Reducing the dependency of fishfeed for marine ingredients and species diversification are both considered crucial factors sustainable development aquaculture. The substitution fish oil (FO) by vegetable oils (VO) in aquafeeds is an economically feasible solution. However, such may compromise flesh content essential n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) and, therefore, its nu...

the parameters used to determine the trophic state of a water body are: total phosphorus (tp),transparency (secchi disk depth) and chlorophyll a. however, these parameters show strong seasonalfluctuations which may hinder the estimation of trophic state. some authors have proposed that sediments be used as an additional tool to evaluate the trophic state of a water body. the aim of this study w...

The application of stable isotope analysis (SIA) has become a standard scientific approach in Agricultural and Ecological researches and, more in general, in several disciplines such as biology, botany, zoology, organic chemistry, climatology, and nutrition. The main objectives of this paper are (1) to provide a simple definition of stable isotopes and (2) to illustrate analytical measurement m...