Description of n. sp. (Digenea: Haploporidae) from characid fishes in the Iguazu River Basin based on morphological and molecular evidence.

Here we describe a new species of the genus found parasitizing Garavello & Sampaio, (Garavello and Sampaio) and Casciotta, Almirón & Azpelicueta from the Iguazu National Park, Misiones province, Argentina. n. sp.

How many species of genus Lernaeopoda Blainville, 1822 (Siphonostomatoida: Lernaeopodidae) are there in the southwestern Atlantic?

The family Lernaeopodidae includes 14 genera parasitizing elasmobranchs. Fourteen species of this family have been cited from Argentina, four of which were found on chondrichthyans. Schroederichthys bivius Mller and Henle and Galeorhinus galeus (Linnaeus) from Argentina harbored parasitic copepods of the genus Lernaeopoda.

Stevia as a natural additive on gut health and cecal microbiota in broilers.

Stevia mash (SM), leaves of Stevia rebaudiana Bertoni plant, is an additive used in poultry that enhances growth and health. Objective: to determine the effect of 1 % SM on productive parameters, gut health, and the cecal microbiome in broilers between the first 15 and 21 days old. One hundred sixty male, 1-day-old broilers (48.

Metacercariae in the brain of cf. (Characiformes: Erythrinidae) from Iguazú National Park (Argentina): do they belong to (Digenea, Diplostomidae)?

In Argentina, the family Diplostomidae is composed of eight genera: Szidat & Nani; von Nordmann; Dubois; Lutz; Railliet; Dubois; Dubois; and Diesing. During a parasitological survey of fishes from the Iguazú National Park we detected diplostomid metacercariae in the brain of cf. .

Influence of Tactical and Situational Variables on Offensive Sequences During Elite European Handball Matches.

The main objective of this study was to analyze the influence of tactical and situational variables on offensive sequences during elite European handball matches. A sample of 55 games and 5.857 offensive sequences from the European Handball Federation Champions League, the selected teams were classified as the top eight teams in the league, were analyzed using and logistic regression analyses.

New insights on Pomphorhynchus sphaericus Gil de Pertierra, Spatz et Doma, 1996 (Acanthocephala: Pomphorhynchidae).

The finding of Pomphorhynchus sphaericus in new localities from La Plata River allowed the reevaluation of the species using a taxonomic integrative approach. The newly found specimens in Pimelodus maculatus from Samborombon Bay differ from P. sphaericus by the roots of hooks 1-6 which not form a wide sheet split into 2 apophysis, the slender, separated and equatorial testicles, the position of the cement glands, the shape of the proboscis, the shape and length of lemnisci, and the eggs size.

Ecology of fleas and their hosts in the trifinio of north-east Argentina: first detection of Rickettsia asembonensis in Ctenocephalides felis felis in Argentina.

Fleas are important in public health due to their role as parasites and vectors of pathogens, including Rickettsia. The aim of this study was to evaluate the diversity, abundance and prevalence of fleas and the presence of Rickettsia in the trifinio of north-east Argentina. Fleas from household and synanthropic animals were obtained from urban and periurban areas.

Molecular data reveal hidden diversity of the genus Clinostomum (Digenea, Clinostomidae) in Argentina, with the description of a new species from Ardea cocoi (Ardeidae).

The genus Clinostomum has been recently a subject of a large number of molecular phylogenetic studies that have uncovered a larger species diversity than we thought. In Argentina, only two nominal species have been reported, namely C. detruncatum and C.

Violence in the affective-sexual trajectories of young gay men: "new" settings and "old" challenges.

This paper discusses the phenomenon of violence in the affective-sexual trajectories of young, cisgender gay men, from popular strata, in the metropolitan region of Rio de Janeiro, Brazil. Brazilian literature on violence against gay men generally focuses on the discrimination suffered by this population. However, the violence they are submitted to among family relationships due to their sexual orientation, or even their relationships known as "dating" or "hookup", is hardly discussed.

