Percorrer por autor "Vasconcelos, Raquel"
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- Efeito da alimentação no consumo alimentar e no desenvolvimento larvar de Mythimna unipuncta (Lepidoptera; Noctuidae)Publication . Vieira, Virgílio; Vasconcelos, Raquel; Tavares, João; Oliveira, LuísaMythimna unipuncta (Haworth) causa prejuízos importantes em culturas cerealíferas e sobretudo nas gramíneas das pastagens dos Açores. As larvas foram criadas a 21±1°C 70±5% H.R. e 16 horas de luz, e alimentadas à base de Zea mays, Lolium perenne (Graminae), Trifolium repens (Leguminosae), Beta vulgaris (Chenopodiaceae) e Rumex sp. (Polygonaceae), desde a eclosão até ao fim do desenvolvimento larvar, a fim de se avaliar a aceitabilidade e a conveniência destas plantas para a sua nutrição. As plantas hospedeiras influenciaram quer o número e quer a duração dos estados larvares de M. unipuncta, mostrando que Z. mays e L. perenne têm uma qualidade nutricional superior à das outras plantas testadas. Para as larvas do estado V, alimentadas com milho e azevém, a análise dos índices de utilização do alimento consumido e da eficácia de conversão do alimento digerido e ingerido revelou que o azevém é o mais favorável ao desenvolvimento deste estado larvar.
- Macaronesia as a Fruitful Arena for Ecology, Evolution, and Conservation BiologyPublication . Florencio, Margarita; Patiño, Jairo; Nogué, Sandra; Traveset, Anna; Borges, Paulo A. V.; Schaefer, Hanno; Amorim, Isabel R.; Arnedo, Miquel A.; Ávila, Sérgio P.; Cardoso, Pedro; Nascimento, Lea; Fernández-Palacios, José María; Gabriel, Sofia I.; Gil, Artur José Freire; Gonçalves, Vitor; Haroun, Ricardo J.; Illera, Juan Carlos; López-Darias, Marta; Martínez, Alejandro; Martins, Gustavo M.; Neto, Ana I.; Nogales, Manuel; Oromí, Pedro; Rando, Juan Carlos; Raposeiro, Pedro M.; Rigal, François; Romeiras, Maria M.; Silva, Luís; Valido, Alfredo; Vanderpoorten, Alain; Vasconcelos, Raquel; Santos, Ana M. C.Research in Macaronesia has led to substantial advances in ecology, evolution and conservation biology. We review the scientific developments achieved in this region, and outline promising research avenues enhancing conservation. Some of these discoveries indicate that the Macaronesian flora and fauna are composed of rather young lineages, not Tertiary relicts, predominantly of European origin. Macaronesia also seems to be an important source region for back-colonisation of continental fringe regions on both sides of the Atlantic. This group of archipelagos (Azores, Madeira, Selvagens, Canary Islands, and Cabo Verde) has been crucial to learn about the particularities of macroecological patterns and interaction networks on islands, providing evidence for the development of the General Dynamic Model of oceanic island biogeography and subsequent updates. However, in addition to exceptionally high richness of endemic species, Macaronesia is also home to a growing number of threatened species, along with invasive alien plants and animals. Several innovative conservation and management actions are in place to protect its biodiversity from these and other drivers of global change. The Macaronesian Islands are a well-suited field of study for island ecology and evolution research, mostly due to its special geological layout with 40 islands grouped within five archipelagos differing in geological age, climate and isolation. A large amount of data is now available for several groups of organisms on and around many of these islands. However, continued efforts should be made toward compiling new information on their biodiversity, to pursue various fruitful research avenues and develop appropriate conservation management tools.