Scolytinae and dendroctonus mexicanus hopkins is supported by biological and morphological data. Biochemical evidence that dendroctonus frontalis consists. Semiochemicals of dendroctonus mexicanus, the mexican pine beetle. Several species are important forest pests, capable of reaching epidemic levels. Analysis of the mtdna sequences of 173 individuals from 25 mexican populations allowed to us identify 53. Biosystematics of the dendroctonus frontalis coleoptera.
Genetics genetic structure of dendroctonus mexicanus. We report biochemical investigations relevant to the taxonomic status and semiochemistry of two distinct morphotypes of d. Media in category dendroctonus micans the following 21 files are in this category, out of 21 total. The more aggressive species can kill healthy trees when attack densities reach sufficient numbers to overcome host defenses seybold et al. In this video, we created simple steps how to how to download and install free pdf reader. Endemic dendroctonus ponderosae are often found inhabiting weakened lodgepole pine pinus contorta var. Discrimination of odors associated with conspecific and. All structured data from the file and property namespaces is available under the creative commons cc0 license. We use pyrosequencing to characterize the gut bacterial. Recently, two apparent morphological variants of this species were discovered occurring syntopically in central america and southern mexico. Maintenance of endemic dendroctonus ponderosae populations. Dendroctonus adjunctus pinus maximinoi unknown 0 armendariz, f. Files are available under licenses specified on their description page.
Introduction b ark beetles of the genera dendroctonus and ips coleoptera. Read pdf files right in your browser the pdf download extension. Peeling off a portion of infested bark to reveal the winding pattern of the beetle galleries tunnels chewed by adults and larvae is a good way to identify individual beetle species. Pdf new characters and redescription of dendroctonus. It includes several species notorious for destroying trees in the forests of north america. This bark beetle cannot be confidently distinguished from its sibling species dendroctonus frontalis. Review of the geographical distribution of dendroctonus. The mexican pine beetle xpb dendroctonus mexicanus, is recorded here for the first time as a new introduction for the united states us. Sc, university of victoria, 2002 thesis submitted in partial fulfillment of the requirements for the degree of master of science in natural resources and environmental studies biology. This page was last edited on 20 december 2019, at 09. Some wind a tortuous manner, crossing and recrossing the galleries made by other pairs of beetles, while others are straight and parallel to. Scolytinae sobre unmismo hospedero article pdf available january 1995 with 60 reads how we measure reads. Phylogeography of the bark beetle dendroctonus mexicanus hopkins coleoptera. Identification of dendroctonus frontalis zimmermann and.
Generally, these species colonize and kill only trees weakened by drought, disease, or damage, thereby favoring the regeneration and succession of forests. Dendroctonus mexicanus is polyphagous within the pinus genus and has a wide geographical distribution in mexico and guatemala. Several studies have documented the microbiota associated with these bark beetles, but little is known regarding how the gut bacterial communities change across host range distribution. In this study, we examine the hypothesis that the population genetic structure of d. Scolytidae is one of the most important bark beetles in north america and causes considerable economic and ecological losses during outbreaks. We evaluated the spatial and temporal distribution of dendroctonus mexicanus populations in pinus cembroides forest in southern nuevo leon, mexico. Individuals of xpb and its sibling species, the southern pine beetle spb dendroctonus frontalis, were found infesting the same logs of chihuahua pine, pinus leiophylla var. Dendroctonus adults work in pairs, boring through the bark and then extending an egg gallery between the bark and wood. Scolytinae is a major economic pest of pines in the united states, mexico, and central america. There are also reports of the species in veracruz, oaxaca, and nuevo leon, mexico. Typically this species is found at the higher ranges of the elevations of pines in a given area. Download free pdf reader for windows now from softonic. In this study, we used climex to project the potential global distribution of d. Dendroctonus mexicanus, bark beetles, pheromones, semiochemicals.
