| quantitative association of bark beetles with pitch canker fungus and effects of verbenone on their semiochemical communication in monterey pine forests in northern spain. | the association between 11 species of bark beetles (coleoptera: scolytinae) and one weevil (coleoptera: entiminae) with the pitch canker fungus, fusarium circinatum nirenberg and o'donnell, was determined by crushing beetles on selective medium and histone h3 gene sequencing. pityophthorus pubescens (marsham) (25.00%), hylurgops palliatus (gyllenhal) (11.96%), ips sexdentatus (börner) (8.57%), hypothenemus eruditus westwood (7.89%), hylastes attenuatus erichson (7.40%), and orthotomicus erosus ( ... | 2007 | 17716465 |
| beauveria caledonica is a naturally occurring pathogen of forest beetles. | in new zealand, two introduced scolytid beetles, hylastes ater and hylurgus ligniperda (curculionidae: scolytinae) are pests in pine plantations. investigation of the naturally occurring pathogens of these exotic pests revealed that both are attacked by beauveria caledonica, a species originally isolated and described from soil in scotland. the isolates in new zealand were identical in morphology and conserved dna region (rdna, elongation factor alpha) sequence to isolates held in the usda-ars i ... | 2008 | 18308525 |
| association of entomopathogenic fungi with exotic bark beetles in new zealand pine plantations. | hylastes ater and hylurgus ligniperda are introduced pests of re-established pinus radiata in new zealand. both species breed under the bark of stumps in recently harvested areas. adult maturation feeding on pine seedlings planted in adjacent areas can significantly impact seedling growth, and in severe cases seedlings will die. entomopathogenic fungi are important natural mortality factors in bark beetle populations, and beauveria spp. are predominant. here, we report on the isolation of other ... | 2010 | 19669590 |
| leptographium tereforme sp. nov. and other ophiostomatales isolated from the root-feeding bark beetle hylurgus ligniperda in california. | the redhaired pine bark beetle hylurgus ligniperda (f.) is native to europe but was discovered in los angeles, california, in 2003. this root-and stump-feeding beetle is a common vector of ophiostomatales, which are potential tree pathogens or causes of blue stain of conifer sapwood. in this study ophiostomatales were isolated on a cycloheximide-amended medium from 118 adult h. ligniperda collected from infested logs of pinus halepensis and p. pinea at two sites in california. in total eight spe ... | 2010 | 20943533 |
| high-resolution dna melt-curve analysis for cost-effective mass screening of pairwise species interactions. | ecological studies of pairwise interactions are constrained by the methods available for rapid species identification of the interacting organisms. the resolution of data required to characterize species interaction networks at multiple spatio-temporal scales can be intensive, and therefore laborious and costly to collect. we explore the utility of high-resolution dna melt-curve analysis (hrm) as a rapid species identification method. an approach was developed to identify organisms at the pairwi ... | 2013 | 23875939 |