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Sukhovskaya IV, Lysenko LA, Fokina NN, Kantserova NP, Borvinskaya EV. Survival, Growth Performance, and Hepatic Antioxidant and Lipid Profiles in Infected Rainbow Trout ( Oncorhynchus mykiss) Fed a Diet Supplemented with Dihydroquercetin and Arabinogalactan. Animals (Basel) 2023; 13:ani13081345. [PMID: 37106908 PMCID: PMC10135201 DOI: 10.3390/ani13081345] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/27/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Natural feed supplements have been shown to improve fish viability, health, and growth, and the ability to withstand multiple stressors related to intensive cultivation. We assumed that a dietary mix of plant-origin substances, such as dihydroquercetin, a flavonoid with antioxidative, anti-inflammatory, and antimicrobial properties, and arabinogalactan, a polysaccharide with immunomodulating activity, would promote fish stress resistance and expected it to have a protective effect against infectious diseases. Farmed rainbow trout fish, Oncorhynchus mykiss, received either a standard diet or a diet supplemented with 25 mg/kg of dihydroquercetin and 50 mg/kg of arabinogalactan during a feeding season, from June to November. The fish in the control and experimental groups were sampled twice a month (eight samplings in total) for growth variable estimations and tissue sampling. The hepatic antioxidant status was assessed via the quantification of molecular antioxidants, such as reduced glutathione and alpha-tocopherol rates, as well as the enzyme activity rates of peroxidase, catalase, and glutathione-S-transferase. The lipid and fatty acid compositions of the feed and fish liver were analyzed using thin-layer and high-performance liquid chromatography. The viability, size, and biochemical indices of the fish responded to the growth physiology, environmental variables such as the dissolved oxygen content and water temperature, and sporadic factors. Due to an outbreak of a natural bacterial infection in the fish stock followed by antibiotic treatment, a higher mortality rate was observed in the fish that received a standard diet compared to those fed supplemented feed. In the postinfection period, reduced dietary 18:2n-6 and 18:3n-3 fatty acid assimilation contents were detected in the fish that received the standard diet in contrast to the supplemented diet. By the end of the feeding season, an impaired antioxidant response, including reduced glutathione S-transferase activity and glutathione content, and a shift in the composition of membrane lipids, such as sterols, 18:1n-7 fatty acid, and phospholipids, were also revealed in fish fed the standard diet. Dietary supplementation with plant-origin substances, such as dihydroquercetin and arabinogalactan, decreases lethality in fish stocks, presumably though the stimulation of natural resistance in farmed fish, thereby increasing the economic efficacy during fish production. From the sustainable aquaculture perspective, natural additives also diminish the anthropogenic transformation of aquaculture-bearing water bodies and their ecosystems.
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Affiliation(s)
- Irina V Sukhovskaya
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | - Liudmila A Lysenko
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | - Natalia N Fokina
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | - Nadezhda P Kantserova
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
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Firkus TJ, Lika K, Dean N, Murphy CA. The consequences of sea lamprey parasitism on lake trout energy budgets. CONSERVATION PHYSIOLOGY 2023; 11:coad006. [PMID: 36911047 PMCID: PMC9994604 DOI: 10.1093/conphys/coad006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 01/22/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Parasitism is an energetically costly event for host species. Dynamic energy budget (DEB) theory describes the metabolic dynamics of an individual organism through its lifetime. Models derived from DEB theory specify how an organism converts food to reserves (maintenance-free energy available for metabolism) and allocates mobilized reserves to maintenance, growth (increase of structural body mass) and maturation or reproduction. DEB models thus provide a useful approach to describe the consequences of parasitism for host species. We developed a DEB model for siscowet lake trout and modeled the impact of sea lamprey parasitism on growth and reproduction using data collected from studies documenting the long-term effects following a non-lethal sea lamprey attack. The model was parameterized to reflect the changes in allocation of energy towards growth and reproduction observed in lake trout following sea lamprey parasitism and includes an estradiol module that describes the conversion of reproductive reserves to ovarian mass based on estradiol concentration. In our DEB model, parasitism increased somatic and maturity maintenance costs, reduced estradiol and decreased the estradiol-mediated conversion efficiency of reproductive reserves to ovarian mass. Muscle lipid composition of lake trout influenced energy mobilization from the reserve (efficiency of converting reserves allocated to reproduction into eggs) and reproductive efficiency. These model changes accurately reflect observed empirical changes to ovarian mass and growth. This model provides a plausible explanation of the energetic mechanisms that lead to skipped spawning following sea lamprey parasitism and could be used in population models to explore sublethal impacts of sea lamprey parasitism and other stressors on population dynamics.
