150 documents found, page 1 of 15
Hot and toxic: accumulation dynamics and ecotoxicological responses of mussel M...
Dias, Marta; Özkan, Busenur; Ramos, João; Marques, António; Rosa, Rui; Reis Costa, Pedro; Maulvault, Ana LuísaClimate change is increasing marine heatwaves (MHWs) frequency and severity worldwide. These extreme events often cause bivalves' mass mortality and facilitate the growth, proliferation and dispersion of toxinproducing microalgae blooms associated with threats to seafood safety. Yet, the interactive effects between MHW and uptake of marine biotoxins by biota are a novel topic still lacking thorough research, fr...
Fisher’s perceptions on shark fisheries in Sao Tome Island (Gulf of Guinea, Wes...
Pissarra, Vasco; Santana, Aristides; Panisi, Martina; Santos, Catarina Pereira; Maia, Hugulay; Vasconcelos, Lia; Nuno, Ana; Porriños, GuillermoSao Tome and Principe (STP) is a small island developing state in the Gulf of Guinea (West Africa) and is considered a global hotspot of marine biodiversity. Still, detailed information on sharks’ diversity, abundance, and respective fisheries is mainly absent. Here, we interviewed fishers from different local communities of the island of Sao Tome to characterize: i) local knowledge on shark fisheries, ii) thos...
Global Patterns of Coastal Cephalopod Diversity Under Climate Change
Boavida-Portugal, Joana; Guilhaumon, Francois; Rosa, Rui; Araújo, Miguel B.Coastal marine ecosystems are currently being exposed to climate change at a much faster rate than many other ecosystems, with coastal species being exposed to multiple stressors. Cephalopod mollusks play a pivotal role in marine trophic webs, and most are “keystone” species due to their influence on ecosystem dynamics. In this study, we characterized the global patterns of coastal cephalopod diversity and pres...
Gymnodinium catenatum paralytic Shellfish toxin production and photobiological ...
Lopes, Vanessa M.; Court, Mélanie; Seco, Martim Costa; Borges, Francisco O.; Vicente, Bernardo; Lage, Sandra; Braga, Ana Catarina; Duarte, BernardoMarine heatwaves (MHWs) have doubled in frequency since the 1980s and are projected to be exacerbated during this century. MHWs have been shown to trigger harmful algal blooms (HABs), with severe consequences to marine life and human populations. Within this context, this study aims to understand, for the first time, how MHWs impact key biological and toxicological parameters of the paralytic shellfish toxin (P...
Corrigendum: The significance of cephalopod beaks as a research tool: An update
Xavier, José C.; Golikov, Alexey V.; Queirós, José P.; Perales-Raya, Catalina; Rosas-Luis, Rigoberto; Abreu, José; Bello, Giambattista; Bustamante, PacoIn the published article, there was an error in the author list, and author Jorge Hernández-Urcera was erroneously excluded. The corrected author list appears below.
Impacts of deoxygenation and hypoxia on shark embryos anti-predator behavior an...
Varela, Jaquelino; Martins Rebocho, Sandra; Court, Melanie; Santos, Catarina Pereira; Paula, José Ricardo; Ferreira, Inês João; Diniz, MárioSimple Summary Despite their importance, sharks are among the most endangered ocean species. In addition to overexploitation and the destruction of their natural habitat, climate change is also known to pose a serious threat to them. Among the physico-chemical changes associated with climate change, oxygen loss has been the least studied in terms of its effect on shark physiology and behavior. In this study, we...
Dams: Impacts and Hazards
Silva, Ana Maria; Araújo, Alexandre; Bezzeghoud, Mourad; Rosa, Rui; Salgado, RuiIn the first year of operation of the biggest artificial lake of Europe, Alqueva, which is still in a refilling period, this meeting aims to evaluate the negative and positive impacts of this kind of impoundment. Invited scientists and experts, who belong to a wide variety of scientific areas, with a broad range of viewpoints about this subject, will give an embraced overview about impacts and hazards of dams a...
The significance of cephalopod beaks as a research tool: an update
Xavier, José C.; Golikov, Alexey V.; Queirós, José P.; Perales-Raya, Catalina; Rosas-Luis, Rigoberto; Abreu, José; Bello, Giambattista; Bustamante, PacoThe use of cephalopod beaks in ecological and population dynamics studies has allowed major advances of our knowledge on the role of cephalopods in marine ecosystems in the last 60 years. Since the 1960’s, with the pioneering research by Malcolm Clarke and colleagues, cephalopod beaks (also named jaws or mandibles) have been described to species level and their measurements have been shown to be related to ceph...
Projecting future climate change-mediated impacts in Three Paralytic Shellfish ...
Borges, Francisco O.; Lopes, Vanessa M.; Amorim, Ana; Santos, Catarina F.; Reis Costa, Pedro; Rosa, RuiSimple Summary Harmful algal blooms present a particular risk for marine ecosystems and human health alike. In this sense, it is important to accurately predict how toxin-producing microalgae could be affected by future climate change. The present study applied species distribution models (SDMs) to project the potential changes in the habitat suitability and distribution of three key paralytic shellfish toxin (...
Does Ocean Sunfish Mola spp. (Tetraodontiformes: Molidae) represent a risk for ...
Baptista, Miguel; Braga, Ana Catarina; Rosa, Rui; Reis Costa, PedroTetrodotoxin (TTX) is a potent neurotoxin naturally occurring in terrestrial and marine organisms such as pufferfish. Due to the risk of TTX poisoning, fish of Tetraodontidae family and other puffer-related species must not be placed in the EU markets. This restriction applies to fish of the family Molidae even though no data on toxins’ occurrence is available. In this study, the presence of TTX and its analogu...