Abstract: Peers are the preferred source of help for Brazilian adolescents who experience dating violence. However, they are not always the best informants for effective responses for dealing with situations of violence in romantic relationships among peers. This experimental study aimed to evaluate the short-term efficacy of three aspects of a peer- and bystander approach-based intervention: the intent to offer help, empathy, and bystander attitudes in response to dating violence in a Brazilian sample of adolescents. The study's participants were 33 adolescents randomized in two groups: experimental group (EG, n = 14) and control group (CG, n =19). The EG underwent three weekly intervention sessions of 90 min each on the healthy versus violent romantic relationships, the quality of friendship in the peer network, and the role of the bystander, while the CG received no intervention. Evaluations were performed 1 week before and two and half months after the intervention. Statistically significant differences between EG and CG at post-test were not found in intention to help, empathy, and bystander attitudes. Future studies should include evaluations of larger samples and mid- and long-term follow-ups to identify patterns of change over the long term as well as examine barriers to utilization of bystander behaviors by adolescents in Brazilian culture.

A goiaba (Psidium guajava) é uma das frutas mais afetadas pelas moscas-das-frutas no Brasil. Na Amazônia brasileira 11 espécies de Anastrepha já foram relatadas nesta cultura. O presente trabalho teve como objetivos identificar as espécies de Anastrepha presentes em um pomar de goiabeira no município de Boa Vista, verificar quais espécies infestam os frutos e identificar os parasitoides presentes. Foram instaladas duas armadilhas tipo McPhail, contendo atrativo alimentar, sendo as coletas realizadas semanalmente, de janeiro a dezembro de 2008. Para determinar a associação entre a planta hospedeira e as espécies de tefritídeos foram realizadas coletas sistemáticas de frutos no mesmo período. Nove espécies de Anastrepha foram identificadas, além dessas foi obtido um exemplar pertencente a uma provável espécie nova. Anastrepha striata Schiner, Anastrepha sororcula Zucchi, Anastrepha obliqua (Macquart) e Anastrepha fraterculus (Wiedemann) foram as espécies dominantes no pomar e representaram 84,8% dos indivíduos capturados. Todas as fêmeas coletadas diretamente dos frutos pertenciam à espécie A. striata. Doryctobracon areolatus (Szépligeti) foi a única espécie de parasitoide obtida. Neste trabalho, Anastrepha ethalea (Walker) é assinalada pela primeira vez no estado de Roraima.

The guava fruit (Psidium guajava) is among the most strongly affected by fruit flies in Brazil. In the Brazilian Amazon, 11 species of Anastrepha have been reported in guava orchards to date. This work aimed to identify the species of Anastrepha present in a guava orchard in the municipality of Boa Vista, determine the species infesting the fruits, and identify any parasitoids present. Two McPhail traps with food bait were installed and weekly collections were made between January and December 2008. Fruits were also collected systematically during this period, with a view to determining the association between host plant and tephritid species. Nine species of Anastrepha were identified, in addition to one specimen belonging to a probable new species. Anastrepha striata Schiner, Anastrepha sororcula Zucchi, Anastrepha obliqua (Macquart), and Anastrepha fraterculus (Wiedemann) were the dominant species in the orchard, accounting for 84.8% of all captured individuals. All females collected directly from fruits were A. striata. Doryctobracon areolatus (Szépligeti) was the only parasitoid species obtained. In this work, Anastrepha ethalea (Walker) is reported for the first time in the state of Roraima.