Maria Salhi

• PhD
• Professor at Universidad de la República de Uruguay

Soy lecithin (SL) is a source of phospholipids, which play a crucial role in determining cell membrane structure, fluidity, and functionality. This study investigated the effects of dietary SL on the performance, nutrient digestibility, and body composition of Nile tilapia juveniles (average initial weight 12.2 g) raised at 22 °C. The experimental...

The refuge and high food availability found in estuaries, turn them into nursery areas for many aquatic animals. Knowledge on species diet composition and their seasonal variations, contributes to the understanding of trophic interactions and the role that the species play in the ecosystem. The aim of this study was to characterize the diet of Para...

Catfish (Siluriformes) are important species for aquaculture worldwide, with an annual production in 2018 of ca. 6 million t. This review focuses on reassessing larval development, first feeding, and early rearing practices of the most important farmed catfish species, along with some candidate species for aquaculture diversification: Pangasianodon...

With the move away from use of mouse bioassay (MBA) to test bivalve mollusc shellfish for paralytic shellfish poisoning (PSP) toxins, countries around the world are having to adopt non-animal-based alternatives that fulfil ethical and legal requirements. Various assays have been developed which have been subjected to single-laboratory and multi-lab...

This document is based on the work of several years in the Experimental Station for Marine Research and Aquaculture (EEIMA) of DINARA in Cabo Polonio, developing a national technology for the cultivation of flatfish in Uruguay, based on the Paralichthys orbignyanus sole. The investigations carried out have been part of the National Plan for the Dev...

This article presents a highly detailed territorial assessment for aquaculture production in Uruguay and a methodology to identify the most suitable areas in order to develop the activity. Furthermore, it proposes the basis to generate a dynamic modelling tool of high spatial resolution to support the decision-making process regarding national aqua...

Metals (Cu, Zn, Hg) and metalloid (As) concentrations were measured in Micropogonias furnieri and Mugil platanus caught in three areas along the Montevideo coastal zone during winter 2010, spring 2010 and 2011. Compared to previous studies conducted in the zone, both species showed higher (for Cu), similar (for Zn) or lower (for Hg) concentrations....

For over 30 y, a mouse bioassay has been used to monitor paralytic shellfish poisoning (PSP) toxicity in shellfish harvested along the coast of Uruguay. Although providing a good control mechanism for the safety of shellfish consumers, the assay is known to have several disadvantages. To assess the potential for use of liquid chromatography with fl...

La oferta mundial de productos acuícolas en 2014 sigue aumentando y la acuicultura se mantiene como el principal contribuyente con una producción que se mueve en forma rápida y sostenida rumbo a superar a la pesca de captura. En Uruguay, por diversas razones, ha habido un rezago en el desarrollo de la acuicultura en comparación con otros países de...

Paralichthys orbignyanus and Paralichthys patagonicus are flatfish with different life history traits, having in common the condition of breeding in seawater. Paralichthys patagonicus remain their whole life in open seawater and Paralichthys orbignyanus are sometimes found in brackish water bodies. As marine and estuarine food webs have different f...

ABSTRACT Land planning is a key instrument to promote an economic activity, and the regionalization through land suitability is a powerful scale to progress into land planning process. Integration of Geographic Information Systems (GIS) and MultiCriteria Assessment (MCA) is very useful to generate and systemize the information required to asses lan...

Black catfish (Rhamdia quelen) is a species of interest for aquaculture in Brazil, Argentina and Uruguay. A feeding trial was conducted to evaluate the effect of feeding R. quelen larvae on either only an artificial diet or in combination with Artemia nauplii (AN) on larval performance and fatty acid composition. For 12 days, larvae were fed from f...

Sediment bulk parameters and fatty acid biomarkers were used to investigate the relative contribution of major sources of particulate organic matter during upwelling and non-upwelling conditions, at organic enriched sites on the south-eastern Brazilian coast. The degradation state of the organic material and its implications for benthic food webs w...

We investigated the vertical distribution, abundance, specific and functional structure of polychaete assemblages at four organically enriched sites. The effects of fresh organic matter input from the water column driving by upwelling were evaluated. Temperature and salinity values indicate the intrusion of South Atlantic Central Water (SACW) in sp...

