Comparative studies on speciation: 30 years since Coyne and Orr

Matute, Daniel R.; Cooper, Brandon S.

doi:10.1111/evo.14181

Cited by 69 publications

(73 citation statements)

References 285 publications

(520 reference statements)

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“…The value of working together to build this kind of resource is highlighted by the series of comparative studies of RI in the genus Drosophila (recently reviewed by Matute and Cooper 2021). First consisting of 119 pairs of taxa assembled by Coyne and Orr (1989), this dataset has been expanded over the last three decades to include 630 pairs of taxa along with estimates of genetic divergence and other factors such as their range size and amount of range overlap (Yukilevich 2012).…”

Section: Part 3: How the Continuum Concept Can Advance Our Understanding Of Speciationmentioning

confidence: 99%

“…Rather than simply examining how patterns of genome‐wide variation change along the speciation continuum (e.g., π , F ST , and d xy ), it may soon be possible to understand how the genomic distribution and effect size of barrier loci varies with the overall strength of RI (Box 3). For more thoughts on the future of comparative studies of speciation, see Matute and Cooper (2021).…”

Section: Part 3: How the Continuum Concept Can Advance Our Understanding Of Speciationmentioning

confidence: 99%

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Defining the speciation continuum

2021

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A primary roadblock to our understanding of speciation is that it usually occurs over a timeframe that is too long to study from start to finish. The idea of a speciation continuum provides something of a solution to this problem; rather than observing the entire process, we can simply reconstruct it from the multitude of speciation events that surround us. But what do we really mean when we talk about the speciation continuum, and can it really help us understand speciation? We explored these questions using a literature review and online survey of speciation researchers. Although most researchers were familiar with the concept and thought it was useful, our survey revealed extensive disagreement about what the speciation continuum actually tells us. This is due partly to the lack of a clear definition. Here, we provide an explicit definition that is compatible with the Biological Species Concept. That is, the speciation continuum is a continuum of reproductive isolation. After outlining the logic of the definition in light of alternatives, we explain why attempts to reconstruct the speciation process from present‐day populations will ultimately fail. We then outline how we think the speciation continuum concept can continue to act as a foundation for understanding the continuum of reproductive isolation that surrounds us.

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Section: Part 3: How the Continuum Concept Can Advance Our Understanding Of Speciationmentioning

confidence: 99%

Section: Part 3: How the Continuum Concept Can Advance Our Understanding Of Speciationmentioning

confidence: 99%

Defining the speciation continuum

2021

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“…Furthermore, while the mechanism itself is no longer seriously discussed, the questions regarding rates of evolutionary change and mechanisms of speciation that it sought to answer are (e.g., Uyeda et al. 2011; Matute and Cooper 2021). In this context, we evaluate the predictions of genetic revolutions in light of molecular phylogenetics, concluding that there is no evidence for an association between population bottlenecks and rapid evolution.…”

Section: Stasismentioning

confidence: 99%

Neo‐darwinism still haunts evolutionary theory: A modern perspective on Charlesworth, Lande, and Slatkin (1982)

2021

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The Modern Synthesis (or “Neo‐Darwinism”), which arose out of the reconciliation of Darwin's theory of natural selection and Mendel's research on genetics, remains the foundation of evolutionary theory. However, since its inception, it has been a lightning rod for criticism, which has ranged from minor quibbles to complete dismissal. Among the most famous of the critics was Stephen Jay Gould, who, in 1980, proclaimed that the Modern Synthesis was “effectively dead.” Gould and others claimed that the action of natural selection on random mutations was insufficient on its own to explain patterns of macroevolutionary diversity and divergence, and that new processes were required to explain findings from the fossil record. In 1982, Charlesworth, Lande, and Slatkin published a response to this critique in Evolution, in which they argued that Neo‐Darwinism was indeed sufficient to explain macroevolutionary patterns. In this Perspective for the 75th Anniversary of the Society for the Study of Evolution, we review Charlesworth et al. in its historical context and provide modern support for their arguments. We emphasize the importance of microevolutionary processes in the study of macroevolutionary patterns. Ultimately, we conclude that punctuated equilibrium did not represent a major revolution in evolutionary biology – although debate on this point stimulated significant research and furthered the field – and that Neo‐Darwinism is alive and well.

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“…Hosts may acquire endosymbionts cladogenically from common ancestors (Raychoudhury et al, 2009;Koga et al, 2013;Toju et al, 2013), from sister species via hybridization and introgression (Turelli et al, 2018;Cooper et al, 2019), or horizontally in ways that are not fully understood (O'Neill et al, 1992;Huigens et al, 2000;Ahmed et al, 2015). While few examples exist, endosymbionts can contribute to host reproductive isolation (RI) and speciation (Coyne and Orr, 2004;Matute and Cooper, 2021), highlighting the importance of discovering and characterizing endosymbiont-host associations.…”

Section: Introductionmentioning

confidence: 99%

“…Wolbachia may contribute to host RI (Coyne and Orr, 2004;Matute and Cooper, 2021), with the best evidence coming from Drosophila. Wolbachia contribute to assortative mating and postzygotic isolation between co-occurring D. paulistorum semi-species (Miller, Ehrman and Schneider, 2010), and to reinforcement of isolation between uninfected D. subquinaria and Wolbachia-infected D. recens (Shoemaker, Katju and Jaenike, 1999;Jaenike et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Wolbachiain the spittlebugProsapia ignipectus:Variable infection frequencies, but no apparent effect on host reproductive isolation

Wheeler

Thompson

Conner

et al. 2021

Preprint

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Animals serve as hosts for complex communities of microorganisms, including endosymbionts that live inside their cells. Wolbachia bacteria are perhaps the most common endosymbionts, manipulating host reproduction to propagate. Many Wolbachia cause intense cytoplasmic incompatibility (CI) that promotes their spread to high and relatively stable frequencies. Wolbachia that cause weak or no CI tend to persist at intermediate, often variable, frequencies. Wolbachia could also contribute to host reproductive isolation (RI), although current support for such contributions is limited to a few systems. To test for Wolbachia frequency variation and effects on host RI, we sampled several local Prosapia ignipectus (Fitch)(Hemiptera: Cercopidae) spittlebug populations in the northeastern USA over two years, including closely juxtaposed Maine populations with different monomorphic color forms, “black” and “lined”. We discovered a group-B Wolbachia (wPig) infecting P. ignipectus that diverged from group-A Wolbachia, like model wMel and wRi strains in Drosophila, 6 to 46 MYA. Populations of the sister species Prosapia bicincta (Say) from Hawaii and Florida are uninfected, suggesting that P. ignipectus acquired wPig after their initial divergence. wPig frequencies were generally high and variable among sites and between years. While phenotyping wPig effects on host reproduction is not currently feasible, the wPig genome contains three divergent sets of CI loci, consistent with high wPig frequencies. Finally, Maine monomorphic black and monomorphic lined populations of P. ignipectus share both wPig and mtDNA haplotypes, implying no apparent effect of wPig on the maintenance of this morphological contact zone. We hypothesize P. ignipectus acquired wPig horizontally as observed for many Drosophila species, and that significant CI and variable transmission produce high but variable wPig frequencies.

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Comparative studies on speciation: 30 years since Coyne and Orr

Cited by 69 publications

References 285 publications

Defining the speciation continuum

Defining the speciation continuum

Neo‐darwinism still haunts evolutionary theory: A modern perspective on Charlesworth, Lande, and Slatkin (1982)

Wolbachiain the spittlebugProsapia ignipectus:Variable infection frequencies, but no apparent effect on host reproductive isolation

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