scholarly journals Marine amphipods (Parhyale hawaiensis) as an alternative feed for the lined seahorse (Hippocampus erectus, Perri 1810): nutritional value and feeding trial

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12288
Author(s):  
Jorge Arturo Vargas-Abúndez ◽  
Gemma Leticia Martínez-Moreno ◽  
Nuno Simões ◽  
Elsa Noreña-Barroso ◽  
Maite Mascaró
Keyword(s):  
Nutritional Value ◽  
Fish Growth ◽  
Omega 3 ◽  
Feeding Trial ◽  
Marine Aquaculture ◽  
Growth And Survival ◽  
Hippocampus Erectus ◽  
Parhyale Hawaiensis ◽  
Marine Amphipod ◽  
Potential Use

Finding new alternatives to traditional live preys such as Artemia and rotifers, which do not always promote optimal fish growth and survival, is required for the successful aquaculture of highly specialized predatory species, including seahorses. The present study assessed the nutritional value of an interesting marine amphipod (Parhyale hawaiensis), and evaluates through a feeding trial its potential use as a natural prey for 10-months lined seahorse, Hippocampus erectus. P. hawaiensis showed high levels of valuable lipids (20.4–26.7% on dry matter basis) and polyunsaturated fatty acids (PUFAs) ( 26.4–41% of total FAs), including the long-chain PUFAs (LC-PUFAs) arachidonic acid (ARA) (2.9–7.7%), eicosapentaenoic acid (EPA) (4.3–6.5%) and docosahexaenoic acid (DHA) (2.1–6.2%). A comparison between wild-captured and cultured amphipods revealed a significant improvement of the amphipod FA profile in terms of DHA%, total omega-3 (n3) FAs and n3/n6 ratio when employing both a conventional amphipod culture based on a commercial shrimp diet, and, to a lesser extent, a large (3,500 L) biofloc system. Seahorses fed with frozen/wild amphipods, either singly or in combination with Artemia enriched with Super Selco® (INVE Aquaculture, Belgium) for 57 days, substantially improved seahorse growth and FA profiles in terms of ARA, EPA and DHA%, including indices associated to marine sources, such as Σn3 and n3/n6, compared to a diet based solely on enriched Artemia. These results support the use of marine amphipods as an alternative food organism for juvenile H. erectus and suggest a potential use for general marine aquaculture.

Effect of a carnivorous diet on the lipids, fatty acids and condition of Antarctic krill, Euphausia superba

2007 ◽  
Vol 19 (2) ◽  
pp. 183-188 ◽  
Author(s):  
Wilhelm Hagen ◽  
Toshihiro Yoshida ◽  
Patti Virtue ◽  
So Kawaguchi ◽  
Kerrie M. Swadling ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Polar Lipid ◽  
Antarctic Krill ◽  
Euphausia Superba ◽  
Dry Mass ◽  
Fatty Acid Profiles ◽  
Omega 3 ◽  
Feeding Trial ◽  
Growth And Survival ◽  
In The Wild

AbstractKrill are thought to be predominantly herbivorous, but a heterotrophic diet might be crucial for their growth and survival. To compare the influence of herbivory and carnivory on krill we conducted a nine month feeding trial. We examined lipid composition of the hepatopancreas, abdomen and remaining body portions of krill fed diatoms at bloom condition levels, and diatoms with the addition of pellets or minced clam meat to simulate a partly carnivorous diet. Mortality, dry mass and lipid content were similar among treatments. We examined lipid class and fatty acid profiles, with emphasis placed on the ratio of storage (triacylglycerol) to structural (polar lipid) lipid and key essential omega 3 polyunsaturated fatty acids: 20:5ω3 and 22:6ω3. The triacylglycerol : polar lipid ratio increased in krill fed on the mixed diet as did the 20:5ω3 : 22:6ω3 ratio. Overall these findings indicate that provision of clam in the diet improved krill condition, and further suggest that carnivory may aid krill growth in the wild under certain environmental conditions.

In search of a reference protein to replace "vitamin-free casein" in lobster nutrition studies

1982 ◽  
Vol 60 (9) ◽  
pp. 2033-2038 ◽  
Author(s):  
Andrew D. Boghen ◽  
John D. Castell ◽  
Douglas E. Conklin
Keyword(s):  
Mytilus Edulis ◽  
Sea Urchin ◽  
Brine Shrimp ◽  
Nutritional Value ◽  
Artemia Salina ◽  
Protein Isolate ◽  
Feeding Trial ◽  
Growth And Survival ◽  
Cancer Irroratus ◽  
Reference Protein

The possible nutritional value of proteins prepared by isopropanol extraction of soft flesh of the sea urchin (Strongylocentrotus drobachiensis), mussels (Mytilus edulis L.), crab (Cancer irroratus), and shrimp tails (Penaeus sp.) was compared with casein in semipurified diets for juvenile lobsters. So that results of the feeding trial could be compared with other nutrition studies, a standard casein–albumin diet and frozen adult brine shrimp (Artemia salina) were fed as reference diets. While diets containing crab, mussel, and sea urchin protein all resulted in significantly greater survival than the casein-based diet, the diet containing crab protein alone was superior in both growth and survival. The diet consisting of shrimp protein was inferior to casein in all respects. The possibility of replacing casein with a crab protein isolate in reference diets for lobster nutrition studies is discussed.