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Affiliation(s)
- Tyler J Firkus
- Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, East Lansing, MI 48824, USA
| | - Konstadia Lika
- Department of Biology, University of Crete, GR-70013,P.O.Box 2208, Heraklion, Crete, Greece
| | - Noah Dean
- Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, East Lansing, MI 48824, USA
| | - Cheryl A Murphy
- Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, East Lansing, MI 48824, USA
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Duarte AM, Silva F, Mendes S, Pinto FR, Barroso S, Silva E, Neves A, Sequeira V, Magalhães M, Rebelo R, Assis C, Vieira AR, Gordo LS, Gil MM. Seasonal study of the nutritional composition of unexploited and low commercial value fish species from the Portuguese coast. Food Sci Nutr 2022; 10:3368-3379. [PMID: 36249977 PMCID: PMC9548369 DOI: 10.1002/fsn3.2937] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 11/09/2022] Open
Abstract
Target species diversification is essential for fisheries sustainability and fish market revitalization. Fish discards are a widely recognized problem resulting from fisheries worldwide, and are of major concern for all sector players, from administrations, to fishermen, and scientists. However, non-target species are seldom studied, and information on nutritional profiles and seasonal changes in nutritional properties is generally lacking. This study assessed the seasonal nutritional composition of two unexploited (Serranus cabrilla, Capros aper) and three low commercial value fish species (Trachurus picturatus, Spondyliosoma cantharus, and Trigla lyra), captured on the Portuguese coast over 1 year. Significant seasonal variations were observed in the nutritional composition of all the species studied. Moisture and ash contents varied from 70% to 81% and from 5% to 13%, respectively. The maximum fat contents were 5% for C. aper and 4% for T. picturatus, allowing to classify all studied fishes as lean. The highest protein contents were recorded for C. aper (25%) and S. cantharus (20%). The unexploited and low commercial value fish species studied were shown to be good fat and protein sources, comparable to commonly consumed species, such as cod and salmon, having a great potential to become commonly consumed fish in Portugal.
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Affiliation(s)
- Ana M. Duarte
- MARE – Marine and Environmental Sciences CentrePolytechnic of LeiriaPenichePortugal
| | - Frederica Silva
- MARE – Marine and Environmental Sciences CentrePolytechnic of LeiriaPenichePortugal
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Susana Mendes
- MARE – Marine and Environmental Sciences CentreESTM, Polytechnic of LeiriaPenichePortugal
| | - Filipa R. Pinto
- MARE – Marine and Environmental Sciences CentrePolytechnic of LeiriaPenichePortugal
| | - Sónia Barroso
- MARE – Marine and Environmental Sciences CentrePolytechnic of LeiriaPenichePortugal
| | - Elisabete Silva
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Ana Neves
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Vera Sequeira
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
- Departamento de Biologia Animal, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Maria Filomena Magalhães
- Departamento de Biologia Animal, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
- CE3C – Centre for Ecology, Evolution and Environmental ChangesFaculdade de Ciências, Universidade de LisboaLisbonPortugal
| | - Rui Rebelo
- Departamento de Biologia Animal, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
- CE3C – Centre for Ecology, Evolution and Environmental ChangesFaculdade de Ciências, Universidade de LisboaLisbonPortugal
| | - Carlos Assis
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
- Departamento de Biologia Animal, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Ana Rita Vieira
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
- Departamento de Biologia Animal, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Leonel Serrano Gordo
- MARE – Marine and Environmental Sciences Centre, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
- Departamento de Biologia Animal, Faculdade de CiênciasUniversidade de LisboaLisbonPortugal
| | - Maria Manuel Gil
- MARE – Marine and Environmental Sciences CentreESTM, Polytechnic of LeiriaPenichePortugal
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Luo G, Chen J, Ren Z. Regulation of Methylase METTL3 on Fat Deposition. Diabetes Metab Syndr Obes 2021; 14:4843-4852. [PMID: 34984016 PMCID: PMC8709552 DOI: 10.2147/dmso.s344472] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/08/2021] [Indexed: 11/23/2022] Open
Abstract
N6-methyladenosine (m6A) is the most prevalent and abundant type of internal post-transcriptional RNA modification in eukaryotic cells. METTL3 is a methylation modifying enzyme, which can directly or indirectly affect biological processes, such as RNA degradation, translation and splicing. In addition, it was found that 67% of 3'-UTR regions containing m6A sites had at least one miRNA binding site, and the number of m6A at 3'-UTR sites was closely related to the binding sites of miRNA. With the improvement of human living standards, obesity has become a very serious and urgent problem. The essence of obesity is the accumulation of excess fat. Exploring the origin and development mechanisms of adipocyte from the perspective of fat deposition has always been a hotspot in the field of adipocyte research. The aim of the present review is to focus on METTL3 regulating fat deposition through mRNA/adipocyte differentiation axis and pri-miRNA/pre-miRNA/target genes/adipocyte differentiation and to provide a theoretical basis according to the currently available literature for further exploring this association. This review may provide new insights for obesity, fat deposition disease and molecular breeding.
