O aquarismo é um hobby praticado mundialmente com aumento de popularidade no Brasil nas últimas décadas. A soltura de peixes ornamentais em ambientes naturais é equivocada, sendo considerada introdução de espécies e crime ambiental. Dessa maneira, objetivou-se verificar a existência de registros de solturas disponíveis na web, na mídia social Youtube™ no Brasil. A busca por vídeos com situações de soltura ou descarte foi realizada entre julho e dezembro do ano de 2018, totalizando-se 616 horas de busca. Como resultado, obteve-se 48 registros de solturas, sendo as mais incidentes as regiões do Sudeste, Nordeste e Sul. São Paulo, Minas Gerais, Espírito Santo e Rio de Janeiro foram os Estados com maior número de registros. Registrou-se 33 táxons de peixes (18 gêneros e 15 espécies) e dois híbridos, sendo muitas delas espécies invasoras. A maioria dos praticantes não tem conhecimento sobre a ilegalidade do ato ou a possibilidade de impacto ambiental. O perigo das solturas ornamentais quanto à oportunidade de invasão biológica, a pressão de propágulo empregada e os conceitos equivocados sobre ecologia abordados nos vídeos são discutidos. Sugere-se a conscientização dos aquaristas e maior controle sobre o hobby, sendo as redes e mídias sociais uma nova ferramenta para os órgãos fiscalizadores detectarem distúrbios que possam prejudicar os ambientes naturais.

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Animal-vehicle collisions are the main negative impact of roads on wildlife, where they cause population declines, shifts in community structure, and potential changes in species behavior. Here, we determined mammal roadkill rates and the hotspots with higher rates for medium- and large-bodied mammals on the Highway PR-445 in the state of Paraná, Brazil. We have also evaluated possible differences in the frequency of roadkills concerning species activity patterns and their feeding habits. In doing so, we monitored the PR-445 twice a week between the kilometers 1 and 76, from March 2018 to March 2019, totaling 7296 km after 96 trips. We have recorded 93 mammal roadkills belonging to 17 species, representing a rate of 0.013 individual/km/day. The Carnivora, Didelphimorphia, and Cingulata orders showed to be the most common representatives among the roadkills. Omnivores were more prone to get hit by vehicles than herbivores and carnivores. The type of mammal activity pattern was not determinant in explaining the differences in roadkill rates. Highways in Paraná are among the roads that register the highest number of vehicle collisions with vertebrates in the country. This issue, together with extensive habitat loss and fragmentation, increases the threats to the relictual fauna. Our results indicate that the regions with the highest incidence of mammal roadkills on PR-445 are those close to stretches over rivers and with remnants of native vegetation. Thus, we emphasize that more comprehensive measures (e.g., wildlife passages and speed reducers) are essential to mitigate the impact of roads on wildlife.

Covid-19 led to changes in face-to-face education, replaced by remote teaching, leading teachers to health consequences. The pandemic may have generated new musculoskeletal changes in teachers or intensified pre-existing ones. The objective was to evaluate the time during which professors worked remotely, analyzing the incidence of musculoskeletal alterations. Data collection took place in 2021 using Google forms. There were 92 responses, of those teaching between one and two years (76.1%), with more than 60% staying for more than six hours in front of the computer screen, 96.7% of professors have some type of musculoskeletal pain, and 33.7% claim that the pain started after they started working in front of the computer. The main regions with pain are the cervical area, houlders, and lumbar area. Inadequate posture combined with non-ergonomic furniture affect postural muscles, leading to fatigue and pain. The change in the way of working led to a biopsychosocial imbalance and shall be further investigated.

Aim: To verify variations of early fish stages through density, species composition and ecological attributes in the lower Paranapanema River. Methods: The Canoas I and Canoas II reservoirs were sampled during three reproductive periods (RP´s) between 2012 and 2015. Eggs and larvae were collected using conical-cylindrical plankton nets and juveniles by seines and sieves. After euthanasia and fixation, the samples were identified at the lowest taxonomic level and grouped according to their reproductive strategy and life history. Variations in the eggs, larvae, and juvenile’s densities were tested by Kruskal-Wallis with post-hoc Dunn's test from RP´s, while Student T-test detected differences between reservoirs. Non-metric multidimensional scaling ordination (NMDS) with post-hoc analysis of similarities (ANOSIM) were employed to elucidate differences in species composition. Major results: We sampled 5,513 eggs, 3,137 larvae, and 187 juveniles in Canoas I Reservoir, and 2,709 eggs, 237 larvae, and 13 juveniles in Canoas II Reservoir. Fishes were identified in seven orders, 15 families, and 31 species, with Pimelodus maculatus, Anostomidae, and small-sized characids being the most abundant. There was a predominance of non-migratory reproductive strategy (46%) and periodic life history (60%), most of them opportunistic species. Differences in densities were observed between RP´s and reservoirs. A clustering of three groups were performed to larvae and juveniles, where the divergences were statistically confirmed (p < 0.05). Conclusions: Our findings demonstrated the decrease of early fish stages density overtime and the dominance of opportunistic species, suggesting that these species complete their life cycle in the reservoirs. Thus, P. maculatus can be an important species for the health of ecosystems, in addition to serving as a fishing resource in reservoirs. However, the absence of critical sites for reproduction and the climatic events, along with human responses to this, may have impaired the conclusion of life cycle from many species.