scholarly journals Crustacean amphipods from marsh ponds: a nutritious feed resource with potential for application in Integrated Multi-Trophic Aquaculture

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4194 ◽  
Author(s):  
Pablo Jiménez-Prada ◽  
Ismael Hachero-Cruzado ◽  
Inmaculada Giráldez ◽  
Catalina Fernández-Diaz ◽  
César Vilas ◽  
...  
Keyword(s):  
Salt Marshes ◽  
Large Body ◽  
Food Sources ◽  
Coastal Protection ◽  
Amphipod Species ◽  
Omega 3 ◽  
High Concentration ◽  
Economic Resource ◽  
Sustainable Food ◽  
Alternative Feed

Coastal protection, nutrient cycling, erosion control, water purification, and carbon sequestration are ecosystem services provided by salt marshes. Additionally, salt ponds offer coastal breeding and a nursery habitat for fishes and they provide abundant invertebrates, such as amphipods, which are potentially useful as a resource in aquaculture. Fishmeal and fish oil are necessary food resources to support aquaculture of carnivorous species due to their omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA). Currently, aquaculture depends on limited fisheries and feed with elevated n-3 LC-PUFA levels, but the development of more sustainable food sources is necessary. Amphipods appear to be a potential high quality alternative feed resource for aquaculture. Hence, a nutritional study was carried out for several main amphipod species—Microdeutopus gryllotalpa,Monocorophium acherusicum,Gammarus insensibilis,Melita palmataandCymadusa filosa—in terrestrial ponds in the South of Spain. These species showed high protein content (up to 40%), high n-3 PUFA and phospholipid levels, and high levels of phophatidylcholine (PC), phosphatidylethanolamine (PE) and triacylglycerols (TAG), the latter being significantly high forM. acherusicum.M. gryllotalpaandM. acherusicumshowed the highest proportion of lipids (19.15% and 18.35%, respectively). Isoleucine, glycine and alanine were the dominant amino acids in all species. In addition, amphipods collected from ponds showed low levels of heavy metals. Furthermore, the biochemical profiles of the five species of amphipods have been compared with other studied alternative prey. Therefore, pond amphipods are good candidates to be used as feed, and are proposed as a new sustainable economic resource to be used in aquaculture.G. insensibilismay be the best for intensive culture as an alternative feed resource because it shows: (1) adequate n-3 PUFA and PL composition; (2) high levels of glycine, alanine, tyrosine, isoleucine and lysine; (3) high natural densities; (4) large body size (≥1 cm), and (5) high concentration of calcium. Moreover, a combined culture of amphipods and fishes in these marsh ponds seems a promising and environmentally sustainable way to develop Integrate Multi-Trophic Aquaculture (IMTA) in these ecosystems.

scholarly journals Crustacean amphipods from marsh ponds: a nutritious feed resource with potential application in Integrated Multi-Trophic Aquaculture.

2017 ◽  
Author(s):  
Pablo Jiménez-Prada ◽  
Ismael Hachero-Cruzado ◽  
Inmaculada Giráldez ◽  
Catalina Fernández-Diaz ◽  
César Vilas ◽  
...  
Keyword(s):  
Salt Marshes ◽  
Large Body ◽  
Food Sources ◽  
Coastal Protection ◽  
Omega 3 ◽  
High Concentration ◽  
Economic Resource ◽  
Sustainable Food ◽  
Environmentally Sustainable ◽  
Alternative Feed

