Unraveling the variability and genetic structure of barker frog Physalaemus cuvieri (Leiuperinae) populations from different regions of Brazil

Conte, Marcelo; Targueta, Cíntia Pelegrineti; Zucchi, Maria Imaculada; Souza, Anete Pereira de; Recco‐Pimentel, Shirlei Maria

doi:10.4238/2014.february.21.4

Cited by 1 publication

(2 citation statements)

References 38 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite the expansion during glacial periods, the coalescent tree and the lineage dispersal analysis suggest an ancient regional differentiation process, without a posterior secondary contact after c. 600 ka. Compared to other anurans species such as Leptodactylus fuscus (Camargo et al, 2006) and Physalaemus cuvieri (Conte et al, 2014;Miranda et al, 2019), S. squalirostris showed higher genetic differentiation. Amphibians generally have low dispersal ability and vagility (Hillman et al, 2014); therefore, their populations are often genetically structured (Vences & Wake, 2007).…”

Section: Discussionmentioning

confidence: 70%

“…600 ka. Compared to other anurans species such as Leptodactylus fuscus (Camargo et al, 2006) and Physalaemus cuvieri (Conte et al, 2014; Miranda et al, 2019), S. squalirostris showed higher genetic differentiation. Amphibians generally have low dispersal ability and vagility (Hillman et al, 2014); therefore, their populations are often genetically structured (Vences & Wake, 2007).…”

Section: Discussionmentioning

confidence: 87%

See 1 more Smart Citation

Neogene–Quaternary tectonic, eustatic and climatic events shaped the evolution of a South American treefrog

Lima

Jardim

Maciel

et al. 2023

Journal of Biogeography

View full text Add to dashboard Cite

Aim Understanding how past geological and climatic events could have generated intraspecific genetic variation at different temporal and spatial scales in the Neotropics requires a model encompassing distinct ecoregions. Because Anura species have their evolutionary history affected by climate and environmental changing, it is a suitable model to investigate the signatures of Neotropical historical events in species populations. Here we used a treefrog species to test hypotheses associated with tectonic, eustatic and climatic events along with isolation‐by‐environment and isolation‐by‐distance spatial patterns in genetic diversity. Taxon Scinax squalirostris (Lutz, 1925), Anura: Hylidae. Location Atlantic Forest, Cerrado, Chaco, Uruguayan Savanna and Pampas ecoregions in South America. Methods We sequenced nuclear and mitochondrial data from 219 individuals of S. squalirostris sampled at 26 locations in South America. We performed statistical phylogeographic analyses and reconstruction of spatiotemporal dispersal dynamics. Ecological niche modelling was conducted to predict spatial changes in environmental suitability from the Last Glacial Maximum to the Holocene and present day. Results We recovered a significant phylogeographic break roughly dated back to the Miocene (~7.6 Ma), coinciding with the retraction of marine incursions in the Paraná basin. Most dispersal events occurred in cooler periods of the Pliocene–Pleistocene transition. The spatial pattern in genetic diversity was not correlated with geographical distance or environmental variables. Main Conclusions Scinax squalirostris had a quasi‐stable distribution through time. Neogene–Quaternary tectonic, eustatic and climatic events drove the demographic history and dispersal dynamics of species, with a phylogeographical break dated to the Miocene coinciding with retractions of marine incursions in the Paraná basin. Lineage dispersal spread from the southern Atlantic Forest and retrieved gene flow signals congruent with the cold periods of the Pliocene and Pleistocene.

show abstract