Effects of dietary DHA/EPA ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (<i>Portunus trituberculatus</i>)

Hu, Shuixin; Wang, Jiteng; Han, Tao; Li, Xinyu; Jiang, Yudong; Wang, Chunlin

doi:10.1111/are.12971

Cited by 17 publications

(15 citation statements)

References 43 publications

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“…One approach to improve crab survival and production is to develop nutrient balanced and quality consistent feed. There already are some studies focus on nutritional requirements of juvenile swimming crab, such as dietary protein (Huo et al., ; Jin et al., ), dietary phospholipids (Li et al., ; Wang et al., ), dietary cholesterol (Han et al., ) and dietary DHA/EPA ratios (Hu et al., ). However, only a few nutritional studies for early life stage (Wang, Yang, Li, Wang, & Han, ).…”

Section: Introductionmentioning

confidence: 99%

Effect of dietary lipid levels on growth performance, fatty acid profile and enzymatic activity of juvenile swimming crab,Portunus trituberculatus

Han

Yang

et al. 2018

Aquac Res

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The main objective of this investigation was to study the lipid requirements of the early juvenile (C1) swimming crab (Portunus trituberculatus) based on growth performance, survival, moulting and fatty acid profile. Four test diets were formulated with graded lipid levels (3.63%, 6.70%, 10.72% and 13.91%). Each diet was fed to 4 replicates of crabs (30 crabs per replicate initial weight (8.4 AE 0.1 mg). In this study, crabs fed diets with 13.91% lipid had significantly (p < 0.05) higher survival than crabs fed with 3.63% lipid, but no significant (p > 0.05) improvement of survival was observed when dietary lipid increase from 6.70% to 13.91%. Crabs fed diets with 10.72% and 13.91% lipid had significant higher weight gain(WG) than crabs fed with 3.63% lipid. While crabs fed with diets containing 6.70%, 10.72% and 13.91% lipid showed no significant (p > 0.05) difference in weight gain(WG). Moreover, the lowest moulting number was observed in crabs fed diets with 3.63% lipid, but there was no significant difference (p > 0.05) among other groups. The content of LC-PUFA and DHA in the crabs fed diets with 3.63% lipid was significant (p < 0.05) lower compared to other groups. But there was no significant (p > 0.05) difference in EPA and ARA content among all groups. The activity of lipase increased as dietary lipid level increased (from 6.70% to 10.72%). However, beyond 10.72%, a significant (p < 0.05) decreased in lipase activity was observed. The regression analysis of weight gain data indicated that crab fed diet containing 10.47% lipid level is considered as optimum lipid level for its maximum growth and moulting process.

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Section: Introductionmentioning

confidence: 99%

Effect of dietary lipid levels on growth performance, fatty acid profile and enzymatic activity of juvenile swimming crab,Portunus trituberculatus

Han

Yang

et al. 2018

Aquac Res

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“…Marine crustaceans have a limited capacity to synthesize n‐3 LC‐PUFA (such as DHA and EPA) to meet metabolic requirements, so they must obtain these fatty acids from diets (Hu et al, ). The results of present study showed that fatty acid composition in hepatopancreas and muscle reflected the dietary fatty acids profiles.…”

Section: Discussionmentioning

confidence: 99%

“…Similar results have also been observed in some previous studies (Du et al, ; Li et al, ; Unnikrishnan, Chakraborty, & Paulraj, ). Moreover, numerous studies have shown that fatty acid composition of diets can alter hepatopancreas or muscle fatty acid composition in aquatic animals (Ding et al, ; Hu et al, ). The present study demonstrated that different dietary fatty acid profiles could impact on tissue fatty acid composition and biosynthesis in swimming crab, and further studies are required.…”

