J 2023

Lack of host specialization despite selective host use in brood parasitic cuckoo catfish

REICHARD, Martin, Stephan KOBLMULLER, Radim BLAŽEK, Holger ZIMMERMANN, Cyprian KATONGO et. al.

Základní údaje

Originální název

Lack of host specialization despite selective host use in brood parasitic cuckoo catfish

Autoři

REICHARD, Martin (203 Česká republika, garant, domácí), Stephan KOBLMULLER, Radim BLAŽEK (203 Česká republika, domácí), Holger ZIMMERMANN, Cyprian KATONGO, Anna BRYJOVA a Josef BRYJA (203 Česká republika, domácí)

Vydání

Molecular Ecology, doi: 10.1111/j.1365-294X.2010.04899.x, Blackwell Publishing Ltd. 2023, 0962-1083

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 4.900 v roce 2022

Kód RIV

RIV/00216224:14310/23:00132165

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001086208900001

Klíčová slova anglicky

brood parasitism; fish; host specialisation; host-parasite relationship; interspecific interactions; social evolution

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 14. 11. 2023 14:19, Mgr. Marie Šípková, DiS.

Anotace

V originále

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.