Incipient allochronic speciation due to non-selective assortative mating by flowering time, mutation and genetic drift

Devaux, Céline; Lande, Russell

doi:10.1098/rspb.2008.0882

Cited by 65 publications

(114 citation statements)

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“…Strong assortative mating produces high correlations of allelic effects among all loci, which leads to the evolution of two phenotypic classes: one with alleles increasing the trait and the other with alleles decreasing the trait (Crow and Kimura, 1970). Devaux and Lande (2008) found similar results using a finite diploid population with multiple alleles per locus and they showed that the splitting of the phenotype distribution is possible under strong assortative mating and genetic drift, but the distribution is transient rather than permanent. However, our distribution is not transient, and this is probably because we only considered two allelic states for each locus.…”

Section: Evolution Of Quantitative Trait Distributionsupporting

confidence: 64%

The emergence of network structure, complementarity and convergence from basic ecological and genetic processes

Encinas‐Viso

Etienne

2014

Preprint

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Plant-animal mutualistic networks are highly diverse and structured. This has been explained by coevolution through niche based processes. However, this explanation is only warranted if neutral processes (e.g. limited dispersal, genetic and ecological drift) cannot explain these patterns. Here we present a spatially explicit model based on explicit genetics and quantitative traits to study the connection between genome evolution, speciation and plant-animal network demography. We consider simple processes for the speciation dynamics of plant-animal mutualisms: ecological (dispersal, demography) and genetic processes (mutation, recombination, drift) and morphological constraints (matching of quantitative trait) for species interactions, particularly mating. We find the evolution of trait convergence and complementarity and topological features observed in real plant-animal mutualistic webs (i.e. nestedness and centrality). Furthermore, the morphological constraint for plant reproduction generates higher centrality among plant individuals (and species) than in animals, consistent with observations. We argue that simple processes are able to reproduce some well known ecological and evolutionary patterns of plant-animal mutualistic webs. IntroductionSince Darwin's book "On The Origin of Species" (Darwin, 1862b), the idea of coevolution 1 has sparked interest from biologists trying to understand how species interactions generate trait changes. The first clear indication of coevolution was Darwin's moth example (Darwin, 1862a) showing that the long corolla from the orchid Angraecum sesquispedale could only be reached by a pollinator species with a similar proboscis length. However, much later Janzen (1980) argued that this amazingly high specialization between plants and animals was not the only example of coevolution. He explained that coevolution can also be the product of multiplespecies interactions, a term that he coined "diffuse coevolution". Diffuse coevolution means that selection on traits is determined by the interaction of all species in the community and not only * Corresponding author: franencinas@gmail.com 1 defined as reciprocal evolutionary change between species 1. CC-BY-NC-ND 4.0 International license It is made available under a (which was not peer-reviewed) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity.The copyright holder for this preprint . http://dx.doi.org/10.1101/007393 doi: bioRxiv preprint first posted online Jul. 23, 2014; based on pair-wise interactions. This is based on the idea of pollination or dispersal "syndromes", where plants have a set of traits that attract a specific group of pollinator or animal seed-disperser species.Later, the idea of "diffuse coevolution" was related to patterns of nestedness detected across biogeographic regions in mutualistic networks. Nestedness, defined as a non-random pattern of interactions where specialist species interact with proper subsets of more generalist species puts the concept of "diffuse co...

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Section: Evolution Of Quantitative Trait Distributionsupporting

confidence: 64%

The emergence of network structure, complementarity and convergence from basic ecological and genetic processes

Encinas‐Viso

Etienne

2014

Preprint

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“…Because this need not require geographical isolation, allochronic speciation is often considered a special case of sympatric speciation (Alexander and Bigelow 1960;Yamamoto and Sota 2009). Evidence for allochronic speciation exists for organisms such as insects, fish, and plants (Alexander and Bigelow 1960;Simon et al 2000;Ritchie 2001;Devaux and Lande 2008;Yamamoto and Sota 2009). For birds and other tetrapods, we are aware of only one example of allochronic speciation, which involves sympatric seabirds (Friesen et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Asynchrony of Seasons: Genetic Differentiation Associated with Geographic Variation in Climatic Seasonality and Reproductive Phenology

Quintero

González‐Caro

Zalamea

et al. 2014

The American Naturalist

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. abstract: Many organisms exhibit distinct breeding seasons tracking food availability. If conspecific populations inhabit areas that experience different temporal cycles in food availability spurred by variation in precipitation regimes, then they should display asynchronous breeding seasons. Thus, such populations might exhibit a temporal barrier to gene flow, which may potentially promote genetic differentiation. We test a central prediction of this hypothesis, namely, that individuals living in areas with more asynchronous precipitation regimes should be more genetically differentiated than individuals living in areas with more similar precipitation regimes. Using mitochondrial DNA sequences, climatic data, and geographical/ecological distances between individuals of 57 New World bird species mostly from the tropics, we examined the effect of asynchronous precipitation (a proxy for asynchronous resource availability) on genetic differentiation. We found evidence for a positive and significant cross-species effect of precipitation asynchrony on genetic distance after accounting for geographical/ecological distances, suggesting that current climatic conditions may play a role in population differentiation. Spatial asynchrony in climate may thus drive evolutionary divergence in the absence of overt geographic barriers to gene flow; this mechanism contrasts with those invoked by most models of biotic diversification emphasizing physical or ecological changes to the landscape as drivers of divergence.

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“…Adaptive change is facilitated when the trait under selection is also the trait according to which individuals choose mates (Doebeli & Dieckmann 2000;but see Fox 2003). For a trait such as timing of breeding, some level of assortative mating between individuals with similar trait values is inevitable (Fox 2003;Weis & Kossler 2004;Weis 2005), and the resulting inflation of genetic variance can hasten evolutionary change in breeding time (Hendry & Day 2005;Devaux & Lande 2008).…”

Section: Evolution Of Phenologymentioning

confidence: 99%

Toward a synthetic understanding of the role of phenology in ecology and evolution

Forrest

Miller‐Rushing

2010

Phil. Trans. R. Soc. B

571

525

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Phenology affects nearly all aspects of ecology and evolution. Virtually all biological phenomenafrom individual physiology to interspecific relationships to global nutrient fluxes-have annual cycles and are influenced by the timing of abiotic events. Recent years have seen a surge of interest in this topic, as an increasing number of studies document phenological responses to climate change. Much recent research has addressed the genetic controls on phenology, modelling techniques and ecosystem-level and evolutionary consequences of phenological change. To date, however, these efforts have tended to proceed independently. Here, we bring together some of these disparate lines of inquiry to clarify vocabulary, facilitate comparisons among habitat types and promote the integration of ideas and methodologies across different disciplines and scales. We discuss the relationship between phenology and life history, the distinction between organismal-and population-level perspectives on phenology and the influence of phenology on evolutionary processes, communities and ecosystems. Future work should focus on linking ecological and physiological aspects of phenology, understanding the demographic effects of phenological change and explicitly accounting for seasonality and phenology in forecasts of ecological and evolutionary responses to climate change.

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Incipient allochronic speciation due to non-selective assortative mating by flowering time, mutation and genetic drift

Cited by 65 publications

References 80 publications

The emergence of network structure, complementarity and convergence from basic ecological and genetic processes

The emergence of network structure, complementarity and convergence from basic ecological and genetic processes

Asynchrony of Seasons: Genetic Differentiation Associated with Geographic Variation in Climatic Seasonality and Reproductive Phenology

Toward a synthetic understanding of the role of phenology in ecology and evolution

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