4 — Cecidologie
Hypertrophies of plant tissue, induced by chemical or mechanical signals of diverse organisms as bacteria, fungi, nematoda, mites or insects are called plant galls. Especially gall-inducing insects belonging to the Cynipidae (gall wasps), Tenthredinidae (sawflies) oder Cecidymyiidae (gall midges) are highly host specific and mostly monophageous. Therefore, the genotypic and phenotypic diversity within the host plant spectra may influence allocation and parasitation rates.
Actually, we investigate the relevance of biotic and abiotic factors on plant gall densities on two investigation systems: willows (Salix spp.) on an investigation site in the Ecological-Botanical Garden at the University of Bayreuth, as well as on European beech (Fagus sylvatica) in the biodiversity exploratory Hainich/Dün.
Within the scope of the project I-B-F, observation data from investigation sites are gained by use of a smartphone application ('DiversityMobile'), and transferred by the use of a synchronisation tool to a data repository at the IT-center at the Bavarian Natural History Collections.
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| Investigation site containing 240 plants belonging to the Salix alba/S. fragilis-hybrid complex. These plants are investigated according to their growth as well as plant gall densities. | Young gall of the sawfly Pontania proxima (Tenthredinidae, Nematinae) on the leaf blade of Crack-Willow (Salix fragilis). |
Tha gall midge Mikiola fagi (Cecidomyiidae) locally occurrs in very high densities. |
Completed Projects (with main focus on this field)
| DFG DFG GRK 678/1 Projekt 11 | Wirtsselektivität gallinduzierender Pflanzenwespen (Hymenoptera, Tenthredinidae) an Weiden (Salix spp.): die Bedeutung von Phänotyp und Genotyp im Salix alba/S. fragilis-Komplex für die Belegung mit Gallen Alexandra Kehl, Gerhard Rambold |
| DFG INST 2850/1-1 | Setting up an information network for biological research data from gathering in the field up to their sustainable storage in a primary data repository Alexandra Kehl, Gerhard Rambold |
| Z_Myk_2008-01 | Molekulare Untersuchungen an Populationen von Pontania proxima und deren Parasitoiden Stephanie Lippert, Alexandra Kehl, Gerhard Rambold |
| Z_Myk_2010-04 | Effect of forest management intensity on the interplay of bottom-up and top-down effects in a three-trophic-level interaction: galling insects on European beech (Fagus sylvatica L.) and their parasitoids in the biodiversity exploratory Hainich/Dün Alexandra Kehl, Gerhard Rambold |
| Z_Myk_2010-07 | Exploring the Interplay Between Willows, Gall-Inducing Insects, and Associated Fungi Alexandra Kehl, Anja Zigan, Derek Peršoh, Gerhard Rambold |
Completed Projects (with partial focus on this field)
| DFG RA 731/11-2 | I-B-F: Aufbau eines Informationsnetzes für biologische Forschungsdaten von der Erhebung im Feld bis zur nachhaltigen Sicherung in einem Primärdatenrepositorium Alexander Guhr, Gerhard Rambold |
| [prev.] BMBF 01LIO205 | Participation in the continous further datenbase modelling und rich client implementation of the Diversity Workbench framework components Gerhard Rambold |