English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/13992
Título

Geographic distribution of suitable hosts explains the evolution of specialized gentes in the European cuckoo Cuculus canorus

AutorSoler, Juan José ; Martín-Vivaldi, Manuel; Møller, Anders Pape
Palabras claveSuitable hosts
European cuckoo
Cuculus canorus
Fecha de publicación30-abr-2009
EditorBioMed Central
CitaciónBMC Evolutionary Biology 2009, 9:88
Resumen[Background] Several types of selective forces can act to promote parasite specialization. Parasites might specialize on some suitable hosts at the cost of decreasing effectiveness when exploiting other species of hosts, and specialization can be more easily selected for in hosts that the parasites will easily find. Thus demographic characteristics of suitable hosts such as population density and its spatial consistency could be key factors predicting probability of parasite specialization and speciation. Here, we explore this hypothesis by studying the relationship between occurence of specialized races of the European cuckoo (Cuculus canorus) (i.e. gentes) and mean and coefficient of variation in population density estimated for 12 different European regions.
[Results] The results were in accordance with the hypothesis because specialized cuckoo egg morphs were more common in suitable hosts with high population density and low variation in population density at the level of host species or genera.
[Conclusion] We have presented evidence suggesting that population density and homogeneity of geographic distribution of hosts explain, at least partly, the evolution of specialized egg-morphs of the European cuckoo. These results are consistent with the hypothesis that resource (i.e., host) predictability explains the evolution of host races and species of parasites.
Descripción10 pages, 3 figures, 2 tables
Versión del editorhttp://dx.doi.org/10.1186/1471-2148-9-88
URIhttp://hdl.handle.net/10261/13992
DOI10.1186/1471-2148-9-88
ISSN1471-2148
Aparece en las colecciones: (EEZA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
1471-2148-9-88.pdf454,53 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.