Nutrition of cephalopods: Fueling the system

Evaluacion del crecimiento del pulpo comun Octopus mimus del norte de Chile alimentado con dietas formuladas

“…El menor aporte de lípidos totales proporcionados a O. mimus mediante las dietas semihúmedas representa una ventaja en relación al alimento natural, dado que la proteína es la fuente primaria y talvez exclusiva de energía en cefalópodos (Lee, 1994;Berger, 2010). Los lípidos como fosfolípidos y colesterol son solamente usados para la síntesis de membranas y hormonas esteroidales (Berger, 2010); pero la pérdida significativa de lípidos en la glándula digestiva de las hembras en el extenso ayuno fisiológico durante el cuidado de los huevos (Zamora & Olivares, 2004) y la disminución de ácidos grasos durante el ayuno experimental de O. vulgaris (García-Garrido et al, 2010), indican que los lípidos son fuente energética para el sostenimiento de los procesos vitales, en ausencia de ingesta de alimentos por tiempo prolongado.…”

“…El éxito de una potencial industria de engorde de subadultos de O. mimus dependerá del desarrollo de dietas preparadas que satisfagan los requerimientos nutricionales de la especie y que eviten la dependencia de presas naturales frescas o congeladas sujetas a los vaivenes comerciales y de productividad pesquera (O'Dor & Wells, 1987;Hanlon et al, 1991;Lee, 1994;Vaz-Pires et al, 2004;Domingues et al, 2005Domingues et al, , 2007.…”

Molluscs and echinoderms aquaculture: biological aspects, current status, technical progress and future perspectives for the most promising species in Italy

“…The knowledge of aminoacid composition of food could be essential for evaluating the adequacy of protein to satisfy energetic requirements. Crabs are also preferred to fish for specific pre-ingestional (size, shape, texture, flavour) and/or post-ingestional stimuli (digestibility, assimilation or energetic benefit) that this food can generate (Lee, 1994). The high variability of natural food tested in trials referred in different papers is responsible for the large differences found in documented growth responses and for non-consistent results (AguadoGiménez and García García, 2002).…”

“…In a recent paper, Estefanell et al (2012) showed how feeding octopused on monodiet based on bogue (Boops boops) discarded from fish farms produced high growth (1.8 to 1.9% day −1 ) and high survival (91 to 97%), and the best biomass increment (178 to 212%) and food conversion rates (2.3 to 2.6) ever recorded for O. vulgaris under industrial rearing conditions. The species can be easily adapted to dead food (Boucaud-Camou and Boucher-Rodoni, 1983) and to commercial dehydrated foods, as pelleted diets (Lee, 1994), that can be appreciated and ingested in relation to the specific texture characteristics. Different digestibility for lipids (46%) and proteins (96%) justifies the nutritional superiority of food poorer in lipids and richer in protein that is the main source of energy in octopus (Lee, 1994;O'Dor et al, 1983).…”

“…The species can be easily adapted to dead food (Boucaud-Camou and Boucher-Rodoni, 1983) and to commercial dehydrated foods, as pelleted diets (Lee, 1994), that can be appreciated and ingested in relation to the specific texture characteristics. Different digestibility for lipids (46%) and proteins (96%) justifies the nutritional superiority of food poorer in lipids and richer in protein that is the main source of energy in octopus (Lee, 1994;O'Dor et al, 1983). The knowledge of aminoacid composition of food could be essential for evaluating the adequacy of protein to satisfy energetic requirements.…”