Coastal protection, nutrient cycling, erosion control, water purification, and carbon sequestration are ecosystem services provided by salt marshes. Additionally, the salt ponds offers coastal breeding and nursery habitat to fishes and invertebrates providing abundant amphipods potentially useful as a resource in aquaculture. Fishmeal and fish oil are necessary food resources to support aquaculture of carnivorous species due to their omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA). Their dependence on limited fisheries constrains growth of aquaculture and the need for n-3 LC-PUFA recommends the development of more sustainable food sources. Due to their extensive feeding on detritus and primary producers, amphipods appear as potential and high quality alternative feed resource for aquaculture. Hence, a nutritional study was carried out for main amphipods species -Microdeutopus gryllotalpa, Monocorophium acherusicum, Gammarus insensibilis, Melita palmata and Cymadusa filosa- at South Spain aquaculture terrestrial ponds . These species showed a high protein content (up to 40%), high n-3 PUFA and phospholipid levels, and high levels of phophatidylcholine (PC), phosphatidylethanolamine (PE) and triacylglycerols(TAG), the latter significantly high for M. acherusicum . M. gryllotalpa and M. acherusicum showed the highest proportion of lipids (19.15% and 18.35%, respectively). Isoleucine, glycine and alanine were the dominant amino acids in all species. In addition, amphipods collected from ponds showed low levels of heavy metals. Furthermore, the biochemical profile of the five amphipods have been compared with other studied alternatives preys. Therefore, amphipods of ponds are good candidates to be used as feed, and are proposed as a new sustainable economic resource to use in aquaculture. G. insensibilis may be the best to be intensively cultured as an alternative feed resource because shows: 1) adequate PUFAS n-3 and PL composition; 2) high levels of glycine, alanine, tyrosine, isoleucine and lysine; 3) high natural densities; 4) large body size ( ≥ 1 cm) and 5) high concentration of Calcium. Moreover, a combined culture of amphipods and fishes in these marsh ponds seems a promising and environmentally sustainable way to develop Integrate Multi-Trophic Aquaculture (IMTA) in these ecosystems.

scholarly journals Crustacean amphipods from marsh ponds: a nutritious feed resource with potential application in Integrated Multi-Trophic Aquaculture.

2017 ◽  
Author(s):  
Pablo Jiménez-Prada ◽  
Ismael Hachero-Cruzado ◽  
Inmaculada Giráldez ◽  
Catalina Fernández-Diaz ◽  
César Vilas ◽  
...  
Keyword(s):  
Salt Marshes ◽  
Large Body ◽  
Food Sources ◽  
Coastal Protection ◽  
Omega 3 ◽  
High Concentration ◽  
Economic Resource ◽  
Sustainable Food ◽  
Environmentally Sustainable ◽  
Alternative Feed

Coastal protection, nutrient cycling, erosion control, water purification, and carbon sequestration are ecosystem services provided by salt marshes. Additionally, the salt ponds offers coastal breeding and nursery habitat to fishes and invertebrates providing abundant amphipods potentially useful as a resource in aquaculture. Fishmeal and fish oil are necessary food resources to support aquaculture of carnivorous species due to their omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA). Their dependence on limited fisheries constrains growth of aquaculture and the need for n-3 LC-PUFA recommends the development of more sustainable food sources. Due to their extensive feeding on detritus and primary producers, amphipods appear as potential and high quality alternative feed resource for aquaculture. Hence, a nutritional study was carried out for main amphipods species -Microdeutopus gryllotalpa, Monocorophium acherusicum, Gammarus insensibilis, Melita palmata and Cymadusa filosa- at South Spain aquaculture terrestrial ponds . These species showed a high protein content (up to 40%), high n-3 PUFA and phospholipid levels, and high levels of phophatidylcholine (PC), phosphatidylethanolamine (PE) and triacylglycerols(TAG), the latter significantly high for M. acherusicum . M. gryllotalpa and M. acherusicum showed the highest proportion of lipids (19.15% and 18.35%, respectively). Isoleucine, glycine and alanine were the dominant amino acids in all species. In addition, amphipods collected from ponds showed low levels of heavy metals. Furthermore, the biochemical profile of the five amphipods have been compared with other studied alternatives preys. Therefore, amphipods of ponds are good candidates to be used as feed, and are proposed as a new sustainable economic resource to use in aquaculture. G. insensibilis may be the best to be intensively cultured as an alternative feed resource because shows: 1) adequate PUFAS n-3 and PL composition; 2) high levels of glycine, alanine, tyrosine, isoleucine and lysine; 3) high natural densities; 4) large body size ( ≥ 1 cm) and 5) high concentration of Calcium. Moreover, a combined culture of amphipods and fishes in these marsh ponds seems a promising and environmentally sustainable way to develop Integrate Multi-Trophic Aquaculture (IMTA) in these ecosystems.

scholarly journals Seafood Consumption and Its Contribution to Nutrients Intake among Canadians in 2004 and 2015

Nutrients ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 77
Author(s):  
Xue Feng Hu ◽  
Hing Man Chan
Keyword(s):  
Fatty Acids ◽  
Vitamin D ◽  
Consumption Rate ◽  
Saturated Fatty Acids ◽  
Age Groups ◽  
Canadian Community Health Survey ◽  
Portion Size ◽  
Food Sources ◽  
Seafood Consumption ◽  
Omega 3

