Changes in lipid composition of different tissues of common octopus (Octopus vulgaris) during short-term starvation

Abstract

In this work, we study the variations in concentration (mg 100 g−1 dry weight) and total content (mg individual−1) of different lipid classes in muscle and the digestive gland of Octopus vulgaris during an 8‐day starvation period. In all the samples analysed, polar lipids (PL) predominated in muscle (267.3–337.2 mg 100 g−1) compared with neutral lipids (66.9–104.7 mg 100 g−1). A significant positive tendency was observed in muscle for the content and concentration of monoglycerides as a consequence of starvation (P < 0.05). Furthermore, a higher cholesterol (CHO) content was detected in this tissue after the fourth day of starvation compared with the fed animals (P < 0.05). Neutral lipids predominated in the digestive gland (12 958–14 151 mg 100 g−1) compared with PL (3157–6517 mg 100 g−1), with triglycerides, free fatty acids and monoglycerides being the major lipid classes. The concentration of PL and monoglycerides showed a positive trend with starvation, while the triacylglycerol showed a negative tendency (P < 0.05). The results suggest that triglycerides and CHO are transported simultaneously from the digestive gland to the muscular tissues during starvation and the preferential use of PL and CHO during growth phases. It was estimated that lipids contributed 26% of the energy costs of the animals during starvation, mainly in the form of triglycerides from the digestive gland.

Effect of two fresh diets and sexual maturation on the proximate and fatty acid profile of several tissues inOctopus vulgaris: specific retention of arachidonic acid in the gonads

“…() and could suggest the use of lipids as energy reserves also in muscle, where little lipid content was associated with structural rather than energetic functions (Navarro & Villanueva , ; Morillo Velarde et al . ).…”

“…; Morillo Velarde et al . ). Also, this organ reflects the dietary lipid profile, both in quantity and quality (Estefanell et al .…”

High feeding and growth rates in common octopus (Octopus vulgaris ) fed formulated feeds with an improved amino acid profile and mixture of binders

“…; Cerezo Valverde, Hernández et al . ), but are also indicative of the condition of the animals since lipids can be used in the form of triglycerides during periods of fasting (García‐Garrido, Hachero‐Cruzado, Garrido, Rosas & Domingues ; Morillo‐Velarde, Cerezo Valverde, Serra Llinares & García García ). Therefore, the higher levels of GEL‐10 fish diet could be responsible for the further accumulation of lipids in the digestive gland.…”

“…; Morillo‐Velarde et al . ; Estefanell, Socorro, Izquierdo & Roo ). In this respect, squid Todarodes saggitatus , small low‐lipid fish, crab Carcinus mediterraneus and egg yolk powder were selected according to its lipid class composition (Cerezo Valverde et al .…”

The effects on some non-enzymatic antioxidants and oxidative stress ofAstacus leptodactylus(Esch., 1823) of starvation periods

“…Starvation or undernutrition during life cycle of aquatic organisms can occur either in the natural environment or under culture conditions due to spatial and temporal patchiness of feed resources (Zhang, Zhang, Li, & Gao, ). In recent years, it was determined that starvation has an effect on growth (Eroldogan, Kumlu, Kırıs, & Sezer, ; Li et al., ), oxidative stress parameters (Furne et al., ), some antioxidant indexes (Li et al., ), oxygen consumption, metabolic enzymes (Powell & Watts, ), blood biochemical parameters (Shi et al., ), immune system (Verghese, Radhakrishnan, & Padhi, ), protein (Garcia‐Garrido, Hachero‐Cruzado, Rosas, & Domingues, ; Muhlia‐Almazan, Sanchez‐Paz, Garcia Carreno, Peregrino‐Uriarte, & Yepiz‐Plascencia, ), lipid and fatty acids (Cicek & Kumlu, ; Durazo‐Beltran, Viana, D'Abrama, & Toro‐Vazquez, ; Morillo‐Velarde, Valverde, Llinares, & Garcia, ; Smith, Thompson, Ritar, & Dunstan, ) and reproduction (Chatzifotis, Papadaki, Despoti, Roufidou, & Antonopoulou, ) of aquatic organisms. At present, the effects of starvation in Astacus leptodactylus have yet to be investigated.…”