A5024769896- Genetic diversity and population structure
- Crustacean biology and ecology
- Plant and animal studies
- Plant Parasitism and Resistance
- Coral and Marine Ecosystems Studies
- Plant Diversity and Evolution
- Fish Ecology and Management Studies
- Marine Biology and Ecology Research
- Animal Behavior and Reproduction
- Fish Biology and Ecology Studies
- Marine and fisheries research
- Aquaculture Nutrition and Growth
- Molecular Biology Techniques and Applications
- Environmental Toxicology and Ecotoxicology
- Marine and coastal plant biology
- Identification and Quantification in Food
- RNA Research and Splicing
- Aquaculture disease management and microbiota
- Pharmaceutical and Antibiotic Environmental Impacts
- Insect Resistance and Genetics
- Turtle Biology and Conservation
- Physiological and biochemical adaptations
- Mosquito-borne diseases and control
- Animal Genetics and Reproduction
- Insect Pest Control Strategies
University of Chile
2015-2025
Institute of Ecology and Biodiversity
2014-2020
Universidad Católica del Norte
2020
Pollution and its effects have been of major concern in recent decades. Many strategies markers developed to assess their on biota. Cytochrome P450 (CYP) genes received significant attention this context because relationship with detoxification activation exogenous compounds. While expression has identified as a pollution exposure biomarker, most cases, it tested only after acute exposures for CYP associated To elucidate gene patterns under chronic exposure, we used the silverside...
Mosquitoes from the Culex pipiens complex are found worldwide and have been focus of numerous studies due to their role as vectors human pathogens. We investigated population genetic structure Cx. s.l. by analyzing SNPs COI gene, focusing on grouping signals ecotypes molestus. Our analysis revealed no association between SNPs, suggesting that classification is based ecological traits rather than factors. Using data 2,641 164 genotypes, our Bayesian clustering categorized populations into six...
Abstract To understand the role of gene expression in adaptive variation, it is necessary to examine variation an ecological context. Quantitative real-time PCR (qPCR) considered most accurate and reliable technique measure validate data obtained by RNA-seq; however, normalization crucial. In Chile, freshwater silverside fish Basilichthys microlepidotus inhabits both polluted nonpolluted areas, showing differential related pollution. this study, we infer stability six potential reference...
Abstract The Maipo River catchment is one of Chile’s most polluted basins. In recent decades, discharges untreated sewage and organic matter have caused eutrophication water quality degradation. We employed the indigenous silverfish species Basilichthys microlepidotus as a model organism to investigate process adaptation selection on genes influenced by pollution. Using variation at single nucleotide polymorphisms (SNPs), we determined temporal stability population structure patterns...
Abstract How organisms adapt to unfavorable environmental conditions by means of plasticity or selection favorable genetic variants is a central issue in evolutionary biology. In the Maipo River basin, fish Basilichthys microlepidotus inhabits polluted and non-polluted areas. Previous studies have suggested that directional drives genomic divergence between these areas 4% Amplified Fragment Length Polymorphism (AFLP) loci, but underlying genes functions remain unknown. We hypothesized B....
Abstract Elucidating the processes responsible for maintaining population connectivity of marine benthic species mediated by larval dispersal remains a fundamental question in ecology and fishery management. Understanding these becomes particularly important areas with biogeographic break unidirectional water movement along sides break. Based on variability at 4209 single-nucleotide polymorphisms 234 individuals, we determine genetic structure, temporal stability, gene flow among populations...
In order to study fishery stocks and the effect of male-biased on multiple paternity, new genetic resources were developed for Metacarcinus edwardsii, most important crab artisanal in Chile. A total eight microsatellite loci isolated characterized this crab, using an enriched library. Six 27 alleles per locus observed two samples 24 individuals. The heterozygosity ranged from 0.58 1.00 all showed no deviation Hardy–Weinberg equilibrium either. Two sampling sites separated by 300 km...
