10 documents found, page 1 of 1
Amyloodiniosis in aquaculture: A review
Moreira, Márcio; Costas, Benjamín; Rodrigues, Pedro; Lourenço‐Marques, Cátia; Sousa, Rui; Schrama, Denise; Raposo de Magalhães, CláudiaFish ectoparasites are one of the pathogens groups that pose great concern to the aquaculture industry. The dinoflagellate Amyloodinium ocellatum is responsible for amyloodiniosis, a parasitological disease with a strong economic impact in temperate and warm water aquaculture, mainly in earthen pond semi-intensive systems. Amyloodiniosis represents one of the most important bottlenecks for aquaculture and, with...
Cytotoxic and hemolytic activities of extracts of the fish parasite dinoflagell...
Moreira, Márcio; Soliño, Lucia; Marques, Cátia L.; Laizé, Vincent; Pousão-Ferreira, Pedro; Fidalgo E Costa, Pedro; Soares, FlorbelaThe dinoflagellate Amyloodinium ocellatum is the etiological agent of a parasitic disease named amyloodiniosis. Mortalities of diseased fish are usually attributed to anoxia, osmoregulatory impairment, or opportunistic bacterial infections. Nevertheless, the phylogenetic proximity of A. ocellatum to a group of toxin-producing dinoflagellates from Pfiesteria, Parvodinium and Paulsenella genera suggests that it m...
Effect of amino acid supplementation and stress on expression of molecular mark...
Herrera, M.; Matias, A. C.; Soares, F.; Ribeiro, L.; Moreira, Márcio; Salamanca, N.; Jerez-Cepa, I.; Mancera, J. M.; Astola, A.The objectives of this work were: 1) develop of molecular stress biomarkers obtaining sequence data of different transcripts, 2) study the molecular stress response through the expression quantification of key gene involved in it, and 3) assess the effects of dietary amino acid additives on stress response in meagre meagres (Argyrososmus regius). Fish batches were fed two experimental diets with tryptophan (Trp...
Fish pathology research and diagnosis in aquaculture of farmed fish; a proteomi...
Moreira, Márcio; Schrama, Denise; Farinha, Ana Paula; Cerqueira, Marco; Raposo de Magalhães, Cláudia; Carrilho, Raquel; Rodrigues, PedroOne of the main constraints in aquaculture production is farmed fish vulnerability to diseases due to husbandry practices or external factors like pollution, climate changes, or even the alterations in the dynamic of product transactions in this industry. It is though important to better understand and characterize the intervenients in the process of a disease outbreak as these lead to huge economical losses in...
A Proteomics and other Omics approach in the context of farmed fish welfare and...
Raposo de Magalhães, Cláudia; Cerqueira, Marco; Schrama, Denise; Moreira, Márcio; Boonanuntanasarn, Surintorn; Rodrigues, PedroThe rapid and intensive growth of aquaculture over the last decade, poses a tremendous challenge to this industry in order to comply with the latest guidelines, established to minimise its negative effects on the environment, animal welfare and public health. Farmed fish welfare has become one of the main priorities towards sustainable aquaculture production with several initiatives launched by the European Uni...
Seagrass meadows improve inflowing water quality in aquaculture ponds
de los Santos, Carmen B.; Olivé, Irene; Moreira, Márcio; Silva, André; Freitas, Cátia; Araújo Luna, Ravi; Quental-Ferreira, Hugo; Martins, MárcioWater quality is critical for fish health in aquaculture production. In flow-through systems, the inflowing water normally requires quality controls and treatments for being supplied from coastal water bodies that can be polluted by nutrients, suspended solids, and microorganisms. Here we assess how seagrass meadows benefit aquaculture systems through the provision of ecosystem services (water filtration, biolo...
Understanding the individual role of fish, oyster, phytoplankton and macroalgae...
Cunha, M. E.; Quental-Ferreira, H.; Parejo, A.; Gamito, Sofia; Ribeiro, L.; Moreira, Márcio; Monteiro, I; Soares, F.; Pousao-Ferreira, P.In order to demonstrate that IMTA can be profitable and a good alternative to regular semi-intensive fish mariculture production in earthen ponds three different production treatments with distinct combinations of trophic levels were designed: (i) a combination of fish, filter feeders, phytoplankton and macroalgae, (ii) fish, filter feeders and phytoplankton and (iii) fish, phytoplankton and macroalgae, to eval...
Report and genetic identification of Amyloodinium ocellatum in a sea bass (Dice...
Marques, Cátia L.; Medeiros, Ana; Moreira, Márcio; Quental-Ferreira, Hugo; Mendes, Ana C.; Pousão-Ferreira, Pedro; Soares, FlorbelaIn this paper we report a case of amyloodiniosis in a sea bass (Dicentrarchus labrax) broodstock in Portugal. Microscopic examination of gill filaments showed the presence of trophonts while histological observation revealed gills epithelial hyperplasia, hypertrophy and lamellar fusion of secondary lamellae. The amplification and sequencing of the small subunit ribosomal RNA gene allowed the identification of t...
Influence of age on stress responses of White Seabream to Amyloodiniosis
Moreira, Márcio; Cordeiro-Silva, Anaísa; Barata, Marisa; Pousão-Ferreira, Pedro; Soares, FlorbelaAmyloodiniosis is a disease that represents a major bottleneck for semi-intensive aquaculture, especially in Southern Europe. The inefficacy of many of the treatments for this disease on marine fish produced in semi-intensive aquaculture has led to a new welfare approach to amyloodiniosis. There is already some knowledge of several welfare issues that lead to amyloodiniosis as well as the stress, physiological,...
AQUACULTURA MULTI-TRÓFICA INTEGRADA EM TANQUES DE TERRA
Maria Emília Cunha; Quental-Ferreira, Hugo; Ribeiro, Laura; Moreira, Márcio; Soares, Florbela; Caetano, Miguel; Ferreira, Pedro PousãoIntegrated multi-trophic aquaculture (IMTA) is the combined cultivation of animals that need food from external origins together with organisms that extract organic and inorganic matter from the rearing environment creating a balanced production system. This paper presents the results obtained during the first year of an integrated multi-trophic production of gilthead sea bream (Sparus aurata) and several sea-b...