Onstein R. E., Baker W. J., Couvreur Thomas, Faurby S., Svenning J. C., Kissling W. D. (2017). Frugivory-related traits promote speciation of tropical palms. Nature Ecology and Evolution, 1 (12), p. 1903-1911. ISSN 2397-334X.
Titre du document
Frugivory-related traits promote speciation of tropical palms
Onstein R. E., Baker W. J., Couvreur Thomas, Faurby S., Svenning J. C., Kissling W. D.
Source
Nature Ecology and Evolution, 2017,
1 (12), p. 1903-1911 ISSN 2397-334X
Animal-mediated seed dispersal by frugivorous birds and mammals is central to the ecology and functioning of ecosystems, but whether and how frugivory-related traits have affected plant speciation remains little explored. Fruit size is directly linked to plant dispersal capacity and therefore influences gene flow and genetic divergence of plant populations. Using a global species-level phylogeny with comprehensive data on fruit sizes and plant species distributions, we test whether fruit size has affected speciation rates of palms (Arecaceae), a plant family characteristic of tropical rainforests. Globally, the results reveal that palms with small fruit sizes have increased speciation rates compared with those with large (megafaunal) fruits. Speciation of small-fruited palms is particularly high in the understory of tropical rainforests in the New World, and on islands in the Old World. This suggests that frugivory-related traits in combination with geography and the movement behaviour of frugivores can influence the speciation of fleshy-fruited plants.
Plan de classement
Sciences du monde végétal [076]
;
Sciences du monde animal [080]
;
Etudes, transformation, conservation du milieu naturel [082]