Comparative Analysis of the Offensive Effectiveness in Winner and Losing Handball Teams.

The purpose of this study was to determine differences related to the offensive process between winning and losing teams among teams participating in the European Handball Federation Champions League (EHFCL) in 55 matches across five seasons. The key indicators used in this study are the offensive actions, team possession type and the zones of the field, goals, and shooting effectiveness. A total of 34 indicators were analyzed and compared using Mann-Whitney U tests.

n. sp. (Digenea: Callodistomidae), a gallbladder parasite of from the lower Iguazú River, described based on combined molecular and morphological evidence.

Adult forms of members of the Callodistomidae always parasitize the gallbladder of freshwater fishes and occur in Africa and America. This study provides a description of a new South American species belonging in Prosthenhystera from the gallbladder of a characid fish (Bryconamericus ikaa), and ribosomal gene sequences (28S rDNA and ITS1-5.8S-ITS2) are used to demonstrate molecular differences between the new species and congeners as well as explore interrelationships among congeners.

Pathology associated with three new metacercariae from Argentina with morphological and DNA barcode identification.

In the Laboratory of Parasites of Fishes, Crustaceans and Mollusks (CEPAVE), we undertook a parasitological study on three species of fish from the Espinal and Esteros del Iberá ecoregions of Argentina. Clinostomid metacercariae were found parasitizing Characidium rachovii, Crenicichla vittata and Gymnogeophagus balzanii. In this study, we analysed the damage that these parasites inflict on their hosts through the evaluation of histological sections.

Itineraries of solitude: clandestine abortion among adolescents in a favela in Rio de Janeiro's South Zone, Brazil.

This article presents the results of a qualitative study based on semi-structured in-depth interviews with ten adolescents, aged between 15 and 17 years, who live in a favela in the South Zone of Rio de Janeiro, Brazil, and who had experienced an illegal abortion between the ages of 12 and 17. We sought to examine more effectively the issue of abortion in adolescence and the strategies employed by adolescents in order to have an abortion within an illegal context. We unveiled the methods that were used, the locations where abortions took place and the manner in which the process of having an abortion happened.

Morphological and molecular identification of hymenolepidid cestodes in children and synanthropic rodents from rural Mexico.

Hymenolepidid cestodes of synanthropic rodents represent a risk for public health. In order to describe the occurrence of hymenolepidids in children and the role of rodents as a potential source of infection, we conducted a morphological and molecular survey on cestodes in two rural villages from Yucatan, Mexico. One hundred and thirty-five stool samples from children (64 from Paraíso and 71 from Xkalakdzonot), 233 Mus musculus (159 from Paraíso and 74 from Xkalakdzonot) and 125 Rattus rattus (7 from Paraíso and 118 from Xkalakdzonot) were analyzed for the presence of cestodes.

Hidden diversity in waterfall environments: The genus Acrorbis (Gastropoda: Planorbidae) from the Upper-Paraná Atlantic Forest.

High-energy freshwater environments such as rapids and waterfalls in the Upper-Paraná Atlantic Forest are home to highly endemic minute freshwater snails of the genus Acrorbis. Only one species, Acrorbis petricola, is currently included within this genus, whose geographical distribution is restricted to three known populations, one in Brazil and the other two in Argentina. Because of habitat specificity and limited geographical distribution, the species is considered vulnerable in Argentina and endangered in Brazil.

Identification of two species of Binema Travassos 1925 (Oxyurida: Travassosinematidae) and Cameronia arecoensis Marchissio and Miralles 1987 (Oxyurida: Thelastomatidae) based on morphological and 18S rRNA partial sequence.

Oxyurid nematodes parasitizing the mole cricket Neoscapteriscus vicinus were isolated in the framework of sampling fields of mole-crickets from the pampean region, in Argentina. In this work, molecular characterization of the 18S rRNA partial sequence of nematodes belonging to the families Thelastomatidae (Cameronia arecoensis Marchissio and Miralles 1987) and Travassosinematidae (Binema korsakowi Sergiev 1923 and Binema klossae, Marchissio and Miralles 1993) were carried out. This is the first world report of sequences belonging to B.

