Desarrollo de las técnicas de producción de larvas de bocinegro (Pagrus pagrus) en Canarias

The incorporation of new marine species in aquaculture is esencial to development of this activity. The recent advances on the establishment oftechniques to produce red porgy (Pagrus pagrus), allow to consider it as a strong potencialto aquaculture, being predictable its implement in the Canary Archipel. Neverthe!ess, so far it is not posible to produce it comercially, due to difficulties in assuring a continual supply of larvae and fry. Knowing this, it is crucialto continue studying the production techniques oflarvae and the feeding system during this periodo For this, the aim of tbe work is to optimize production

Musgos como bioindicadores de contaminación metálica: caracterización físico-química en términos de adsorción

[EN] Bioindicators have been used in urban and industrial areas to control the atmospheric pollution because it constitutes one of the most important environmental problems of human health. In this sense, mosses are able to reflect the chemical composition of surrounding atmosphere that together with the easy production techniques becomes mosses as one of the potential bioindicators in Europe. This study is part of the Mossclone project (FP-7) and quantifies the adsorption of heavy metals on 4 typical moss species in order to propose one of them to be used for environmental monitoring in the moss bag technique.

Early life of the abalone Haliotis tuberculata coccínea : development, settlement and growth

Programa de doctorado: Acuicultura

Effect of rearing techniques over, survival growth and skeletal abnormalities development in red porgy (Pagrus Pagrus) larvae

[EN] Red porgy is one of the most interested new species for Spanish and other Mediterranean countries. Although no industrial procedures for fry production has been yet developed. The aim of this work was to develop an industrial scale larval rearing protocols testing the viability of two different rearing techniques (semi-intensive vs intensive) in pilot scale facilities. The second objective was to obtain information about the contribution of rearing system to the apparition of morphological abnormalities such as lordosis, opercular deformities and upper/lower jaws shortening which are considered as quality descriptors in commercial marine fish fry production and seem to be related with larval culture conditions in early larval stages. For that purpose, two different larval rearing systems semi-intensive and intensive were compared using the same live feed enrichments. Biochemical composition of larvae, preys and commercial products was analysed. At 50 days post hatching six hundred fish per treatment was individually studied under stereoscope and abnormalities frequency recorded. At 95 days post hatching fry were soft X ray monitored as well. Survival and abnormalities frequency were similar between treatments although a better growth in terms of total length was obtained in the semi-intensive system.