The African citrus psyllid, Trioza erytreae, is one of the two vectors of Huanglongbing, the most serious citrus disease worldwide. The first detection of T. erytreae in the European mainland was on the northwest of the Iberian Peninsula in 2014. Since then, the pest has spread throughout northern Spain (Galicia, Asturias, Cantabria, País Vasco) and along the western Atlantic coast of Portugal (from the Douro e Minho region to the Algarve). We conducted a series of laboratory experiments on lemon plants at different temperatures (from 8 to 34 °C) and humidity conditions (from 40 to 90%) to find out the influence of extreme temperatures and relative humidities (RHs) on the mortality, development and reproduction of T. erytreae. Our results show that temperatures above 30 °C and below 10 °C are very detrimental for nymphal development and nymphs were unable to reach the adult stage. Furthermore, eggs were unable to hatch under temperatures above 33 °C and below 8 °C. Adult mortality was highest at 34 °C and killed more than 50% of the population. We also found that relative humidity is crucial for the development and survival of T. erytreae. Nymphs were unable to reach the adult stage at an RH of 90% and 40%. Also, fecundity was significantly reduced at 90 and 40% RH, and fertility was lowest at 40% RH. Nymphal mortality was highest at an RH of 40%, which was the most detrimental humidity among all tested for the survival and development of T. erytreae. Our work concludes that T. erytreae establishment and spread will be maximum in regions with a temperate and humid climate, being rare in regions where dry and hot weather conditions predominate.

Drosophila suzukii is a pest affecting a wide range of host plants, causing severe damage to small fruits, berries, and grapes. This study analyzed environmental factors influencing its population dynamics in regions where temperature is not a limiting factor. Data were collected in the spring–summer seasons of 2018 and 2019 across three vineyards in northwestern Portugal, examining the relationship between captured D. suzukii females, climatic variables, vine phenological stages, and ecological infrastructures. A stepwise linear model and Pearson correlation matrix were used. In 2020, a winter study was conducted in nine vineyards, focusing on landscape composition and its effect on D. suzukii populations. An ecological infrastructure index was created and correlated with captures data. Results show that vine phenological stages and nearby ecological infrastructures significantly affect population dynamics in spring and summer. Vineyards surrounded by complex landscapes, especially with wild hosts, supported higher D. suzukii populations during winter. These findings highlight the importance of ecological infrastructures in managing D. suzukii populations year-round and suggest their consideration in pest control strategies.

O trigo sarraceno (Fagopyrum esculentum) tem ganhado destaque devido às suas diversas aplicações principalmente nas áreas econômica, farmacológica e agronômica. Este estudo teve como objetivo revisar e sintetizar a literatura existente sobre o trigo sarraceno (Fagopyrum esculentum), explorando sua origem, potencial uso nutricional, benefícios para a saúde, impacto ambiental e práticas agrícolas. A metodologia empregada baseia-se na pesquisa descritiva, utilizando critérios de análise: periódicos científicos, artigos e livros publicados sobre o assunto. Após uma revisão abrangente da literatura observou-se que os resultados discutem a utilização do trigo sarraceno na alimentação humana e animal, sua importância na indústria farmacêutica e de alimentos, além do papel crucial na agricultura sustentável e no controle biológico de pragas. A partir das potencialidades elucidadas por este estudo, evidencia-se a necessidade contínua de pesquisas científicas e programas de melhoramento genético para o desenvolvimento de novas cultivares com alto rendimento e características desejáveis. Visto que, mesmo com os avanços nos programas de melhoramento genético, há uma demanda significativa por pesquisas que elucidem os mecanismos de adaptação, as interações planta-patógeno e, principalmente, o desenvolvimento de cultivares adaptadas com alto rendimento de grãos. Contribuindo significativamente para a compreensão das aplicações e benefícios do trigo sarraceno, propondo novas direções para futuras pesquisas.