26 documents found, page 1 of 3
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...
Impaired fish swimming performance following dietary exposure to the marine phy...
Corriere, Mauro; Baptista, Miguel; Paula, Jose R.; Repolho, Tiago; Rosa, Rui; Reis Costa, Pedro; Soliño, LuciaFish are frequently exposed to harmful algal blooms (HAB) and to related toxins. However, the biological effects of okadaic acid (OA), the most abundant and frequent HAB-toxin in Europe, South America and Asia, have been poorly investigated. In this study, fish swimming performance and metabolic rates were investigated in juveniles of Zebra seabream (Diplodus cervinus) exposed to OA-group toxins via dietary rou...
Distinct Bleaching Resilience of Photosynthetic Plastid-Bearing Mollusks Under ...
Dionísio, Gisela; Faleiro, Filipa; Bispo, Regina; Lopes, Ana Rita; Cruz, Sónia; Paula, José Ricardo; Repolho, Tiago; Calado, Ricardo; Rosa, RuiThe impact of temperature on photo-symbiotic relationships has been highly studied in the tropical reef-forming corals but overlooked in less charismatic groups such as solar-powered sacoglossan sea slugs. These organisms display one of the most puzzling symbiotic features observed in the animal kingdom, i.e., their mollusk-plastid association, which enables them to retain photosynthetic active chloroplasts (i....
Negative synergistic impacts of ocean warming and acidification on the survival...
Araújo, José E.; Madeira, Diana; Vitorino, Rui; Repolho, Tiago; Rosa, Rui; Diniz, M.Global change is impacting aquatic ecosystems, with high risks for food production. However, the molecular underpinnings of organismal tolerance to both ocean warming and acidification are largely unknown. Here we tested the effect of warming and acidification in a 42-day experiment on a commercial temperate fish, the gilt-head seabream Sparus aurata. Juvenile fish were exposed to control (C 18 °C pH 8), ocean ...
Ocean acidification dampens physiological stress response to warming and contam...
Sampaio, Eduardo; Lopes, Ana Rita; Francisco, Sofia; Paula, José Ricardo; Pimentel, Marta; Luísa Maulvault, Ana; Repolho, Tiago; F. Grilo, TiagoIncreases in carbon dioxide (CO2) and other greenhouse gases emissions are changing ocean temperature and carbonate chemistry (warming and acidification, respectively). Moreover, the simultaneous occurrence of highly toxic and persistent contaminants, such as methylmercury, will play a key role in further shaping the ecophysiology of marine organisms. Despite recent studies reporting mostly additive interaction...
Physiological resilience of a temperate soft coral to ocean warming and acidifi...
Lopes, Ana Rita; Faleiro, Filipa; Rosa, Inês C.; Pimentel, Marta; Trubenbach, Katja; Repolho, Tiago; Diniz, Mário S.; Rosa, RuiAtmospheric concentration of carbon dioxide (CO2) is increasing at an unprecedented rate and subsequently leading to ocean acidification. Concomitantly, ocean warming is intensifying, leading to serious and predictable biological impairments over marine biota. Reef-building corals have proven to be very vulnerable to climate change, but little is known about the resilience of non-reef-building species. In this ...
Different ecophysiological responses of freshwater fish to warming and acidific...
Jesus, Tiago F.; Rosa, Inês C.; Repolho, Tiago; Lopes, Ana Rita; Pimentel, Marta; Almeida-Val, Vera M.F.; Coelho, Maria M.; Rosa, RuiFuture climate change scenarios predict threatening outcomes to biodiversity. Available empirical data concerning biological response of freshwater fish to climate change remains scarce. In this study, we investigated the physiological and biochemical responses of two Iberian freshwater fish species (Squalius carolitertii and the endangered S. torgalensis), inhabiting different climatic conditions, to projected...
Protein analysis and gene expression indicate differential vulnerability of Ibe...
Jesus, Tiago F.; Moreno, João M.; Repolho, Tiago; Athanasiadis, Alekos; Rosa, Rui; Almeida-Val, Vera M. F.; Coelho, Maria M.Current knowledge on the biological responses of freshwater fish under projected scenarios of climate change remains limited. Here, we examine differences in the protein configuration of two endemic Iberian freshwater fish species, Squalius carolitertii and the critically endangered S. torgalensis that inhabit in the Atlantic-type northern and in the Mediterranean-type southwestern regions, respectively. We per...
Ecophysiological responses of juvenile seabass (Dicentrarchus labrax) exposed t...
Luísa Maulvault, Ana; Barbosa, Vera; Alves, Ricardo; Custódio, Ana; Anacleto, Patrícia; Repolho, Tiago; Pousão Ferreira, Pedro; Rosa, RuiThe ecotoxicological effects of methylmercury (MeHg) exposure have been intensively described in literature. Yet, it is still unclear how marine biota will respond to the presence of MeHg under climate change, namely ocean warming. The present study aimed to investigate, for the first time, fish condition [Fulton's K index (K), hepatosomatic index (HIS) and brain-to-body mass ratio (BB-ratio)] and several stres...
Protein analysis and gene expression indicate differential vulnerability of Ibe...
Jesus, Tiago F.; Moreno, João M.; Repolho, Tiago; Athanasiadis, Alekos; Rosa, Rui; Almeida-Val, Vera M. F.; Coelho, Maria M.Current knowledge on the biological responses of freshwater fish under projected scenarios of climate change remains limited. Here, we examine differences in the protein configuration of two endemic Iberian freshwater fish species, Squalius carolitertii and the critically endangered S. torgalensis that inhabit in the Atlantic-type northern and in the Mediterranean-type southwestern regions, respectively. We per...