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Abstract Detail



Symbioses: Plant, Animal, and Microbe Interactions

Johnson, Robert L. [1], Anderson, Val J. [2], Yankee, Adam [3].

Host relationships between Arnica chamissonis Less. (Asteraceae) and fruit flies (Diptera: Tephritidae).

Capitula of Arnica chamissonis Less. are known to host eight different species of fruit flies from the family Tephritidae. Three of those species are knew host records not previously published. We report a new host record for Campiglossa snowi (Hering, Tephritis leavittensis Blanc, and Trupanea nigricornis (Coquillett) on A. chamissonisC. snowi was the only fruit fly reared from A. chamissonis from 3 different population over 5 sample years from the Kenai Peninusla, Alaska. A total of 1,114 specimens of C. snowi were reared from the flowerheads of 337 plants averaging 5 flower heads per plant. Seed damage from fly larvae ranged from an average of 0-54.8% per capitulum with an overall average of 18.3% across all years and sites. Infestation rates for individual capitula and the entire plant were 56.4% and 79.0% across all years and sites respectively. The duration of the study revealed that seed damage and corresponding fly abundance peaked around 2010 with substantially lower values in years preceding and following the peak.


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1 - Brigham Young University, Biology, 3115a MLBM, Provo, UT, 84602, USA
2 - Brigham Young University, Plant & Wildlife Science, 297 widb, Provo, UT, 84602
3 - Brigham Young University, Biology, Provo, UT

Keywords:
Arnica chamissonis
Campiglossa
seed predator.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PSB005
Abstract ID:683
Candidate for Awards:None


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