RECORD
Nitrogen Concentration in Mountain Pine Beetle Larvae Reflects Nitrogen Status of the Tree Host and Two Fungal Associates
- Title:
- Nitrogen Concentration in Mountain Pine Beetle Larvae Reflects Nitrogen Status of the Tree Host and Two Fungal Associates
- Creator:
- Cook, Stephen P.; Shirley, Brian M.; Zambino, Paul J.
- Date Created:
- 2010
- Description:
- Individual lodgepole pines (Pinus contorta) were fertilized with urea at nitrogen (N) inputs equivalent to 0, 315, or 630 kg/ha. Four months after application of the fertilizer, inner bark tissue N concentrations were significantly higher in the trees that had received the low dose (315 kg/ha) fertilization treatment than in the control trees; trees that had received the high-dose treatment (630 kg/ha) were intermediate and not significantly different from either of the other treatments. There was a significant positive correlation between N concentration in inner bark tissue and larval mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Curculionidae, Scolytinae). In vitro studies on synthetic growth media examined effects of temperature and N concentration on N concentration of two common fungal associates of the mountain pine beetle (Ophiostoma clavigerum and Ophiostoma montium). Increasing N concentration in growth media signiÞcantly increased fungal N concentrations in both O. clavigerum and O. montium. Furthermore, N concentration was consistently higher in O. clavigerum than in O. montium. Neither species had suficient growth at 30 degrees C, nor did O. clavigerum at 15 degrees C, to test N concentration. However, for O. montium, increasing temperatures decreased fungal N concentrations. There was no correlation between N concentration of O. clavigerum and growth temperature. Potential impacts of ingestion of the fungal species by developing mountain pine beetle larvae-infesting trees under various environmental conditions such as increasing temperatures are discussed.
- Document Type:
- Research Article
- Subjects:
- UIEF lodgepole pine pinus contorta fungal associations nitrogen inner bark tissue symbiotic fungi Dendroctonus Ophiostoma nitrogen fertilization temperature relationships forest entomology
- Location:
- UIEF
- Latitude:
- 46.869607
- Longitude:
- -116.733856
- Publisher:
- Environmental Entomology
- Department:
- Forest, Rangeland, and Fire Sciences
- Type:
- Text
Source
- Preferred Citation:
- "Nitrogen Concentration in Mountain Pine Beetle Larvae Reflects Nitrogen Status of the Tree Host and Two Fungal Associates", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0237.html
Rights
- Rights:
- In copyright, educational use permitted.
- Standardized Rights:
- http://rightsstatements.org/vocab/InC-EDU/1.0/