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.