35 documents found, page 1 of 4
First report of Calceostoma glandulosum (Monogenea) in Argyromus regius: morpho...
Ribeiro, Maria Carolina; Lourenço-Marques, Cátia; Pousão-Ferreira, Pedro; Soares, FlorbelaThe increase in fish production in aquaculture reflects the growth of the world population. However, this expansion is accompa nied by challenges, such as the intensification of production systems through increased stocking density, which induces stress in fish, weakening their immune system and making them more susceptible to disease outbreaks, particularly those caused by parasites. Monogeneans are ectoparasi...
Thermal and nutritional strategies for managing tenacibaculum maritimum in aqua...
Carrilho, Raquel Vaz; Moreira, Márcio Júlio Vicente; Farinha, Ana Paula; Schrama, Denise; Soares, Florbela; Rodrigues, Pedro; Cerqueira, MarcoDisease outbreaks pose a significant challenge in aquaculture, leading to substantial economic losses for producers. Tenacibaculosis, a significant ulcerative bacterial disease caused by Tenacibaculum maritimum, affects a wide range of marine fish species globally. Current disease management relies on antibiotics and chemicals, leading to environmental issues, impaired fish and consumer health, and increased an...
Skin mucus and blood plasma as non-lethal sources of malnutrition protein bioma...
Oliveira, Joana; Raposo de Magalhães, Cláudia; Schrama, Denise; Rodrigues, Pedro M.; Barata, Marisa; Soares, Florbela; Pousão-Ferreira, PedroDeveloping dietary formulations for aquaculture that meet nutritional requirements is essential to production, as nutrition is key for fish growth and health. However, novel dietary formulations may induce malnutrition, which is complex to evaluate and often requires animal sacrifice. Therefore, finding reliable non-lethal biomarkers to diagnose malnutrition in fish is important. This study aimed to obtain vita...
Structural enrichment promotes natural behaviour and welfare of captive gilthea...
Oliveira, Ana Rita; Cabrera-Álvarez, María José; Soares, Florbela; Diáz-Gil, Carlos; Candeias-Mendes, Ana; Saraiva, João; Arechavala-Lopez, PabloThe intensification of aquaculture practices in the last decade can compromise the welfare of farmed fish. However, one strategy to be considered to improve the welfare of captive fish is the implementation of structural enrichment in the rearing environment. The behavioural and physiological effects of suspended ropes inside rearing tanks were experimentally assessed on gilthead seabream (Sparus aurata) breede...
Inactivation in vitro of the marine parasite Amyloodinium ocellatum
Sousa, Rui; Laizé, Vincent; Marques, Cátia Lourenço; Barata, Marisa; Ferreira, Pedro Pousão; Soares, FlorbelaThe ectoparasite Amyloodinium ocellatum is a dinoflagellate that causes severe morbidity and mortality in both brackish and marine warmwater aquaculture fishes worldwide. A. ocellatum has a triphasic life cycle based on a free-living flagellate (the dinospore), a parasitic stage (the trophont) and a resting and reproductive cyst (the tomont). Current chemical treatments have shown some efficacy in eliminating d...
Effect of dietary l-glutamine supplementation on the intestinal physiology and ...
Matias, Ana Catarina; Viegas, Ana Rita; Couto, Ana; Lourenço-Marques, Cátia; Aragão, Cláudia; Castanho, Sara; Gamboa, Margarida; Candeias-Mendes, AnaThe maturation of the intestinal digestive and absorptive functions might limit the amount of absorbed nutrients to fulfil the high requirements of the fast-growing marine fish larva. Glutamine (Gln) has been described to improve intestinal epithelium functions, due to its involvement in energy metabolism and protein synthesis. The purpose of this study was to evaluate dietary 0.2% Gln supplementation on aspect...
Histological evaluation of purple sea urchin (Paracentrotus lividus) gonads: in...
Araújo, João; Gamboa, Margarida; Choulis, Ioannis; Mendes, Ana Candeias; Cabrita, Elsa; Pousão-Ferreira, Pedro; Soares, FlorbelaUnderstanding and controlling reproductive cycles and gonad maturation in cultivated species are crucial in aquaculture. The sea urchin Paracentrotus lividus, known for its edible gonads, requires careful maturation control for both reproduction and commercialization. This study explores the impact of temperature, photoperiod, and diet on gonad development to enhance year-round aquaculture practices. Using two ...
Macroinvertebrates associated with macroalgae within integrated multi-trophic a...
Vieira, Rafael; Mateus, Miguel; Afonso, Carlos; Soares, Florbela; Pousão-Ferreira, Pedro; Gamito, SofiaThe present work aims to evaluate the macroinvertebrate community associated with macroalgae in earthen pond systems to better understand their potential in detritus recycling and as an accessory production. Sampling took place on the settling pond of an aquaculture research station, where macroalgae permanently occurred at high densities. The results suggest differentiation between seasons but not between site...
Eco-innovative aquafeeds biofortified with asparagopsis taxiformis to improve t...
Marmelo, Isa; Lourenço-Marques, Cátia; Silva, Iris A.L.; Soares, Florbela; Pousão-Ferreira, Pedro; Mata, Leonardo; Marques, António; Diniz, Mário SousaExtreme weather events, like marine heatwaves (MHWs), are becoming more frequent and severe due to climate change, posing several challenges to marine ecosystems and their services. As disease outbreaks are often prompted by these acute phenomena, it is essential to develop ecoinnovative strategies that can efficiently improve farmed fish resilience, especially under suboptimal rearing conditions, thereby ensur...
Novel approaches on melatonin role: presence of clock-hormone in fish seminal p...
Félix, Francisca; Gallego, Victor; Mendes, Ana; Soares, Florbela; Vera, Luisa M.; Cabrita, Elsa; Oliveira, CatarinaThe study of melatonin is of great importance for the fundamental knowledge of any living system since it displays many different physiological roles, including being a potent natural antioxidant. To the best of our knowledge, there is no information regarding melatonin in fish seminal plasma. This study aimed to determine this clock-hormone levels in the seminal plasma of three aquaculture fish species: Europe...