Late Neogene megariver captures and the Great Amazonian Biotic Interchange

Global and Planetary Change, Journal Year: 2021, Volume and Issue: 205, P. 103554 - 103554

Published: July 26, 2021

Language: Английский

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Species diversity and biogeography of an ancient frog clade from the Guiana Shield (Anura: Microhylidae:Adelastes,Otophryne,Synapturanus) exhibiting spectacular phenotypic diversification

Biological Journal of the Linnean Society, Journal Year: 2020, Volume and Issue: 132(2), P. 233 - 256

Published: Nov. 23, 2020

Abstract The outstanding biodiversity of the Guiana Shield has raised many questions about its origins and evolution. Frogs genera Adelastes, Otophryne Synapturanus form an ancient lineage distributed mostly across this region. These display strikingly disparate morphologies life-history traits. Notably, is conspicuously adapted to fossoriality only genus within group have dispersed further into Amazonia. Moreover, morphological differences among species suggest different degrees that might be linked their biogeographical history. Through integrative analysis genetic, morphometric acoustic data, we delimited 25 in clade, representing a fourfold increase. We found entire clade started diversify ~55 Mya ~30 Mya. Members probably three times out both before after Pebas system, wetland ecosystem occupying most Western Amazonia during Miocene. Using three-dimensional osteological dataset, characterized high disparity genera. Within Synapturanus, distinct phenotypes emerged concomitantly with dispersals Miocene possibly represent adaptations habitats, such as soils physical properties.

Language: Английский

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Diversity, biogeography, and reproductive evolution in the genus Pipa (Amphibia: Anura: Pipidae)

Molecular Phylogenetics and Evolution, Journal Year: 2022, Volume and Issue: 170, P. 107442 - 107442

Published: Feb. 19, 2022

Language: Английский

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Systematics of the Dendropsophus leucophyllatus species group (Anura, Hylidae) from the Chocó region of Ecuador, with description of a new species

Evolutionary Systematics, Journal Year: 2025, Volume and Issue: 9(1), P. 7 - 31

Published: Feb. 21, 2025

The Dendropsophus leucophyllatus group is composed by 19 species distributed from Central America to the Atlantic Forest of Brazil. Only one known Chocó region, D. ebraccatus , which also in America. Previous studies suggested existence two masked under “ ”. only other lowlands Ecuador gryllatus an elusive never included phylogenetic analyses. In present study, we review systematics both based on morphological, genetic, and bioacoustic data. For analyses, sequenced four mitochondrial genes (12S, 16S, COI, ND1, including flanking tRNAs) nuclear (TYR, POMC). Our results indicate that populations ” represent a new species, not most closely related America, but . inhabits tropical rainforest piedmont evergreen forest NW SW Colombia. Populations differ having larger body size presence hourglass-shaped dorsal mark. differs absence clear band eye, well defined spots distinct advertisement call. Both appear be allopatric and, according our time-tree, diverged each during late Pliocene.

Language: Английский

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New species boundaries and the diversification history of marsh rat taxa clarify historical connections among ecologically and geographically distinct wetlands of South America

Molecular Phylogenetics and Evolution, Journal Year: 2020, Volume and Issue: 155, P. 106992 - 106992

Published: Oct. 21, 2020

Language: Английский

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Marine introgressions and Andean uplift have driven diversification in neotropical Monkey tree frogs (Anura, Phyllomedusinae)

PeerJ, Journal Year: 2024, Volume and Issue: 12, P. e17232 - e17232

Published: April 16, 2024

The species richness in the Neotropics has been linked to environmental heterogeneity and a complex geological history. We evaluated which biogeographic processes were associated with diversification of Monkey tree frogs, an endemic clade from Neotropics. tested two competing hypotheses: Phyllomedusinae occurred either "south-north" or "north-south" direction also hypothesized that marine introgressions Andean uplift had crucial role promoting their diversification. used 13 molecular markers Bayesian analysis infer phylogenetic relationships among 57 estimate divergence times. estimated ancestral ranges based on 12 units considering landscape modifications Neotropical region. found hypothetical ancestor range was probably widespread throughout South America, Western Amazon Southern Atlantic Forest, at 29.5 Mya. Phyllomedusines' must have initially diverged through vicariance, generally followed by jump-dispersals sympatric speciation. Dispersal areas mostly Amazonia towards Northern Andes American diagonal dry landscapes, divergent pattern both hypotheses. Our results revealed process occurring simultaneously orogeny last 30 million years.

