Fungal Frequency and Mite Load Trends Interact with a Declining Mountain Pine Beetle Population
| Autor: | Javier E. Mercado, Shannon L. Kay, Beatriz Ortiz-Santana |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Range (biology) Population fungal biota Biology mutualist Dendroctonus 03 medical and health sciences phoretic mite Mite education education.field_of_study integumentary system Ecology fungi Forestry Biota antagonist lcsh:QK900-989 biology.organism_classification Holobiont 030104 developmental biology fungivore Fungivore lcsh:Plant ecology Mountain pine beetle |
| Zdroj: | Forests Volume 9 Issue 8 Forests, Vol 9, Iss 8, p 484 (2018) |
| ISSN: | 1999-4907 |
| DOI: | 10.3390/f9080484 |
| Popis: | The mite and fungal biota associated with the mountain pine beetle (MPB) (Dendroctonus ponderosae Hopk.) may not be stable throughout an irruptive event. In congeneric beetles, variations in the frequency of their associated organisms affect population trends and similar effects may occur in MPB. We studied fungi and mite trends in a declining irruptive MPB population as it attacked three different pine hosts in the Colorado Front Range. During the study, we found two new associates including one biologically relevant mite and one beneficial blue-stain fungus. Fungi hyperphoretic on mites were also documented. This included beneficial and potentially detrimental species to the MPB. The frequency of several organisms varied between some years or pine hosts but not within male or female beetles. A large increase of Trichouropoda sp. and T. ips mites trended inversely with the declining beetle population, while a decrease in the beneficial blue-stain fungi trended similarly to the declining beetle population. We discuss the interactions and potential effects of phoretic biota in relation to (1) the MPB associates&rsquo population trends, (2) the MPB incursions into cooler areas, and (3) the redundancy of blue-stain fungi carried by the MPB holobiont. These findings increase our knowledge of the mechanisms that influence MPB populations. |
| Databáze: | OpenAIRE |
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