Fish and seafood are excellent sources of nutrients such as omega-3 fatty acids, Vitamin D, and selenium. The aims of this study were to examine the pattern of seafood consumption among Canadians and determine their contribution to intakes of energy and nutrients. Day-1 24-h dietary recalls data collected from a national survey, the Canadian Community Health Survey—Nutrition in 2004 and 2015, were used to estimate food and nutrient intakes among Canadians. Seafood was classified according to the Bureau of Nutritional Sciences food list. Descriptive statistics were used to calculate the consumption rate and the average consumption amount of seafood by different age groups and sociodemographic characteristics. Population ratios were used to assess the contribution of seafood to the total intake of energy and nutrients. The overall consumption rate of seafood was around 17%, and the rate was similar between males and females, and slightly higher in 2015 (17.71%) compared to 2004 (16.38%). The average portion size is approximately 100 g, which translates into a ≈36 kg annual intake among the consumers and ≈6.2 kg per capita consumption. Adults (especially 30 years and above), Asians, individuals who were married, and with post-secondary education were more likely to consume seafood. Salmon, tuna, shrimp, cod, and crab were the most frequently consumed seafood in Canada, the consumption rate of which all increased from 2004 to 2015. Seafood provided up to 75% of n-3 PUFAs, 18% of Vitamin D, 19% Vitamin B12, 6% of niacin, and 4% of Vitamin B6 from all food sources. Seafood consumers had a healthier diet, as seafood consumption was related to a higher intake of key nutrients and a lower intake of total sugar and saturated fatty acids. Therefore, fish consumption should be promoted among Canadians.

scholarly journals Microalgae as Sustainable Bio-Factories of Healthy Lipids: Evaluating Fatty Acid Content and Antioxidant Activity

Marine Drugs ◽  
2021 ◽  
Vol 19 (7) ◽  
pp. 357
Author(s):  
Tiago A. Conde ◽  
Bruna F. Neves ◽  
Daniela Couto ◽  
Tânia Melo ◽  
Bruno Neves ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Fatty Acid Content ◽  
Scenedesmus Obliquus ◽  
Food Sources ◽  
Gas Chromatography Mass Spectrometry ◽  
Nannochloropsis Oceanica ◽  
Omega 3 ◽  
Bioactive Lipids ◽  
Food Ingredients

The demand for sustainable and environmentally friendly food sources and food ingredients is increasing, and microalgae are promoted as a sustainable source of essential and bioactive lipids, with high levels of omega-3 fatty acids (ω-3 FA), comparable to those of fish. However, most FA screening studies on algae are scattered or use different methodologies, preventing a true comparison of its content between microalgae. In this work, we used gas-chromatography mass-spectrometry (GC-MS) to characterize the FA profile of seven different commercial microalgae with biotechnological applications (Chlorella vulgaris, Chlorococcum amblystomatis, Scenedesmus obliquus, Tetraselmis chui, Phaeodactylum tricornutum, Spirulina sp., and Nannochloropsis oceanica). Screening for antioxidant activity was also performed to understand the relationship between FA profile and bioactivity. Microalgae exhibited specific FA profiles with a different composition, namely in the ω-3 FA profile, but with species of the same phylum showing similar tendencies. The different lipid extracts showed similar antioxidant activities, but with a low activity of the extracts of Nannochloropsis oceanica. Overall, this study provides a direct comparison of FA profiles between microalgae species, supporting the role of these species as alternative, sustainable, and healthy sources of essential lipids.

scholarly journals Future Food Sustainability Can Be Traced Back into Local People’s Socio-Cultural Roots in Uttarakhand Himalaya, India

2021 ◽  
Vol 13 (13) ◽  
pp. 7060
Author(s):  
Joyeeta Singh Chakraborty ◽  
Bikash Ranjan Parida ◽  
Nilendu Singh
Keyword(s):  
Local Community ◽  
Food System ◽  
Food Sources ◽  
Structured Interviews ◽  
Sustainable Food ◽  
Social Challenges ◽  
Local Food System ◽  
Quality Choice ◽  
Socio Demographic Factors ◽  
Uttarakhand Himalaya

