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

Kazuki Tagawa, Mikio Watanabe, Tetsukazu Yahara

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Pages (from-to)487-494
Number of pages8
JournalEcological Research
Volume33
Issue number2
DOIs
Publication statusPublished - Mar 1 2018

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Droseraceae
carnivorous plant
Drosera
carnivorous plants
autogamy
pollinating insects
selfing
pollinator
trapping
flower
flowers
deblossoming
insects
insect
Lysimachia
Eriocaulon
flowering
outcrossing
Angiospermae
traps

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

Pollinator trapping in selfing carnivorous plants, Drosera makinoi and D. toyoakensis (Droseraceae). / Tagawa, Kazuki; Watanabe, Mikio; Yahara, Tetsukazu.

In: Ecological Research, Vol. 33, No. 2, 01.03.2018, p. 487-494.

Research output: Contribution to journalArticle

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