Molecular phylogenetic studies are very scarce for the Mugilidae family; present analysis using DNA sequences of mitochondrial 16S rRNA and cytochrome b genes is first study involving Brazilian mugilids. The results corroborate monophyly Mugil elucidative taxonomy curema clearly divided into two genetically distinct taxa, M. type I being closer related to hospes true (type II) grouping significantly with incilis. also suggest that liza platanus should be treated as a single species or even...

Abstract The Golfão Maranhense is an extensive estuarine complex that provides nursery grounds and other habitats for several fish species, as well a wealth of resources the coastal artisanal fisheries Maranhão state, in northern Brazil. present study comprehensive inventory marine teleost fishes based on field samplings, analyses voucher specimens from local collections literature data. This presents total 163 species teleosts belonging to 107 genera, 57 families 27 orders. order...

The 16 species of Molossus (Chiroptera: Molossidae) are distributed throughout the Neotropical region and can be classified into two groups: one consisting morphologically similar yet phylogenetically divergent species, another distinct but closely related species. This dynamic has led to frequent revisions in systematics taxonomy this genus. study aimed analyze patterns diversification cranial shape size within using geometric morphometrics (GM), integrating genetic morphological data. A...

Pimelodus is the most speciose genus of family Pimelodidae, and amply distributed in Neotropical region. The species-level taxonomy phylogenetic relationships within this are still poorly resolved, however. These taxonomic problems general lack data have generated major uncertainties with regard to identification specimens from different localities. In present study, we applied a single-locus species delimitation approach identify MOTUs found provide sound evidence for evaluation richness...

Abstract Background Cervical cancer is the fourth most common type of affecting women globally. In Brazil, it third frequent in and HPV present approximately 90% cases. Evidence suggests that variants 16 can interfere biologically etiologically during development cervical cancer. Methods Cervix tumor fragments were collected, their DNA was extracted, nested PCR used to detect HPV. Positive samples sequenced determine viral genotype. To characterize strains, positive amplify LCR E6 regions...

Leporinus is one of the most speciose genera order Characiformes, with 81 valid species distributed throughout much Central and South America. The considerable diversity this genus has generated extensive debate on its classification internal arrangement. In present study, we investigated in central northern Brazil, conclude that six species— maculatus , unitaeniatus affinis venerei cf. friderici piau —are found hydrographic basins Brazilian states Maranhão, Piauí, Tocantins. We analyzed 182...

Abstract The fish fauna of the Tocantins River possesses many endemic species; however, it is little studied in molecular terms and quite threatened by construction several hydroelectric dams. Therefore, objective this study was to identify ichthyofauna using DNA barcoding. For this, collections were carried out five points river, which resulted capture 725 individuals from partial sequences cytochrome oxidase subunit I (COI) gene obtained for genetic analysis. A total 443 haplotypes...

ResumoOs ciclídeos, peixes economicamente importantes na região, foram coletados no médio rio Negro (Cichla orinocensis, C. monoculus e temensis) iIlha da Marchantaria (C.monoculus), Amazonas em três açudes do Piauí (C.kelberi).Para verificar a ocorrência de parasitas as brânquias, narinas intestino removidos observados microscópio esteroscópio, boca olho

Abstract Didelphis albiventris are found throughout Northeast and Central Brazil to central-southern Uruguay it was subject of few studies in a population level. Given this, the present study investigated genetic variability species using mitochondrial molecular marker cytochrome oxidase c subunit I. We analyzed samples from different biomes within three Brazilian regions: (Caatinga , Cerrado, Atlantic Forest), Southeast (Cerrado Forest, Cerrado/Atlantic Cerrado/Caatinga ecotones) South...

Abstract In Brazil, 179 bat species have been recorded to date, representing 68 genera and nine families. Few data are available on the fauna of state Maranhão, so present study was based a survey Inhamum Municipal Environmental Protection Area (APA Inhamum) in Cerrado savanna eastern extreme state. This inventory provides new records for Maranhão biome. A total 31 (four families) were collected, 39% known occur 28.71% described Cerrado. The family Phyllostomidae most diverse, with 23...

Abstract The trahira or wolf fish - Hoplias malabaricus- is a valid species, although recent cytogenetic and molecular studies have indicated the existence of species complex. In this context, present study analyzed mitochondrial COI marker to determine levels genetic diversity specimens from Brazilian state Maranhão, verify occurrence distinct lineages within area. Samples were collected basins Turiaçu, Pindaré, Mearim, Itapecuru, Parnaíba rivers. A 630-bp fragment was obtained 211...

