Rosana Zenil‐Ferguson

Novel models of trait evolution via an expansion of Lande's fitness function: The Ornstein-Uhlenbeck process meets the Little Prince's boa

José Miguel Ponciano, Claire Godineau, Laura Jimenez, Nicholas Kortessis et autres

Adaptive topographies form the foundation for much of our understanding of evolutionary change. Lande's 1976 influential paper on the adaptive topography of phenotypes demonstrated how the concept is inherent in both phenotypic and genetic models of evolution, and how the concept can …

Abiotic Factors and Competitive Exclusion Drive Assembly Patterns in Two Insular Gecko Adaptive Radiations Displaying Ecomorphological Convergence

Phillip L. Skipwith, Nicolás Castillo-Rodríguez, Rosana Zenil‐Ferguson

Adaptive radiation theory posits that speciation in such lineages is largely driven by ecological opportunity in concurrent morphological expansion in response to niche availability. Here, we use a phylogenomic estimate of Australasian diplodactyloid geckos in combination with meristic and ecological data to …

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Mutualistic microbes drive niche expansion yet constrain diversification

Eleanor Hay, Rosana Zenil‐Ferguson, Michelle E. Afkhami, Christopher A. Searcy

Mutualistic interactions are widely hypothesized to expand ecological niches and promote diversification, yet evidence for this relationship at macroevolutionary scales remains limited. Here, we investigate how fungal seed endophytes (Epichloe) influence niche breadth and diversification across over 100 species of the globally-distributed …

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The role of abiotic factors and competitive exclusion in the assembly patterns of two insular gecko radiations displaying ecomorphological convergence

Phillip L. Skipwith, Nicolás Castillo-Rodríguez, Rosana Zenil‐Ferguson

Abstract Adaptive radiation theory posits that speciation is largely driven by ecological opportunity with correlated morphological expansion in response to niche availability. We use a phylogenomic estimate of Australasian diplodactyloid geckos in combination with meristic and ecological data to infer patterns of …

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An Evolving View of Lineage Diversification

Pascal O. Title, L. Francisco Henao‐Díaz, Rosana Zenil‐Ferguson, Thaís Vasconcelos

Systematists have long been fascinated by the astounding variation in species diversity across the various branches of the tree of life, a net result of the uneven rates at which lineages undergo speciation and extinction over time. The past 30 years have …

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Widespread evolution of poricidal flowers: a striking example of morphological convergence across flowering plants

Avery L. Russell, Rosana Zenil‐Ferguson, Diana D. Jolles, Ricardo Kriebel et autres

The evolution of tube-like floral morphologies that control pollen release via small openings (functionally poricidal flowers) represents a taxonomically and geographically widespread instance of repeated and independent evolution of a functionally similar morphology. Poricidal flowers are also often closely associated with buzz …

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Magnolia tapichalacaensis (M. sect. Splendentes, Magnoliaceae), a new species from the Andean foothills of Zamora Chinchipe, Ecuador

Álvaro J. Pérez, Edison Rea, Jennifer Martínez González-Quevedo, FANNY HIDALGO et autres

Magnolia tapichalacaensis is described from the cloud forest remnants of Quebrada Honda, Tapichalaca Reserve in the Zamora Chinchipe Province, south-east Ecuador. This species is characterized by its tomentose leaves and hypsophyll, flowers 5.6–7.5 cm in diameter with three sepals that are abaxially …

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Multiple bursts of speciation in Madagascar’s endangered lemurs

Kathryn Everson, Luca Pozzi, Meredith Barrett, Mary E. Blair et autres

Lemurs are often cited as an example of adaptive radiation, as more than 100 extant species have evolved and filled ecological niches on Madagascar. However, recent work suggests that lemurs lack a hallmark of other adaptive radiations: explosive speciation rates that decline …

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The macroevolutionary consequences of the association between frugivory and carotenoid-dependent plumage coloration in passerine birds

Verónica A Rincón-Rubio, Rosana Zenil‐Ferguson, Alejandro González‐Voyer

Biotic interactions influence evolutionary pathways, impacting diversification positively and negatively. Here, we examine the coevolutionary dynamics between frugivorous diets and carotenoid-dependent plumage coloration in passerine birds-a highly diverse order in which nearly half of species exhibit carotenoids in their plumage. Plumage coloration …

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Macroevolutionary inference of complex modes of chromosomal speciation in a cosmopolitan plant lineage

Carrie M. Tribble, José Ignacio Márquez‐Corro, Michael R. May, Andrew L. Hipp et autres

The effects of single chromosome number change-dysploidy - mediating diversification remain poorly understood. Dysploidy modifies recombination rates, linkage, or reproductive isolation, especially for one-fifth of all eukaryote lineages with holocentric chromosomes. Dysploidy effects on diversification have not been estimated because modeling chromosome …

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Simpson's tachytely or bradytely? The importance of quantifying rate uncertainty

Rosana Zenil‐Ferguson, Lee Hsiang Liow

Abstract The spectacular variation in species forms and richness across space and time can be explored using sophisticated and powerful tools recently developed by evolutionary modellers. In this contribution, we ask if the classic ‘Simpsonian’ view of tachytelic (fast), horotelic (standard) and …

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Detecting shifts in the mode of chromosomal speciation across the cosmopolitan plant lineage Carex

Carrie M. Tribble, José Ignacio Márquez‐Corro, Michael R. May, Andrew L. Hipp et autres

Data and code for the manuscript "Detecting shifts in the mode of chromosomal speciation across the cosmopolitan plant lineage Carex".