Gut bacterial communities of dendroctonus valens and d. Pdf response of dendroctonus mexicanus hopkins to two. Typically this species is found at the higher ranges of the elevations of pines in a given area. New characters and redescription of dendroctonus vitei. This spread of the beetles through a pine forest can be easily followed by the changes that occur in. Dendroctonus mexicanus hopkins north and central america dendroctonus micans erichson europe and asia.
The transmexican volcanic belt tmvb is located between the neartic and neotropical regions and is a center of diversification and endemism of trees in the genus pinus l. Scolytinae and dendroctonus mexicanus hopkins is supported by biological and morphological data. In fact, death of the host is often a requirement for successful brood production. Its name is particularly apt dendro tree, tonus destroyer for a group that contains most of the major coniferkilling bark beetles in the world. Report prepared for usda forest service international programs. It includes several species notorious for destroying trees in the forests of north america. Dendroctonus mexicanus distribution has been recorded from arizona. Draft genome of the mountain pine beetle, dendroctonus. In california, coulter pine is also attacked by this aggressive beetle. The role of dendroctonus valens and its vectored fungi in the mortality of ponderosa pine. However, observations of the egggalleries constructed by d. The most recent synonymies proposed for this group, d.
Dendroctonus frontalis zimmermann, 1868 southern pine beetle, dendroctone meridional du pin. However, the differentiation of these species has been extremely dif. 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 ofthis species to explore its demographic history and its phylogeographic pattern. Correlation test between the abundance of these species was performed taken in to account the total abundance with average temperature and altitude. In this study, we examine the hypothesis that the population genetic structure of d. Pdf the bark beetle dendroctonus mesoamericanus sp. Two species within dedroctonus frontalis coleoptera. Phylogeography of the bark beetle dendroctonus mexicanus. Dendroctonus mexicanus dencmeoverview eppo global database. The main characteristic of sternite viii is the shape and sclerotization of their central ridge, more sclerotized and with better defined borders in d.
An organized suppression was not initiated until 2001, when funds and technical assistance became available. It includes several species notorious for destroying trees in. Phenetic and phylogenetic relationships among ten species. Red turpentine beetle and western pine beetle adults usually pack about 60% of their egglaying galleries with a sawdustlike boring dust called frass, whereas. Dendroctonus jeffreyi hopkins, 1909 jeffrey pine beetle. Dendroctonus definition of dendroctonus by merriamwebster. Identification of dendroctonus frontalis zimmermann and. The beetles may have as few as three generations in virginia and as many as seven generations in texas. Dendroctonus micans, the great spruce bark beetle, is a species of bark beetle native to the coniferous forests of europe and asia. Climate change, dendroctonus mexicanus hopkins, 1905, population dynamics, bark beetles, altitudinal range, forest pest. Trees attacked by dendroctonus beetles can at first be detected by reddish boring dust caught in bark flakes or crevices and around the base of the tree, or by pitch tubes that form on the bark at the mouth of the entrance tunnels, but in heavily attacked or decadent trees pitch tubes are often either missing or so small that they can be seen. The mountain pine beetle, dendroctonus ponderosae hopkins, is the most serious. Pdf given the need of diminishing the use of pesticides in natural environments, in this research it was investigated the effectivity of two.
Dendroctonus synonyms, dendroctonus pronunciation, dendroctonus translation, english dictionary definition of dendroctonus. Species of the genus dendroctonus erichson, 1836 are among the most important. In north america, species of the genus dendroctonus can be distinguished from the introduced tomicina, hylurgus latreille and tomicus latreille, and the native xylechinus chapuis, by the anterior margin of their compound eye. The genus dendroctonus consists of 19 species, worldwide. Illustrated key to species of genus dendroctonus coleoptera. Scolytinae are the principal pests of coniferous forests. The beetles burrow into the bark of spruce trees and lay eggs which develop into larvae that feed on the woody layers under the bark. Southern pine beetle, dendroctonus frontalis zimmermann, is a major native pest of pine trees in the south. Most occur on conifers in north and central america. However, the differentiation of these species has been extremely difficult.
Semiochemicals of dendroctonus mexicanus, the mexican pine beetle. From this material hopkins described dendroctonus mexicanus hopk. The mountain pine beetle, dendroctonus ponderosae hopkins, is the most serious insect pest of western north american pine forests. Pdf phylogeography of the bark beetle dendroctonus. Eggs are laid in groups along an egg gallery made by the female in the inner bark and outer sapwood. Several characteristics of dendroctonusfungus symbioses combine to make. Dendroctonus approximatus dietz, 1890 mexican pine beetle. This spread of the beetles through a pine forest can be easily followed by the changes that occur in the color of the foliage of the infested pines. A recent outbreak destroyed more than 15 million hectares of pine forests, with major environmental effects on forest health, and economic effects on the forest industry. The outbreak has in part been driven by climate change, and will contribute to increased. This insect normally breeds in slash, windfall and diseased trees, but at times the dfb becomes epidemic and kills apparently healthy trees over extensive areas.
Phylogeography of the bark beetle dendroctonus mexicanus hopkins coleoptera. The taxonomic status of dendroctonus vitei wood coleoptera. The mountain pine beetle is responsible for extensive damages in. In addition, scaffolds were merged when supported by scaffold spanning sanger. Dendroctonus brevicomis leconte, 1876 western pine beetle, dendroctone occidental du pin. 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 16 january 2020, at 02. One of the most typical examples of notorious dendroctonus species is the mountain pine beetle dendroctonus ponderosae. Coleoptera, dendroctonus, sex determination, externalcharacters. Information and translations of dendroctonus in the most comprehensive dictionary definitions resource on the web.