Sustainable food system ensures adequate and safe food supply in an eco-friendly manner. We assessed food sustainability perception and practices of local community through structured interviews in sub-alpine settlements of Uttarakhand Himalaya. Major perceived challenges towards food sustainability were identified using Rank-Based Quotient analysis. Association with various socio-demographic factors (e.g., age, gender, education, socio-economy, and socio-culture) was tested. An overall neutral perception (mean score 2.9) and moderately sustainable practices (mean score 3.1) were observed. Respondents with higher socio-cultural score showed more sustainable food sourcing practices and more positive social and economic sustainability perception, as well as higher participatory willingness. Female respondents were more dependent on sustainable food sources than the males. Education level influenced food quality choice. People identified higher food production cost as major economic constraint; while small landholdings and labor migration were main social challenges. Land and water management issues and climate uncertainty were the major environmental constraints. Socio-cultural exposure played significant role in ranking these sustainability constraints. We encourage direct involvement of socio-culturally active people and conducting extensive outreach programs for future sustainable local food system in vulnerable Himalayan valleys.

Exploring persuasive sales techniques to improve customer acceptance of sustainable but unfamiliar menu in restaurants

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Chris He Cai ◽  
Anni Ding ◽  
Tiffany Shin Legendre
Keyword(s):  
Food Waste ◽  
Information Sources ◽  
Social Stigma ◽  
Food Sources ◽  
Food Aversion ◽  
Sustainable Food ◽  
Content Type ◽  
Customer Acceptance ◽  
Unfamiliar Food ◽  
Sales Strategies

Purpose Although restauranteurs hope to incorporate offal or variety meat, in the menu as an attempt to reduce food waste, adopting these ingredients is still challenging due to customer rejections. This study aims to propose potential persuasive sales strategies based on customers’ different information sources to increase organ meat-based menu sales for restaurateurs. Design/methodology/approach In this research, a qualitative study was conducted to identify critical factors that show persuasive effects from external, interpersonal and experiential information sources. A total of 20 in-depth expert interviews with professional chefs and restauranteurs were conducted and key persuasive service tactics were analyzed. Findings From their experience of persuading customers to try unusual foods, insights about how to alleviate unfamiliar food aversion were obtained. The findings of this study showed that different persuasive sales tactics can be implemented to decrease customers’ aversion to offal and offcuts on menus. Research limitations/implications The context of offal is meaningful theoretically because it sheds light on the literature gaps related to persuasive sales strategies for food products with a negative social stigma. Practically, the findings of this study explicitly address that offal usage in restaurants can not only encourage the culinary uniqueness of a restaurant but also contribute to the reduction of food waste by foodservice operations. Originality/value This research answers the calls for more research on sustainable food sources in hospitality literature by proposing offal as a potential alternative protein source. The findings of this study can further be used to improve customer acceptance of other sustainable but unfamiliar food items.

scholarly journals Quantitative Analysis of Nutrients and Biochemical Evaluation in Pomfret Fish (Pampus argenteus) During Frozen Storage

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Utkalendu suvendusekhar Samantaray ◽  
Swagatika Tripathy
Keyword(s):  
Oxidative Stress ◽  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Frozen Storage ◽  
Storage Condition ◽  
Essential Amino Acids ◽  
Omega 3 ◽  
High Concentration ◽  
Balanced Diet ◽  
Pampus Argenteus

Marine fish are well-known for being a high-quality protein source having high concentration of essential amino acids. It has high concentration of mono unsaturated and poly unsaturated fatty acids, which may aid in the optimization of lipid profiles and the reduction of the risk of coronary heart disease (CHD). The goal of this study was to estimate the nutritional and biochemical status of raw sea fish Pampus argenteus after 30 days of frozen storage at -200C with 15-day intervals. Nutrient study showed a decrease in protein and lipid content. The changes of hydrogen peroxide and oxidized lipid products were estimated in the muscle tissue during fresh and storage condition. Results indicate that during storage the oxidative stress increased. An antioxidant enzyme (superoxide dismutase, smutase, catalase, glutathione peroxidase) measurement was determined. The increased amount of oxidative stress during fish storage is shown by the differential activity of antioxidant enzymes. The amount of protein in fish varies slightly between species and even within species. Fish is high in protein, vitamins, minerals, and omega-3 fatty acids, which are essential for brain development (Spencer et al., 1971; Jacylin et al., 2010). A well-balanced diet consists variety of fish that can help in children's growth and development as well as their heart health (Jinadasa, 2014).

scholarly journals NATURE-BASED COASTAL PROTECTION: WAVE DAMPING BY FLEXIBLE SALT MARSH VEGETATION

