Pre-engorde de pulpo común Octopus vulgaris con 3 dietas basadas en descartes de acuicultura en la comunidad Canaria

On-growing of Octopus vulgaris fed different feeds has shown promising results. Nevertheless, since the minimum legal size for octopus fisheries in spain i sin most of experimental ongrowing of this species an average weight over 750-1000kg was utilized with g (and little research has been conducted in order to evaluate the effect of these diets on smaller individuals. The present work evaluates the effect of 3 diets based on bogue, obtained as ?discarded? species from local fish farms, on ingestion and growth of O. vulgaris weighing 400 g. The 1st diet was composed by discarded bogue, the 2nd diet by a 40-60% discarded bogue-crab Portunus pelagicus and the 3rd diet was presented as a moist diet based on discarded bogue. A triplicate of four octopuses per treatments, male:female 1:1, were kept in circular 400 l tanks and fed each diet for 4 weeks. Absolute growth rate (AGR, g./day), standard feeding rate (SFR, %/day) and feed efficiency (FE) were calculated. The addition of crab to the diet increased SFR which underlines different feeding habits when compared with 0.8-1 kg octopuses. Lower growth and higher FE was recorded with the moist diet, probably due to high disintegration of this kind of feed.

Oceanográfica: más de una década generando libros para la divulgación de las ciencias del mar

[ES]Con motivo de la celebración del Día Internacional del Libro 2014 la empresa canaria de divulgación de obras de divulgación científica sobre las ciencias del mar, Oceanográfica, nos cuenta cómo lo han hecho y porqué se han auditado conforme a los principios de la Economñia del Bien Común. Una de las razones del éxito obtenido parece residir en el maridaje del trabajo editorial con contenidos de calidad proporcionado por los científicos con vocación de divulgar dicho conocimiento