Lack of host specialization despite selective host use in brood parasitic cuckoo catfish
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F23%3A00577870" target="_blank" >RIV/68081766:_____/23:00577870 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/23:00132165
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/10.1111/mec.17173" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1111/mec.17173</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/mec.17173" target="_blank" >10.1111/mec.17173</a>
Alternative languages
Result language
angličtina
Original language name
Lack of host specialization despite selective host use in brood parasitic cuckoo catfish
Original language description
Host-parasite dynamics involve coevolutionary arms races, which may lead to host specialization and ensuing diversification. Our general understanding of the evolution of host specialization in brood parasites is compromised by a restricted focus on bird and insect lineages. The cuckoo catfish (Synodontis multipunctatus) is an obligate parasite of parental care of mouthbrooding cichlids in Lake Tanganyika. Given the ecological and taxonomic diversity of mouthbrooding cichlids in the lake, we hypothesized the existence of sympatric host-specific lineages in the cuckoo catfish. In a sample of 779 broods from 20 cichlid species, we found four species parasitized by cuckoo catfish (with prevalence of parasitism of 2%-18%). All parasitized cichlids were from the tribe Tropheini, maternal mouthbrooders that spawn over a substrate (rather than in open water). Phylogenetic analysis based on genomic (ddRAD sequencing) and mitochondrial (Dloop) data from cuckoo catfish embryos showed an absence of host-specific lineages. This was corroborated by analyses of genetic structure and co-ancestry matrix. Within host species, parasitism was not associated with any individual characteristic we recorded (parent size, water depth), but was costly as parasitized parents carried smaller clutches of their own offspring. We conclude that the cuckoo catfish is an intermediate generalist and discuss costs, benefits and constraints of host specialization in this species and brood parasites in general.
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
10613 - Zoology
Result continuities
Project
<a href="/en/project/GX21-00788X" target="_blank" >GX21-00788X: The role of coevolution in ecological speciation</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecular Ecology
ISSN
0962-1083
e-ISSN
1365-294X
Volume of the periodical
32
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
6070-6082
UT code for WoS article
001086208900001
EID of the result in the Scopus database
2-s2.0-85174545980