4 documents found, page 1 of 1
Ecophysiological effects of mercury bioaccumulation and biochemical stress in t...
Rodrigues, Andreia C. M.; Gravato, Carlos; Galvão, Daniela; Silva, Virgília S.; Soares, Amadeu M. V. M.; Gonçalves, Jorge M. S.; Ellis, Jim R.Mercury (Hg) is a non-essential metal that can have toxic effects on the fitness of organisms and tends to bioaccumulate with age and to biomagnify in higher trophic levels. Few studies have assessed oxidative stress and neurotoxicity in deep-water sharks. This study evaluated early ontogenetic changes and physiological effects (antioxidant defences, oxidative damage, aerobic metabolism and neurotransmission fu...
Ecophysiological effects of mercury bioaccumulation and biochemical stress in t...
Rodrigues, Andreia C.M.; Gravato, Carlos; Galvão, Daniela; Silva, Virgília S.; Soares, Amadeu M.V.M.; Gonçalves, Jorge Manuel Santos; Ellis, Jim R.Mercury (Hg) is a non-essential metal that can have toxic effects on the fitness of organisms and tends to bioaccumulate with age and to biomagnify in higher trophic levels. Few studies have assessed oxidative stress and neurotoxicity in deep-water sharks. This study evaluated early ontogenetic changes and physiological effects (antioxidant defences, oxidative damage, aerobic metabolism and neurotransmission fu...
Diving into the vertical dimension of elasmobranch movement ecology
Andrzejaczek, Samantha; Lucas, Tim C. D.; Goodman, Maurice C.; Hussey, Nigel E.; Armstrong, Amelia J.; Carlisle, Aaron; Coffey, Daniel M.Knowledge of the three-dimensional movement patterns of elasmobranchs is vital to understand their ecological roles and exposure to anthropogenic pressures. To date, comparative studies among species at global scales have mostly focused on horizontal movements. Our study addresses the knowledge gap of vertical movements by compiling the first global synthesis of vertical habitat use by elasmobranchs from data o...
Technical mitigation measures for sharks and rays in fisheries for tuna and tun...
Poisson, François; Crespo, Francisco Abascal; Ellis, Jim R.; Chavance, Pierre; Bach, Pascal; Santos, Miguel. N.; Séret, Bernard; Korta, MariaTuna fisheries have been identified as one of the major threats to populations of other marine vertebrates, including sea turtles, sharks, seabirds and marine mammals. The development of technical mitigation measures (MM) in fisheries is part of the code of conduct for responsible fisheries. An in-depth analysis of the available literature regarding bycatch mitigation in tuna fisheries with special reference to...