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Affiliation(s)
- Gang Luo
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, People’s Republic of China
| | - Jialing Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, People’s Republic of China
| | - Zhanjun Ren
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, People’s Republic of China
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Xu Y, Sismour E, Woods J, Robinson JM, Aldossari M, Ntiwunka-Ifeanyi C, Yousuf A, Abraha-Eyob Z, Lynch P. Characterization of Physicochemical Attributes and Muscle Protein Quality of Blue Catfish (Ictalurus furcatus) in Chesapeake Bay. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2020. [DOI: 10.1080/10498850.2020.1784342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Yixiang Xu
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | - Edward Sismour
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | - Jaron Woods
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | - Jayjuan M Robinson
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | - Mzuna Aldossari
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | | | - Adnan Yousuf
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | - Zaid Abraha-Eyob
- Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA
| | - Patricia Lynch
- Department of Family and Consumer Science, Virginia State University, Petersburg, Virginia, USA
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Quality Traits of Fillet of Gilthead Sea Bream (Sparus aurataL.) of Two Market Sizes Reared according to an “Antibiotic-Free” Approach. J FOOD QUALITY 2019. [DOI: 10.1155/2019/2614235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Rearing of “antibiotic-free” fish is becoming one of the most important goals to be achieved in the near future. Strategies are going to be adopted to increase nonspecific immune system and biosecurity in fish farming. To show the quality traits of gilthead sea breams reared under a prescription of “antibiotic-free” (ABF), two different market sizes (R: about 350 g andM: about 490 g) were analysed at the end of the farming cycle performed in a floating cage plant in the Adriatic sea, in the Gulf of Valona (Albania). Proximate composition and fatty acid profile were determined in April and June 2018. The omega-3 content demonstrated that the ABF samples collected according to the fish size and the harvest month can be defined as “rich in omega-3,” in compliance with the Annex to the Regulation (EC) n. 1924/2006, with a trend to increase in relation to fish growth.
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Beca-Carretero P, Guihéneuf F, Marín-Guirao L, Bernardeau-Esteller J, García-Muñoz R, Stengel DB, Ruiz JM. Effects of an experimental heat wave on fatty acid composition in two Mediterranean seagrass species. MARINE POLLUTION BULLETIN 2018; 134:27-37. [PMID: 29331284 DOI: 10.1016/j.marpolbul.2017.12.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 12/15/2017] [Accepted: 12/22/2017] [Indexed: 06/07/2023]
Abstract
Global warming is emerging as one of the most critical threats to terrestrial and marine species worldwide. This study assessed the effects of simulated warming events in culture on two seagrass species, Posidonia oceanica and Cymodocea nodosa, which play a key role in coastal ecosystems of the Mediterranean Sea. Changes in fatty acids as key metabolic indicators were assessed in specimens from two geographical populations of each species adapted to different in situ temperature regimes. Total fatty acid (TFA) content and composition were compared in C. nodosa and P. oceanica from natural populations and following exposure to heat stress in culture. After heat exposure, individuals of C. nodosa and P. oceanica adapted to colder temperatures in situ accumulated significantly more TFA than controls. For both species, the proportion of polyunsaturated fatty acids (PUFA) decreased, and the percentage of saturated fatty acids (SFA) increased significantly after the heat treatment. These results highlight that populations of both species living at warmest temperatures in situ were more thermo-tolerant and exhibited a greater capacity to cope with heat stress by readjusting their lipid composition faster. Finally, exposure of seagrasses to warmer conditions may induce a decrease in PUFA/SFA ratio which could negatively affect their nutritional value and generate important consequences in the healthy state of next trophic levels.
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Affiliation(s)
- Pedro Beca-Carretero
- Botany and Plant Science, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland.
| | - Freddy Guihéneuf
- Botany and Plant Science, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Lázaro Marín-Guirao
- Seagrass Ecology Group, Oceanography Centre of Murcia, Spanish Oceanography Institute, Spain; Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | | | - Rocío García-Muñoz
- Seagrass Ecology Group, Oceanography Centre of Murcia, Spanish Oceanography Institute, Spain
| | - Dagmar B Stengel
- Botany and Plant Science, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Juan M Ruiz
- Seagrass Ecology Group, Oceanography Centre of Murcia, Spanish Oceanography Institute, Spain
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Variation of lipids and fatty acids composition in the tissues of wild devil stinger ( Inimicus japonicas ) during sexual maturation. AQUACULTURE AND FISHERIES 2018. [DOI: 10.1016/j.aaf.2018.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Bandarra NM, Marçalo A, Cordeiro AR, Pousão-Ferreira P. Sardine (Sardina pilchardus) lipid composition: Does it change after one year in captivity? Food Chem 2018; 244:408-413. [DOI: 10.1016/j.foodchem.2017.09.147] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 07/26/2017] [Accepted: 09/28/2017] [Indexed: 10/18/2022]
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Comparative Study of Reproductive Development in Wild and Captive-Reared Greater Amberjack Seriola dumerili (Risso, 1810). PLoS One 2017; 12:e0169645. [PMID: 28056063 PMCID: PMC5215828 DOI: 10.1371/journal.pone.0169645] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 12/20/2016] [Indexed: 01/06/2023] Open
Abstract
The greater amberjack Seriola dumerili is a large teleost fish with rapid growth and excellent flesh quality, whose domestication represents an ambitious challenge for aquaculture. The occurrence of reproductive dysfunctions in greater amberjack reared in captivity was investigated by comparing reproductive development of wild and captive-reared individuals. Wild and captive-reared breeders were sampled in the Mediterranean Sea during three different phases of the reproductive cycle: early gametogenesis (EARLY, late April-early May), advanced gametogenesis (ADVANCED, late May-early June) and spawning (SPAWNING, late June-July). Fish reproductive state was evaluated using the gonado-somatic index (GSI), histological analysis of the gonads and determination of sex steroid levels in the plasma, and correlated with leptin expression in the liver and gonad biochemical composition. The GSI and sex steroid levels were lower in captive-reared than in wild fish. During the ADVANCED period, when the wild greater amberjack breeders were already in spawning condition, ovaries of captive-reared breeders showed extensive atresia of late vitellogenic oocytes and spermatogenic activity ceased in the testes of half of the examined males. During the SPAWNING period, all captive-reared fish had regressed gonads, while wild breeders still displayed reproductive activity. Liver leptin expression and gonad proximate composition of wild and captive greater amberjack were similar. However, the gonads of captive-reared fish showed different total polar lipid contents, as well as specific lipid classes and fatty acid profiles with respect to wild individuals. This study underlines the need for an improvement in rearing technology for this species, which should include minimum handling during the reproductive season and the formulation of a specific diet to overcome the observed gonadal decrements of phospholipids, DHA (22:6n-3) and ARA (20:4n-6), compared to wild breeders.
