Son or daughter, it does not matter: brood parasites do not adjust offspring sex based on their own or host quality
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F20%3A43901460" target="_blank" >RIV/60076658:12310/20:43901460 - isvavai.cz</a>
Alternative codes found
RIV/68081766:_____/20:00524160
Result on the web
<a href="https://link.springer.com/article/10.1007/s10336-020-01782-9" target="_blank" >https://link.springer.com/article/10.1007/s10336-020-01782-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10336-020-01782-9" target="_blank" >10.1007/s10336-020-01782-9</a>
Alternative languages
Result language
angličtina
Original language name
Son or daughter, it does not matter: brood parasites do not adjust offspring sex based on their own or host quality
Original language description
Sex allocation theory posits that parents should adjust offspring sex ratio based on the costs and benefits associated with the production of either sex in a given context. Maternal condition should influence sex ratios when it has sex-specific impacts on offspring fitness (Trivers-Willard hypothesis) or when rearing costs differ between sons and daughters (cost of reproduction hypothesis). In sexually size-dimorphic species, mothers in good condition are predicted to produce an excess of offspring of the larger sex, whereas mothers in poor condition the opposite. Brood parasites constitute an exciting model for testing sex allocation theory as parasitic females are freed from rearing costs while these costs are covered by the hosts. Here, we investigate the effect of maternal and host quality (both expressed as egg volume and blue-green chroma) on offspring sex allocation in the common cuckoo (Cuculus canorus) parasitizing the great reed warbler (Acrocephalus arundinaceus). We found no significant effect of parasite egg-laying date and maternal or host quality on sex ratio. One explanation may be that parasitic females, instead of investing in differential sex allocation, invest in securing egg acceptance by the host, by laying non-randomly within a host population to match the appearance of host clutches. Alternatively, male and female parasite eggs do not differ in size suggesting that their production bears comparable costs. This, together with the fact that the whole parental care is covered by the hosts, supports the previous findings that the common cuckoo does not adjust offspring sex ratio.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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
Result continuities
Project
<a href="/en/project/GA17-12262S" target="_blank" >GA17-12262S: Reproductive strategies of an obligate brood parasite: host selection, offspring sex allocation and individual success</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Ornithology
ISSN
2193-7192
e-ISSN
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Volume of the periodical
161
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
977-986
UT code for WoS article
000530198200001
EID of the result in the Scopus database
2-s2.0-85085131235