A5045182871- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Genetic diversity and population structure
- Identification and Quantification in Food
- Fish Ecology and Management Studies
- Ichthyology and Marine Biology
- Genomics and Phylogenetic Studies
- Chromosomal and Genetic Variations
- Peanut Plant Research Studies
- Animal Genetics and Reproduction
- Agricultural pest management studies
- Aquaculture Nutrition and Growth
- Infective Endocarditis Diagnosis and Management
- Plant and soil sciences
- Genetic and phenotypic traits in livestock
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Parasite Biology and Host Interactions
- Streptococcal Infections and Treatments
- Coconut Research and Applications
- Reproductive biology and impacts on aquatic species
- CRISPR and Genetic Engineering
- Dental Anxiety and Anesthesia Techniques
- Water Quality and Pollution Assessment
- Lichen and fungal ecology
- Silkworms and Sericulture Research
Centro Uruguayo de Imagenología Molecular
2013-2025
Universidad de la República
2013-2024
Universidad La República
2002-2024
Catalan Society of Family and Community Medicine
2023
Universidad de la Empresa
2018
Evolva Holding (United States)
2011
North Carolina State University
1995-2006
Observatorio Astronómico Los Molinos
2004
Universidad Nacional de La Plata
2004
Instituto de Biomedicina y Genética Molecular de Valladolid
1993
Two dominant genes conditioning resistance to the root-knot nematode Meloidogyne arenaria were identified in a segregating F 2 population derived from cross of 4x (Arachis hypogaea × Arachis cardenasii)-GA 6 and PI 261942. Mae is proposed as designation for gene restricting egg number Mag galling. The high levels GA introgressed A. cardenasii and, therefore, search identify specific RAPD markers that are tightly linked these was conducted utilizing bulked segregant analysis. One marker...
Forty-six introgression lines (F10C9) from a cross between Arachis hypogaea L. (2n = 4x 40) and A. cardenasii Krapov. & W. C. Gregory 2x 20) were analyzed for the of chromosome segments. Seventy-three RFLP probes 70 RAPD primers, expressing one to four cardenasii-specific bands, used evaluate set lines. Thirty-four 45 primers identified putative introgressed segments in or more Introgressed detected by analysis 10 11 linkage groups; smallest fragments single markers largest three adjacent...
ABSTRACT Rhamdia quelen is a catfish widely distributed throughout South America, characterized by complex taxonomic history. This species valuable resource for both fisheries and aquaculture. Due to its cultural economic importance, it has been prioritized conservation in the Neotropical region. Population genomics studies supported two main lineages latitudinally (North South) basins Río de la Plata Laguna Merín based on current genetic isolation signals of local adaptation. In this study,...
ABSTRACT The family Rivulidae is the fourth most diverse clade of Neotropical fishes. Together with some genera related African Nothobranchiidae, many rivulids exhibit a characteristic annual life cycle, diapausing eggs and delayed embryonic development, which allows them to survive in challenging seasonal ponds that they inhabit. also includes two species known as only self-fertilizing vertebrates internal fertilization. first goal this article review systematics considering phylogenetic...
Abstract This article documents the addition of 268 microsatellite marker loci to M olecular E cology R esources D atabase. Loci were developed for following species: A lburnoides bipunctatus, C hamaerops humilis, hlidonias hybrida, yperus papyrus, F usarium graminearum, L oxigilla barbadensis, acrobrachium rosenbergii, O dontesthes bonariensis, P elteobagrus vachelli, osidonia oceanica, otamotrygon motoro, hamdia quelen, S arotherodon melanotheron heudelotii, ibiraea angustata, T akifugu...
Abstract A molecular linkage map based on an interspecific diploid backcross population [Arachis stenosperma × (A. A. cardenasii)] was constructed utilizing RAPD and RFLP markers. One hundred sixty-seven loci 39 RFLPs were mapped to 11 groups, covering a total genetic length of 800 cM. Clusters 2 to18 markers observed in most groups. Twenty seven percent the showed segregation distortion four regions. Thirty-nine shared with previously published map, cardenasii F2 population, six used...
The annual killifish genus Austrolebias includes approximately 38 species distributed throughout the Paraná-Plata basin and Patos-Merín system. Within adloffi complex, Uruguayan populations of charrua were considered as an intergradation between A. viarius populations. presents intermediate phenotype both taxa high levels morphological chromatic variability. In present study, we incorporate different methodological approaches (molecular, morphology, gamete ultrastructure) to elucidate...
