Factors influencing low incidence of double brooding in the Great Reed Warbler

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F24%3A00574831" target="_blank" >RIV/68081766:_____/24:00574831 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s10336-023-02094-4" target="_blank" >https://link.springer.com/article/10.1007/s10336-023-02094-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10336-023-02094-4" target="_blank" >10.1007/s10336-023-02094-4</a>

Result language

angličtina

Original language name

Factors influencing low incidence of double brooding in the Great Reed Warbler

Original language description

Double brooding, the laying of a second clutch after successfully fledging young from a first nest in a season, is a common reproductive strategy among short-lived birds to increase annual breeding success. Nevertheless, there is widespread intra- and interspecific variation in the probability of producing a second clutch. Given that the frequency of double brooding could affect population growth rate, knowing what factors contribute to this phenomenon is also important in the conservation management of threatened facultative double-brooded species. Here, we examine the frequency of double brooding and the factors affecting the probability of this reproductive strategy in a population of the Great Reed Warbler, Acrocephalus arundinaceus, in south-western Slovakia. Results of a 15-year study (2008-2022) revealed low overall rate of double brooding in the Great Reed Warbler (5.6% per year, 0-15.4%). The length of breeding season, timing of the first clutch laying date and the size of the first broods were key factors influencing the female's decision to initiate a second clutch. On the other hand, successful brood parasitism did not affect second clutch initiation, which contrasts with our prediction. Given that only monogamous or primary females initiated a second clutch after successfully rearing a first one, we assume that producing two broods within the same season may be an alternative strategy for monogamous males to increase their annual reproductive output in this facultatively polygynous species. Therefore, due to relatively high rate of polygyny, we probably cannot expect higher rate of double broodings in the Great Reed Warbler in the future either.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10615 - Ornithology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Ornithology

ISSN

2193-7192

e-ISSN

2193-7206

Volume of the periodical

165

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

127-135

UT code for WoS article

001037048400001

EID of the result in the Scopus database

2-s2.0-85166198301