A5073532763- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Ichthyology and Marine Biology
- Identification and Quantification in Food
- Aluminum toxicity and tolerance in plants and animals
- Plant Micronutrient Interactions and Effects
- Aquatic Ecosystems and Phytoplankton Dynamics
- Silicon Effects in Agriculture
- Retinal Development and Disorders
- Genetic diversity and population structure
- Parasite Biology and Host Interactions
- Microbial Community Ecology and Physiology
- Aquaculture Nutrition and Growth
- Neurobiology and Insect Physiology Research
- Crop Yield and Soil Fertility
- Soil erosion and sediment transport
- Bat Biology and Ecology Studies
- Environmental Toxicology and Ecotoxicology
- Banana Cultivation and Research
- Cassava research and cyanide
- Helminth infection and control
- Genomics and Phylogenetic Studies
- Plant Taxonomy and Phylogenetics
- Veterinary Equine Medical Research
Universidade Estadual de Maringá
2014-2024
European Union of Medical Specialists
2004-2011
Universidade de São Paulo
2006
Universidade Federal do Tocantins
2006
The molecular mechanisms of plant recognition, colonization, and nutrient exchange between diazotrophic endophytes plants are scarcely known. Herbaspirillum seropedicae is an endophytic bacterium capable colonizing intercellular spaces grasses such as rice sugar cane. genome H. strain SmR1 was sequenced annotated by Paraná State Genome Programme—GENOPAR. composed a circular chromosome 5,513,887 bp contains total 4,804 genes. sequence revealed that highly versatile microorganism with capacity...
Astyanax fishes are among the most important food-web components of South America rivers. In Iguaçu River basin, genus is represented mainly by endemic species. For millions years, that hydrographic basin has been geographically isolated from Paraná Falls. Recently, a species Upper identified as bimaculatus was revised and described new named altiparanae Garutti & Britski, 2000. Fauna endemism geographic isolation triggered interest in investigations to evaluate identification genetic...
Invasive and native populations of the Amazonian fishes ‘peacock bass’ Cichla monoculus a not yet described species ‘blue tucunaré’ here referred as sp. ‘Azul’ were analysed for genetic diversity using hypervariable domain mitochondrial DNA (mtDNA) control region plus steady diagnostic random amplified polymorphic loci. There is no detailed historical record introduction into Upper Paraná River basin, where they became invasive potential threat to local ichthyofauna. Genetic among confirmed...
Brycon is one of the main genera Neotropical freshwater fish.In Brazil, species have been found in many hydrographic basins, such as Amazon, Paraná, Paraguay, and Araguaia-Tocantins basins.We examined phylogenetic relationships among orbignyanus, B. hilarii, cf.pesu, cephalus, falcatus, gouldingi, using mitochondrial nuclear molecular markers.Specimens orbignyanus were collected Paraná River.Specimens hilarii Manso cephalus obtained from a fish farm, ©FUNPEC-RP www.funpecrp.com.br
In this work the genetic divergence among 14 sweet cassava cultivars was estimated by their morphological agronomic traits and RAPD molecular markers. The Tocher cluster analysis Nearest Neighbor Method were applied. most dissimilar Pão Guaíra, Fécula Branca Pão, Caipira, while similar cultivar 1, 3 Guaíra 1. Jaccard's coefficient showed that Quarenta Quilos, Amarela da Rama Cinza. indicated promising crosses could be made between 2 for high divergence, favorable culinary traits, disease...
The current analysis investigates whether the uplift of Serra da Esperança and Ponta Grossa Arch in Geral resulted ichthyofaunistic changes adjacent basins. For this, we describe phylogeographic structure among populations Trichomycterus collected hydrographic basins southern Brazil by using partial nucleotide sequences mitochondrial gene Cytochrome C Oxidase subunit I. Analyses revealed that nomenclature davisi fails to contain whole genetic diversity range found specimens indicates at...
This study aimed to evaluate the genetic variability of B. orbignyanus in cultivated and natural populations Upper Paraná River, using molecular RAPD markers mtDNA control region. Specimens were collected River Piracema fish farm Maringá, State Paraná, Brazil. primers produced 82 loci with consistent expression. The population from showed 28 polymorphic loci, whereas presented only 12. Data revealed differentiation between two populations, although not very pronounced. These results...
Cophylogenetic studies aim at testing specific hypotheses to understand the nature of coevolving associations between sets organisms, such as host and parasites. Monogeneans their hosts provide interesting platform for these due high specificity. In this context, objective present study was establish whether relationship Anacanthorus spp. with from upper Paraná River its tributaries can be explained by means cospeciation processes. Nine fish species 14 monogenean species, most them specific,...
Urocleidoides ectoparasites are mainly found on fish of the neotropical regions. Although molecular research monogeneans is available, no genetic data exist characterizing species in genus. Some DNA sequences have been efficacious systematic studies and reconstruction phylogenies parasites. Relevant roles given to sequence mitochondrial gene cytochrome c oxidase I (COI). This study characterized COI parasites malabaricusi U. cuiabai trahira Hoplias aff. malabaricus flood plain Upper River...
