Breeding synchrony does not affect extra-pair paternity in great reed warblers
Arlt, D ; Hansson, Bengt LU
; Bensch, Staffan
LU
; von Schantz, Torbjörn
LU
and Hasselquist, Dennis
LU
(2004)
In Behaviour
141(7).
p.863-880
- Abstract
- Breeding synchrony is hypothesised to influence the occurrence and frequency of extra-pair fertilisations (EPFs) in birds irrespective of the social mating system. The two proposed hypotheses make opposite predictions. (1) Synchronous breeding leads to a lower frequency of EPFs because males face a trade-off between mate guarding and obtaining additional matings via extra-pair copulations (EPCs) ('guarding constraint' hypothesis). (2) Synchronous breeding promotes EPFs because females are able to compare displaying males simultaneously, which provides them with more reliable cues for extra-pair mate choice ('mate assessment' hypothesis). In a study of great reed warblers (Acrocephalus arundillaceus) from 1987-1998, annual breeding was... (More)
- Breeding synchrony is hypothesised to influence the occurrence and frequency of extra-pair fertilisations (EPFs) in birds irrespective of the social mating system. The two proposed hypotheses make opposite predictions. (1) Synchronous breeding leads to a lower frequency of EPFs because males face a trade-off between mate guarding and obtaining additional matings via extra-pair copulations (EPCs) ('guarding constraint' hypothesis). (2) Synchronous breeding promotes EPFs because females are able to compare displaying males simultaneously, which provides them with more reliable cues for extra-pair mate choice ('mate assessment' hypothesis). In a study of great reed warblers (Acrocephalus arundillaceus) from 1987-1998, annual breeding was asynchronous and the frequency of EPFs was rather low (extra-pair young occurring in 6.4% of the broods). Within this population, however, there was no relationship between the frequency of EPFs and breeding synchrony, thus not favouring any of the two hypotheses. Contrary to assumptions of the hypotheses, mate guarding did not seem to constrain males from engaging in EPCs (disfavouring the 'guarding constraint' hypothesis), and females seem to have repeated opportunities to compare males irrespective of breeding synchrony (disfavouring the 'mate assessment' hypothesis). Our results suggest that breeding synchrony is not an important factor influencing patterns of EPFs in great reed warblers. The low frequency of EPFs may instead be explained by the socially polygynous mating system, where females are less constrained in their choice of a social male. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/136870
- author
- Arlt, D
; Hansson, Bengt
LU
; Bensch, Staffan
LU
; von Schantz, Torbjörn
LU
and Hasselquist, Dennis
LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Behaviour
- volume
- 141
- issue
- 7
- pages
- 863 - 880
- publisher
- Brill
- external identifiers
-
- wos:000224343200005
- scopus:4944256804
- ISSN
- 1568-539X
- DOI
- 10.1163/1568539042265699
- project
- Long-term study of great reed warblers
- language
- English
- LU publication?
- yes
- id
- b263f1c4-34e3-4378-803e-bfaf3c5f34b5 (old id 136870)
- alternative location
- http://dx.doi.org/10.1163/1568539042265699
- date added to LUP
- 2016-04-01 16:34:38
- date last changed
- 2022-04-15 05:22:36
@article{b263f1c4-34e3-4378-803e-bfaf3c5f34b5,
abstract = {{Breeding synchrony is hypothesised to influence the occurrence and frequency of extra-pair fertilisations (EPFs) in birds irrespective of the social mating system. The two proposed hypotheses make opposite predictions. (1) Synchronous breeding leads to a lower frequency of EPFs because males face a trade-off between mate guarding and obtaining additional matings via extra-pair copulations (EPCs) ('guarding constraint' hypothesis). (2) Synchronous breeding promotes EPFs because females are able to compare displaying males simultaneously, which provides them with more reliable cues for extra-pair mate choice ('mate assessment' hypothesis). In a study of great reed warblers (Acrocephalus arundillaceus) from 1987-1998, annual breeding was asynchronous and the frequency of EPFs was rather low (extra-pair young occurring in 6.4% of the broods). Within this population, however, there was no relationship between the frequency of EPFs and breeding synchrony, thus not favouring any of the two hypotheses. Contrary to assumptions of the hypotheses, mate guarding did not seem to constrain males from engaging in EPCs (disfavouring the 'guarding constraint' hypothesis), and females seem to have repeated opportunities to compare males irrespective of breeding synchrony (disfavouring the 'mate assessment' hypothesis). Our results suggest that breeding synchrony is not an important factor influencing patterns of EPFs in great reed warblers. The low frequency of EPFs may instead be explained by the socially polygynous mating system, where females are less constrained in their choice of a social male.}},
author = {{Arlt, D and Hansson, Bengt and Bensch, Staffan and von Schantz, Torbjörn and Hasselquist, Dennis}},
issn = {{1568-539X}},
language = {{eng}},
number = {{7}},
pages = {{863--880}},
publisher = {{Brill}},
series = {{Behaviour}},
title = {{Breeding synchrony does not affect extra-pair paternity in great reed warblers}},
url = {{http://dx.doi.org/10.1163/1568539042265699}},
doi = {{10.1163/1568539042265699}},
volume = {{141}},
year = {{2004}},
}