Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Acorn preference under field and laboratory conditions by two flightless Iberian dung beetle species (Thorectes baraudi and Jekelius nitidus): implications for recruitment and management of oak forests in central Spain
Verdú, J.R.; Numa, C.; Lobo, J.M.; Pérez-Ramos, I.M. (2010). Acorn preference under field and laboratory conditions by two flightless Iberian dung beetle species (Thorectes baraudi and Jekelius nitidus): implications for recruitment and management of oak forests in central Spain. Ecol. Entomol. 36(1): 104-110. https://dx.doi.org/10.1111/j.1365-2311.2010.01252.x
In: Ecological Entomology. Royal Entomological Society/Wiley: Oxford. ISSN 0307-6946; e-ISSN 1365-2311
|  |
| Author keywords |
Acorn removal; Cabañeros National Park; deer grazing; dietary shift; Mediterranean ecosystems; oak recruitment; Quercus; seed dispersal |
| Auteurs | | Top |
- Verdú, J.R.
- Numa, C.
- Lobo, J.M.
- Pérez-Ramos, I.M.
|
|
|
| Abstract |
1. Recently, a mutualistic relationship has been described between some dung beetles (Thorectes lusitanicus and Mycotrupes lethroides) and oak species (Quercus suber, Q. canariensis, and Q. rubra), which could be crucial for ensuring seedling recruitment and sustaining the equilibrium of oak populations. For T. lusitanicus, a diet based on acorns during the reproductive period improved resistance to low-temperature conditions and improved ovarian development. 2. In this paper, we conducted field and laboratory experiments to investigate the interaction between two potential acorn-eating beetles, Thorectes baraudi and Jekelius nitidus, with Quercus suber. We determined the feeding preferences of both beetle species and estimated the rates of acorn manipulation by beetles according to habitat structure and several characteristics of the acorn, such as seed size and acorn infestation by weevils. 3. Results demonstrated the positive interaction between the dung beetle Thorectes baraudi and Quercus trees. Thorectes baraudi was clearly more attracted to volatiles of acorns than to dung. Jekelius nitidus, on the contrary, was either not or anecdotally attracted to acorns. On the contrary, in the case of Jekelius nitidus, the acorn attraction could be considered anecdotal or even accidental. Our field results demonstrated the acorn burying behaviour of T. baraudi in the oak forests of the Cabañeros National Park (Spain), suggesting a potential role of this beetle species as an active secondary acorn disperser. 4. This unexpected behaviour could be particularly important in Mediterranean oak forests and savannahs, where most Quercus species are strongly recruitment limited because of serious overgrazing problems. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
