Horizontal transmission maintains host specificity and codiversification of symbionts in a brood parasitic host.

Autor: Pedroso LGA; Departamento de Zoologia, Av. 24-A, 1515, 13506-900, Universidade Estadual Paulista, Rio Claro, São Paulo State, Brazil. luizgustavopedroso@gmail.com.; Department of Biological Sciences, Purdue University, West Lafayette, IN, USA. luizgustavopedroso@gmail.com.; Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI, USA. luizgustavopedroso@gmail.com., Klimov PB; Department of Biological Sciences, Purdue University, West Lafayette, IN, USA. pklimov@purdue.edu.; Tyumen State University, 10 Semakova Str., 625003, Tyumen, Russia. pklimov@purdue.edu.; Bangor University, Brambell 503, School of Natural Sciences, Bangor, LL57 2 UW, Wales, UK. pklimov@purdue.edu., Mironov SV; Zoological Institute of the Russian Academy of Sciences, Saint Petersburg, 199034, Russia., OConnor BM; Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI, USA., Braig HR; Bangor University, Brambell 503, School of Natural Sciences, Bangor, LL57 2 UW, Wales, UK.; Institute and Museum of Natural Sciences, Faculty of Natural and Exact Sciences, National University of San Juan, San Juan, Argentina., Pepato AR; Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil., Johnson KP; Illinois Natural History Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, Champaign, IL, USA., He Q; Department of Biological Sciences, Purdue University, West Lafayette, IN, USA. heqixin@purdue.edu., Hernandes FA; Departamento de Zoologia, Av. 24-A, 1515, 13506-900, Universidade Estadual Paulista, Rio Claro, São Paulo State, Brazil.; Departamento de Ecologia e Zoologia, CCB/ECZ, Trindade, Universidade Federal de Santa Catarina, 88040-970, Florianópolis, Santa Catarina, Brazil.
Jazyk: angličtina
Zdroj: Communications biology [Commun Biol] 2023 Nov 16; Vol. 6 (1), pp. 1171. Date of Electronic Publication: 2023 Nov 16.
DOI: 10.1038/s42003-023-05535-1
Abstrakt: In host-symbiont systems, interspecific transmissions create opportunities for host switches, potentially leading to cophylogenetic incongruence. In contrast, conspecific transmissions often result in high host specificity and congruent cophylogenies. In most bird-feather mite systems, conspecific transmission is considered dominant, while interspecific transmission is supposedly rare. However, while mites typically maintain high host specificity, incongruent cophylogenies are common. To explain this conundrum, we quantify the magnitude of conspecific vs. interspecific transmission in the brood parasitic shiny cowbird (Molothrus bonariensis). M. bonariensis lacks parental care, allowing the assessment of the role of horizontal transmission alone in maintaining host specificity. We found that despite frequent interspecific interactions via foster parental care, mite species dispersing via conspecific horizontal contacts are three times more likely to colonize M. bonariensis than mites transmitted vertically via foster parents. The results highlight the previously underappreciated rate of transmission via horizontal contacts in maintaining host specificity on a microevolutionary scale. On a macroevolutionary scale, however, host switches were estimated to have occurred as frequently as codivergences. This suggests that macroevolutionary patterns resulting from rare events cannot be easily generalized from short-term evolutionary trends.
(© 2023. The Author(s).)
Databáze: MEDLINE
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