7 documents found, page 1 of 1
Do catadromous thinlip grey mullet beneft from shifting to freshwater? A perspe...
Pereira, Esmeralda; Jorge, André; Quintella, Bernardo; Gomes da Silva, Marco; R. Almeida, Pedro; Lança, Maria JoãoAbstract To investigate the potential benefts of the catadromous thinlip grey mullet Chelon ramada Risso, 1827) migration to freshwater, the total lipid content and fatty acid (FA) profle of female’s muscle and gonads caught in both the estuary and river were analyzed. The freshwater contingent presented a higher body condition, greater muscle gross energy, and larger gonads with higher lipid reserves. These an...
SUB-LETHAL EFFECTS OF EXPOSURE TO ATRAZINE IN GILL CELLS OF SEA LAMPREY DOWNSTR...
Lança, Maria João; Machado, Maria; Filipa, Ferreira; Candeias, Marta; Ferreira, Rui; Alves-Pereira, Isabel; Carrola, João S.; Quintella, BernardoIn Portugal, atrazine (ATZ) was one of the most widely used herbicides in agriculture, and despite prohibited since 2007, it still continued to be detected in the surface and ground waters. Recent research demonstrated that the conditions experienced by anadromous fishes, while in freshwater, may be critical to their subsequent fitness and survival in the sea. Several studies established a decline in wild popul...
Structural lipid changes and NKA activity of gill cells´ basolateral membranes ...
Lança, Maria João; Machado, Maria; Candeias, Marta; Ferreira, Rui; Alves-Pereira, Isabel; Ferreira, Filipa; Quintella, Bernardo; R. Almeida, PedroIn the last decades, several authors have pointed out a reduction in the sea lamprey population abundance in Portuguese rivers. In spite of this, studies concerning downstream migration and the conditions experienced by sea lamprey juveniles during this process are yet to be understood. Considering that changes in lipid composition of the gill cells´ basolateral membrane (BLM) may disrupt the major transporter ...
Salinity and Atrazine Sublethal Levels Induce Gill Cells Basolateral Membrane P...
Lança, Maria João; Machado, Maria; Candeias, Marta; Ferreira, Rui; Alves-Pereira, Isabel; Quintella, Bernardo; S. Mateus, Catarina; R. Almeida, PedroConditions experienced by anadromous fishes while in freshwater may be critical to their subsequent survival in the sea. During the trophic migration to the ocean, juveniles of sea lamprey (Petromyzon marinus L.) are exposed to several stress factors, including different types of pollutants. We analyzed gill histopathological biomarkers, characterized the lipid profile of the basolateral membrane (BLM) of gill ...
Structural lipid changes and Na+/K+-ATPase activity of gill cells'basolateral m...
Lança, Maria João; Machado, Maria; Ferreira, Filipa; Quintella, Bernardo; R. Almeida, PedroSeawater acclimation is a critical period for anadromous species and a process yet to be understood in lampreys. Considering that changes in lipid composition of the gill cells' basolateral membranes may disrupt the major transporter Na+K+-ATPase, the goal of this study was to detect changes at this level during juvenile sea lamprey seawater acclimation. The results showed that saltwater acclimation has a direc...
Structural lipid changes and Na+/K+-ATPase activity of gill cells'basolateral m...
Lança, Maria João; Machado, Maria; Ferreira, Filipa; Quintella, Bernardo; R. Almeida, PedroSeawater acclimation is a critical period for anadromous species and a process yet to be understood in lampreys. Considering that changes in lipid composition of the gill cells' basolateral membranes may disrupt the major transporter Na+K+-ATPase, the goal of this study was to detect changes at this level during juvenile sea lamprey seawater acclimation. The results showed that saltwater acclimation has a direc...
Evaluation of the fatty acid profile of sea lamprey muscles
Martins, Eloi; Lança, Maria João; R. Almeida, Pedro; Gomes da Silva, MarcoNorthern lampreys belong to the family Petromyzontidae and six of the thirty eight species known occur in Portugal. The sea lamprey (Petromyzon marinus, L.), together with the Mixines, constitute the only two groups of vertebrates without jaws (Agnatha) with its origin in the Paleozoic era, 400-500 million years ago [1]. These groups are considered living fossils, since they have no significant morphological ch...