English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/143541
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

Responses of a scatter-hoarding rodent to seed morphology: links between seed choices and seed variability

AuthorsMuñoz, Alberto ; Bonal, Raúl ; Espelta, Josep Maria
KeywordsMus spretus
Quercus ilex
Holm oak
Seed caching
Small rodent
Acorn
Algerian mouse
Animal–plant interaction
Handling cost
Hoarding behaviour
Issue Date2012
PublisherElsevier
CitationAnimal Behaviour 84(6): 1435-1442 (2012)
AbstractSeed preferences of scatter-hoarding granivores may influence the evolution of seed traits in plants. However, there is little evidence linking the granivores' responses to specific seed traits to the variability of seeds in a single plant species. This information is essential for understanding how the decisions of granivores can shape plant life histories. We analysed how seed morphology (size and shape) of the Holm oak, Quercus ilex, influences seed choices of the seed-disperser, the Algerian mouse, Mus spretus. We studied the seed variability of the oak and whether the frequency of seed phenotypes matched the seed choices of the disperser. The probabilities of seed removal decreased as the seeds became larger and more bullet-shaped, so that seeds that were simultaneously large and bullet-shaped had the lowest probabilities of being dispersed. These seeds are probably refused by rodents because they impose higher handling and transport costs. The size and shape of the Holm oak seeds were highly variable between trees, but extraordinarily consistent within a single tree over different years. However, the analysis of seed variability revealed a disproportionately low frequency of large bullet-shaped phenotypes, which are those barely removed by rodents. Seed preferences of dispersers of species with high seed variability between trees can lead to differences in the chances of seeds produced by different trees being dispersed. Those seed phenotypes preferred by dispersers could make a higher contribution to the next generation, which could influence the evolution and variability of seeds in a plant species.
URIhttp://hdl.handle.net/10261/143541
DOI10.1016/j.anbehav.2012.09.011
Identifiersdoi: 10.1016/j.anbehav.2012.09.011
issn: 0003-3472
Appears in Collections:(IREC) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
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.