Differential pollen placement on an Old World nectar bat increases pollination efficiency

Annals of Botany
Alyssa B Stewart, Michele R Dudash

Abstract

Plant species that share pollinators are potentially subject to non-adaptive interspecific pollen transfer, resulting in reduced reproductive success. Mechanisms that increase pollination efficiency between conspecific individuals are therefore highly beneficial. Many nocturnally flowering plant species in Thailand are pollinated by the nectar bat Eonycteris spelaea (Pteropodidae). This study tested the hypothesis that plant species within a community reduce interspecific pollen movement by placing pollen on different areas of the bat's body. Using flight cage trials, pollen transfer by E. spelaea was compared between conspecific versus heterospecific flowers across four bat-pollinated plant genera. Pollen from four locations on the bat's body was also quantified to determine if pollen placement varies by plant species. It was found that E. spelaea transfers significantly more pollen between conspecific than heterospecific flowers, and that diverse floral designs produce significantly different patterns of pollen deposition on E. spelaea. In the Old World tropics, differential pollen placement is a mechanism that reduces competition among bat-pollinated plant species sharing a common pollinator.

Citations

Jul 24, 2004·Journal of Evolutionary Biology·M C CastellanosJames D Thomson
Apr 28, 2006·Evolution; International Journal of Organic Evolution·Kathleen M Kay
Dec 6, 2006·Oecologia·Jeff OllertonEllen Lamborn
Aug 23, 2007·Proceedings. Biological Sciences·Nathan Muchhala, Matthew D Potts
Mar 24, 2009·Annals of Botany·Randall J MitchellJeffrey D Karron
Jun 24, 2009·Ecological Applications : a Publication of the Ecological Society of America·Nicholas J Bax, Ronald E Thresher
Oct 1, 2009·Annals of Botany·Theodore H FlemingW John Kress
Apr 23, 2010·The American Naturalist·Nathan Muchhala, James D Thomson
Apr 5, 2011·The American Naturalist·Richard J WatermanAnton Pauw
Apr 1, 2009·American Journal of Botany·Rebecca J FlanaganJeffrey D Karron
Mar 15, 2015·Evolution; International Journal of Organic Evolution·Charles B FensterMichele R Dudash

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World Health Organization

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