A 30-day study was carried out to determine the influence of different weaning strategies (WS) on growth and survival rates, stress resistance, digestive enzyme activities whole body fatty acid profiles in yellowfin seabream (Acanthopagrus latus) larvae. Thus, eight WS were designed by combining live foods (LF) (rotifers Artemia) a microdiet (MD) (Gemma Micro™, Skretting). In control group (100...

Dynamics between hypertrophy (increase in cell size) and hyperplasia (increase in cell numbers) of white and red muscle in relation to body size [standard length (SL)], and the influence of the first-feeding diets on muscle growth were investigated in Atlantic cod larvae (Gadus morhua). Cod larvae were fed copepod nauplii or rotifers of different nutritional qualities from 4 to 29 days post hat...

Wild Litopenaeus Õannamei females in different stages of sexual maturation were sampled, Ž . including spent females and their nauplii, for determination of the lipid content, lipid class LC Ž . composition, fatty acid FA composition, vitamin C content and vitamin E content. Free FA Ž . Ž . Ž . Ž . FFA , triacylglycerol TAG , phosphatidylcholine PC and sterol esters SE were the dominant Ž . LC ...

Artemia franciscana embryos can suspend their development and metabolism at the gastrula stage to enter a state of cryptobiosis, forming cysts. Embryonic development and metabolism can be resumed under favorable environmental conditions to give rise to free-swimming larvae or nauplii. The mechanisms that mediate these processes are not completely known. Here, we report our studies of the mechan...

Among the Cyanoprokaryota, the genera Synechocystis and Synechococcus have rarely been studied with respect to potential toxicity. This is particularly true with marine environments where studies about the toxicity of cyanobacteria are restricted to filamentous forms at the warmer temperate and tropical regions and also to filamentous forms at cold seas such as the Baltic Sea. In this study, we...

BACKGROUND A preliminary biometric and ecologic database for the brine shrimp Artemia from Mexico and Chile is presented. The area abounds in small and seasonal ponds and large inland lakes, the latter mainly located in Mexico, although relatively large and isolated lakes are found in complex hydrological settings in pre-high plateau areas of Chile. This paper summarizes research efforts aimed ...

First feeding of many fish larvae depends on live feed. A comparative investigation the effectiveness different types feed is not available to our knowledge. Hence, we conducted a study examine effect and combinations performance (survival rate, total length, body width, mass, malformation rate) pikeperch, Sander lucioperca, larvae. From day 0 (onset exogenous feeding) 10, saltwater rotifer Bra...

The aim of this work was to investigate the effects of daily prey concentration during the first 15 days of active feeding of Hoplias lacerdae larvae, and the juvenile size on the feed training. In the first phase, the larvae received five Artemia nauplii concentrations (P). In the second phase, the juveniles from each treatment were trained to accept formulated diet. Superior growth was relate...