“…The FA profiles of cultivated specimens (SPC, MPC and LPC) and wild polychaetes (WP) are in agreement with previous studies (Table 4) reporting that the most abundant FA recorded in cultured and wild polychaetes are pal mitic acid, stearic acid, oleic acid and EPA (García-Alonso et al 2008, Bischoff et al 2009, Techaprempreecha et al 2011, Lillebø et al 2012. Of these, EPA (8.34 ± 0.36 µg g −1 DW in LPC and 5.51 ± 0.29 µg g −1 DW in WP) was the most abundant HUFA present in polychaete biomass.…”
Section: Discussionsupporting
confidence: 89%
“…AA was detected in all samples of polychaetes (WP, SPC, MPC and LPC with 0.84 ± 0.10, 0.99 ± 0.33, 1.25 ± 0.15 and 1.61 ± 0.17 µg g −1 DW, respectively) and takes part in several metabolic pathways in invertebrates, e.g. Perinereis nuntia (Techaprempreecha et al 2011) and Nereis virens (Brown et al 2011). This FA can also be biosynthesized from linoleic acid (Bischoff et al 2009).…”
Section: Discussionmentioning
confidence: 99%
“…larval stages), thus being paramount when selecting ingredients to fulfil the nutritional needs of cultured marine fish (Bell & Sargent 2003). According to other studies, palmitic acid (16:0) represents one of the most abundant saturated FAs present in polychaetes (García-Alonso et al 2008, Brown et al 2011, Techaprempreecha et al 2011, Santos et al 2016. Palmitic acid is the first FA to be biosynthesized and is a precursor of longer-chain saturated FA (Nelson & Cox 2004).…”
Section: Discussionmentioning
confidence: 99%
“…The nutritional value of ragworms is well established in marine aquaculture, with these organisms being a highly valued item in marine finfish and shrimp maturation diets (Olive 1999, Techaprempreecha et al 2011, Santos et al 2016. One of the main reasons for their popularity is their fatty acid (FA) profile, namely the levels they display of important polyunsaturated FA (PUFA) (Brown et al 2011, Santos et al 2016.…”
Section: Adding Value To Ragworms (Hediste Diversicolor) Through the mentioning
The aim of this study was to evaluate the potential added value of Hediste diversicolor, cultured for 5 mo in sand bed tanks supplied with effluent water from a super-intensive marine fish farm, by comparing their fatty acid (FA) profile with that of wild specimens. The polychaetes showed an approximately 35-fold increase in biomass during the experimental period and their FA profile was significantly different from that of wild specimens. In cultivated specimens, the most abundant FA class was that of highly unsaturated FA (HUFA), with eicosapentaenoic acid (EPA, 20:5n-3) being the best represented. Similar percentage (SIMPER) analysis showed an average 20.2% dissimilarity between the FA profile of wild and cultivated specimens, supporting the view that the culture system employed enables the recovery of high value nutrients (e.g. EPA and docosahexaenoic acid [DHA, 22:6n-3]) from fish feeds into the tissues of H. diversicolor that would otherwise be lost from the production environment. While the nutritional value of wild ragworms is well established in marine aquaculture (namely for broodstock maturation diets), the higher level of DHA displayed by the specimens produced under the proposed culture system may grant them a premium market value. KEY WORDS: Integrated multi-trophic aquaculture • IMTA • Polychaete-assisted sand filters • Fatty acids Ragworms (Hediste diversicolor) on sand filters of a superintensive brackish-water fish farm, cultured using the farm's organic-rich effluent and displaying a greater content of docosahexaenoic acid (DHA, 22:6n-3) than wild conspecifics.