Cultivo del lenguado Paralichthys orbignianus en Uruguay M. Bessonart1,2, M. Salhi1,2 1 Laboratorio de Recursos Naturales, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Iguá 4225, Montevideo, Uruguay. Correo electrónico: martinb@fcien.edu.uy 2 Estación Experimental de Investigaciones Marinas y Acuicultura DINARA – Cabo Polonio...

El objetivo de este trabajo fue la descripción del desarrollo morfológico de la larva de Paralichthys orbignyanus, desde la fecundación hasta completar la metamorfosis de puestas obtenidas en cautividad. Peces ya adaptados al cautiverio fueron inducidos hormonalmente, los gametos se obtuvieron por masaje abdominal y se realizó la fecundación artifi...

The present study was conducted to evaluate the ability of horse fat produced in Uruguay, compared with other lipid sources supplemented in the diet of laying hens, to modify the lipid composition and the n − 6/n − 3 fatty acid ratio of the produced eggs. For this purpose, 60 laying hens (Gallus domesticus) were fed for 30 days with five experiment...

In order to evaluate the protein and energy requirement of black catfish fry, eight experimental diets containing four protein levels (30%, 34%, 38% and 43%) and two lipid levels (8% and 14%) were tested. For 30 days, 0.3 g fish were fed the experimental diets to approximate satiation, twice a day. Growth was significantly affected by both protein...

Dietary supplementation of phospholipids seems to be extremely important to promote growth and survival in fish larvae. Several studies also suggest the importance of n-3 highly unsaturated fatty acids (HUFA) rich phospholipids to further enhance larval performance. In the present study, four different diets were formulated in order to compare the...

Red porgy can be considered as a potential candidate to diversify aquaculture production of sparids, due both to the importance of red porgy fisheries and market within Europe, and to its phylogenetic closeness to gilthead seabream. Spontaneously spawned eggs were obtained from a broodstock of wild individuals captured in Canarian waters. Different...

In a previous study feeding larval gilthead seabream on microdiets, an improved growth rate was observed when dietary n−3 HUFA (n−3 highly unsaturated fatty acids) were contained in the polar lipid fraction. A beneficial effect of dietary lecithin on n−3 HUFA incorporation to the larval polar lipids was also observed. To confirm those results and i...

In order to determine the effect of different levels of arachidonic acid (AA) in microdiets on growth and survival of gilthead seabream larvae, two experiments were carried out. In the first experiment, 17-day old larvae were fed microdiets for 14 days. In this trial, we tested four diets with a similar docosahexaenoic acid (DHA)/eicosapentaenoic a...

Two feeding experiments were conducted to evaluate the suitability of two commercial microdiets as a complementary food for the rearing of larval gilthead seabream Sparus aurata. The effect of these diets on growth, survival and total lipid composition, as well as the histological structure of the liver were examined. The results of the first trial...

To investigate the specific component of squid meal which enhances spawning quality, gilthead seabream broodstock were fed four isonitrogenous, isolipidic and isocaloric diets containing fat-soluble or fat-insoluble extracts from fish and squid meals for 2 months during the spawning season. A positive effect of the fat-insoluble fraction of squid m...

A variety of morphological, biological and biochemical parameters of freshly spawned eggs of gilthead seabream (Sparus aurata L.) were studied to determine the optimum n − 3 HUFA level in broodstock diets necessary to obtain a high-quality spawn. The effect of very high dietary n − 3 HUFA levels on fish reproduction was also investigated. Broodstoc...

A variety of morphological, biological and biochemical parameters of freshly spawned eggs of gilthead seabream (Sparus aurata L.) were studied to determine the optimum n − 3 HUFA level in broodstock diets necessary to obtain a high-quality spawn. The effect of very high dietary n − 3 HUFA levels on fish reproduction was also investigated. Broodstoc...

Rotifers were enriched for 24 h with a lipid emulsion and the algae Nannochloropsis sp. Some of the rotifers were treated with antibiotics (chloramphenicol and oxolinic acid). Larval sizes were recorded initially, at day 7 and at the end of the experiment. Larval survival rates were estimated at the end of the experiment. Rotifers and larvae were a...

The results of studies on the essential fatty acid requirement of larval gilthead seabream differ in the recommended n−3 HUFA levels in rotifers (Brachionus plicatilis) necessary to obtain optimal larval growth and survival. Some authors have suggested that the total lipid content of the rotifers may influence the fatty acid requirement of the larv...