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Fernandes T, Fernandes I, Andrade CA, Cordeiro N. Changes in fatty acid biosynthesis in marine microalgae as a response to medium nutrient availability. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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12
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Effect of seasonal variation on lipid and fatty acid profile in muscle tissue of male and female Silurus triostegus. Journal of Food Science and Technology 2016; 53:2913-2922. [PMID: 27765962 DOI: 10.1007/s13197-016-2253-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/09/2016] [Accepted: 05/17/2016] [Indexed: 10/21/2022]
Abstract
Fatty acid (FA) compositions of total lipid, phospholipid (PL) and triacylglycerol (TAG) fractions have been determined in muscle tissues of Silurus triostegus. The distributions of saturated fatty acid (SFA), monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) proportions were found to be different among total lipid, PL and TAG fractions from lipids in muscle tissues of the male and female S. triostegus in all seasons. Triacylglycerol contained a lower proportion of PUFA and a higher proportion of MUFA and SFA than PL while PL contained higher proportion of PUFA than proportion of MUFA and SFA compared to TAG. Triacylglycerol and PL fatty acid compositions in muscle tissues of the male and female fish species were found different. The most abundant fatty acids in the investigated seasons were palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1 n-9), palmitoleic acid (C16:1 n-7) and docosahexaenoic acid (C22:6 n-3). It was shown that the total lipid content and FA compositions in muscle tissues of the male and female S. triostegus were influenced by reproduction period and season.
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Kaçar S, Başhan M. Seasonal Variations in the Fatty Acid Composition of Phospholipid and Triacylglycerol in Gonad and Liver of Mastacembelus simack. J AM OIL CHEM SOC 2015. [DOI: 10.1007/s11746-015-2692-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Fatty Acid Composition and ω3/ω6 Ratios in the Muscle of Wild and Reared Oncorhynchus mykiss. Chem Nat Compd 2015. [DOI: 10.1007/s10600-015-1194-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Rodríguez-Barreto D, Jerez S, Cejas JR, Martin MV, Acosta NG, Bolaños A, Lorenzo A. Ovary and egg fatty acid composition of greater amberjack broodstock (Seriola dumerili) fed different dietary fatty acids profiles. EUR J LIPID SCI TECH 2014. [DOI: 10.1002/ejlt.201300462] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Deiene Rodríguez-Barreto
- Facultad de Biología; Departamento de Biología Animal (U.D.I. Fisiología); Universidad de La Laguna; Santa Cruz de Tenerife Spain
| | - Salvador Jerez
- Centro Oceanográfico de Canarias (I.E.O.); Instituto Español de Oceanografía; Santa Cruz de Tenerife Spain
| | - Juana R. Cejas
- Centro Oceanográfico de Canarias (I.E.O.); Instituto Español de Oceanografía; Santa Cruz de Tenerife Spain
| | - M. Virginia Martin
- Centro Oceanográfico de Canarias (I.E.O.); Instituto Español de Oceanografía; Santa Cruz de Tenerife Spain
| | - Nieves G. Acosta
- Facultad de Biología; Departamento de Biología Animal (U.D.I. Fisiología); Universidad de La Laguna; Santa Cruz de Tenerife Spain
| | - Ana Bolaños
- Facultad de Biología; Departamento de Biología Animal (U.D.I. Fisiología); Universidad de La Laguna; Santa Cruz de Tenerife Spain
| | - Antonio Lorenzo
- Facultad de Biología; Departamento de Biología Animal (U.D.I. Fisiología); Universidad de La Laguna; Santa Cruz de Tenerife Spain
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Ehsani A, Jasour MS, Khodayari M. Differentiation of common marketable-size rainbow trouts (Oncorhynchus mykiss) based on nutritional and dietetic traits: a comparative study. JOURNAL OF APPLIED ANIMAL RESEARCH 2013. [DOI: 10.1080/09712119.2013.783483] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Martín MV, Almansa E, Cejas JR, Bolaños A, Jerez S, Lorenzo A. Effects of a diet lacking HUFA on lipid and fatty acid content of intestine and gills of male gilthead seabream (Sparus aurata L.) broodstock at different stages of the reproductive cycle. FISH PHYSIOLOGY AND BIOCHEMISTRY 2011; 37:935-949. [PMID: 21553061 DOI: 10.1007/s10695-011-9491-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Accepted: 04/22/2011] [Indexed: 05/30/2023]