Abstract Aim To elucidate the role of vicariance versus dispersal at microevolutionary scale in annual killifish populations belonging to Austrolebias bellottii species complex (Rivulidae). Within this complex, A. and apaii have low vagility occur widely within study area, making them excellent models for testing biogeographic hypotheses differentiation. Location South America, Paraná–Uruguay–La Plata river basin. Methods Molecular data morphometric analyses were used reconstruct...
The European wild boar Sus scrofa was first introduced into Uruguay, in southern South America during the early decades of last century. Subsequently, and starting from founder populations, its range spread throughout country neighbouring Brazilian state Rio Grande do Sul. Due to subsequent negative impact, it officially declared a national pest. main aim present study provide more comprehensive scenario differentiation by using mtDNA markers access genetic characterization populations at...
Phylogenetic relationships based on 324 base pairs of the mitochondrial cytochrome b gene were examined in 14 species genus Cynolebias. The monophyly relative to three outgroup taxa belonging family Rivulidae was supported by sequence data. Bootstrap values corroborated existence intrageneric monophyletic units both parsimony and Neighbour-joining analyses. These include a Cynolebias bellottii-C. wolterstorffl clade, C. adloJfi-2, duraznensis, viarius C adloffi-1 group, gymnoventris,...
The present paper integrates phylogenetic and population genetics analyses based on mitochondrial nuclear molecular markers in silversides, genus Odontesthes, from a non-sampled area the SW Atlantic Ocean to address species discrimination define Managements Units for sustainable conservation. All COI gene were consistent support monophyly of Odontesthes include O. argentinensis, perugiae-humensis some bonariensis haplotypes basal polytomy conforming major derivative clade. Microsatellites...
Abstract Background The irruption of Next-generation sequencing (NGS) and restriction site-associated DNA (RAD-seq) in the last decade has led to identification thousands molecular markers their genotyping for refined genomic screening. This approach been especially useful non-model organisms with limited resources. Many building-loci pipelines have developed obtain robust single nucleotide polymorphism (SNPs) datasets using a de novo RAD-seq approach, i.e. without reference genomes. Here,...
This article analyzes the available morphological (morphometric, meristic, and coloration patterns) molecular evidence that supports taxonomic validity of Austrolebias reicherti. The species can be differentiated from A. charrua Costa & Cheffe, recently proposed as a senior synonym (Costa 2006), by following combination characters (characters in parenthesis): 1) origin dorsal fin anterior to anal (origin posterior fin), 2) 18 24 caudal rays (23–26), 3) black supraorbital band well...
Austrolebias wichi, new species, is herein described from seasonal ponds of the Bermejo river basin in Western Chacoan district northwestern Argentina. This species was found a single pond, paleochannel River, which seriously disturbed by soybean plantations surrounding it. Despite intensive sampling area, this only registered pond where it relatively scarce. Therefore, we consider as critically endangered. sister A. patriciae our phylogenetic analyses and similar, general external aspect,...
The genus Cynolebias (Cyprinodontiformes: Rivulidae) is a locally endemic and speciose group of Neotropical fishes with an annual life cycle. Members the vary greatly in morphology behaviour, extensive interspecific karyotypic divergence has been documented among species from Uruguay, Argentina Rio Grande do Sul, Brazil. We present molecular systematic hypothesis relationships between these based on phylogenetic analysis combined dataset containing 1825 base pairs DNA sequence, representing...
Pimelodus albicans Valenciennes, 1840 (common name "moncholo" or "bagre blanco") is an endemic species of the family Pimelodidae in río de la Plata basin. Phylogenetic approach based on cytochrome b sequences was performed to test existence a unique evolutionary lineage P. and discriminate populations units subpopulations related migration behavior this taxon This study included 34 samples different collecting sites estuary Arrecifes belonging Paraná Among 614 base pairs sequence data set,...
Rhamdia quelen, a Neotropical fish with hybridization between highly divergent mitochondrial DNA (mtDNA) lineages, represents an interesting evolutionary model. Previous studies suggested that there might be demographic differences coastal lagoons and riverine environments, as well populations could reproductively isolated. Here, we investigated the genetic diversity pattern of this taxon in Southern Basin system includes La Plata Basin, Patos-Merin lagoon basin draining to SW Atlantic...
High levels of variation in chromosome numbers and N. F. s from 48-80. C-banding analysis allowed us to detect C-positive regions three positions: centromeric, telomeric interstitial. A differential pattern was found each species. These banding patterns can be interpreted as a result namely pericentric inversions centric fusions occuring alternatively during the karyotypic reorganization these species.The 17 specimens Cynolebias using silver stain NOR technique showed 3-6 rDNA active among...