correlations between the numbers of the two nematodes varied considerably both among trees and seasons. Both the PWN and the Diplogasterida nematode were more abundant around the pupal chambers of the vector beetle, Monochamus alternatus, than elsewhere in the tree wood. Jpn. J. Nematol. 36 (2), 87-100 (2006).

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Section: Discussionmentioning

confidence: 97%

“…The profuse growth of blue stain fungi on the walls of M. alternatus PC serve as a food source for PWNs which proliferate and aggregate in the chambers. Thus, the beetles that emerged from the chambers acquire many PWNs both externally and internally (Maehara et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Seasonal changes in the nematode fauna in pine trees killed by the pinewood nematode, Bursaphelenchus xylophilus

2006

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“…However, other factors are also certainly involved, such as differences in site locations and host trees, and possibly associated fungi. For B. xylophilus, intense blue-stain on the pupal chamber walls of M. alternatus increased the number of pinewood nematodes [20].…”

Section: Discussionmentioning

confidence: 98%

“…Factors affecting the number of nematodes transmitted to trees by beetles can certainly interfere, for example through initial nematode load and longevity of insect vector, which can themselves depend on humidity and fungal flora in the beetle galleries, as shown for B. xylophilus [19,20,36,40]. The local abundance of the main vector also certainly plays a role in the intensity of infestation by B. mucronatus since, when considering the localities where B. mucronatus was found in our results, the number of wood samples containing B. mucronatus was directly related to the number of M. galloprovincialis emergence holes.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of Bursaphelenchus mucronatus (Nematoda; Aphelenchoididae) in France and association with Monochamus galloprovincialis (Coleoptera: Cerambycidae)

et al. 2008

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-As a consequence of the recent introduction of the pine wood nematode Bursaphelenchus xylophilus in Portugal, nematodes of the genus Bursaphelenchus were looked for in various French pine forests, in trees attacked by Monochamus galloprovincialis, the vector insect of B. xylophilus, and in the insects themselves. Trap trees were felled in 12 localities distributed all over the country. Nematodes were extracted from transversal stem discs; insects emerging from the trap trees were studied.

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“…In addition, O. minus has been shown as one of the most virulent ophiostomatoid fungi on pines (Masuya et al, 2003). This fungus was associated with an important decline of Pinus sylvestris in France (Piou & Lieutier, 1989) and recently related with important diseases like these caused by Dendroctonus frontalis (the Southern Pine Beetle) in North America (Six & Klepzig, 2004) or by the pine wood nematode pathogen Bursaphelenchus xylophilus (Maehara et al, 2005).…”

Section: Fungal Isolation and Identificationmentioning

confidence: 99%

Ophiostomatoid fungi associated with declined Pinus pinaster stands in Spain

Álvarez

Fernández

2015

For. syst.

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Aim of study: We studied the presence of fungi and distribution patterns in relation to the health status of declining Pinus pinaster trees.Area of study: Trees in two declining stands in Central Spain were allotted to three declining classes...Material and Methods: Trees in two declining stands in Central Spain were allotted to three declining classes (healthy, declining and recently dead) and 3 trees of each class were felled in each stand. Wood slides (phloem and xylem) were taken at six positions along the trees and samples collected from fungal identification.Main results: A total of 21 fungal taxa were isolated and identified; eleven of these species belonged to the Ophiostomatoid group. Ophiostoma minus was the most frequently isolated fungus and was identified in 22% of the samples, mainly associated to dead and diseased trees.Research highlights: Together these results suggest a putative association of O. minor with the decline in this area, and thus we suggest paying more attention to this fungus as a potential agent of decline in P. pinaster stands.Key words: Ophiostomatoid fungi; forest pathology; bluestain fungi; multivariate analyses.Abbreviations: UTM: Universal Transverse Mercator coordinate system; MEA: Malt Extract Agar; DNA: Deoxyribonucleid acid; ITS: Internal Transcribed Spacer; BLAST: Basic Local Alignment Search Tool; CCA: Canonical Correspondence Analyses; PWN: Pine Wood Nematode.

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Effect of blue-stain fungi on the number of Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae) carried by Monochamus alternatus (Coleoptera: Cerambycidae)

Cited by 33 publications

References 8 publications

Seasonal changes in the nematode fauna in pine trees killed by the pinewood nematode, Bursaphelenchus xylophilus

Seasonal changes in the nematode fauna in pine trees killed by the pinewood nematode, Bursaphelenchus xylophilus

Occurrence of Bursaphelenchus mucronatus (Nematoda; Aphelenchoididae) in France and association with Monochamus galloprovincialis (Coleoptera: Cerambycidae)

Ophiostomatoid fungi associated with declined Pinus pinaster stands in Spain

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