| taxonomic re-evaluation of three related species of graphium, based on morphology, ecology and phylogeny. | two fungi associated with bark beetles, graphium pseudormiticum (described in 1994) and rhexographium fimbriisporum (described in 1995), have two micromorphological characters in common. both species produce conidia with conspicuous basal frills, and the conidia align in chains, despite being produced in slime. the association of g. pseudormiticum with the pine bark beetle, orthotomicus erosus, and the association of r. fimbriisporum with the spruce bark beetle, ips typographus, suggest ecologic ... | 2003 | 21148980 |
| boring in response to bark and phloem extracts from north american trees does not explain host acceptance behavior of orthotomicus erosus (coleoptera: scolytidae). | when invasive herbivorous insects encounter novel plant species, they must determine whether the novel plants are hosts. the mediterranean pine engraver, orthotomicus erosus (wollaston), an exotic bark beetle poised to expand its range in north america, accepts hosts after contacting the bark. to test the hypothesis that o. erosus accepts hosts on the basis of gustatory cues, we prepared bark and phloem extracts from logs of four north american tree species that we had used in previous host acce ... | 2010 | 20388300 |
| suitability of pines and other conifers as hosts for the invasive mediterranean pine engraver (coleoptera: scolytidae) in north america. | the invasive mediterranean pine engraver, orthotomicus erosus (wollaston) (coleoptera: scolytidae), was detected in north america in 2004, and it is currently distributed in the southern central valley of california. it originates from the mediterranean region, the middle east, and asia, and it reproduces on pines (pinus spp.). to identify potentially vulnerable native and adventive hosts in north america, no-choice host range tests were conducted in the laboratory on 22 conifer species. the bee ... | 2008 | 18613584 |
| 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 |
| the phylogenetic relationships of seven european ips (scolytidae, ipinae) species. | in central europe seven lps species are characterized by differences in morphology, structure of galleries, host specificity and aggressiveness. these species were analysed by allozyme markers and by sequencing 567 bp of the mitochondrial cytochrome oxidase i gene, in order to define their phylogenetic relationships. orthotomicus erosus and tomicus minor were taken as outgroup species. the data revealed high inter-specific and low intra-specific sequence divergence. plotting the observed sequenc ... | 1997 | 9272441 |