Growth and Survival of Juvenile Lined Seahorse (Hippocampus erectus) at Different Food Densities

2012 ◽  
Vol 18 (4) ◽  
pp. 617
Author(s):  
Fei YIN ◽  
Baojun TANG ◽  
Dong ZHANG ◽  
Jiangang WANG
Keyword(s):  
Growth And Survival ◽  
Hippocampus Erectus

Prey patchiness and larval fish growth and survival: inferences from an individual-based model

1997 ◽  
Vol 95 (1) ◽  
pp. 29-43 ◽  
Author(s):  
Benjamin H. Letcher ◽  
James A. Rice
Keyword(s):  
Larval Fish ◽  
Fish Growth ◽  
Individual Based Model ◽  
Growth And Survival

scholarly journals STUDY OF BIOLOGY AND NUTRITIONAL VALUE OF ULVA RIGIDA C. AG. AS A PROMISING TARGET SPECIES FOR MARINE AQUACULTURE

Fisheries ◽  
2020 ◽  
Vol 2020 (4) ◽  
pp. 94-100
Author(s):  
Olga Bityutskaya ◽  
Lyubov Bulli ◽  
Liudmila Donchenko
Keyword(s):  
Nutritional Value ◽  
Vegetative Reproduction ◽  
Carbohydrate Component ◽  
Target Species ◽  
Ulva Rigida ◽  
High Concentration ◽  
Food Ingredient ◽  
Marine Aquaculture ◽  
Biological Features ◽  
Promising Target

The haplodiplobion life cycle with sporic meiosis and isomorphic alternation of generations, the ability for vegetative reproduction, the rapid growth of thallus, a large amount of produced cells, and high specific production make Ulva rigida C. Ag. attractive for marine aquaculture. The paper is devoted to study biological features of Ulva growth and nutritional value under artificial conditions. It is shown how environmental factors affect the germination and formation of new plants. Preliminary data on nutritional value allow us to consider Ulva to low-calorie foods with a rich carbohydrate component. The mineral composition and a high concentration of iodine indicate the feasible usage of Ulva as a functional food ingredient.

scholarly journals The Effect of Nitrogen Input on Chemical Profile and Bioactive Properties of Green- and Red-Colored Basil Cultivars

Antioxidants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1036 ◽  
Author(s):  
Luís R. O. Cruz ◽  
Ângela Fernandes ◽  
Francesco Di Gioia ◽  
Spyridon A. Petropoulos ◽  
Nikolaos Polyzos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Nutritional Value ◽  
Quadratic Function ◽  
Omega 3 ◽  
Chemical Profile ◽  
Chemical Parameters ◽  
Leaf Extracts ◽  
N Input ◽  
Omega 6 ◽  
Antibacterial And Antifungal

In the present study, three red-colored (Dark Opal, Basilico Rosso, and Red Basil) and one green-colored landrace (Mitikas) of basil (Ocimum basilicum L.) were grown under four nitrogen regimes, namely Control (no fertilizer added), 200 ppm, 400 ppm, and 600 ppm of nitrogen (N). Fresh yield varied depending on N input following a quadratic function in all four genotypes, and green basil performed better compared to the red cultivars. A significant interaction of genotype × N input was recorded for most of the chemical parameters measured. Tocopherols contents of leaves were consistently higher in plants that received 200 ppm of N and lower in those receiving 600 ppm of N, especially in Dark Opal and Red Basil cultivars. Polyunsaturated fatty acids (PUFA) were the major category of fatty acids and Red Basil had the lowest ratio of omega-6/omega 3 (0.29) and thus the best fatty acid profile. Polyphenols content was the highest in Red Basil and Dark Opal (25 mg/g of extract on average) and the lowest in Mitikas and decreased with increasing N input. Similarly, antioxidant activity was the highest in Dark Opal and Red Basil fertigated with 200 ppm of N, whereas all the leaf extracts tested had good antibacterial and antifungal activity. In conclusion, basil chemical and bioactive profile was significantly influenced by both genotype and N input. Red-colored basil, although less productive, had the best chemical profile, and moderate levels of N input may provide the best compromise between yield, nutritional value, and bioactivity for the species.

scholarly journals Grape Pomace: A Potential Ingredient for the Human Diet

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1772
Author(s):  
Paula Pereira ◽  
Carla Palma ◽  
Cíntia Ferreira-Pêgo ◽  
Olga Amaral ◽  
Anabela Amaral ◽  
...  
Keyword(s):  
Industrial Production ◽  
Nutritional Value ◽  
Essential Element ◽  
Grape Pomace ◽  
Human Nutrition ◽  
Arsenic Content ◽  
Nutrition And Health ◽  
Human Diet ◽  
Potential Use

The industrial production of wine generates annually tons of waste that can and must be properly reused to reduce its polluting load ad increase the availability of passive ingredients to be used in human nutrition. Grape pomace, a by-product of winemaking, beyond being of nutritional value is a bioactive source with high potential value and benefits for human health. Having as main goal the preliminary perception of the potential use of this by-product, the aim of this study was the characterization of eight different grape pomaces. In this sense, ash content, relative ash, moisture, pH, microorganisms, metals (Al, Cd, Cr, Cu, Fe, Hg, Li, Mn, Ni, Pb, and Zn), and semi-metal (As) were reported. The parameter that limits the daily amount ingested of this product is its arsenic content, a non-essential element that belongs to the group of semi-metal. Considering the obtained results and in the light of the restrictions imposed through the legislation in regulations set by the European Commission, the inclusion of grape pomace in the industrial production of foodstuffs could be a step towards the future of human nutrition and health.

