Nutrient absorption, storage and remobilization in<i>octopus vulgaris</i>

O’Dor, R. K.; Mangold, Katharina; Boucher-Rodoni, Renata; Wells, M. J.; Wells, Jonathan C. K.

doi:10.1080/10236248409387049

Cited by 124 publications

(105 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, there is a correlation between glycogen synthesis and dietary protein level in invertebrates (Pascual et al 2006), which suggests in the case of O. maya fed with crabs that crab protein was adequately digested and absorbed in the digestive gland, promoting synthesis of reserves. The direct use of protein as an energy reserve may occur in the lack of major glycogen and lipid reserves in the digestive gland and muscle (O'Dor et al 1983). For this reason, it is reasonable to assume that the low glycogen concentration registered in the digestive gland of octopuses fed 40% CP diet could be associated with the use of reserves directed to satisfy energy demand that 40% CP feed could not satisfy.…”

Section: Discussionmentioning

confidence: 98%

Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya

et al. 2010

View full text Add to dashboard Cite

Octopus maya is a carnivorous species and protein is the main energy source. During the present study, two different dietary protein levels (40 and 60% CP) were offered to octopuses as specifically designed artificial diets, to determine protein needs and the effects on metabolism. Frozen crab (Callinectes spp.) was used as control. Results obtained demonstrated that crab remains as one of the best diets for O. maya. The artificial diet with 60% CP produced a low but positive growth rate, and at times, a physiological response similar to that observed in octopuses fed crabs. The present results show the capacity of O. maya juveniles to adjust their digestive enzymes to different types of food and protein level, and this appears to be well correlated with octopus growth. General proteases and trypsin from the pancreas were well correlated with growth rates. A low activity was observed in octopuses fed 40% PC diet (negative growth rate), while a high activity was present in octopuses fed 60% CP diet and crabs (low and high growth rate, respectively). In contrast, these same enzymes were inducted in the salivary glands of octopuses fed with the diet that promoted weight loss (40% CP diet), while a reduced activity was observed in octopuses fed crabs. Energy budget indicates that the animals ingested more than 1,000 kJ week -1 kg -1 ; with such energy, octopuses should satisfy their physiological demands such as was observed when animals were fed crab (I = 1,300 kJ week -1 kg -1 ; P = 834 kJ week -1 kg -1 ). However, a very low digested energy was observed in octopuses the fed artificial diets, indicating that these could have a factor that limits digestibility.

show abstract

Section: Discussionmentioning

confidence: 98%

Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Tait (1986) reported that the mantle and the digestive gland of O. vulgaris were the organs that suffered higher variations in biochemical composition after long-term starvation. Early research indicated that several cephalopod species use small amounts of lipids and/or carbohydrates during starvation O'Dor et al 1984;Boucher-Rodoni and Mangold 1988;Segawa and Hanlon 1988;Boucher-Rodoni 1989) and have predominant amino acid metabolism (Ballantyne et al 1981;Lee 1994). Nevertheless, the highest concentrations of lipid in cephalopods are consistently found in the digestive gland (Boucaud-Camou and Yim 1980;Mangold 1983;Moltschaniwskyj and Johnston 2006), which is an organ actively involved in lipid digestion and storage (Rosa et al 2005).…”

Section: Introductionmentioning

confidence: 95%

Lipid composition of the mantle and digestive gland of Octopus vulgaris juveniles (Cuvier, 1797) exposed to prolonged starvation

et al. 2010

View full text Add to dashboard Cite

Lipid composition of the mantle and digestive gland of Octopus vulgaris that were not fed for 27 days were determined. Every 3 days, three octopuses were killed and samples of the mantle and the digestive gland (DG) were taken, in order to determine total lipids as well as lipid classes and fatty acids. Composition in total lipids (TL) for the mantle was similar until day 21, then decreased and remained similar until the end of the experiment. Composition in total lipids for the DG decreased significantly after 3 days, then remained similar until day 21, and then decreased until the end of the experiment. As for the lipid classes, in the DG the main components were triglycerides and sterol esters. Sterol esters suffered strong reductions after 10 days of starvation, while triglycerides remained similar until day 21 and then decreased until the end of the experiment. Cholesterol decreased gradually throughout the experimental period. For polar lipids, phosphatidylcholine and phosphatidylethanolamine increased during the first 3 days and then decreased throughout the experiment. In the mantle, the only neutral classes that decrease were triacylglycerols and sterol esters, while no polar lipid classes decreased in this organ. It was noticeable the decrease in almost all fatty acids in the DG after 3 days of starvation, while in the mantle there were no differences in fatty acid concentrations during the experiment.

show abstract

“…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.…”

Section: Feedingmentioning

confidence: 99%

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

Parisi

Centoducati

Gasco

et al. 2012

Italian Journal of Animal Science

View full text Add to dashboard Cite

Shellfish aquaculture is a widespread activity in the Italian peninsula. However, only two bivalve species are mainly cultured along the coastline of that country: the Mediterranean mussel Mytilus galloprovincialis and the Manila clam Venerupis philippinarum (Ruditapes philippinarum). By contrast, just a few other mollusc species of commercial interest are scarcely reared at a small-scale level.After analysing the current status of Italian shellfish production, this paper reports and discusses the potential for culturing several different invertebrate species [i.e., the European flat oyster Ostrea edulis, the grooved carpet shell Venerupis decussata (Ruditapes decussatus), the razor clams Ensis minor and Solen marginatus, the cephalopod Octopus vulgaris, and the purple sea urchin Paracentrotus lividus] in this country.In addition, a detailed overview of the progress made in aquacultural techniques for these species in the Mediterranean basin is presented, highlighting the most relevant bottlenecks and the way forward to shift from the experimental to the aquaculture phase. Finally, an outlook of the main economic and environmental benefits arising from these shellfish culture practices is also given.

show abstract

Nutrient absorption, storage and remobilization inoctopus vulgaris

Cited by 124 publications

References 14 publications

Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya

Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya

Lipid composition of the mantle and digestive gland of Octopus vulgaris juveniles (Cuvier, 1797) exposed to prolonged starvation

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

Contact Info

Product

Resources

About