Horizontal transmission maintains host specificity and codiversification of symbionts in a brood parasitic host.
Horizontal transmission maintains host specificity and codiversification of symbionts in a brood parasitic host.
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DOI：
10.1038/s42003-023-05535-1
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发表时间：
2023-11-16
影响因子：
5.9
通讯作者：
Hernandes, Fabio Akashi
中科院分区：
文献类型：
--
作者：
Pedroso, Luiz Gustavo A.;Klimov, Pavel B.;Mironov, Sergey V.;OConnor, Barry M.;Braig, Henk R.;Pepato, Almir R.;Johnson, Kevin P.;He, Qixin;Hernandes, Fabio Akashi
在主机共生系统中，种间传输主机开关的机会，可能导致同源不一致。与此相反，同种传播往往导致高主机特异性和一致的同源性。在大多数鸟羽螨系统中，同种传播被认为是占主导地位的，而种间传播是罕见的。然而，虽然螨类通常保持高度的宿主特异性，但不一致的同源性是常见的。为了解释这个难题，我们量化的大小同种与种间传输的育雏寄生闪亮的燕八哥（Molothrus bonariensis）。M. bonariensis缺乏父母照顾，允许评估水平传播在维持宿主特异性方面的作用。我们发现，尽管频繁的种间相互作用，通过寄养父母的照顾，螨种分散通过同种水平接触的三倍更有可能殖民M。bonariensis比螨通过养父母垂直传播。结果突出了以前低估的传输率通过水平接触保持主机特异性的微进化规模。然而，在宏观进化的规模，主机开关估计发生频繁的codivergences。这表明，从罕见事件产生的宏观进化模式，不能很容易地从短期的进化趋势概括。对雀形目鸟类寄生螨共生体的定量分析表明，同种水平传播在寄主定殖中起着关键作用，它也可以促进宏观进化尺度上的共同多样化。
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. A quantitative analysis of mite symbionts of a brood parasitic passerine bird indicates that conspecific horizontal transmission plays a key role in host colonization and it can also promote codiversification at the macroevolutionary scale.
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影响因子：
1.3
作者：
Basso, W;Venturini, L;Dubey, JP
通讯作者：
Dubey, JP
DOI：
10.1098/rstb.2016.0083
发表时间：
2017-05-05
期刊：
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子：
--
作者：
Antonovics J;Wilson AJ;Forbes MR;Hauffe HC;Kallio ER;Leggett HC;Longdon B;Okamura B;Sait SM;Webster JP
通讯作者：
Webster JP
影响因子：
10.7
作者：
Minh BQ;Nguyen MA;von Haeseler A
通讯作者：
von Haeseler A
影响因子：
8.8
作者：
Agosta, Salvatore J.;Klemens, Jeffrey A.
通讯作者：
Klemens, Jeffrey A.
影响因子：
0.5
作者：
Brooks, Daniel R.;Hoberg, Eric P.;Boeger, Walter A.
通讯作者：
Boeger, Walter A.