Section: Discussionmentioning

confidence: 99%

Effects of different dietary lipid sources on growth performance, antioxidant enzyme activities and biochemical composition of juvenile swimming crab, Portunus trituberculatus

et al. 2019

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An 8‐week feeding trial was conducted to evaluate the effects of dietary lipid sources on growth performance, antioxidant enzyme activities and biochemical composition of juvenile swimming crab Portunus trituberculatus of initial weight 2.34 ± 0.08 g. Four different diets were formulated to contain fish oil (FO), soybean oil (SO), linseed oil (LO) or palm oil (PO). The highest final body weight, weight gain, specific growth rate and molting frequency were observed in crabs fed the FO diet. Crabs fed the SO diet showed higher glutathione peroxidase, superoxide dismutase (SOD) and catalase (CAT) activities in both serum and hepatopancreas than those fed the FO diet. The lowest malondialdehyde concentration in hepatopancreas and serum were occurred at crabs fed the SO diet. Crabs fed the LO diet had significantly higher SOD and CAT activities in hepatopancreas compared with those fed the FO diet. Crabs fed the PO diet had the highest activities of fatty acid synthase and carnitine palmitoyltransferase 1 activities in hepatopancreas among all treatments. Fatty acid compositions both in hepatopancreas and muscle reflected those of diets. Overall, these findings demonstrated that physiological–biochemical characteristics and lipid metabolism were significantly regulated by different dietary lipid sources. Moreover, dietary SO and LO supplementation could improve antioxidant ability.

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“…Marine organisms with a wide biogeographic distribution that inhabit heterogeneous environments can show variations in the composition and profiles of fatty acids with latitude [ 35 , 36 ]. This variability in fatty acid profiles can result, for example, from variations in the essential fatty acids that are obtained through the organism’s diet and cannot be synthesized by the organism itself [ 31 , 37 , 38 ]. For instance, eicosapentaenoic (EPA, 20: 5ω3) and docosahexaenoic (DHA, 22: 6ω3) acids are highly unsaturated fatty acids, which are essential for organisms living at high latitudes (i.e., at low temperatures) because these fatty acids maintain fluidity and the optimal functioning of membranes [ 31 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Latitudinal changes in the lipid content and fatty acid profiles of juvenile female red squat lobsters (Pleuroncodes monodon) in breeding areas of the Humboldt Current System

et al. 2021

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The red squat lobster Pleuroncodes monodon is a species of high commercial value that inhabits the Humboldt Current System. Along the Chilean coast, two populations are exploited by the fishing industry, one located off the coast of Coquimbo and the other off the coast of Concepción. Yet, it is unknown whether there are differences in the “bioenergetic fuel” (measured as lipid content and fatty acid profile) of juvenile populations of these two fishing units and whether these bioenergetic compounds can be modulated by differences in the environmental parameters (such as temperature or chlorophyll-a) of their breeding areas. To shed some light on this, we measured the lipid content and fatty acid profiles of the viscera and muscle of juvenile female red squat lobsters from these two fishing units, specifically from breeding areas near long-exploited fishing grounds: a) the northern fishing unit (NFU, from 26°S to 30°S) and b) the southern fishing unit (SFU, from 32°S to 37°S). We found differences in the lipid content, fatty acid profiles, and ratios of saturated fatty acids (C16:0/C18:0) of juvenile females from these two locations. In addition, the essential fatty acids (DHA/EPA) found in the viscera versus the muscle of these lobsters varied significantly. Juvenile females from the SFU (i.e. Concepción) showed a higher lipid content compared to the juvenile females from the NFU (i.e. Coquimbo). Consistently, individuals from the SFU had a higher content of fatty acids, which also proved to be richer in saturated and monounsaturated fatty acids compared to those from the NFU. Our results are important for the fisheries in both areas because these juvenile populations are the source of new recruits for the adult populations that are exploited by the fishing industry. Our study also aids in determining which populations are healthier or of better quality in bioenergetic terms. Furthermore, increasing the incorporation of bioenergetic parameters in fishery models is essential for the recruitment and stock assessment within an ecosystem approach, since it allows for the evaluation of the nutritional condition of different fishing populations.

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Effects of dietary DHA/EPA ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (Portunus trituberculatus)

Cited by 17 publications

References 43 publications

Effect of dietary lipid levels on growth performance, fatty acid profile and enzymatic activity of juvenile swimming crab,Portunus trituberculatus

Effect of dietary lipid levels on growth performance, fatty acid profile and enzymatic activity of juvenile swimming crab,Portunus trituberculatus

Effects of different dietary lipid sources on growth performance, antioxidant enzyme activities and biochemical composition of juvenile swimming crab, Portunus trituberculatus

Latitudinal changes in the lipid content and fatty acid profiles of juvenile female red squat lobsters (Pleuroncodes monodon) in breeding areas of the Humboldt Current System

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