The Experts below are selected from a list of 10212 Experts worldwide ranked by ideXlab platform
Sun Xiaowen - One of the best experts on this subject based on the ideXlab platform.
-
Gonadal transcriptomic analysis of yellow catfish (Pelteobagrus fulvidraco): identification of sex-related genes and genetic markers
Physiological genomics, 2014Co-Authors: Peixian Luan, Xiaofeng Zhang, Xue Shuqun, Lina Peng, Shahid Mahbooband, Sun XiaowenAbstract:Yellow catfish (Pelteobagrus fulvidraco) has been recognized as a vital Freshwater Aquaculture species in East and Southeast Asia. In addition to its commercial interest, it is also attracted much ...
Pierre Freon - One of the best experts on this subject based on the ideXlab platform.
-
comparative environmental performance of artisanal and commercial feed use in peruvian Freshwater Aquaculture
Aquaculture, 2015Co-Authors: Angel Avadi, Nathan Pelletier, Joel Aubin, Stephane Ralite, Jesus Nunez, Pierre FreonAbstract:abstract Article history:Received 8 October 2013Received in revised form 4 April 2014Accepted 1 August 2014Available online 27 August 2014Keywords:AquafeedBlack pacuEnvironmental impact assessmentPeruTroutTilapia We used Life Cycle Assessment (LCA) to evaluate some of the environmental implications of using commercialversus artisanal feeds in Peruvian Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromisspp.) and black pacu (Colossoma macropomum). Several scenarios believed to be representative of currentPeruvian Aquaculture practices were modelled, namely: production of trout in Andean lake cages; and cultureofblackpacu and tilapiainAmazonianand coastal lowland ponds,respectively. In general,Peruvian Aquacultureischaracterisedbylowtechnologicalintensitypractices.Useofcommercialaquafeedsiswidespread,butartisanalfeeds are frequently used in certain small-scale farms.We found that trout feeds feature higher environmental burdens than do black pacu and tilapia feeds. A similartrend is observed for production of these species. Across species, the substitution of artisanal with commercialfeeds, despite improving feed conversion ratios in all cases, does not always reduce overall environmentalimpacts. This is due to the additional energy use and transportation requirements associated with commercialfeedinputs.Thesubstitutionofartisanalfeedswithcommercialonesgenerallyincreasesenvironmentalimpactsofthefishfarmingsystemsforthespecificfeedsconsidered,despiteenhancedFCRsandeconomiesofscale.Thisis due to the higher environmental impacts associated to certain feed inputs used in commercial feeds, inparticularhighlyrefinedfeedinputs.Consequently,inlightoftheimportanceoffeedstooveralllifecycleimpactsofAquacultureproduction,thePeruvianaquafeedindustryshouldpreferentiallysourcelessrefinedand,ingener-al, less environmentally burdened feed inputs (e.g. Bolivian soybean products over Brazilian, high quality overlower quality fishmeal, avoiding protein concentrates, etc.), to the extent that fish farming performance (i.e.feed conversion efficiency and cost structure) is not strongly affected. Among species, black pacu Aquacultureshows the best environmental performance.© 2014 Elsevier B.V. All rights reserved.
-
A set of sustainability performance indicators for seafood: Direct human consumption products from Peruvian anchoveta fisheries and Freshwater Aquaculture
Ecological Indicators, 2015Co-Authors: Angel Avadi, Pierre FreonAbstract:Different seafood products based on Peruvian anchoveta (Engraulis ringens) fisheries and Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromis spp.) and black pacu (Colossoma macropomum), contribute at different scales to the socio-economic development, environmental degradation and nutrition of the Peruvian population. Various indicators have been used in the literature to assess the performance of these industries regarding different aspects of sustainability, notably their socio-economic performance. In this study, a novel set of indicators is proposed to evaluate the sustainability performance of these industries in Peru, based on life cycle assessment (LCA) and nutritional profiling, as well as on energy and socio-economic assessment approaches. The emphasis is put on the potential of different products to contribute to improving the nutrition of the Peruvian population in an energy-efficient, environmentally friendly and socio-economically sound way. The set of indicators includes biotic resource use (BRU), cumulative energy demand (CED), energy return on investment (EROI), production costs, gross profit generation, added value, and nutritional profile in terms of vitamins, minerals and essential fatty acids; as well as a number of life cycle impact assessment indicators commonly used in seafood studies, and some recently proposed indicators of resource status (measuring the impacts of fish biomass removal at the species and ecosystem levels). Results suggest that more energy-intensive/highly processed products (cured and canned anchoveta products) represent a higher burden, in terms of environmental impact, than less energy-intensive products (salted and frozen anchoveta products, semi-intensive Aquaculture products). This result is confirmed when comparing all products regarding their industrial-to-nutritional energy ratio. Regarding the other attributes analysed, the scoring shows that salted and frozen anchoveta products generate fewer jobs and lower gross profit than canned and cured, while Aquaculture products maximise them. Overall, it was concluded that less energy-intensive industries (anchoveta freezing and salting) are the least environmentally impacting but also the least economically interesting products, yet delivering higher nutritional value. Aquaculture products maximise gross profit and job creation, with lower energy efficiency and nutritional values. The proposed set of sustainability indicators fulfilled its goal in providing a multi-criteria assessment of anchoveta direct human consumption and Freshwater Aquaculture products. As often the case, there is no ideal product and the best trade-off must be sought when making decision regarding fisheries and seafood policy. No threshold for performance of the different indicators is offered, because the goal of the comparison is to contrast the relative performance among products, not of products against reference values.