The species M. melini has been observed in both the Pampa and Spinal ecoregions of Argentina. Researchers have underscored that distinguishing from other within same genus relies primarily on craniometric molecular analyses. Morphological measurements alone do not offer a clear differentiation between members this genus. This study aims to document presence Brazilian ecoregion, focusing its morphological, morphometric genetic characteristics. By undertaking comprehensive examination, we seek...

Abstract Since morphological traits may overlap among species within a complex, the integration of and mitochondrial data could provide crucial insights for distinguishing species, as observed in fruit-eating bats genus Artibeus. Therefore, application geometric morphometric (GM) techniques yield more refined robust analyses inter- intraspecific variations. In this study, we generated two datasets: one with molecular delimitation based on barcode region (COI) other cranial size shape using...

DNA barcoding is a useful complementary tool for use in traditional taxonomic studies due to its ability detect cryptic species, and may be particularly efficient the identification of fish species. The fauna Itapecuru River represents an important fishery resource Brazilian State Maranhão, although it currently suffering increasing degradation as result anthropogenic impacts. Therefore, was used present study identify species establish database rich freshwater Maranhão. A total 440...

The present study reviews the phylogeny of genus Marmosops and expands geographic range pinheiroi to Brazilian State Maranhão.Five specimens M. were collected from Inhamum Municipal Environmental Protection Area in Caxias, Maranhão.Total DNA was extracted mitochondrial cytochrome b gene sequenced an ABI PRISM 3500.Additional sequences

Eighteen enzymatic loci were analysed in Aedes aegypti populations from four neighbourhoods the city of Manaus. The analyses showed that Downtown population was most polymorphic (p = 55.6%) with higher observed and expected mean heterozygosities (Ho 0.152 ± 0.052; He 0.174 0.052, respectively). least variability detected Coroado Cidade Nova populations, both polymorphism 44.4%. latter presented heterozygosity 0.109 0.037). Wright's F statistics value Fis than Fst (Fis 0.164 > 0.048),...

Abstract The red piranha, Pygocentrus nattereri, is an important resource for artisanal and commercial fisheries. present study determines the genetic differentiation among P. nattereri populations from northeastern Brazilian state of Maranhão. DNA was isolated using a standard phenol-chloroform protocol Control Region amplified by PCR. PCR products were sequenced didesoxyterminal method. A sequence 1039 bps obtained 60 specimens, which presented 33 polymorphic sites, 41 haplotypes, һ =0.978...

Aedes aegypti is a mosquito native to the African continent, which now widespread in tropical and subtropical regions of world. In many regions, it represents major challenge public health, given its role cycle transmission important arboviruses, such as Dengue, Zika, Chikungunya. Considering epidemiological importance Ae. aegypti, present study sequenced partial mitochondrial genome sample collected municipality Balsas, Brazilian state Maranhão, followed by High Throughput Sequencing...

The mullets of the family Mugilidae, and in particular species genus Mugil, are characterized by highly conserved morphological features, which hinder taxonomic classification considerably. Given this, present study aimed to evaluate efficiency 5S rDNA gene – a rapid low cost genotyping marker for discrimination Mugil species. Variations banding pattern permitted reliable differentiation four –Mugil curema, incilis, sp. hospes– although those three others (Mugil liza, platanus cephalus) were...

The Trichocentrum cepula complex comprises three species, T. caatingaense, and sprucei, endemic to tropical forests east of the Andes in South America. delimitation these species has been diversely interpreted due extensive morphological variation complex. We applied an integrative approach achieve a better understanding biological units, using geometric morphometrics, cytogenetic analysis (chromosome counts CMA/DAPI banding) molecular phylogenetics (ITS rpl32-trnL). An initial morphometric...

Niceforo’s big-eared bat, Trinycterisnicefori (Sanborn, 1949), is a monotypic species which has been recorded in number of Brazilian states, but disjunct distribution this country. This study presents the first record T.nicefori state Maranhão. The specimens were collected municipalities Godofredo Viana and Cândido Mendes, fragments Amazon forest. One male (forearm: 38.00 mm, weight: 6 g) one female (39.68 8 collected. presented chestnut-colored fur, chin with pair dermal pads arranged...