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Stable isotopes as tracers of trophic interactions in marine mutualistic symbioses
Ferrier‐Pagès, Christine; Leal, Miguel CostaMutualistic nutritional symbioses are widespread in marine ecosystems. They involve the association of a host organism (algae, protists, or marine invertebrates) with symbiotic microorganisms, such as bacteria, cyanobacteria, or dinoflagellates. Nutritional interactions between the partners are difficult to identify in symbioses because they only occur in intact associations. Stable isotope analysis (SIA) has p...
How to Succeed in Marketing Marine Natural Products for Nutraceutical, Pharmace...
Calado, Ricardo; Leal, Miguel Costa; Gaspar, Helena; Santos, Susana; Marques, António; Nunes, Maria Leonor; Vieira, HelenaThe marine ecosystem shelters a vast number of macro- and microorganisms that have developed unique metabolic skills to survive in diverse and hostile habitats. These survival strategies often result in the biosynthesis of an array of secondary metabolites with specific activities and functions in the cellular context. Several metabolites can give origin to high-value commercial products for nutraceutical, phar...
3D chemoecology and chemotaxonomy of corals using fatty acid biomarkers: Latitu...
Figueiredo, Cátia; Baptista, Miguel; Rosa, Inês; Lopes, Ana Rita; Dionísio, Gisela; Rocha, Rui J.M.; Cruz, Igor C.S.; Kikuchi, Ruy K.P.; Simões, NunoWith the objective of uncovering differences in the fatty acid (FA) composition of hexa- and octocorals from different climatic zones (equatorial, subtropical and tropical) and distinct habitats (e.g. rock and coral reefs; intertidal to deep-sea environments), the FA composition of 36 hexa- and octocoral species (132 specimens) was analysed (including the first characterization of organisms from the order Zoant...
Concurrent imaging of chlorophyll fluorescence, Chlorophyll a content and green...
Leal, Miguel Costa; Jesus, Bruno; Ezequiel, João; Calado, Ricardo; Miranda Rocha, Rui Jorge; Cartaxana, Paulo; Serôdio, JoãoResearch on photosynthetic cnidarians has been mainly focused on the symbiosis established between the cnidarian host and its dinoflagellates endosymbionts from genus Symbiodinium. Despite the potential of imaging techniques for assessing the spatial distribution of key parameters of cnidarian photobiology, such as photochemical activity, chlorophyll a content or green fluorescent proteins (GFPs), to our best k...
Trace element fingerprinting of cockle (Cerastoderma edule) shells can reveal h...
Ricardo, Fernando; Génio, Luciana; Leal, Miguel Costa; Albuquerque, Rui; Queiroga, Henrique; Rosa, Rui; Calado, RicardoDetermining seafood geographic origin is critical for controlling its quality and safeguarding the interest of consumers. Here, we use trace element fingerprinting (TEF) of bivalve shells to discriminate the geographic origin of specimens. Barium (Ba), manganese (Mn), magnesium (Mg), strontium (Sr) and lead (Pb) were quantified in cockle shells (Cerastoderma edule) captured with two fishing methods (by hand and...
Potential use of fatty acid profiles of the adductor muscle of cockles (Cerasto...
Ricardo, Fernando; Pimentel, Tânia; Moreira, Ana S. P.; Rey, Felisa; Coimbra, Manuel A.; Domingues, M. Rosário; Domingues, Pedro; Leal, Miguel CostaGeographic traceability of seafood is key for controlling its quality and safeguarding consumers’ interest. The present study assessed if the fatty acid (FA) profile of the adductor muscle (AM) of fresh cockles (Cerastoderma edule) can be used to discriminate the origin of specimens collected in different bivalve capture/production areas legally defined within a coastal lagoon. Results suggest that this biochem...
Seafood traceability: current needs, available tools, and biotechnological chal...
Leal, Miguel Costa; Pimentel, Tânia; Ricardo, Fernando; Rosa, Rui; Calado, RicardoMarket globalization and recurring food safety alerts have resulted in a growing consumer awareness of the need for food traceability. This is particularly relevant for seafood due to its perishable nature and importance as a key protein source for the population of the world. Here, we provide an overview of the current needs for seafood origin traceability, along with the limitations and challenges for its imp...
Seafood traceability: current needs, available tools, and biotechnological chal...
Leal, Miguel Costa; Pimentel, Tânia; Ricardo, Fernando; Rosa, Rui; Calado, RicardoMarket globalization and recurring food safety alerts have resulted in a growing consumer awareness of the need for food traceability. This is particularly relevant for seafood due to its perishable nature and importance as a key protein source for the population of the world. Here, we provide an overview of the current needs for seafood origin traceability, along with the limitations and challenges for its imp...
Early-life exposure to climate change impairs tropical shark survival
Rosa, Rui; Baptista, Miguel; Lopes, Vanessa M.; Pegado, Maria Rita; Ricardo Paula, José; Trubenbach, Katja; Leal, Miguel Costa; Calado, RicardoSharks are one of the most threatened groups of marine animals worldwide, mostly owing to overfishing and habitat degradation/loss. Although these cartilaginous fish have evolved to fill many ecological niches across a wide range of habitats, they have limited capability to rapidly adapt to human-induced changes in their environments. Contrary to global warming, ocean acidification was not considered as a direc...
Marine microorganism-invertebrate assemblages: perspectives to solve the "suppl...
Leal, Miguel Costa; Sheridan, Christopher; Osinga, Ronald; Dioníasio, Gisela; Rocha, Rui Jorge Miranda; Silva, Bruna; Rosa, Rui; Calado, RicardoThe chemical diversity associated with marine natural products (MNP) is unanimously acknowledged as the "blue gold" in the urgent quest for new drugs. Consequently, a significant increase in the discovery of MNP published in the literature has been observed in the past decades, particularly from marine invertebrates. However, it remains unclear whether target metabolites originate from the marine invertebrates ...