World Food Day, 16 October

Every day, people are exposed to complex mixtures of chemicals mainly through food. In order to assess human exposure to food contaminants, it is crutial to carry out their biomonitoring, that is, to detect their presence directly in biological samples such as blood, hair, urine or breast milk, or to predict their effects on the human body at an early stage, in order to reduce exposure to chemicals and contribute to improve public health. Coordinated by the German Federal Environment Agency, the HBM4EU (European Human Biomonitoring Initiative) is a European consortium with the participation of 30 countries, the European Environment Agency and the European Commission, financed under the European...

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  • International Day for Disaster Reduction

    The International Day for Disaster Reduction was started in 1989 to promote a global culture of risk-awareness and disaster reduction. We recall the special broadcast of TSF, on September 24, on the impact of climate change, with the participation of CESAM researchers João Miguel DiasDavid Carvalho and Myriam Lopes and the researchers José Carlos Mota (DCSPT / GOVCOPP) and Sara Moreno Pires (DCSPT / GOVCOPP). Listen here. And also the interview with João Miguel Dias, on TVI News, about the rising waters in the city of Aveiro. Listen and watch here

  • Study: Noteworthy bird records from Príncipe Island (São Tomé and Príncipe, Gulf of Guinea)

    In this article, the authors provide a list of ornithological records obtained from 2015 to 2017 on Príncipe Island, comprising 16 passerine and aquatic bird species new or rare to the island. These include five first records for the oceanic islands of the Gulf of Guinea (Senegal Lapwing Vanellus lugubris, Great Snipe Gallinago media, Grey Pratincole Glareola cinerea, Magnificent Frigatebird Fregata magnificens and Northern Wheatear Oenanthe oenanthe) plus one of a genus requiring confirmation of the species (Isabelline Warbler Iduna cf. opaca), and the first fully supported record of Willow Warbler Phylloscopus trochilus. A further three species are new for Príncipe Island (African Pygmygoose Nettapus auritus, Grey Plover Pluvialis squatarola and Ringed Plover Charadrius hiaticula). This work was published by Edna Correia (CESAM, University of Lisbon), Berta Correia and Ricardo Lima (CE3C, University of Lisbon) in Malimbus http://www.malimbus.org/en/contents/tocm43.html#422 Additionally, the authors published a note in the following issue of the same journal entitled: An addition and correction to “Noteworthy bird records from Príncipe Island (São Tomé and Príncipe, Gulf of Guinea)” adding one species to the previous list, the American Golden Plover Pluvialis dominica, as the first confirmed record of this species to the oceanic islands of the Gulf of Guinea. Photo:Great Snipe Gallinago media observed in Santo António city (Príncipe Island, São Tomé and Príncipe). This was the first record of this long distance migratory species for the oceanic islands of the Gulf of Guinea. Credit: Berta Correia

  • World Migratory Bird Day, Oct 9th - Studies of migratory birds made by CESAM in the official selection of CineEco 2021

    The documentary "Migradores de longa distância: entre o Tejo e o Ártico", which portrays the work of a team of researchers from the CESAM and the DBIO/UA, led by José Alves, is part of the official selection of the 2021 edition of CineEco - Serra da Estrela International Environmental Film Festival, to be held in Seia from October 9 to 16. “Migradores de longa distância: entre o Tejo e o Ártico” will be shown on October 14th. Read more here.

  • New CESAM study on photosynthetic sea slugs highlighted in Nature

    It is a common perception that chloroplasts and photosynthesis are unique to plants and algae. However, some sea slugs are able to incorporate functional chloroplasts from their food algae. By being able to deal with the risks of incorporating chloroplasts, sites of production of reactive oxygen species (https://www.ua.pt/pt/noticias/0/59547), they benefit from the organic compounds resulting from photosynthesis to overcome periods of food shortage (https://www.ua.pt/en/noticias/0/51709). A study published this week in the journal Proceedings of the Royal Society B: Biological Sciences, led by researchers from the Center for Environmental and Marine Studies (CESAM) and the Department of Biology (DBio) of UA, shows that these sea slugs also use compounds resulting from photosynthesis to boost their reproductive investment (https://doi.org/10.1098/rspb.2021.1779). Using labelled inorganic carbon and nitrogen, the authors track products of photosynthesis in the reproductive organs of slugs and in polyunsaturated fatty acids with reproductive functions. The study also shows that the fecundity is lower when photosynthesis is inhibited. This work confirms the relevance of this unique association between an animal and a plant organelle for the evolutionary success of these sea slugs and was highlighted in Nature (https://www.nature.com/articles/d41586-021-02631-2). The work was developed under the KleptoSlug project: Kleptoplasty – The sea slug that got away with stolen chloroplasts, led by researcher Sónia Cruz and funded by the European Research Council (https://www.ua.pt/pt/noticias/16/64194). Photo: Sea slug of the species Elysia timida. The green color is due to the presence of chloroplasts stolen from the alga Acetabularia acetabulum. Credits: Paulo Cartaxana.

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