RT Journal Article
T1 High frequency of social polygyny reveals little costs for females in a songbird
A1 Santoro, Simone
A1 Fernández Díaz, Pilar
A1 Canal, David
A1 Camacho, Carlos
A1 Garamszegi, László Z.
A1 Martínez Padilla, Jesús
A1 Potti, Jaime
AB Mating system theory predicts that social polygyny—when one male forms pair bonds withtwo females—may evolve by female choice in species with biparental care. Females will accepta polygynous male if the beneft of mating with a male providing high-quality genes or rearingresources outweighs the cost of sharing mate assistance in parental care. Based on this rationale, wehypothesise that the population frequency of social polygyny (FSP) varies due to changes in matesharing costs caused by changing environmental conditions. We predicted that: (1) polygamousfemales (i.e. mated with a polygynous male) pay a survival cost compared to monogamous females;(2) FSP would be higher in years with better rearing conditions and (3) the diference in survival ratesbetween monogamous and polygamous females would be small following years with higher FSP. Wetested these predictions using regression and multistate analyses of capture-recapture data of piedfycatchers, Ficedula hypoleuca, in central Spain collected over 26 years (1990–2016). Monogamousfemales had a higher mean survival rate than polygamous females (prediction 1), but there was nodiference in survival between polygynous and monogamous males. In addition, FSP was positivelyassociated with annual reproductive success (a proxy of the quality of rearing conditions—prediction2). Finally, following years with high FSP, the survival of polygamous females was similar to that ofmonogamous females (prediction 3), while the chance of breeding in a polygamous state for 2 yearsin a row increased for both males and females. Our fndings suggest that fuctuating environmentalconditions may be a necessary but neglected aspect of understanding social polygyny mechanisms
PB Springer
SN 2045-2322 (electrónico)
YR 2022
FD 2022-01
LK http://hdl.handle.net/10272/21181
UL http://hdl.handle.net/10272/21181
LA eng
NO Santoro, S., Fernández-Díaz, P., Canal, D., Camacho, C., Garamszegi, L. Z., Martínez-Padilla, J., & Potti, J. (2022). High frequency of social polygyny reveals little costs for females in a songbird. In Scientific Reports (Vol. 12, Issue 1). Springer Science and Business Media LLC. https://doi.org/10.1038/s41598-021-04423-0
NO We thank all those contributing to feld data collection. We were supported by projects CGL2014-55969-P (PI:F. Valera) and CGL2015-70639-P (PI: L.Z. Garamszegi), awarded by the Spanish Ministry of Economy andCompetitiveness; and by project K-129215 from the Hungarian National Research, Development and InnovationOfce. S.S. has been supported by a JdC contract by the Spanish MECD (FJCI-2015-24579). J.M-P. was supportedby the ARAID foundation. LZG was supported by the National Research, Development and Innovation Ofce(NKFIH) grant nr. K-139992
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026