English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/35973
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Dishonest begging and host manipulation by Clamator cuckoos

AuthorsRedondo, T. ; Zúñiga, Jesús M.
Issue Date2002
PublisherKluwer Academic Publishers
CitationThe Evolution of begging, competition, cooperation and communication (2002): 389-412
AbstractBrood parasites may be favoured over host nestlings due to variation in the honesty of their begging signals. Begging behaviour of great spotted cuckoo nestlings and their host magpie nestlings was recorded when controiiing food need, Cuckoo begging effort was dishonest as an indicator of nutritional need, whilst magpie begging was not. Cuckoos begged for longer and emitted more calls at a higher rate irrespective of the degree of food deprivation, although in contrast to magpies, cuckoos ate food in relation to their need. Energetic and predation costs are unlikely to account for these differences. Differences in indirect inclusive fitness costs can explain the more intensive begging by cuckoos. Magpie parents given a choice favoured larger nestlings and those begging more intensively. Cuckoos obtained more food and a larger share than magpies of a similar size. Magpies therefore received less food in the presence of a cuckoo, and cuckoos received a similar share irrespective of their size. Lack of relatedness to their magpie hosts therefore allows cuckoos to exploit a set of adaptive rules in the host parents and manipulate them into providing the latter with preferential care.
Appears in Collections:(EBD) Libros y partes de libros
Files in This Item:
File Description SizeFormat 
redondo&zuniga2002.pdf6,19 MBAdobe PDFThumbnail
Show full item record
Review this work

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