For this study, we performed a parasitological analysis of cage-cultured Nile tilapia (Oreochromis niloticus) from the Água Vermelha Reservoir, Southeastern Brazil, and verified relationships with limnological data, seasonality, and fish growth phase. From March 2010 to March 2011, sixty-three specimens of O. niloticus in three growth phases (i.e., initial, intermediate, and final) were collect...

Objectives: The main objective of the study was to collect and rear unmarketable, small sized S.javus which is mostly rejected by traditional fisherman. During fishing activities, under ranging in sizes from 25 40 kg (< 30-40 % total catch/day) being captured. Due very low marketable value these fishes (<250 g) get rejected. Therefore, we utilized this as an economically viable option for...

In aquaculture, monitoring fish size and density is fundamental to improve management profitability of farms. The aim this study test whether horizontally aimed 200-kHz transducers are adequate obtain structure in open-sea cages order apply horizontal hydroacoustics as a non-intrusive innovative technique sea bass (Dicentrarchus labrax) farming. Several sampling strategies have been tested by p...

Dietary vitamin D may compensate for inadequate sun exposure; however, there have been few investigations into the vitamin D content of Australian foods. We measured vitamin D₃ and 25-hydroxyvitamin D₃ (25(OH)D₃) in four species of white fish (barramundi, basa, hoki and king dory), and chicken eggs (cage and free-range), purchased from five Australian cities. Samples included local, imported an...

Parasitic crustaceans of Lernanthropus latis were isolated from the host, the seabass, Lates calcarifer, obtained from a cage culture in Setiu Wetland, Terengganu. The adult females with egg were kept alive in vials containing 20 mL of filtered seawater and incubated at 30°C. The eggs were monitored every hour and the hatching periods were recorded. Three developmental stages were observed, nam...

ammonia (nh3) and nitrite (no2) toxic chemicals which resulted from fish culture, especially in intensive fish culture systems. to evaluate the efficiency of green algae scenedesmus quadricauda in ammonia and nitrite removal from intensive fish farm effluent and also its application as suitable culture medium for s. quadricauda , effluent water samples were collected from rainbow trout farm. si...

Abstract This paper focuses on the effect of porosity nets flow field inside deep-sea aquaculture cage. Based CFD method, 2D fields and surrounding cage from different views are simulated. The effects certain net variable with configurations fishability area, efficiency benefit investigated. results showed that suitable in vertical direction can increase area change be conducive to improving fi...

1.0 INTRODUCTION The increasing of human population has increased the need for food supply. This with the need for quality fish protein has increased the demand for fish and fish products. The global consumption of fish and derived fish products has generally increased during recent decades (Wim et al., 2007). The cage aquaculture sector has grown very rapidly during the past 20 years and is pr...