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Abstract Detail



Recent Topics Posters

Kobayashi, Brandon [1], Martinez-Sanchez, Rubi [1], Smith, Christopher [2].

Variation in Floral Morphology and its effect on Fruit abscission in Joshua Trees (Yucca spp).

Joshua trees and Yucca moths share an unusual obligate pollination mutualism; the Yucca moths are the only pollinators of  joshua trees, however in return the moths oviposit into the flowers and their larvae consume a portion of the seeds. There are two species of Joshua trees: Yucca brevifolia and Yucca jaegeriana. T. synthetica, the moth with the longer ovipositor, primarily pollinates Yucca brevifolia the tree with the longer style. T. antithetica, the moth with shorter ovipositor, primarily pollinates Yucca jaegeriana the tree with the shorter style. In addition, there is evidence suggesting that the larger moth does not successfully rear larvae upon Joshua trees with a shorter style. Previous studies of Yucca filamentosa suggest that ovule wounding during oviposition prompts floral abscission.We hypothesize that joshua trees with the shorter style will be more prone to abscission when it comes in contact with Yucca moths containing longer ovipositors. Here, we examined whether floral anatomy, specifically style length, predicts rates of floral abscission floral abscission.


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1 - Willamette University, Department of Biology, 900 State Street, Salem, OR, 97301, USA
2 - Willamette University, Biology, 900 State Street, Department of Biology, Salem, OREGON, 97301, United States

Keywords:
Yucca
abscission
pollination
coevolution.

Presentation Type: Recent Topics Poster
Session: P
Location: Hall D/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 5:30 PM
Number: PRT028
Abstract ID:1812
Candidate for Awards:None


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