Reproductive effort and future parental competitive ability: A nest box removal experiment

Fokkema R, Ubels R, Both C, de Felici L, Tinbergen JM (2018)
ECOLOGY AND EVOLUTION 8(17): 8865-8879.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The life history trade-off between current and future reproduction is a theoretically well-established concept. However, empirical evidence for the occurrence of a fitness cost of reproduction is mixed. Evidence indicates that parents only pay a cost of reproduction when local competition is high. In line with this, recent experimental work on a small passerine bird, the Great tit (Parus major) showed that reproductive effort negatively affected the competitive ability of parents, estimated through competition for high quality breeding sites in spring. In the current study, we further investigate the negative causal relationship between reproductive effort and future parental competitive ability, with the aim to quantify the consequences for parental fitness, when breeding sites are scarce. To this end, we (a) manipulated the family size of Great tit parents and (b) induced severe competition for nest boxes among the parents just before the following breeding season by means of a large-scale nest box removal experiment. Parents increased their feeding effort in response to our family size manipulation and we successfully induced competition among the parents the following spring. Against our expectation, we found no effect of last season's family size on the ability of parents to secure a scarce nest box for breeding. In previous years, if detected, the survival cost of reproduction was always paid after midwinter. In this year, parents did pay a survival cost of reproduction before midwinter and thus before the onset of the experiment in early spring. Winter food availability during our study year was exceptionally low, and thus, competition in early winter may have been extraordinarily high. We hypothesize that differences in parental competitive ability due to their previous reproductive effort might have played a role, but before the onset of our experiment and resulted in the payment of the survival cost of reproduction.
Stichworte
brood size manipulation; carry-over effects; intraspecific competition; life history theory; social environment
Erscheinungsjahr
2018
Zeitschriftentitel
ECOLOGY AND EVOLUTION
Band
8
Ausgabe
17
Seite(n)
8865-8879
ISSN
2045-7758
Page URI
https://pub.uni-bielefeld.de/record/2931503

Zitieren

Fokkema R, Ubels R, Both C, de Felici L, Tinbergen JM. Reproductive effort and future parental competitive ability: A nest box removal experiment. ECOLOGY AND EVOLUTION. 2018;8(17):8865-8879.
Fokkema, R., Ubels, R., Both, C., de Felici, L., & Tinbergen, J. M. (2018). Reproductive effort and future parental competitive ability: A nest box removal experiment. ECOLOGY AND EVOLUTION, 8(17), 8865-8879. doi:10.1002/ece3.4342
Fokkema, R., Ubels, R., Both, C., de Felici, L., and Tinbergen, J. M. (2018). Reproductive effort and future parental competitive ability: A nest box removal experiment. ECOLOGY AND EVOLUTION 8, 8865-8879.
Fokkema, R., et al., 2018. Reproductive effort and future parental competitive ability: A nest box removal experiment. ECOLOGY AND EVOLUTION, 8(17), p 8865-8879.
R. Fokkema, et al., “Reproductive effort and future parental competitive ability: A nest box removal experiment”, ECOLOGY AND EVOLUTION, vol. 8, 2018, pp. 8865-8879.
Fokkema, R., Ubels, R., Both, C., de Felici, L., Tinbergen, J.M.: Reproductive effort and future parental competitive ability: A nest box removal experiment. ECOLOGY AND EVOLUTION. 8, 8865-8879 (2018).
Fokkema, Rienk, Ubels, Richard, Both, Christiaan, de Felici, Livia, and Tinbergen, Joost M. “Reproductive effort and future parental competitive ability: A nest box removal experiment”. ECOLOGY AND EVOLUTION 8.17 (2018): 8865-8879.

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