Bark Beetles Control in Forests of Northern Spain

Quantitative Association of Bark Beetles with Pitch Canker Fungus and Effects of Verbenone on Their Semiochemical Communication in Monterey Pine Forests in Northern Spain

Environmental Entomology ◽

10.1093/ee/36.4.743 ◽

2007 ◽

Vol 36 (4) ◽

pp. 743-750 ◽

Cited By ~ 16

Author(s):

Pedro Romón ◽

Juan Carlos Iturrondobeitia ◽

Ken Gibson ◽

B. Staffan Lindgren ◽

Arturo Goldarazena

Keyword(s):

Bark Beetles ◽

Pine Forests ◽

Pitch Canker ◽

Northern Spain ◽

Monterey Pine

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Quantitative Association of Bark Beetles with Pitch Canker Fungus and Effects of Verbenone on Their Semiochemical Communication in Monterey Pine Forests in Northern Spain

Environmental Entomology ◽

10.1603/0046-225x(2007)36[743:qaobbw]2.0.co;2 ◽

2007 ◽

Vol 36 (4) ◽

pp. 743-750 ◽

Cited By ~ 20

Author(s):

Pedro Romón ◽

Juan Carlos Iturrondobeitia ◽

Ken Gibson ◽

B. Staffan Lindgren ◽

Arturo Goldarazena

Keyword(s):

Bark Beetles ◽

Pine Forests ◽

Pitch Canker ◽

Northern Spain ◽

Monterey Pine

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Ophiostoma species (Ascomycetes: Ophiostomatales) associated with bark beetles (Coleoptera: Scolytinae) colonizing Pinus radiata in northern Spain

Canadian Journal of Microbiology ◽

10.1139/w07-001 ◽

2007 ◽

Vol 53 (6) ◽

pp. 756-767 ◽

Cited By ~ 50

Author(s):

Pedro Romón ◽

XuDong Zhou ◽

Juan Carlos Iturrondobeitia ◽

Michael J. Wingfield ◽

Arturo Goldarazena

Keyword(s):

Bark Beetle ◽

Pinus Radiata ◽

Bark Beetles ◽

Basque Country ◽

Beetle Species ◽

Northern Spain ◽

Ophiostoma Piceae ◽

Resource Overlap ◽

Colonization Patterns ◽

Fungal Associates

Bark beetles (Coleoptera: Scolytinae) are known to be associated with fungi, especially species of Ophiostoma sensu lato and Ceratocystis . However, very little is known about these fungi in Spain. In this study, we examined the fungi associated with 13 bark beetle species and one weevil (Coleoptera: Entiminae) infesting Pinus radiata in the Basque Country of northern Spain. This study included an examination of 1323 bark beetles or their galleries in P. radiata. Isolations yielded a total of 920 cultures, which included 16 species of Ophiostoma sensu lato or their asexual states. These 16 species included 69 associations between fungi and bark beetles and weevils that have not previously been recorded. The most commonly encountered fungal associates of the bark beetles were Ophiostoma ips , Leptographium guttulatum , Ophiostoma stenoceras , and Ophiostoma piceae . In most cases, the niche of colonization had a significant effect on the abundance and composition of colonizing fungi. This confirms that resource overlap between species is reduced by partial spatial segregation. Interaction between niche and time seldom had a significant effect, which suggests that spatial colonization patterns are rarely flexible throughout timber degradation. The differences in common associates among the bark beetle species could be linked to the different niches that these beetles occupy.

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Fungal Communities Associated with Bark Beetles in Pinus radiata Plantations in Northern Spain Affected by Pine Pitch Canker, with Special Focus on Fusarium Species

Forests ◽

10.3390/f9110698 ◽

2018 ◽

Vol 9 (11) ◽

pp. 698 ◽

Cited By ~ 6

Author(s):

Diana Bezos ◽

Pablo Martínez-Álvarez ◽

Antonio Sanz-Ros ◽

Jorge Martín-García ◽

M. Fernandez ◽

...

Keyword(s):

Bark Beetle ◽

Pinus Radiata ◽

Bark Beetles ◽

Fusarium Species ◽

Pathogenic Fungi ◽

Fungal Communities ◽

Special Focus ◽

Pitch Canker ◽

Fusarium Circinatum ◽

Northern Spain

Fusarium spp., as well as other endophytic or pathogenic fungi that form communities, have been reported to be phoretically associated with bark beetles (Coleoptera; Scolytinae) worldwide. This applies to Fusarium circinatum Nirenberg and O’Donnell, the causal agent of pine pitch canker (PPC), which threatens Pinus radiata D. Don plantations in northern Spain. The main objective of this study was to study the fungal communities associated with bark beetles and their galleries in stands affected by PPC, with special attention given to Fusarium species. Funnel traps and logs were placed in a P. radiata plot known to be affected by F. circinatum. The traps were baited with different attractants: four with (E)-pityol and six with ethanol and α-Pinene. In addition, fresh green shoots with Tomicus piniperda L. feeding galleries were collected from the ground in 25 P. radiata plots affected by PPC. Extracts of whole insects and gallery tissues were plated on agar medium to isolate and identify the associated fungi. A total of 24 different fungal species were isolated from the bark beetle galleries constructed in logs and shoots, while 18 were isolated from the insect exoskeletons. Ten different Fusarium species were isolated from tissue and insects. Fusarium circinatum was isolated from bark beetle exoskeletons (1.05% of the Pityophthorus pubescens Marsham specimens harboured F. circinatum) and from the galleries (3.5% of the T. piniperda feeding galleries harboured the pathogen). The findings provide information about the fungal communities associated with bark beetles in P. radiata stands in northern Spain.

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