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

Quintero, Ignacio; González‐Caro, Sebastián; Zalamea, Paul‐Camilo; Cadena, Carlos Daniel

doi:10.1086/677261

Cited by 30 publications

(37 citation statements)

References 81 publications

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“…Comparisons across species show that the level of genetic structuring varies from deep phylogeographic breaks to unstructured panmictic populations [2]. This among-species variation in the amount and depth of phylogeographic structuring has been attributed to various factors, including differences in dispersal ability [3,4], habitat preferences [5], breeding phenology [6], life history traits [7], and the amount of evolutionary time in the landscape [8,9]. Because comparative phylogeographic studies usually examine species that occur within the same geographic region and in similar environmental and historical settings, the generality of associations between species traits and phylogeographic variation is largely unknown.…”

Section: Introductionmentioning

confidence: 99%

A latitudinal phylogeographic diversity gradient in birds

et al. 2017

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High tropical species diversity is often attributed to evolutionary dynamics over long timescales. It is possible, however, that latitudinal variation in diversification begins when divergence occurs within species. Phylogeographic data capture this initial stage of diversification in which populations become geographically isolated and begin to differentiate genetically. There is limited understanding of the broader implications of intraspecific diversification because comparative analyses have focused on species inhabiting and evolving in restricted regions and environments. Here, we scale comparative phylogeography up to the hemisphere level and examine whether the processes driving latitudinal differences in species diversity are also evident within species. We collected genetic data for 210 New World bird species distributed across a broad latitudinal gradient and estimated a suite of metrics characterizing phylogeographic history. We found that lower latitude species had, on average, greater phylogeographic diversity than higher latitude species and that intraspecific diversity showed evidence of greater persistence in the tropics. Factors associated with species ecologies, life histories, and habitats explained little of the variation in phylogeographic structure across the latitudinal gradient. Our results suggest that the latitudinal gradient in species richness originates, at least partly, from population-level processes within species and are consistent with hypotheses implicating age and environmental stability in the formation of diversity gradients. Comparative phylogeographic analyses scaled up to large geographic regions and hundreds of species can show connections between population-level processes and broad-scale species-richness patterns.

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Section: Introductionmentioning

confidence: 99%

A latitudinal phylogeographic diversity gradient in birds

et al. 2017

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“…Thrush offers exciting opportunities for future study. For example, information in sound collections may allow one to assess the effect of climate on singing behavior within and 457 across sites; because singing correlates with reproduction, information in sound 458 collections may further be used as a proxy to examine geographic variation in breeding 459 activity and its consequences for population differentiation (Quintero et al 2014). In the 460 long term, sound recordings in collections may allow one to monitor changes in vocal 461 activity patterns and annual phenological cycles in wild bird populations in relation to 462 local and global change.…”

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confidence: 99%

Bird songs on the shelf: assessing vocal activity and output using data hidden in sound archives

Laverde-R.¹,

Caycedo-Rosales²,

Pulgarin-R.³

et al. 2017

Preprint

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“…Geological evidence shows that the NAMS has been in effect since at least 6.3 Ma and its influence on precipitation disparity between Mojave and Sonoran deserts has been operating during the period when 20 of the 25 species diverged. Precipitation asynchrony has been shown to drive genetic divergence in New World birds (Quintero, González‐Caro, Zalamea, & Cadena, ), and Mojave‐Sonoran precipitation asynchrony could initiate differences in behaviour, mating patterns, energy balance and osmotic regulation (Barrows, ; Davis & DeNardo, , ). For example, the Mojave and Sonoran desert tortoises exhibit differences in timing of activity, foraging and reproduction that coincide with seasonal precipitation differences (Esque, Drake, & Nussear, ).…”

Section: Discussionmentioning

confidence: 99%

A legacy of geo‐climatic complexity and genetic divergence along the lower Colorado River: Insights from the geological record and 33 desert‐adapted animals

Dolby

Dorsey

Graham

2019

Journal of Biogeography

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Aim To review the histories of the Colorado River and North American monsoon system to ascertain their effects on the genetic divergence of desert‐adapted animals. Location Lower Colorado River region, including Mojave and Sonoran deserts, United States. Methods We synthesized recent geological literature to summarize initiation phases of lower Colorado River evolution, their discrepancies, and potential for post‐vicariance dispersal of animals across the river. We simulated data under geological models and performed a meta‐analysis of published and unpublished genetic data including population diversity metrics, relatedness and historical migration rates to assess alternative divergence hypotheses. Results The two models for arrival of the Colorado River into the Gulf of California impose east‐west divergence ages of 5.3 and 4.8 Ma, respectively. We found quantifiable river‐associated differentiation in the lower Colorado River region in reptiles, arachnids and mammals relative to flying insects. However, topological statistics, historical migration rates and cross‐river extralimital populations suggest that the river should be considered a leaky barrier that filters, rather than prevents, gene flow. Most markers violated neutrality tests. Differential adaptation to monsoon‐based precipitation differences may contribute to divergence between Mojave and Sonoran populations and should be tested. Main Conclusions Rivers are dynamic features that can both limit and facilitate gene flow through time, the impacts of which are mitigated by species‐specific life history and dispersal traits. The Southwest is a geo‐climatically complex region with the potential to produce pseudocongruent patterns of genetic divergence, offering a good setting to evaluate intermediate levels of geological‐biological (geobiological) complexity.

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

Cited by 30 publications

References 81 publications

A latitudinal phylogeographic diversity gradient in birds

A latitudinal phylogeographic diversity gradient in birds

Bird songs on the shelf: assessing vocal activity and output using data hidden in sound archives

A legacy of geo‐climatic complexity and genetic divergence along the lower Colorado River: Insights from the geological record and 33 desert‐adapted animals

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