Abstract
A feeding experiment was carried out to determine the effect of a diet lacking n-3 and n-6 highly unsaturated fatty acids (HUFA) on lipid and fatty acid content in intestine and gills of male gilthead seabream (Sparus aurata L.) broodstock at different stages of the reproductive cycle: November (pre-spermatogenesis), March (spermatogenesis), and June (post-spermatogenesis). For this purpose, gilthead seabream broodstock were fed either a control diet (C) or an n-3 and n-6 HUFA-deficient diet (D). The results showed no changes in fatty acid content of polar lipids of intestine and gills from fish fed diet C at different stages of the reproductive cycle. However, significant changes were observed in the fatty acid content of neutral lipids in intestine but not in gills in this group. Thus, between November and March, saturates and n-3 HUFA decreased while monoenes increased. In June, the contents of these fatty acids had returned to their initial values (November). Moreover, in fish fed diet D, the fatty acid content of neutral lipid changed in both intestine and gills. In intestine NL, a decrease in saturates and n-3 HUFA and an increment in monoenes were observed from November to June. In gills, a decrease was also observed in n-3 HUFA from NL along the cycle. Nevertheless, n-6 HUFA content remained unchanged. These results show both tissue specificity in seasonal mobilization of fatty acids linked to reproductive processes and the influence of dietary fatty acids on body composition.
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Affiliation(s)
- M V Martín
- Instituto Español de Oceanografía, Centro Oceanográfico de Canarias, Santa Cruz de Tenerife, Spain.
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Litvin SY, Guida VG, Weinstein MP. Lipid class dynamics and storage depots in juvenile weakfish Cynoscion regalis and their application to condition assessment. JOURNAL OF FISH BIOLOGY 2011; 78:1294-1310. [PMID: 21539543 DOI: 10.1111/j.1095-8649.2011.02918.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Lipid class dynamics, the pattern of change in the primary form and location of lipid stores and their relationship with standard length (L(S) ), were investigated in collections of young-of-the-year weakfish Cynoscion regalis for the purpose of determining the utility of this analysis as an indication of condition. The separation of total lipids into individual classes and the analysis of potential storage depots revealed the general patterns of lipid class dynamics and energy storage in C. regalis during their period of juvenile estuarine residency. Phospholipid and cholesterol exhibited moderate but variable (8·1-40·0 and 1·3-21·5 mg g(-1) , respectively) concentrations across the entire juvenile period and were the predominant lipid classes in juveniles <100 mm L(S) , while wax ester concentrations were low (c. 1 mg g(-1) ) and exhibited the least amount of variability among lipid classes. Triacylglycerols (TAG) and free fatty acids (FFA) exhibited similar dynamics, with relatively low concentrations (<15 mg g(-1) ) in individuals ≤100 mm L(S) . In larger juveniles both TAG and FFA concentrations generally increased rapidly, though there was considerable variability in both measures (0·0-199·7 and 0·0-49·7 mg g(-1) , respectively). Increasing levels of lipids, primarily in the form of TAG, with size indicated an accumulation of energy reserves with growth, thus providing an indication of individual condition for larger juveniles. Separate analysis of liver, viscera and the remaining carcass indicated that liver and viscera did not represent a significant depot of TAG reserves. Analysis of samples derived from whole juvenile C. regalis thus provided an accurate estimate of energy reserves.
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Affiliation(s)
- S Y Litvin
- Institute of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road New Brunswick, NJ 08901, USA.