Natural occurrence in Argentina of a new fungal pathogen of cockroaches, Metarhizium argentinense sp. nov.

The aim of this study was to search for entomopathogenic fungi that infect wild cockroaches in forest ecosystems in two protected natural areas of Argentina. Two isolates of Metarhizium argentinense were obtained and identified from wild cockroaches (Blaberidae: Epilamprinae) through the use of morphological characteristics and molecular phylogenetic analyses. This novel species was found in Argentina and is a member of the Metarhizium flavoviride species complex.

Experiment and learning in the affective and sexual life of young women from a favela in Rio de Janeiro, Brazil, with experience of clandestine abortion.

This paper discusses the topic of first sexual intercourse in adolescence focusing on the course of ten young girls with experience of induced abortion living in a favela in Rio de Janeiro. The analysis uses the description of the process of entry into sexuality as a strategy to elucidate the context of pregnancy and the first clandestine abortion in the affective-sexual path of girls interviewed. The first sexual intercourse is a realm of sexuality and social life involving socialization, interpretation of rules and meanings, system of attitudes, ways of approximation, control and modeling of affections, emotions and gender relationships.

Geometric morphometric on a new species of Trichodinidae. A tool to discriminate trichodinid species combined with traditional morphology and molecular analysis.

This study reports a new Trichodinidae, n. sp., parasitizing the pearly fish from Buenos Aires, Argentina.

Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission.

Aedes albopictus (Diptera: Culicidae) is an invasive mosquito, native to Asia, that has expanded its range worldwide. It is considered to be a public health threat as it is a competent vector of viruses of medical importance, including dengue, chikungunya, and Zika. Despite its medical importance there is almost no information on biologically important traits of Ae.

Cholestanol-loaded-cyclodextrin improves the quality of stallion spermatozoa after cryopreservation.

This study was to compare the effect of adding cholesterol or cholestanol loaded cyclodextrins in stallion sperm prior to cryopreservation to optimize sperm cryosurvival. Ejaculates from each of eight stallions were diluted to 120 million cells in a S-MEDIUM diluent. The diluted sperm were sub-divided into three treatments: no additive (control); 0.

Mutation in a D-alanine-D-alanine ligase of Azospirillum brasilense Cd results in an overproduction of exopolysaccharides and a decreased tolerance to saline stress.

Bacteria of the genus Azospirillum are free-living nitrogen-fixing, rhizobacteria that are found in close association with plant roots, where they exert beneficial effects on plant growth and yield in many crops of agronomic importance. Unlike other bacteria, little is known about the genetics and biochemistry of exopolysaccharides in Azospirillum brasilense. In an attempt to characterize genes associated with exopolysaccharides production, we generated an A.

The search for new antimalarial drugs from plants used to treat fever and malaria or plants ramdomly selected: a review.

In this review we discuss the ongoing situation of human malaria in the Brazilian Amazon, where it is endemic causing over 610,000 new acute cases yearly, a number which is on the increase. This is partly a result of drug resistant parasites and new antimalarial drugs are urgently needed. The approaches we have used in the search of new drugs during decades are now reviewed and include ethnopharmocology, plants randomly selected, extracts or isolated substances from plants shown to be active against the blood stage parasites in our previous studies.

Capsaicin prevents the adrenocorticotropin-induced improvement of cardiovascular function and survival in hemorrhage-shocked rats.

A volume-controlled hemorrhagic shock was produced in anesthetized rats by intermittent bleeding from an iliac vein over a period of 20-30 min, until the carotid mean arterial pressure (MAP) stabilized around 20-24 mmHg. In this condition, which caused the death of all saline-treated animals within 25-30 min, the intravenous (i.v.