The mexican pine beetle xpb dendroctonus mexicanus, is recorded here for the first time as a new introduction for the united states us. Atacados por dendroctonus mexicanus hopkins timespace analysis of pinus cembroides zucc. Text is available under the creative commons attributionsharealike license. We developed a genome sequence resource for the mountain pine beetle to better understand the unique aspects of this insects biology. The beetle carries bluestain fungus grosmannia clavigera 2, a symbiont that enables the beetles to extract nutrients from the tree. The mexican pine beetle xpbdendroctonus mexicanus,is recorded. The majority of the species in this genus is capable of killing the host tree in one generation.
Consultation on the red turpentine beetle, dendroctonus valens, in shanxi province, pr china, july 17, 2001. Biosystematics of the dendroctonus frontalis coleoptera. Dendroctonus erichson is a relatively small genus 19 described species, but one with a disproportionately large impact on coniferous forests. Billings texas forest service, lufkin, texas, jaime e. Maintenance of endemic dendroctonus ponderosae populations through interactions with a secondary bark beetle, pseudips mexicanus gregory david smith b. Recently, two apparent morphological variants of this species were discovered occurring syntopically in central america and southern mexico. Dendroctonus frontalis zimmermann is considered one of the most important economic and ecological forest pests in the united states, mexico, and central america. Life cycle the duration from egg to adult stages ranges from 26 to 54 days, depending upon the season.
Country, locality, reference acronym, coordinates, and host of dendroctonus mexicanus and dendroctonus vitei specimens examined in this study. The genus includes some of the largest specimens of north american scolytinae. Dendroctonus mexicanus dencme dendroctonus micans dencmi. Country state, municipalty, and location acronym for fig. The validity of dendroctonus frontalis zimmerman, d. Western pine beetle dendroctonus brevicomis the western pine beetle wpb is a bark beetle which attacks and kills 6. The species overwinters as larvae or adults in galleries. The refseq genome records for dendroctonus ponderosae were annotated by the ncbi eukaryotic genome annotation pipeline, an automated pipeline that annotates genes, transcripts and proteins on draft and finished genome assemblies.
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. Genus dendroctonus the genus dendroctonus has over 20 species worldwide, most of which occur in north and central america, where they are considered major pests of conifer forests 1. As the eggs hatch, the minute larvae mine outward into the phloem at right angles to the main tunnel. Dendroctonus mexicanus hopkins is polyphagous within pinus species and has a continuous geographic distribution across the tmvb. In this sierra, pines are affected by the smaller mexican pine beetle, dendroctonus mexicanus, in symbiosis with woodstaining ophiostomatoid fungi that, in timber production areas, may reduce. Pdf new characters and redescription of dendroctonus. Continuing to use this website means you agree to our use of cookies. The main characteristic of sternite viii is the shape and sclerotization of their central ridge, more sclerotized and. The goods coverage index values were greater than 97% in all locations of both bark beetles table1. The only other pines on which the attack was observed were determined by prof. About europe pmc funders joining europe pmc governance roadmap outreach. All structured data from the file and property namespaces is available under the creative commons cc0 license.
Dendroctonus definition is a genus of small bark beetles that are especially destructive to mature coniferous trees and that have a large prothorax, short clubbed elbowed antennae, serrated tibiae, and spiny elytra. We do not use these to store personal information about you. Results indicate that sex determination, by means of abdominal and cephalic characters is posible with 100% confidence. 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.
Dendroctonus adjunctus pinus maximinoi unknown 0 armendariz, f. 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. Predicted climate warming is expected to have profound effects on bark beetle population dynamics in the southwestern united states. Dendroctonus ponderosae, the mountain pine beetle, is a destructive pest of pine trees in increasingly large regions of north america 1.
Genetic structure of dendroctonus mexicanus coleoptera. Modeling the impacts of two bark beetle species under a. Genetics genetic structure of dendroctonus mexicanus. Introduction b ark beetles of the genera dendroctonus and ips coleoptera. General information about dendroctonus mexicanus dencme this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. Several species are important forest pests, capable of reaching epidemic levels and killing thousands of trees. New molecular tools for dendroctonus frontalis coleoptera. As a result, the impacts of dendroctonus frontalis and dendroctonus mexicanus on forest resources are likely subject to. Analysis was carried out on 626 insects from five populations of mexico state. Dendroctonus bark beetle genera of the united states. Dendroctonus definition of dendroctonus by the free dictionary. Dfb is the most important bark beetle enemy of douglasfir throughout its range. Scott cameron international paper company, savannah, georgia.
The morphology of sternite viii as well as that of the spermatheca of the females of dendroctonus frontalis zimmermann and d. This page was last edited on 20 december 2019, at 09. Eastern larch beetle, dendroctonus simplex leconte, is a native north american bark beetle whose only important host is eastern larch, larix larcina du roi k. Although most of the species are capable of attacking and killing standing. Ncbi dendroctonus ponderosae annotation release 100. Dendroctonus mexicanus, bark beetles, pheromones, semiochemicals. Identification of dendroctonus frontalis zimmermann and d. Dendroctonus speciesgroups based on anatomy, behavior wood 1963, and cytogenetic lanier 1981 characters anatomy cytogenetics group i d. Temperaturemediated effects may include increases in developmental rates, generations per year, and changes in habitat suitability. Dendroctonus pseudotsugae scolytidae douglasfir beetle. This fragment is situated between positions 2505 and 2751 in the drosophila yakuba mitochondrial genome, and was used because exploratory alignment analysis using all sequences of dendroctonus deposited in the genbank, and a panel of 15 sequences 700 bp of d. Western pine beetle dendroctonus brevicomis nevada. Nine compounds identified from captured volatiles of the douglasfir beetle, dendroctonus pseudotsugae, the mountain pine beetle, d. Dendroctonus mexicanus pdf new pdf download service.
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