Evaluation of Anti-inflammatory, Antinociceptive, and Antipyretic Activities of Prunus persica var. nucipersica (Nectarine) Kernel

Planta Medica ◽  
2019 ◽  
Vol 85 (11/12) ◽  
pp. 1016-1023 ◽  
Author(s):  
Abdelsamed Ibrahim Elshamy ◽  
Heba Mohammed Ibrahim Abdallah ◽  
Abd El-Nasser Gaber El Gendy ◽  
Walla El-Kashak ◽  
Beatrice Muscatello ◽  
...  
Keyword(s):  
Nutritional Value ◽  
Prunus Persica ◽  
Phenolic Content ◽  
Bioactive Molecules ◽  
Control Group ◽  
Alcoholic Extract ◽  
Phenolic Constituents ◽  
Anti Inflammatory ◽  
Promising Source ◽  
Potential Use

AbstractNectarine (Prunus persica var. nucipersica) is a worldwide appreciated edible subspecies, with a high nutritional value and benefits on human health due to its phenolic content. Despite the large consumption of the fruit, the potential use of its kernel is poorly studied. Herein, the potential pharmacological activities and the phenolic constituents of an alcoholic extract of kernel nectarine fruits were investigated. Administering nectarine kernel extract (50 and 100 mg/kg, respectively) in rats reduced paw edema after carrageenan injection by 11 and 47% in 1 h, 24 and 33% in 2 h, and 23 and 32% in 4 h, when compared to the controls. At the higher dose (100 mg/kg), nectarine kernel extract increased the reaction time in the hot-plate model and produced a significant decrease in the rectal temperature of the pyretic rats, while both doses produced 52 and 59% of writhing inhibition compared to the control group. Total polyphenolic (55.91 ± 5.78 mg/g) and flavonoid (29.89 ± 0.55 mg/g) content indicated that the extract is a promising source of these constituents. HPLC-ESI-MS/MS analysis demonstrated the presence of flavonoids, such as naringenin and apigenin glycosides. The cyanogenic glycosides amigdalin and prunasin were also detected. These results highlight the anti-inflammatory, analgesic, and antipyretic activities of nectarine kernel alcoholic extract, together with significant phenolic content, promoting its exploitation as a source of bioactive molecules.

scholarly journals Effects of frying fat and preparation on carp (Cyprinus carpio) fillet lipid composition and oxidation

2014 ◽  
Vol 32 (No. 5) ◽  
pp. 493-502 ◽  
Author(s):  
S. Sampels ◽  
T. Zajíc ◽  
J. Mráz
Keyword(s):  
Fatty Acids ◽  
Rapeseed Oil ◽  
Nutritional Value ◽  
Saturated Fatty Acids ◽  
Omega 3 ◽  
Fa Composition ◽  
Carp Cyprinus Carpio ◽  
Fat Uptake ◽  
Pan Frying ◽  
Frying Fat

We investigated the changes in omega 3 enriched carp fillets caused by pan frying. The investigated characteristics were fat uptake, fatty acid (FA) composition, and oxidation. Four different fats were used and fillets were fried plain or battered. The fillet fat content increased during frying and FA composition in the fillets reflected the composition of the frying fat. Frying with sunflower oil negatively influenced the nutritional value by decreasing the n-3/n-6 ratio in the fillets. Frying with rapeseed oil preserved the favourable n-3/n-6 ratio without increasing the saturated fatty acids (SFA). Frying with lard and butter preserved the n-3/n-6 ratio but increased the SFA content. No increased oxidation occurred with the use of rapeseed oil. We concluded that using rapeseed oil for fish seemed to preserve the nutritionally valuable composition best.  

Potential Use of Rum Distillery Slops as Animal Feed Supplement I. Mold Growth in Slops.

1969 ◽  
Vol 63 (3) ◽  
pp. 325-329
Author(s):  
Isabel M. González ◽  
Nivia F. Murphy
Keyword(s):  
Nutritional Value ◽  
Animal Feed ◽  
Growth Media ◽  
Mold Growth ◽  
Feed Supplement ◽  
Aspergillus Phoenicis ◽  
Potential Use

Consideration of the nutritional value of slops suggested its use as growth media for the production of fodder molds. Rum distillery slops supported better mold growth than the medium recommended for its growth. Best results were obtained with strain Aspergillus phoenicis isolated from contaminated slops in our laboratory.

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