Effect of temperature and resin on hatch of eggs of the mountain pine beetle dendroctonus ponderosae 1970. The most recent synonymies proposed for this group, d. Billings texas forest service, lufkin, texas, jaime e. New characters and redescription of dendroctonus vitei. Dendroctonus mexicanus left and dendroctonus vitei right adults, respectively. Download pdf download for windows now from softonic.
Red turpentine beetle and western pine beetle adults usually pack about 60% of their egglaying galleries with a sawdustlike boring dust called frass, whereas. Ancient books all rare collections of codices maya codices singular codex are folding books stemming from the precolumbian maya civilization, written in maya hieroglyphic script on mesoamerican bark cloth, made from the inner bark of certain trees, the main being the wild fig tree or amate ficus glabrata. Maintenance of endemic dendroctonus ponderosae populations through interactions with a secondary bark beetle, pseudips mexicanus gregory david smith b. Molecular phylogenetics andevolution 49 2008930940 phylogeography of the bark beetle dendroctonus mexicanus hopkins coleoptera. Two species within dendroctonus frontalis coleoptera. For example, increased body size, elaborations of the epistomal process, a fivesegmented antennal funicle, and absence of a broad impression on the frons of the male appear to be specializations in dendroctonus. Phylogeography of the bark beetle dendroctonus mexicanus. Its name is particularly suitable dendro tree, tonus destroyer for a group that contains most of the major coniferkilling bark beetles in the world. Most occur on conifers in north and central america. Phenetic and phylogenetic relationships among ten species. Interactions between the two species have not been elucidated, so three studies were conducted.
Numbers in parentheses after each host family, genus, or collection method are the number of distinct collection events in the database for that host or method. However, environmental and biological factors can promote population. The morphology of sternite viii as well as that of the spermatheca of the females of dendroctonus frontalis zimmermann and d. Although resin terpenoids may provide the compounds implicated in aggregation, all bark beetles feeding on conifers would benefit from a strategy to overcome the phenolic compounds defending the most nutritious. However, the differentiation of these species has been extremely dif. The taxonomic status of dendroctonus vitei wood coleoptera. Some morphological changes of the reproductive organs during the adult life cycle are also noted. The ability of several members of the genus to develop outbreaks and the strong response of several species to.
Response of dendroctonus mexicanus hopkins to two optical isomers of verbenone. Species of the genus dendroctonus erichson, 1836 are among the most important agents affecting the ecology and health of conifer forests in the northern hemisphere. Dendroctonus mexicanus pdf new pdf download service. A moderate pest risk potential was assigned to nine other organisms or groups of organisms including. Dendroctonus bark beetles are a worldwide significant pest of conifers. This genus comprises 20 species found in north and central america, and eurasia.
Dendroctonus bark beetles comprise 20 taxonomically recognized species, which are one of the most destructive pine forest pests in north and central america, and eurasia. Forests free fulltext climate change impacts on the. The validity of dendroctonus frontalis zimmerman, d. The distribution of this pest species is likely to be altered by climate change, which may threaten currently unaffected areas.
Dendroctonus erichson is a relatively small genus, but one with a disproportionately large impact on coniferous forests. Dendroctonus frontalis zimmermann is considered one of the most important economic and ecological forest pests in the united states, mexico, and central america. Scolytinae are the principal pests of coniferous forests. Pdf identification of dendroctonus frontalis zimmermann. The morphology and functions of the reproductive systems. The main characteristic of sternite viii is the shape and sclerotization of their central ridge, more sclerotized and. Revealing the gut bacteriome of dendroctonus bark beetles. Here we listed some of the best pdf readers for windows, which can help you to view your pdf files. The genus dendroctonus consists of 19 species, worldwide. Pseudips mexicanus hopkins is a secondary bark beetle native to western north and central america that attacks most species of pine pinus l. Open, download, or view adobe acrobat files as pdf or html files in your browser. It includes several species notorious for destroying trees in. Pest risk assessment of the importation into the united.
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