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Tufan B, Koral S, Köse S. Changes during fishing season in the fat content and fatty acid profile of edible muscle, liver and gonads of anchovy (Engraulis encrasicolus) caught in the Turkish Black Sea. Int J Food Sci Technol 2011. [DOI: 10.1111/j.1365-2621.2011.02562.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Makri A, Bellou S, Birkou M, Papatrehas K, Dolapsakis NP, Bokas D, Papanikolaou S, Aggelis G. Lipid synthesized by micro-algae grown in laboratory- and industrial-scale bioreactors. Eng Life Sci 2011. [DOI: 10.1002/elsc.201000086] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Proximate and fatty acids composition of the muscles and viscera of Asian catfish (Pangasius bocourti). Food Chem 2010. [DOI: 10.1016/j.foodchem.2010.02.065] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chaijan M, Jongjareonrak A, Phatcharat S, Benjakul S, Rawdkuen S. Chemical compositions and characteristics of farm raised giant catfish (Pangasianodon gigas) muscle. Lebensm Wiss Technol 2010. [DOI: 10.1016/j.lwt.2009.09.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Benedito-Palos L, Navarro JC, Kaushik S, Pérez-Sánchez J. Tissue-specific robustness of fatty acid signatures in cultured gilthead sea bream (Sparus aurata L.) fed practical diets with a combined high replacement of fish meal and fish oil. J Anim Sci 2010; 88:1759-70. [PMID: 20081079 DOI: 10.2527/jas.2009-2564] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present study aimed to determine the tissue-specific robustness of fatty acid (FA) signatures of gilthead sea bream (Sparus aurata L.) by analyzing the changes in lipid class and FA composition of skeletal muscle, brain, liver, and mesenteric adipose tissue. Triplicate groups of fish were fed to visual satiety over a 14-mo production cycle with 2 practical plant protein-based diets formulated with either fish oil or a blend of vegetable oils (66% of fish oil replacement) to contain 53% CP and 21% crude fat on a DM basis. Growth rates (P = 0.22) and tissue lipid class composition were not altered by the dietary treatment (P = 0.34 and 0.52 for neutral lipids and phospholipids, respectively). The FA signatures of neutral lipids reflected the composition of the diet, although the output of principal components analysis revealed a divergent FA profile for liver compared with skeletal muscle, brain, and mesenteric adipose tissue. Because the theoretical EFA needs were met by the 2 diets, the FA composition of phospholipids remained almost unaltered in all tissues. Interestingly, however, the brain showed the greatest robustness and regulatory capacity to preserve the phenotype of fish fed fish oil-based diets. The FA signatures of total lipids are a combinatory result of neutral and polar lipids, and the most relevant fat storage tissues (mesenteric adipose tissue and skeletal muscle) were more easily influenced by dietary FA composition. The present study provides new insights into fish tissue FA composition and reinforces the use of FA signatures as useful criteria in determining whether EFA requirements for a wide range of physiological processes, including those of neural tissues, can be met with practical fish feeds.
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Affiliation(s)
- L Benedito-Palos
- Nutrition and Animal Health Research Unit, Institute of Aquaculture Torre la Sal, Consejo Superior de Investigaciones Científicas, 12595 Castellón, Spain
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Xu Y, Ding Z, Zhang H, Liu L, Wang S, Gorge J. Different ratios of docosahexaenoic and eicosapentaenoic acids do not alter growth, nucleic acid and fatty acids of juvenile cobia (Rachycentron canadum). Lipids 2009; 44:1091-104. [PMID: 19760445 DOI: 10.1007/s11745-009-3340-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Accepted: 08/26/2009] [Indexed: 11/28/2022]
Abstract
An experiment was performed to study the effect of different ratios of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) on the growth, nucleic acid and fatty acids of cobia (Rachycentron canadum) juveniles. The juveniles were fed for 8 weeks using seven treatment diets (D-1-D-7) with the same amount of DHA and EPA (1.50 +/- 0.1% of dried diet), but varying ratios of DHA to EPA (0.90, 1.10, 1.30, 1.50, 1.70, 1.90, 2.10, respectively) and a control diet (D-0, DHA + EPA = 0.8% of dried diet, DHA/EPA = 1.30). At the end of the experiment, the mean body weight (BW) of juveniles fed D-0-D-7 increased significantly (from 6.86 +/- 1.64 in the week 0 to 58.52 +/- 16.45 g at the end of week 8, P < 0.05). The mean RNA amount and RNA/DNA ratio in the muscle (from 39.62 +/- 1.30 microg mg(-1) and 2.29 +/- 0.11 in the week 0 to 272.55 +/- 10.70 microg mg(-1) and 14.54 +/- 1.75 at the end of week 8, respectively) and the mean weight in the liver (from 117.70 +/- 11.15 microg mg(-1) and 3.14 +/- 0.25 in the week 0 to 793.07 +/- 13.38 microg mg(-1) and 13.16 +/- 0.76 at the end of week 8, respectively) of cobia juveniles fed D-0-D-7 were significantly higher at the end of 8-week experiment than initially (P < 0.05). The RNA/DNA ratio in the muscle and liver of cobia juveniles increased with their growth and appeared an obvious positive relationship, especially in the muscle, based on regression analysis. The mean lipid content increased significantly in the liver (from 29.82 +/- 0.99 to 37.47 +/- 3.25% totally) and muscle (from 6.74 +/- 0.25 to 10.63 +/- 0.23% totally) of cobia juveniles (P < 0.05). However, no significant difference was found on the lipid contents of juveniles fed different diets for 8 weeks (P > 0.05). In the muscle and liver of juveniles, EPA decreased with its reduction in the diet; DHA, DHA/EPA ratio and poly unsaturated fatty acids (PUFAs) generally increased with their increment in the diet. The conclusion was drawn that the growth, nucleic acid and fatty acids of cobia juveniles were not significantly affected by different DHA/EPA ratios in our experiments.
