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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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