Publications by authors named "Pablo Fibla"
Article Synopsis
- Desert aquatic species often have separated populations because of their fragmented environments, but geography and humidity can aid their movement.
- This study examined how the shape of river drainage systems affects the genetic diversity and movement of a specific frog species in the Atacama Desert.
- Findings revealed three genetic clusters based on river basins, indicating that populations within the same drainage have more gene flow between them, suggesting that the river structure and regional humidity impact their genetic relationships.
Article Synopsis
- Telmatobius is the most diverse group of frogs in the Andean highlands, with a complicated taxonomy due to large variations within species.
- The study focuses on T. marmoratus, which has a broad distribution but is not fully understood, aiming to clarify its species complexities using DNA analysis techniques.
- Results indicate the presence of 7 distinct lineages and 6-10 potential new species within the marmoratus complex, revealing a complex evolutionary history related to ancient water connections in the region.
Most benthic marine invertebrates with sedentary benthic adult phases have planktonic larvae that permit connectivity between geographically isolated populations. Planktonic larval duration and oceanographic processes are vital to connecting populations of species inhabiting remote and distant islands. In the present study, we analyzed the population genetic structure of the sea urchin Centrostephanus sylviae, which inhabits only the Juan Fernández Archipelago and the Desventuradas islands, separated by more than 800 km.
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- Telmatobius halli, the first endemic species from Chile described in 1938, has only the original specimens with no additional finds despite many expeditions.
- A review of the expedition by F. G. Hall suggests that the species may actually originate from a location near Collahuasi, not Ollagüe as previously thought.
- Morphological and phylogenetic analyses confirm that T. halli is part of a distinct monophyletic group, leading to the recommendation to redefine its type locality to the Copaquire ravine area in the high Andes of the Tarapacá region.
Article Synopsis
- The genus Telmatobius is a diverse group of amphibians found in high-altitude Andean areas, with several species in Chile being endangered or critically endangered.
- Researchers identified and analyzed 44 microsatellite markers from 80 individuals across 8 species, successfully obtaining 22 functional markers for Telmatobius chusmisensis.
- These microsatellite markers are essential for future genetic studies, helping in understanding population dynamics and aiding conservation efforts for the endangered Telmatobius species.
Article Synopsis
- The study assessed the taxonomic identities of two species of Andean frogs, Telmatobius pefauri and T. zapahuirensis, using molecular and morphological data.
- It found that T. pefauri is distributed not just at its known type locality, Murmuntani, but also in several other locations in the region.
- The findings concluded that T. pefauri and T. zapahuirensis are actually the same species, making the latter a junior synonym of the former.
Article Synopsis
- The Andean Altiplano has historically influenced species diversification, particularly in the Telmatobius marmoratus complex, which we studied using genetic variability and migration patterns based on the cytochrome b gene.
- We found four main genetic clades, with significant connections among Telmatobius gigas, T. marmoratus, and T. culeus, indicating complex evolutionary relationships and weaker geographic structure than expected.
- Analysis highlights that protected areas in Chile conserve over half of the phylogenetic diversity (PD) of T. marmoratus, while unprotected populations are also significant for overall diversity, pointing to the impact of recent climatic changes on species connectivity and population dynamics.