| characterisation of ophiostoma species associated with pine bark beetles from mexico, including o. pulvinisporum sp. nov. | bark beetles (coleoptera: scolytidae) are common vectors of ophiostoma species. these fungi include primary tree pathogens and important sapstain agents. in mexico, ips calligraphus and dendroctonus mexicanus occur on many species of pine. pinus maximinoi and p. pseudostrobus are the hosts of both species of insects. little research has been done on ophiostomatoid fungi associated with pine bark beetles in mexico. we recently obtained specimens of these bark beetles and their galleries from mexi ... | 2004 | 15323252 |
| phylogeography of the bark beetle dendroctonus mexicanus hopkins (coleoptera: curculionidae: scolytinae). | dendroctonus mexicanus is polyphagous within the pinus genus and has a wide geographical distribution in mexico and guatemala. we examined the pattern of genetic variation across the range of this species to explore its demographic history and its phylogeographic pattern. analysis of the mtdna sequences of 173 individuals from 25 mexican populations allowed to us identify 53 geographically structured haplotypes. high haplotype and low nucleotide diversities and tajima's d indicate that d. mexica ... | 2008 | 18824110 |
| modeling the impacts of two bark beetle species under a warming climate in the southwestern usa: ecological and economic consequences. | predicted climate warming is expected to have profound effects on bark beetle population dynamics in the southwestern united states. temperature-mediated effects may include increases in developmental rates, generations per year, and changes in habitat suitability. as a result, the impacts of dendroctonus frontalis and dendroctonus mexicanus on forest resources are likely subject to amplification. to assess the implications of such change, we evaluated the generations per year of these species u ... | 2009 | 19680717 |