The trade-off between molt andparental care: a sexual conflict in the blue tit?
Svensson, Erik LU
and Nilsen, Jan-Åke
(1997)
In Behavioral Ecology
8(1).
p.92-98
- Abstract
- Breeding activities and molt are generally thought to be mutually exclusive in birds since both are energetically costly and are normally separated in time. However, sometimes molt overlaps with breeding to some degree. A trade-off between adult somatic maintenance functions (feather renewal) and parental care is then to be expected. The consequences of this are largely unknown, and there are few studies that have shown any fitness costs of molt-breeding overlap. We investigated the consequences of molt-breeding overlap by removing first clutches of blue tit Parus caeruleus pairs, thereby inducing late repeat clutches. Among the delayed pairs, a high proportion of males and some females started their molt already during incubation or... (More)
- Breeding activities and molt are generally thought to be mutually exclusive in birds since both are energetically costly and are normally separated in time. However, sometimes molt overlaps with breeding to some degree. A trade-off between adult somatic maintenance functions (feather renewal) and parental care is then to be expected. The consequences of this are largely unknown, and there are few studies that have shown any fitness costs of molt-breeding overlap. We investigated the consequences of molt-breeding overlap by removing first clutches of blue tit Parus caeruleus pairs, thereby inducing late repeat clutches. Among the delayed pairs, a high proportion of males and some females started their molt already during incubation or nestling feeding. Molting males fed their nestling to a lesser extent than non-molting ones, and nestling mortality increased as a direct result of the early timing of male molt. Furthermore, the ability to raise an experimentally enlarged brood was negatively coupled to the molt stage of the male. Our data thus protide evidence that molt-breeding overlap leads to fitness costs, and we discuss the results within the context of sexual conflict and the implications for optimization of avian reproductive decisions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/33325
- author
- Svensson, Erik
LU
and Nilsen, Jan-Åke
- organization
- publishing date
- 1997
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- brood size, feeding frequency life-history trade-offs, nestling mortality, molt, Parus caeruleus, Paridae, aves (birds), blue tit, sexual conflict
- in
- Behavioral Ecology
- volume
- 8
- issue
- 1
- pages
- 92 - 98
- publisher
- Oxford University Press
- external identifiers
-
- scopus:0030618889
- ISSN
- 1045-2249
- language
- English
- LU publication?
- yes
- id
- 35f7c2ab-b1c4-45c7-b24a-b77bd5e6de1d (old id 33325)
- alternative location
- http://beheco.oxfordjournals.org/cgi/content/abstract/8/1/92
- date added to LUP
- 2016-04-01 17:11:25
- date last changed
- 2023-04-08 19:53:43
@article{35f7c2ab-b1c4-45c7-b24a-b77bd5e6de1d,
abstract = {{Breeding activities and molt are generally thought to be mutually exclusive in birds since both are energetically costly and are normally separated in time. However, sometimes molt overlaps with breeding to some degree. A trade-off between adult somatic maintenance functions (feather renewal) and parental care is then to be expected. The consequences of this are largely unknown, and there are few studies that have shown any fitness costs of molt-breeding overlap. We investigated the consequences of molt-breeding overlap by removing first clutches of blue tit Parus caeruleus pairs, thereby inducing late repeat clutches. Among the delayed pairs, a high proportion of males and some females started their molt already during incubation or nestling feeding. Molting males fed their nestling to a lesser extent than non-molting ones, and nestling mortality increased as a direct result of the early timing of male molt. Furthermore, the ability to raise an experimentally enlarged brood was negatively coupled to the molt stage of the male. Our data thus protide evidence that molt-breeding overlap leads to fitness costs, and we discuss the results within the context of sexual conflict and the implications for optimization of avian reproductive decisions.}},
author = {{Svensson, Erik and Nilsen, Jan-Åke}},
issn = {{1045-2249}},
keywords = {{brood size; feeding frequency life-history trade-offs; nestling mortality; molt; Parus caeruleus; Paridae; aves (birds); blue tit; sexual conflict}},
language = {{eng}},
number = {{1}},
pages = {{92--98}},
publisher = {{Oxford University Press}},
series = {{Behavioral Ecology}},
title = {{The trade-off between molt andparental care: a sexual conflict in the blue tit?}},
url = {{http://beheco.oxfordjournals.org/cgi/content/abstract/8/1/92}},
volume = {{8}},
year = {{1997}},
}