Nest as an extended phenotype signal of female quality in the great reed warbler

0455184 - ÚBO 2017 RIV DK eng J - Článek v odborném periodiku
Jelínek, Václav - Požgayová, Milica - Honza, Marcel - Procházka, Petr
Nest as an extended phenotype signal of female quality in the great reed warbler.
Journal of Avian Biology. Roč. 47, č. 3 (2016), s. 428-437. ISSN 0908-8857. E-ISSN 1600-048X
Grant CEP: GA AV ČR IAA600930903; GA ČR(CZ) GAP506/12/2404
Institucionální podpora: RVO:68081766
Klíčová slova: flycatcher Ficedula hypoleuca * cross-fostering experiment * male reproductive success * cuckoos Cuculus canorus * egg color * sexual selection * clutch size * Acrocephalus arundinaceus * functional significance * Pygoscelis antarctica
Kód oboru RIV: EG - Zoologie
Impakt faktor: 2.228, rok: 2016

Extended phenotypes with signalling function are mostly restricted to animal taxa that use construction behaviour during courtship displays. However, they can be used also as post-mating signals of mate quality, allowing individuals to obtain reliable information about their partners. Nest size may have such a signalling function and a lot of indirect evidence supports this view. However, direct evidence based on an experimental approach is still widely missing. Here we test the role of nest size in post-mating signalling of mate quality in the great reed warbler Acrocephalus arundinaceus, a passerine with female-restricted nest-building behaviour. Based on observational data, clutch size, nestling weight, brood size and fledglings' propensity to return to their natal site positively correlated with nest size. Moreover, we experimentally enlarged great reed warbler nests to investigate whether this manipulation affects male investment in feeding. We found that males fed their nestlings significantly more intensively on enlarged nests than those on control nests. This suggests that nest size in this species serves as a signal of female quality or willingness to invest in reproduction and that it pays males to enhance their feeding effort according to this signal. Thus, we provide convincing evidence that animal communication takes place through the extended phenotypes and that post-mating signalling of quality is not restricted only to males, but may function equally well in females.
Trvalý link: http://hdl.handle.net/11104/0255826