Marine species may exhibit genetic structure accompanied by phenotypic differentiation related to adaptation despite their high mobility. Two shape-based morphotypes have been identified for the green turtle ( Chelonia mydas ) in Pacific Ocean: south-central/western or yellow and north-central/eastern black turtle. The between these of environmentally contrasting conditions eastern region has remained a mystery decades. Here we addressed both questions using reduced-representation genome...
Abstract The complete sequence of the mitochondrial genome and fifteen microsatellite loci for Chilean kelp crab Taliepus dentatus are reported first time. DNA assembly obtained from an Illumina sequencing revealed a 15 603 bp in length. gene composition arrangement were similar to that most decapod crabs, containing 13 protein-coding genes, 22 transfer RNA two ribosomal genes non-coding region. A phylogeny performed with 10 species GenBank placed T. close individuals Family Epialtidae. From...
Human activity has caused a deterioration in the health and population size of riverine species; thus, public policies have been implemented to mitigate anthropogenic impacts water use, watercourse transformation, pollution. We studied Maipo River Basin, one most polluted with untreated wastewater Chile, for period 12 years (2007-2019). Since implementation new policies, including operation collector (2012), Basin is currently much less by than before. To analyze impact reduction this river...
For marine invertebrates with a benthic adult form and planktonic larva phase, the connectivity among populations is mainly based on larval dispersal. While an extended phase will promote gene flow, other factors such as intensive fishery geographical barriers could lead to changes in genetic variability. In this study, population structure of commercial crab Metacarcinus edwardsii was analyzed along 700 km Chilean coast. The analysis, eight microsatellite loci genotyped from megalopae...
Abstract The presence of a dam disturbs river flow, which in turn directly affects the communities and evolutionary potential riverine species. To detect ecological effects on genetic diversity, structure, their progress time, two fishes living upstream downstream an irrigation reservoir were studied at periods after its construction 2004 central Chile. Samples Neotropical silverside Basilichthys microlepidotus pencil catfish Trichomycterus areolatus obtained 2 7 years Corrales Dam was...
Most benthic marine invertebrates with sedentary 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 distant islands. In the present study, we analyzed population genetic structure sea urchin Centrostephanus sylviae , which inhabits only Juan Fernández Archipelago Desventuradas islands, separated by more than 800 km. For...
Abstract The effects of habitat degradation remain not fully understood. A recent study reported low on plant genetic diversity but indicates that reduction in quality could impact it as well gene flow indirectly via ecological interactions. Selective logging is a way degradation, studies examining its non‐logged forest species are relatively scarce. Using 3470 single‐nucleotide polymorphisms, we assess the different selective intensities 66 individuals keystone mistletoe ( Tristerix...
Genetic differentiation depends on ecological and evolutionary processes that operate at different spatial temporal scales. While the geographical context is likely to determine large-scale genetic variation patterns, habitat disturbance events will probably influence small-scale diversity gene flow patterns. Therefore, patterns we observe today result from combination of both processes, but they are rarely assessed simultaneously. We determined population structure a hemiparasitic mistletoe...
Marine heatwaves (MHW) pose an increasing threat and have a critical impact on meroplanktonic organisms, because their larvae are highly sensitive to environmental stress key for species' dispersion population connectivity. This study assesses the effects of MHW two moulting cycle periods within first zoea valuable crab, Metacarcinus edwardsii. First, changes in swimming behaviour during I were recorded associated moult substages. Then, exposed (1) control temperature 12 °C, (2) Early MHW,...
<title>Abstract</title> The paternity patterns observed in decapods reflect the mating strategies and tactics employed by different species. However, these may be altered fishery management, particularly through male-biased harvesting, which affects natural sex ratio subsequently influences success reproductive success. This study examined of kelp crab Taliepus dentatus, revealing that, unlike other majid crabs, T. dentatus demonstrates a single pattern, apparently unaffected fishing...