English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/40495
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

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

AuthorsVerdú, José R.; Numa, Catherine; Lobo, Jorge M. ; Pérez-Ramos, Ignacio Manuel
KeywordsAcorn removal
Cabañeros National Park
Deer grazing
Dietary shift
Mediterranean ecosystems
Oak recruitment
Quercus
Seed dispersal
Issue DateFeb-2011
PublisherWiley-Blackwell
Royal Entomological Society (Great Britain)
CitationEcological Entomology 36(1): 104-110 (2011)
Abstract1. 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.
Description7 páginas, 4 figuras.
Publisher version (URL)http://dx.doi.org/10.1111/j.1365-2311.2010.01252.x
URIhttp://hdl.handle.net/10261/40495
DOI10.1111/j.1365-2311.2010.01252.x
ISSN0307-6946
E-ISSN1365-2311
Appears in Collections:(IRNAS) Artículos
(MNCN) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.