The pteridophytes Salvinia minima, S. herzogii, and auriculata are among the most abundant aquatic macrophytes in upper Paraná River floodplain.Since some species have highly similar morphological features, it is very difficult to identify members of this genus level.An indication difficulty a set poorly differentiated taxa comprising herzogii known as 'S.auriculata complex', which found together with other such biloba S.Genetics Molecular Research 15 (3): gmr.15038575 molesta.Some authors...
Abstract The distribution of Phalloceros species is generally allopatric and restricted; however, harpagos has a wide exhibits morphological variation among populations from different Brazilian river basins. Different delimitation tests using cytochrome C oxidase subunit I gene sequences indicated that P. complex comprises between 7 9 phylogroups. separation the Paraná Paraíba do Sul River basins most likely caused diversification these phylogroups in Miocene period. majority have narrow...
The genetic divergence among invasive and native populations of Plagioscion squamosissimus from four Neotropical hydrographic basins was assessed using the hypervariable domain mitochondrial DNA (mtDNA) control region. is to neighbouring Parnaíba Amazon Rivers, latter includes Araguaia–Tocantins drainage, but it in other due introductions. mtDNA nucleotide polymorphism supported hypothesis that constitute same species are separated into two independent evolutionary lineages. Absence observed...
The introduction of exotic species in lake ecosystems has been greatly highlighted the literature worldwide. Since may threaten diversity native fish, issue turns up to be paramount importance. Ecological effects predation, competition, parasitism or genetic, that is, changes genetic pool populations owing occurrence hybrids. Although Tucunaré fish (Cichla) is Amazon region, it can found other hydrographic basins which introduced. RAPD molecular marker research showed there are two (Cichla...
Cyanobacterias are known as toxin producers. Within the same species, toxic and non-toxic varieties can be found it is impossible to differentiate them only by morphology. The most important produced cyanobacteria microcystin. This protein synthesized a cluster of genes mcy. detection these PCR allows differentiation producing strain from non-producing strain. Thus, goal this work was investigate occurrence toxigenic blooms in Corvo River through amplification mcyA gene. For this, two...
Fish species of the Zungaro genus (Siluriformes, Pimelodidae) are amongst largest migratory fish in Latin America and have considerable economic importance for commercial fishing Brazil.However, natural populations this large catfish experiencing a severe decline.There significant taxonomical inconsistencies fish.Two geographically separated were initially described, one endemic Amazon another Paraná-Paraguay River basins.A taxonomic review had recently proposed that there is only Brazil,...
Invasive Cichla populations in the São João River basin were genetically analysed and compared with from other neotropical hydrographic basins. Polymorphic sequences within mitochondrial DNA D-loop region confirmed introduction of different to regions under analysis. kelberi was introduced Juturnaíba reservoir a downstream area River, monoculus restricted river areas. Results this study will be useful for monitoring invasive coastal since it elucidated taxonomic units an areas downstream.
Mitochondrial molecular markers (DNA sequences of D-loop, cytochrome b and c oxidase I) were employed to characterize populations the piranha Serrasalmus maculatus from Upper Paraná, Paraguay Tocantins River basins. D-loop S. population Paraná-Paraguay basin exhibited tandem repeats short motifs (12 base pairs) variable numbers depending on specimens, accounting for length variation. Concatenated mitochondrial suggested that encompasses different DNA lineages. Although sampling was...
Invasive populations of macrophytes are widely distributed and have been successfully introduced established in freshwater habitats. Hydrilla verticillata was first recorded 2005 the Upper Paraná River floodplain 2007 at Itaipu Reservoir (Brazil-Paraguay border, ca. 300 km downstream from its record). However, genetic variability within different sites South America is unknown. We used nucleotide sequences corresponding to trnL-trnF fragment cpDNA genetically characterize H. ecosystems...
The 5S rDNA gene is informative and has high conservation rates along the eukaryotic genome, having unique hereditary characteristics. Molecular studies with have been carried out several groups, including some species of fish, aiming at solving phylogenetic relationship problems, ancestral patterns genetic diversity among groups in natural populations. Species Cichla genus, introduced Upper Paraná River basin, present polymorphisms detected by RAPD SPAR analyses. These intercrossing forming...
The morphological discrimination between the species Astyanax altiparanae and A. asuncionensis of upper Paraná River Paraguay basins, respectively, has always been difficult. Two D-loop haplogroups are known, one with presence (AltoPR) or absence (AltoPR-D) a 32-bp block similar to that in asuncionensis. We examined these samples characterize verify whether occurred prior submergence Sete Quedas Falls when Itaipu reservoir was impounded. sequences were analyzed Iguaçu Rivers those River....
Abstract In a recent expedition to the rio Grande basin, tributary of Paraná in southern Brazil, individuals armoured catfish genus Hypostomus with peculiar and beautiful colour pattern composed pale vermiculations on head four five horizontal stripes flanks were collected. Initially, specimens identified as morph pale‐spotted H. margaritifer . However, when we compared their partial cytochrome C oxidase subunit I (COI) mitochondrial gene sequences some typically , striped genetically...