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- First catalogs of humpback and fin whales in the Algarve regionPublication . Gennari, Ginevra; Castilho, RitaBaleen whales such as humpback (Megaptera novaeangliae) and fin whales (Balaenoptera physalus) are among the most highly migratory marine species. After experiencing severe population declines during the whaling era, both species are now showing signs of recovery. However, their complex movement patterns, wide-ranging distribution, and the absence of clearly defined population boundaries—particularly in the North Atlantic—pose challenges for monitoring and effective conservation efforts. While certain areas are recognized as key migratory corridors, the role of the southern Iberian coast, including the Algarve region in south of Portugal, remains largely unexplored. This thesis presents the first two photo-identification (photo-ID) catalogs of humpback and fin whales in the Algarve, establishing baseline data for this understudied region. The humpback whale chapter documents occurrences collected from 2009 to 2024 in collaboration with whale-watching companies and the Algarve Stranded Network (RAAlg). Fluke photo-ID allowed for the identification of 13 unique individuals. Comparison with the North Atlantic Humpback Whale Catalog identified matches with individuals previously sighted in distant locations, including Cabo Verde, the Ligurian Sea, and Scotland. Entanglement, particularly among juveniles, emerged as a recurrent anthropogenic threat. The fin whale chapter analyzes opportunistic data collected from 2020 to 2024, namely photo-ID and GPS boat tracks, resulting in a catalog of 86 unique individuals. Spatial capture-recapture modeling estimated a local population of 1,476 individuals suggesting that a large part of the population hasn’t been identified yet. Sightings peaked in spring and were often associated with feeding behavior, suggesting that the Algarve may serve as a seasonal foraging ground. However, low re-sighting rates across years suggest a transient rather than a resident use of the area. These findings highlight the ecological relevance of the Algarve for migratory baleen whales and underline the value of photo-ID and collaborative data collection with whale-watching companies. The two catalogs provide essential references for future research and inform conservation strategies in Portuguese waters.
- Understanding host preference of Trioza erytreae (Del Guercio) by a multi-omics approachPublication . Magalhães, Tomás Thormann Abranches de; Marques, Natália Tomás; Duarte, Amílcar Manuel Marreiros; Pereira, José Alberto CardosoThe citriculture industry is significantly challenged by the devastating bacterial disease Huanglongbing (HLB). There is currently no eective cure for HLB, its management is based on inoculum elimination, and on the control of its vectors, namely the psyllids Trioza erytreae and Diaphorina citri. While Europe is currently free of HLB, T. erytreae is present in Spain and Portugal, two of Europe’s main citrus producers. The present study aimed to analyse the mechanisms underpinning T. erytreae's interaction with its citrus hosts. The plant hosts used in this study were the highly suitable lemon (Citrus ×limon) and the less suitable sweet orange (Citrus×sinensis). Both hosts were infested with T. erytreae adults, and three times more nymphs developed on lemon than on sweet orange plants. A multi-omics analysis on the plant’s enriched vascular sap of both citrus hosts revealed heightened primary and secondary metabolisms activity of sweet orange plants in response to infestation, including jasmonic acid (JA)-related defence mechanisms. A proteomic analysis of the nymphs revealed that the diet provided by lemon plants induced growth and energy pathways in T. erytreae. Based on these results, a subsequent experiment was conducted to stimulate the defence responses of lemon plants, analysing its eect on T. erytreae infestation and on the plants’ volatile organic compounds (VOC). Lemon plants were sprayed with JA to activate herbivory-related defences. The JA treatment resulted in a substantial reduction in the number of T. erytreae eggs and nymphs. Furthermore, the VOC profile was found to be aected by infestation and JA treatment, with high emission of (Z)-3-hexenol acetate, 2-hexen-1-ol and carveol. This research provides knowledge that can be used to develop novel methods for T. erytreae control, enhancing the array of responses to the HLB challenge and promoting a sustainable citriculture.
- Avaliação de riscos músculo-esqueléticos em jardineiros da Câmara Municipal de AlbufeiraPublication . Pereira, Filipe de Jesus; Pinheiro, João; Mendes, CelsoO trabalho apresentado foca-se na “Avaliação de Riscos Músculo-Esqueléticos em Jardineiros da Câmara Municipal de Albufeira” vertente da avaliação dos riscos ergonómicos, mas também músculo-esqueléticos que são relacionados ao trabalho (LMERT). O projeto consta na unidade curricular de “Projeto/Dissertação” para a obtenção do grau de mestre em Segurança e Saúde no Trabalho. A importância dos assistentes operacionais reside na sua contribuição direta para a manutenção e funcionamento dos serviços municipais. Estes profissionais asseguram a limpeza das ruas, o funcionamento das infraestruturas e o cuidado com os espaços verdes, fatores essenciais para o bem-estar e segurança da comunidade. Contudo, as funções desempenhadas pelos assistentes operacionais apresentam riscos ocupacionais significativos. A exposição a condições climáticas adversas, o manuseamento de máquinas pesadas e a manipulação de resíduos são alguns exemplos de situações que exigem a implementação rigorosa de medidas de Segurança e Saúde no Trabalho (SST). Estas medidas visam prevenir acidentes, minimizar o impacto de fatores de risco e assegurar as condições de trabalho adequadas para estes profissionais. Este projeto em Segurança e Saúde no Trabalho (SST), visa a aplicação de um Software de seu nome “ERGOsoft” que é uma ferramenta fundamental para analisar de forma rápida e simples os riscos associados, bem como comparar todos esses riscos nos diversos postos de trabalho.