Non-Allopatric Speciation in Animals

Futuyma, Douglas J.; Mayer, Gregory C.

doi:10.2307/2412661

Cited by 338 publications

(168 citation statements)

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“…Sympatric speciation received special scrutiny as it required that reproductively isolated populations evolve from within an initially panmictic population in the face of opportunities for homogenization by the countervailing forces of gene flow and recombination. Thus, while enthusiasm for sympatric speciation has continued to wax and wane, it is generally accepted to be a theoretically more onerous mode than allopatric speciation and thus to require quite particular conditions for its occurrence [14,15].…”

Section: Ecological Speciation / = Sympatric Speciationmentioning

confidence: 99%

“…Ecological speciation per se is theoretically simple and straightforward, and abundant empirical evidence now supports it [18], while conditions for sympatric speciation are theoretically restrictive and evidence compellingly supporting it-regardless of how common it may actually be-is difficult to obtain [14]. Thus, conceptually equating these terms makes sympatric speciation appear to be more broadly supported than it actually is.…”

Section: Ecological Speciation / = Sympatric Speciationmentioning

confidence: 99%

“…However, although the existence of host races is consistent with sympatric speciation, it does not imply sympatric speciation. Indeed, the most theoretically onerous stages of sympatric speciation are the early ones in which reproductive isolation must evolve from within an initially panmictic population [14]. Thus, unless sympatric origins have been demonstrated, host races may alternatively reflect secondary contact and the maintenance of differentiation between populations whose initial divergence occurred allopatrically.…”

Section: Host Races: Ever Intriguing Overdiagnosedmentioning

confidence: 99%

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Of “Host Forms” and Host Races: Terminological Issues in Ecological Speciation

Funk

2012

International Journal of Ecology

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Successful communication and accurate inferences in science depend on the common understanding and consistent usage of the terms we apply to concepts of interest. Likewise, new terminology is required when important concepts have gone unnamed. Here, I focus on terminological issues about biological variation and ecological speciation, especially in herbivorous insects but also more generally. I call for the more restricted use of concepts that have sometimes been misapplied, and thus caution against synonymizing ecological speciation with sympatric speciation and the unwarranted invocation of "host races" to describe herbivorous insect differentiation. I also call for the qualified application of terms for different kinds of biological variation and for host range when confronting uncertainty. Among other "missing terms" introduced here is "host form," a generic term describing any case of host-associated differences for which current evidence does not allow diagnosis of the specific kind of variation. Embracing the use of host form should free host race from its current overapplication. Finally, I present a case study in which Neochlamisus leaf beetle populations previously described as host forms are hereby declared to be host races, based on accumulated evidence supporting each of the associated criteria.

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Section: Ecological Speciation / = Sympatric Speciationmentioning

confidence: 99%

Section: Ecological Speciation / = Sympatric Speciationmentioning

confidence: 99%

Section: Host Races: Ever Intriguing Overdiagnosedmentioning

confidence: 99%

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Of “Host Forms” and Host Races: Terminological Issues in Ecological Speciation

Funk

2012

International Journal of Ecology

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“…Mayr (1942Mayr ( , 1963. 12 See, for example, Mayr (1942Mayr ( , 1963; Futuyma & Mayer (1980);Felsenstein (1981);Futuyma (1987Futuyma ( , 1988; Barraclough & Vogler (2000). Cf.…”

Section: The Paradox Of ôAdaptive Speciationõmentioning

confidence: 99%

“…See also Bush (1975); White (1978); Bush & Butlin (2004). 52 Futuyma & Mayer (1980);Felsenstein (1981).…”

Section: ) Prezygotic Mechanisms (A) Ecological Isolation (B) Seasonmentioning

confidence: 99%

Adaptive speciation: the role of natural selection in mechanisms of geographic and non-geographic speciation

Baker

2005

Studies in History and Philosophy of Science Part C: Studies in

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Recent discussion of mechanism has suggested new approaches to several issues in the philosophy of science, including theory structure, causal explanation, and reductionism. Here, I apply what I take to be the fruits of the Ônew mechanical philosophyÕ to an analysis of a contemporary debate in evolutionary biology about the role of natural selection in speciation. Traditional accounts of that debate focus on the geographic context of genetic divergencenamely, whether divergence in the absence of geographic isolation is possible (or significant). Those accounts are at best incomplete, I argue, because they ignore the mechanisms producing divergence and miss what is at stake in the biological debate. I argue that the biological debate instead concerns the scope of particular speciation mechanisms which assign different roles to natural selection at various stages of divergence. The upshot is a new interpretation of the crux of that debate-namely, whether divergence with gene flow is possible (or significant) and whether the isolating mechanisms producing it are adaptive.

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Dualism and conflicts in understanding speciation

Schilthuizen

2000

Bioessays

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Speciation is a central but elusive issue in evolutionary biology. Over the past sixty years, the subject has been studied within a framework conceived by Ernst Mayr and Theodosius Dobzhansky and subsequently developed further by numerous other workers. In this "isolation" theory, the evolution of reproductive isolation is a key element of speciation; natural selection is given only secondary importance while gene flow is considered prohibitive to the process. In this paper, I argue that certain elements in this approach have produced confusion and irreconcilability among students of speciation. The more prominent debates in speciation (i.e., the species definition, sympatry/allopatry, and the role of reinforcement) all derive from an inherent conflict between the "isolation" theory and Darwin's "selection" view on species and speciation (in which disruptive selection is crucial). New data, mainly from field ecology, molecular population genetics, laboratory studies with Drosophila and computer analysis, all suggest that the isolation theory may no longer be the most desirable vantage point from which to explore speciation. Instead, environmental selection in large populations, often unimpeded by ongoing gene flow, appears to be the decisive element. The traditional preoccupation with reproductive isolation has created gaps in our knowledge of several crucial issues, mainly regarding the role of environmental selection and its connection with mate selection.

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Non-Allopatric Speciation in Animals

Cited by 338 publications

References 0 publications

Of “Host Forms” and Host Races: Terminological Issues in Ecological Speciation

Of “Host Forms” and Host Races: Terminological Issues in Ecological Speciation

Adaptive speciation: the role of natural selection in mechanisms of geographic and non-geographic speciation

Dualism and conflicts in understanding speciation

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