“…The FA profiles of cultivated specimens (SPC, MPC and LPC) and wild polychaetes (WP) are in agreement with previous studies (Table 4) reporting that the most abundant FA recorded in cultured and wild polychaetes are pal mitic acid, stearic acid, oleic acid and EPA (García-Alonso et al 2008, Bischoff et al 2009, Techaprempreecha et al 2011, Lillebø et al 2012. Of these, EPA (8.34 ± 0.36 µg g −1 DW in LPC and 5.51 ± 0.29 µg g −1 DW in WP) was the most abundant HUFA present in polychaete biomass.…”
Section: Discussionsupporting
confidence: 89%
“…AA was detected in all samples of polychaetes (WP, SPC, MPC and LPC with 0.84 ± 0.10, 0.99 ± 0.33, 1.25 ± 0.15 and 1.61 ± 0.17 µg g −1 DW, respectively) and takes part in several metabolic pathways in invertebrates, e.g. Perinereis nuntia (Techaprempreecha et al 2011) and Nereis virens (Brown et al 2011). This FA can also be biosynthesized from linoleic acid (Bischoff et al 2009).…”
Section: Discussionmentioning
confidence: 99%
“…larval stages), thus being paramount when selecting ingredients to fulfil the nutritional needs of cultured marine fish (Bell & Sargent 2003). According to other studies, palmitic acid (16:0) represents one of the most abundant saturated FAs present in polychaetes (García-Alonso et al 2008, Brown et al 2011, Techaprempreecha et al 2011, Santos et al 2016. Palmitic acid is the first FA to be biosynthesized and is a precursor of longer-chain saturated FA (Nelson & Cox 2004).…”
Section: Discussionmentioning
confidence: 99%
“…The nutritional value of ragworms is well established in marine aquaculture, with these organisms being a highly valued item in marine finfish and shrimp maturation diets (Olive 1999, Techaprempreecha et al 2011, Santos et al 2016. One of the main reasons for their popularity is their fatty acid (FA) profile, namely the levels they display of important polyunsaturated FA (PUFA) (Brown et al 2011, Santos et al 2016.…”
Section: Adding Value To Ragworms (Hediste Diversicolor) Through the mentioning
The aim of this study was to evaluate the potential added value of Hediste diversicolor, cultured for 5 mo in sand bed tanks supplied with effluent water from a super-intensive marine fish farm, by comparing their fatty acid (FA) profile with that of wild specimens. The polychaetes showed an approximately 35-fold increase in biomass during the experimental period and their FA profile was significantly different from that of wild specimens. In cultivated specimens, the most abundant FA class was that of highly unsaturated FA (HUFA), with eicosapentaenoic acid (EPA, 20:5n-3) being the best represented. Similar percentage (SIMPER) analysis showed an average 20.2% dissimilarity between the FA profile of wild and cultivated specimens, supporting the view that the culture system employed enables the recovery of high value nutrients (e.g. EPA and docosahexaenoic acid [DHA, 22:6n-3]) from fish feeds into the tissues of H. diversicolor that would otherwise be lost from the production environment. While the nutritional value of wild ragworms is well established in marine aquaculture (namely for broodstock maturation diets), the higher level of DHA displayed by the specimens produced under the proposed culture system may grant them a premium market value. KEY WORDS: Integrated multi-trophic aquaculture • IMTA • Polychaete-assisted sand filters • Fatty acids Ragworms (Hediste diversicolor) on sand filters of a superintensive brackish-water fish farm, cultured using the farm's organic-rich effluent and displaying a greater content of docosahexaenoic acid (DHA, 22:6n-3) than wild conspecifics.
“…), and red macro algae (Gracilaria sp.). Then, the farmed sandworms were starved for two days to clear the digestive tract before putting them on ice and then frozen at −70°C until used following the procedure of Techaprempreecha et al (2011). Live wild sandworms were obtained from the Bandar Abbas beach, Hormozgan province, Iran, in August 2015 and starved for two days before putting them on ice and freezing them at −70°C.…”
To investigate the effect of different food items on fatty acids profile of Perinereis nuntia worms, Polychaete worms mentioned above were collected from the tidal shores of Bandar Abbas . In this study three treatments included nutritional Commercial post larval shrimp, green algae (Entermorpha. sp.) and red algae (Gracillaria. sp) each with three replications dry was used to feed the worms. Feeding twice daily and 10% of the body weight of worm for two months was conducted. The results showed that different treatments in terms of food fatty acid profile there is a significant difference (P<0.05) . Most fatty acids (SFA) 35.88 ± 0.01, (MUFA) 43.82 ± 0.01 and (PUFA) 108.98 ± 0.01 (mg g -1 ) of polychaete worms were fed red algae. Results suggest that Perinereis nuntia fed red algae have a well-balanced nutritional profile for penaeid shrimp and fish broodstock.
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