Pollinator trapping in selfing carnivorous plants, Drosera makinoi and D. toyoakensis (Droseraceae)

Pollinator trapping in selfing carnivorous plants, Drosera makinoi and D. toyoakensis (Droseraceae) Carnivorous plants use insects not only as prey, but also as pollinators. Whereas outcrossing carnivorous plants are known to avoid trapping pollinators, selfing carnivorous plants may capture the pollinators as prey. Here, we provide evidence that two selfing carnivorous plant species with short flower-trap separation, Drosera makinoi (white-colored flowers) and D. toyoakensis (pink-colored flowers), caught some major pollinator species belonging to Diptera and Hymenoptera: four out of five species in D. makinoi and one out of six species in D. toyoakensis. We also tested the function of flowers to attract pollinator or prey insects by experimentally removing Drosera flowers. Flower removal did not significantly affect the number of trapped insects. On the other hand, the removal of flowers of co-flowering neighbor plants, Eriocaulon decemflorum for D. makinoi and Lysimachia fortunei for D. toyoakensis, significantly decreased the number of trapped insects. This finding suggests an exploitative relationship between Drosera spp. and co-flowering species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ecological Research Springer Journals

Pollinator trapping in selfing carnivorous plants, Drosera makinoi and D. toyoakensis (Droseraceae)

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Publisher
Springer Journals
Copyright
Copyright © 2018 by The Ecological Society of Japan
Subject
Life Sciences; Ecology; Plant Sciences; Zoology; Evolutionary Biology; Behavioral Sciences; Forestry
ISSN
0912-3814
eISSN
1440-1703
D.O.I.
10.1007/s11284-018-1572-6
Publisher site
See Article on Publisher Site

Abstract

Carnivorous plants use insects not only as prey, but also as pollinators. Whereas outcrossing carnivorous plants are known to avoid trapping pollinators, selfing carnivorous plants may capture the pollinators as prey. Here, we provide evidence that two selfing carnivorous plant species with short flower-trap separation, Drosera makinoi (white-colored flowers) and D. toyoakensis (pink-colored flowers), caught some major pollinator species belonging to Diptera and Hymenoptera: four out of five species in D. makinoi and one out of six species in D. toyoakensis. We also tested the function of flowers to attract pollinator or prey insects by experimentally removing Drosera flowers. Flower removal did not significantly affect the number of trapped insects. On the other hand, the removal of flowers of co-flowering neighbor plants, Eriocaulon decemflorum for D. makinoi and Lysimachia fortunei for D. toyoakensis, significantly decreased the number of trapped insects. This finding suggests an exploitative relationship between Drosera spp. and co-flowering species.

Journal

Ecological ResearchSpringer Journals

Published: Feb 12, 2018

References

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