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Affiliation(s)
- Youqing Xu
- Institute for Fisheries Sciences, Guangxi University, 100 University Road, 530004 Nanning, Guangxi, China
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Akpinar MA, Görgün S, Akpinar AE. A comparative analysis of the fatty acid profiles in the liver and muscles of male and female Salmo trutta macrostigma. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.05.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Cequier-Sánchez E, Rodríguez C, Ravelo AG, Zárate R. Dichloromethane as a solvent for lipid extraction and assessment of lipid classes and fatty acids from samples of different natures. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:4297-303. [PMID: 18505264 DOI: 10.1021/jf073471e] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The usefulness of the solvent mixture dichloromethane/methanol for lipid extraction and the determination of lipid classes and fatty acids in samples of different natures was conducted. Two different extraction methods were compared, one containing chloroform/methanol, another containing dichloromethane/methanol. Total lipid extraction showed some minor differences but no variation in the lipid classes. Regarding the fatty acid profile, in Echium virescens seeds, 17 major fatty acids could be identified and quantified, and all were equally extracted when either solvent system was employed. In Echium acanthocarpum hairy roots, 17 major fatty acids were quantified, showing some statistical differences for one cell line in favor of chloroform. The data obtained from the liquid nutrient medium were also comparable. The cod roe sample showed 31 major fatty acids, showing no statistical differences between the two solvent systems. Contrarily, the CH 2Cl 2 method was able to extract 31 main fatty acids found in European seabass dorsal muscle more efficiently than the CHCl 3 method. The results indicate that, for lipid extraction and fatty acid assessment, dichloromethane/methanol can readily replace the commonly employed chloroform/methanol, thus avoiding the major health, security, and regulatory problems associated with the use of chloroform.
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Affiliation(s)
- Elena Cequier-Sánchez
- Instituto Universitario de Bio-Orgánica A. G. González, University of La Laguna, Avenida Francisco Sánchez 2, Tenerife, Spain
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Semeniuk CAD, Speers-Roesch B, Rothley KD. Using fatty-acid profile analysis as an ecologic indicator in the management of tourist impacts on marine wildlife: a case of stingray-feeding in the Caribbean. ENVIRONMENTAL MANAGEMENT 2007; 40:665-77. [PMID: 17638047 DOI: 10.1007/s00267-006-0321-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Accepted: 04/23/2007] [Indexed: 05/16/2023]
Abstract
Feeding marine wildlife as a tourism experience has become a popular means by which to attract both people and wildlife, although management efforts are still in their infancy. "Stingray City Sandbar" in the Cayman Islands, where visitors can hand feed free-ranging Southern Stingrays (Dasyatis americana), is a world-famous attraction currently undergoing visitor and wildlife management. One plan is to decrease the amount of nonnatural food provided by tourists with the intention of decreasing stingray habituation to the artificial food source and promoting stingray health. However, the effectiveness of this action is uncertain given that neither the extent of squid composition in the stingray diet nor the degree of nutrient similarity between the fed and natural diets is unknown. We used fatty acid (FA) profile analysis to address these questions by assessing the serum nonesterified FA composition of fed and unfed stingrays around the island and compared them with FA profiles of (1) the provisioned food source (squid) and (2) other warm- and cold-water elasmobranchs (sharks and rays). Our results indicated that fed stingrays were distinct. The FA profiles of the fed stingray population were expressly different from those of the unfed populations and showed a remarkable similarity to the FA composition of squid, suggesting that squid is the main food source. The tropical fed stingrays also exhibited essential FA ratios, specific to both species and habitat, comparable with those of elasmobranchs and squid from cold-water environs, implying that the provisioned food does not provide a similar nutritional lipid composition to that eaten in the wild. Our results suggest that FA profiles are a valuable indicator for the management and monitoring of fed Southern Stingrays because they can be used to assess differences in diet composition and provide an index of nutritional similarity. Our findings are currently being used by Caymanian stakeholders in designing practical management actions for their wildlife attraction.
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Affiliation(s)
- Christina A D Semeniuk
- School of Resource and Environmental Management, Simon Fraser University, 8888 University Drive, V5A 1S6, Burnaby, British Columbia, Canada.
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Effect of maternal fat reserves on the fatty acid composition of sardine (Sardina pilchardus) oocytes. Comp Biochem Physiol B Biochem Mol Biol 2007; 148:398-409. [PMID: 17720577 DOI: 10.1016/j.cbpb.2007.07.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2007] [Revised: 07/20/2007] [Accepted: 07/24/2007] [Indexed: 11/28/2022]
Abstract
We compared the fatty acid (FA) composition of the muscle and gonads of female Iberian sardines with hydrated oocytes collected during the 2002/03 spawning season off southern Portugal (November and February) and off western Portugal (February). Sardine condition and total FA concentration in the muscle decreased between the two sampling dates, while the gonadosomatic index was similar between samples. Total monounsaturated FA concentrations in sardine gonads were different for the three samples while saturated and polyunsaturated FA concentrations were similar. Significant linear relations were found between FA concentrations in female muscle and oocytes, including eicosapentaenoic acid (EPA; 20:5n-3) and arachidonic acid (AA; 20:4n-6), both being essential for normal larval development. The concentration of docosahexaenoic acid (DHA; 22:6n-3) in oocytes was independent on muscle concentration, probably resulting from its selective transfer to the oocytes. The EPA/DHA ratio was highly conserved in sardine tissues, while DHA/AA and EPA/AA ratios varied significantly between samples. These results indicate that the FA content of eggs produced by sardines varies throughout the spawning season, egg FA concentrations decreasing as females lose condition, and FA composition also shows spatial variability. Both types of variability may have a significant impact on egg quality, particularly on the amount of reserves available to larvae affecting their resistance to starvation, and the appropriate FA composition required for normal growth.