2020 ◽  
pp. 9
Author(s):  
Thomas J van Veelen ◽  
Harshinie Karunarathna ◽  
William G Bennett ◽  
Tom P Fairchild ◽  
Dominic E Reeve
Keyword(s):  
Salt Marsh ◽  
Salt Marshes ◽  
Large Scale ◽  
Coastal Vegetation ◽  
Coastal Protection ◽  
Coastal Zones ◽  
Wave Damping ◽  
Marsh Vegetation ◽  
Efficient Manner ◽  
Wave Energy Dissipation

The ability of coastal vegetation to attenuate waves has been well established (Moller et al., 2014). Salt marshes are vegetated coastal wetlands that can act as nature- based coastal defenses. They exhibit a range of plant species, which have been shown to differ in the amount of wave damping they provide (Mullarney & Henderson, 2018). Recent studies have shown that plant flexibility is a key parameter that controls wave energy dissipation (Paul et al., 2016). Yet, no model exists that includes plant flexibility in computationally efficient manner for large-scale coastal zones. Therefore, we have developed a new model for flexible vegetation based on the key mechanisms in the wave-vegetation interaction and applied it to an estuary with diverse salt marsh vegetation.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/AjnFx3aFSzs

Protecting California’s Coast

2019 ◽  
pp. 84-114
Author(s):  
David Vogel
Keyword(s):  
Twentieth Century ◽  
San Francisco ◽  
Public Support ◽  
Coastal Areas ◽  
Coastal Protection ◽  
Valuable Resource ◽  
Aesthetic Value ◽  
Economic Resource ◽  
Explanatory Framework ◽  
Business Support

This chapter begins by exploring the conflicts over Southern California's beaches and coastal areas and then turns to efforts to protect the San Francisco Bay and the entire Pacific coast. In addition to its aesthetic value and opportunities for recreation, the coast is a major economic resource. It enhances the value of property located on or near it, and the coastal area also contains substantial deposits of oil. Precisely because the coast is a scarce and valuable resource with so many competing uses, protecting it, like the coastal redwoods, has been highly contentious. On one important dimension, the dynamics of two of the important cases described in this chapter depart from the book's explanatory framework. The campaigns to establish the Bay Conservation and Development Commission, the world's first coastal protection agency, as well as the more sweeping California Coastal Commission, received no business support. In both cases, the interests of business were not divided. Rather, their creation was made possible by extensive citizen mobilization, an outcome that reveals the important role played by public support for environmental protection in California beginning in the middle of the twentieth century.

scholarly journals Using Multispectral Drone Imagery for Spatially Explicit Modeling of Wave Attenuation through a Salt Marsh Meadow

Drones ◽  
2020 ◽  
Vol 4 (2) ◽  
pp. 25
Author(s):  
Antoine Mury ◽  
Antoine Collin ◽  
Thomas Houet ◽  
Emilien Alvarez-Vanhard ◽  
Dorothée James
Keyword(s):  
Salt Marsh ◽  
Salt Marshes ◽  
Crop Production ◽  
Vegetation Index ◽  
Near Infrared ◽  
Wave Attenuation ◽  
Coefficient Of Determination ◽  
Coastal Protection ◽  
Surface Model ◽  
Red Edge

Offering remarkable biodiversity, coastal salt marshes also provide a wide variety of ecosystem services: cultural services (leisure, tourist amenities), supply services (crop production, pastoralism) and regulation services including carbon sequestration and natural protection against coastal erosion and inundation. The consideration of this coastal protection ecosystem service takes part in a renewed vision of coastal risk management and especially marine flooding, with an emerging focus on “nature-based solutions.” Through this work, using remote-sensing methods, we propose a novel drone-based spatial modeling methodology of the salt marsh hydrodynamic attenuation at very high spatial resolution (VHSR). This indirect modeling is based on in situ measurements of significant wave heights (Hm0) that constitute the ground truth, as well as spectral and topographical predictors from VHSR multispectral drone imagery. By using simple and multiple linear regressions, we identify the contribution of predictors, taken individually, and jointly. The best individual drone-based predictor is the green waveband. Dealing with the addition of individual predictors to the red-green-blue (RGB) model, the highest gain is observed with the red edge waveband, followed by the near-infrared, then the digital surface model. The best full combination is the RGB enhanced by the red edge and the normalized difference vegetation index (coefficient of determination (R2): 0.85, root mean square error (RMSE): 0.20%/m).

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