Diversity of Diptera families that pollinate Ceropegia (Apocynaceae) trap flowers: An update in light of new data and phylogenetic analyses.

Ollerton, J., Dötterl, S., Ghorpadé, K., Heiduk, A., Liede-Schumann, S., Masinde, S., Meve, U., Peter, C.I., Prieto-Benítez, S., Punekar, S., Thulin, M. and Whittington, A. E., 2017. Diversity of Diptera families that pollinate Ceropegia (Apocynaceae) trap flowers: An update in light of new data and phylogenetic analyses. Flora: Morphology, Distribution, Functional Ecology of Plants, 234, 233 - 244.

Full text available as:

[img] PDF
Ollerton et al 2017 Ceropegia - Flora - ACCEPTED MANUSCRIPT.pdf - Accepted Version
Restricted to Repository staff only until 27 July 2018.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

917kB

DOI: 10.1016/j.flora.2017.07.013

Abstract

Pollination by flies (Diptera) has been important to the diversification and ecology of the flowering plants, but is poorly understood in contrast to pollination by other groups such as bees, butterflies and birds. Within the Apocynaceae the genera Ceropegia and Riocreuxia temporarily trap flies, releasing them after a fixed, species-specific period of time, during which pollination and/or pollen removal occurs. This “trap flower” pollination system shows convergent evolution with unrelated species in other families and fascinated Stefan Vogel for much of his career, leading to ground-breaking work on floral function in Ceropegia (Apocynaceae). In this new study we extend the work of the latest broad analysis published by some of the authors (Ollerton et al., 2009 − Annals of Botany). This incorporates previously unpublished data from India and Africa, as well as recently published information, on the diversity of po llinators exploited by Ceropegia. The analyses are based on a more accurate phylogenetic understanding of the relationships between the major groups, and significantly widens the biogeographic scope of our understanding of fly pollination within Ceropegia. Information about the pollinators of 69 taxa (species, subspecies and natural varieties) of Ceropegia is now available. Twenty five families of Diptera are known to visit the flowers of Ceropegia, of which sixteen are confirmed as pollinators. Most taxa are pollinated by species from a single family. Overall, there were no major biogeographic differences in the types of Diptera that were used in particular regions, though some subtle differences were apparent. Likewise there were no differences between the two major clades of Ceropegia, but clear differences when comparing the range of Diptera exploited by Ceropegia with that of the stapeliads. This clade, one of the largest in the Asclepiadoideae, is a fascinating example of a species radiation driven by an apparently relatively uniform set of pollinators.

Item Type:Article
ISSN:0367-2530
Uncontrolled Keywords:Apocynaceae; Asclepiadoideae; Ceropegia; Diptera; Flower evolution; Pollination; Specialisation; Ceropegieae-Stapeliinae
Group:Faculty of Science & Technology
ID Code:29675
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:11 Sep 2017 10:59
Last Modified:11 Sep 2017 10:59

Downloads

Downloads per month over past year

More statistics for this item...
Repository Staff Only -