Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub

    Description

    We studied blue-stain fungi (Ophiostomataceae: Ophiostomatales) of mountain pine beetle in declining epidemic populations affecting three pine species in Colorado. Using morphological and molecular characterizations, we determined the presence of the mutualist L. longiclavatum in the southern Rocky Mountains of Colorado, where it was as common as the warm temperature adapted O. montium within the insect’s specialized maxillary mycangium. The species was more prevalent than its “sibling species” G. clavigera which is the the common mycangial mutualist documented in USA populations. Findings were made during a two-year period including the warmest year on record in the state (i. e., 2012). Other studies have indicated that L. longiclavatum is more frequent in insect populations occurring in the northern Canadian Rockies diminishing in southern areas of that mountain range, suggesting latitude influences the frequency of this fungal mutualists, due to its better cool temperature tolerances. Our findings suggest Colorado isolates may have a greater tolerance of warmer temperatures than those from the north. These findings also increase our knowledge about the species distribution and the in situ conditions permissive of its occurrence in areas south of the Canadian Rockies.

    Publication Notes

    • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Mercado, Javier E.; Ortiz-Santana, Beatriz. 2018. Mountain pine beetle mutualist Leptographium longiclavatum presence in the southern Rocky Mountains during a record warm period. Sydowia. 70: 1-10.

    Cited

    Google Scholar

    Keywords

    blue-stain, mycangia, mutualist, symbiont, phytopathogen

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/56611