Language: Английский

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Phylogenomics, introgression, and demographic history of South American true toads (Rhinella)

Molecular Ecology, Journal Year: 2021, Volume and Issue: 31(3), P. 978 - 992

Published: Nov. 16, 2021

Abstract The effects of genetic introgression on species boundaries and how they affect species’ integrity persistence over evolutionary time have received increased attention. increasing availability genomic data has revealed contrasting patterns gene flow across regions, which impose challenges to inferences relationships admixture lineages. By characterizing variation thousands loci in a widespread complex true toads ( Rhinella ), we assess the extent thought hybridize extreme degrees based natural history observations multilocus analyses. Comprehensive geographic sampling five large‐ranged Neotropical taxa multiple distinct lineages that span large areas and, at times, biomes. inferred major clades clusters largely correspond currently recognized taxa; however, also found evidence cryptic diversity within taxa. While previous phylogenetic studies extensive mitonuclear discordance, our clustering analyses uncovered several admixed individuals groups. Accordingly, historical demographic supported these involved cross‐taxon both ancient recent times. Lastly, ABBA‐BABA tests allele sharing boundaries, pattern can be confidently attributed as opposed incomplete lineage sorting. These results confirm assertions was characterized by various levels hybridization even environmentally heterogeneous posing exciting questions about what factors prevent complete fusion diverging yet highly interdependent

Language: Английский

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Skipping the Dry Diagonal: spatio-temporal evolution ofCrotonsectionCleodora(Euphorbiaceae) in the Neotropics

Botanical Journal of the Linnean Society, Journal Year: 2021, Volume and Issue: 197(1), P. 61 - 84

Published: Jan. 23, 2021

Abstract Croton is one of the largest angiosperm genera, with > 1200 species in tropics worldwide. The arborescent section Cleodora stands out for its disjunct geographical distribution two main centres diversity Amazonian and Atlantic Forest regions, separated by Caatinga, Cerrado Chaco biomes (the ‘Dry Diagonal’). This disjunction found other Neotropical lineages attributed to Neogene geological climatic events. We inferred a nearly complete phylogenetic reconstruction based on DNA sequences nuclear ITS five plastid regions (rps16, trnH-psbA, trnL-F, trnT-L ycf1). further estimated divergence times reconstructed ancestral ranges using Bayesian methods. Our results show that monophyletic clades; we also confirm adscription eight spp. recently described or assigned morphology. Divergence from sister clade occurred c. 25 Mya, diversification within this group started 20 Mya. Biogeographic analyses suggest originated region, where it dispersed forested including Forest. between taxa appears have been triggered formation South American Dry Diagonal.

Language: Английский

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Phylogenetics, biogeography, and life history evolution in the broadly distributed treefrog genus Dendropsophus

Molecular Phylogenetics and Evolution, Journal Year: 2024, Volume and Issue: 204, P. 108275 - 108275

Published: Dec. 25, 2024

Language: Английский

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Diversification of the Pristimantis conspicillatus group (Anura: Craugastoridae) within distinct neotropical areas throughout the Neogene

Systematics and Biodiversity, Journal Year: 2022, Volume and Issue: 20(1), P. 1 - 16

Published: Oct. 19, 2022

Determining the relative importance of dispersal and vicariance events across neotropical regions is a major goal in biogeography. These are thought to be related important landscape changes, notably transition Amazonia toward its modern hydrological configuration ca. 10 million years ago. We investigated spatio-temporal context diversification one lineages Pristimantis, widespread large genus direct-developing Neotropical frogs. gathered spatially taxonomically extensive sampling mitochondrial DNA sequences from 754 Pristimantis gr. conspicillatus specimens, which led delimiting 75 Operational Taxonomic Units (OTUs). Complete mitogenomes 35 these OTUs were assembled collated with two nuDNA loci reconstruct time-calibrated phylogeny. identified five clades that diverged around Oligocene-Miocene largely restricted distinct i.e. Western (P. clade), Brazilian Shield fenestratus Atlantic Forest ramagii Guiana vilarsi clade) northern Andes nicefori clade). The majority within occurred in-situ early Miocene onward. Yet, few ancient dispersal/vicariance inferred have among trans-Andean forests, Forest, Shields, but almost none last Ma. radical transformations during caused by Andean orogeny barriers such as Pebas System subsequent transcontinental Amazon drainage likely explanation for isolation different P. conspicillatus.

Language: Английский

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