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Seasonal Changes in Intrinsic Characteristics of Pacific Sardine (Sardinops sagax). JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2007. [DOI: 10.1300/j030v16n01_05] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Liver and muscle fatty acid composition of mature and immature rainbow trout (Oncorhynchus mykiss) fed two different diets. Biologia (Bratisl) 2007. [DOI: 10.2478/s11756-007-0058-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pérez MJ, Rodríguez C, Cejas JR, Martín MV, Jerez S, Lorenzo A. Lipid and fatty acid content in wild white seabream (Diplodus sargus) broodstock at different stages of the reproductive cycle. Comp Biochem Physiol B Biochem Mol Biol 2007; 146:187-96. [PMID: 17157047 DOI: 10.1016/j.cbpb.2006.10.097] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Revised: 10/11/2006] [Accepted: 10/16/2006] [Indexed: 11/16/2022]
Abstract
The lipid and fatty acid content of the gonads, liver and muscle of wild white seabream males and females was studied at different stages of the reproductive cycle. Samples were taken from mature white seabream at pre-spawning (November), mid-spawning (March) and post-spawning (June) stages. The results showed that lipid accumulates in gonads and muscle from November to March. The gonadosomatic index (GSI) was also increased during this period. Male gonads showed a greater increase in polar lipid (PL) than neutral (NL), while female gonads displayed the reverse. The increase in both neutral and polar lipid was higher in the muscle of males than in females. In the same period, male livers showed no changes either in lipid content or the hepatosomatic index (HSI), while female livers registered an increase in both lipid content and HSI. Between March and June, in both males and females, total, neutral and polar lipid decreased sharply in the gonads and muscle. Muscular lipid content reduction was more pronounced in males than females. On the other hand, the lipid content of the liver in males and females remained relatively constant. In general terms, the amounts of major fatty acids (16:0, 18:1n-9, 20:5n-3 and 22:6n-3) in gonadal and muscular polar and neutral lipid in both males and females increased from November to March and declined thereafter. Variations of the liver fatty acid content were less extreme. In the period from mid-spawning to post-spawning, the presence of 20:4n-6 in polar and neutral lipid increased to a notable extent in all organs studied.
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Affiliation(s)
- M J Pérez
- Dpto de Biología Animal (UDI Fisiología), Fac de Biología, Univ de La Laguna, 38206 S/C de Tenerife, Spain
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Senso L, Suárez M, Ruiz-Cara T, García-Gallego M. On the possible effects of harvesting season and chilled storage on the fatty acid profile of the fillet of farmed gilthead sea bream (Sparus aurata). Food Chem 2007. [DOI: 10.1016/j.foodchem.2006.01.036] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nakamura YN, Ando M, Seoka M, Kawasaki KI, Tsukamasa Y. Changes of proximate and fatty acid compositions of the dorsal and ventral ordinary muscles of the full-cycle cultured Pacific bluefin tuna Thunnus orientalis with the growth. Food Chem 2007. [DOI: 10.1016/j.foodchem.2006.07.064] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sushchik NN, Gladyshev MI, Kalachova GS, Makhutova ON, Ageev AV. Comparison of seasonal dynamics of the essential PUFA contents in benthic invertebrates and grayling Thymallus arcticus in the Yenisei river. Comp Biochem Physiol B Biochem Mol Biol 2006; 145:278-87. [PMID: 16996285 DOI: 10.1016/j.cbpb.2006.05.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2005] [Revised: 03/24/2006] [Accepted: 05/16/2006] [Indexed: 11/26/2022]
Abstract
Seasonal dynamics of contents of essential polyunsaturated fatty acids (PUFA) in dominant groups of benthic invertebrates: gammarids (Gammaridae, Amphipoda), oligochaetes (Oligochaeta), chironomid larvae (Chironomidae, Diptera) and caddisfly larvae (Trichoptera), and dominant benthivorous fish, Siberian grayling Thymallus arcticus, have been studied in ecosystem of the large Siberian river. During the year of the study most benthic invertebrate taxa showed significant variations in the contents of both C-18 and long chain C-20-22 PUFAs. In contrast, the fish, which consumed the zoobenthos, had no significant seasonal variations in long chain PUFAs' contents. Thereby, the fish, as organisms of relatively higher evolution level than invertebrates, was supposed to have more strict metabolic control of long chain PUFAs' contents. Evidence was obtained that the studied fish species, grayling, may be capable to convert dietary EPA into DHA.
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Affiliation(s)
- N N Sushchik
- Institute of Biophysics of Siberian Branch of Russian Academy of Science, Akademgorodok, Krasnoyarsk 660036, Russia.
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