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PhD Studentin

Sabine Konzmann

Gebäude: 26.13
Etage/Raum: U1.41
Tel.: +49 211 81-13058

Research interests

  • Floral filters
  • Manipulation of flower visitors
  • Plant-insect interactions
  • Pollen dilemma
  • Pollination biology


  • Since 10/2016 PhD student at the Institute of Sensory Ecology, Heinrich-Heine-University Düsseldorf, Germany
  • 2010-2011 Diploma at the Heinrich-Heine-University Düsseldorf, Germany; thesis: Experimental studies regarding the evaluation of pollen and nectar rewards by workers of the buff-tailed bumblebee (Bombus terrestris)
  • 1987 born in Wuppertal, Germany

Research project

Fine-tuned floral filters of melittophilous flowers exclude specific bees

Plant-pollinator mutualism is based on trading floral resources for pollination service but faces a conflict of interest between the plants producing pollen as a reproductive unit for the purpose of pollination and the bees collecting it efficiently to provide sustenance for their larvae.

My research focuses on floral adaptations that represent a problem-solving approach to the pollen dilemma: (1) Why are corbiculate bees unable to collect spiny pollen grains? Do spiny pollen grains of the Malvaceae and other plant families discourage pollen foragers, but not nectar foragers which are efficient pollinators? What causes the inability to store spiny pollen grains in the corbiculae? (2) Are pollen- and stamen-mimicking structures – as seen in Iris germanica and Verbascum spec. – inducing grooming of specific body parts of bees while fertile pollen is placed on a different part of the body unperceivedly, and thus escaping to be collected or discarded? (3) Do certain floral mechanisms, e.g. the keel blossoms of Colutea, cause selection of potential flower visitors and promote visits of species that efficiently transfer pollen? Do the stigmas of Colutea flowers gain access to scopal pollen of megachilid bees? Our aim is to find out whether these floral filters increase the chances of pollination, consequently solving the pollen dilemma.


Lunau K, Konzmann S, Bossems J, Harpke D (2016) A matter of contrast: Yellow flower colour constrains style length in Crocus species. PLoS ONE 11(4): e0154728.

Konzmann S, Lunau K (2014) Divergent Rules for Pollen and Nectar Foraging Bumblebees – A Laboratory Study with Artificial Flowers Offering Diluted Nectar Substitute and Pollen Surrogate. PLoS ONE 9(3): e91900.

Konzmann S, Lunau K (2013) Pollen oder Nektar? Spezialisierung beim Sammelverhalten fouragierender Hummeln (Bombus terrestris) im Labor. Entomologie heute 25: 137-145.

Conference contributions

Konzmann S, Lunau K (2011) Nektar oder Pollen? Verhaltensentscheidungen fouragierender Hummeln an künstlichen Blumenwiesen. Talk at the 24. Westdeutscher Entomologentag in Düsseldorf, Germany.

Verantwortlich für den Inhalt: E-Mail sendenProf. Dr. Klaus Lunau