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Success of cuckoo catfish brood parasitism reflects coevolutionary history and individual experience of their cichlid hosts

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Date
02/05/2018
Author
Blažek, Radim
Polačik, Matej
Smith, Carl
Honza, Marcel
Meyer, Axel
Reichard, Martin
Keywords
QH301 Biology
SH Aquaculture. Fisheries. Angling
DAS
BDC
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Abstract
Obligate brood parasites manipulate other species into raising their offspring. Avian and insect brood parasitic systems demonstrate how interacting species engage in reciprocal coevolutionary arms races through behavioral and morphological adaptations and counteradaptations. Mouthbrooding cichlid fishes are renowned for their remarkable evolutionary radiations and complex behaviors. In Lake Tanganyika, mouthbrooding cichlids are exploited by the only obligate nonavian vertebrate brood parasite, the cuckoo catfish Synodontis multipunctatus. We show that coevolutionary history and individual learning both have a major impact on the success of cuckoo catfish parasitism between coevolved sympatric and evolutionarily naïve allopatric cichlid species. The rate of cuckoo catfish parasitism in coevolved Tanganyikan hosts was 3 to 11 times lower than in evolutionarily naïve cichlids. Moreover, using experimental infections, we demonstrate that parasite egg rejection in sympatric hosts was much higher, leading to seven times greater parasite survival in evolutionarily naïve than sympatric hosts. However, a high rejection frequency of parasitic catfish eggs by coevolved sympatric hosts came at a cost of increased rejection of their own eggs. A significant cost of catfish parasitism was universal, except for coevolved sympatric cichlid species with previous experience of catfish parasitism, demonstrating that learning and individual experience both contribute to a successful host response.
Citation
Blažek , R , Polačik , M , Smith , C , Honza , M , Meyer , A & Reichard , M 2018 , ' Success of cuckoo catfish brood parasitism reflects coevolutionary history and individual experience of their cichlid hosts ' , Science Advances , vol. 4 , no. 5 , eaar4380 . https://doi.org/10.1126/sciadv.aar4380
Publication
Science Advances
Status
Peer reviewed
DOI
https://doi.org/10.1126/sciadv.aar4380
ISSN
2375-2548
Type
Journal article
Rights
Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
Description
Financial support came from Czech Science Foundation (P505/12/G112 and 18-00682S).
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/13286

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