-
Comparative environmental performance of artisanal and commercial feed use in Peruvian Freshwater Aquaculture
Aquaculture, 2015Co-Authors: Angel Avadi, Nathan Pelletier, Joel Aubin, Stephane Ralite, Jesus Nunez, Pierre FreonAbstract:We used Life Cycle Assessment (LCA) to evaluate some of the environmental implications of using commercial versus artisanal feeds in Peruvian Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromis spp.) and black pacu (Colossoma macropomum). Several scenarios believed to be representative of current Peruvian Aquaculture practices were modelled, namely: production of trout in Andean lake cages; and culture of black pacu and tilapia in Amazonian and coastal lowland ponds, respectively. In general, Peruvian Aquaculture is characterised by low technological intensity practices. Use of commercial aquafeeds is widespread, but artisanal feeds are frequently used in certain small-scale farms. We found that trout feeds feature higher environmental burdens than do black pacu and tilapia feeds. A similar trend is observed for production of these species. Across species, the substitution of artisanal with commercial feeds, despite improving feed conversion ratios in all cases, does not always reduce overall environmental impacts. This is due to the additional energy use and transportation requirements associated with commercial feed inputs. The substitution of artisanal feeds with commercial ones generally increases environmental impacts of the fish farming systems for the specific feeds considered, despite enhanced FCRs and economies of scale. This is due to the higher environmental impacts associated to certain feed inputs used in commercial feeds, in particular highly refined feed inputs. Consequently, in light of the importance of feeds to overall life cycle impacts of Aquaculture production, the Peruvian aquafeed industry should preferentially source less refined and, in general, less environmentally burdened feed inputs (e. g. Bolivian soybean products over Brazilian, high quality over lower quality fishmeal, avoiding protein concentrates, etc.), to the extent that fish farming performance (i.e. feed conversion efficiency and cost structure) is not strongly affected. Among species, black pacu Aquaculture shows the best environmental performance. (C) 2014 Elsevier B.V. All rights reserved.
-
Comparative environmental performance of artisanal and commercial feed use in Peruvian Freshwater Aquaculture
Aquaculture, 2015Co-Authors: Angel Avadi, Nathan Pelletier, Joel Aubin, Stephane Ralite, Jesus Nunez, Pierre FreonAbstract:AquacultureISI Document Delivery No.: AT9EATimes Cited: 0Cited Reference Count: 99Avadi, Angel Pelletier, Nathan Aubin, Joel Ralite, Stephane Nunez, Jesus Freon, PierreDirection des Programmes de Recherche et de la formation au Sud (DPF) of the IRDThis work, carried out by members of the Anchoveta Supply Chain (ANCHOVETA-SC) project (http://anchoveta-sc.wikispaces.com), is a contribution to the International Joint Laboratory "Dynamics of the Humboldt Current system" (LMI-DISCOH) coordinated by the Institut de Recherche pour le Developpement (IRD) and the Instituto del Mar del Peru (IMARPE), and the International Joint Laboratory "Evolution and Domestication of Amazon Ichthyofauna" (LMI EDIA). It was carried out under the sponsoring of the Direction des Programmes de Recherche et de la formation au Sud (DPF) of the IRD. Some of the authors are members of the ELSA research group (Environmental Life Cycle and Sustainability Assessment, http://www.elsa-lca.org/). We acknowledge Hugo Trevino (IMARPE Puno), Camilo Cuba (Universidad Nacional Federico Villarreal) and the Instituto de Investigaciones de la Amazonia Peruana (IIAP) for their valuable support in data gathering. We acknowledge Peter Tyedmers (Dalhousie University) for his conceptual and design contributions to this paper.Elsevier science bvAmsterdamWe used Life Cycle Assessment (LCA) to evaluate some of the environmental implications of using commercial versus artisanal feeds in Peruvian Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromis spp.) and black pacu (Colossoma macropomum). Several scenarios believed to be representative of current Peruvian Aquaculture practices were modelled, namely: production of trout in Andean lake cages; and culture of black pacu and tilapia in Amazonian and coastal lowland ponds, respectively. In general, Peruvian Aquaculture is characterised by low technological intensity practices. Use of commercial aquafeeds is widespread, but artisanal feeds are frequently used in certain small-scale farms. We found that trout feeds feature higher environmental burdens than do black pacu and tilapia feeds. A similar trend is observed for production of these species. Across species, the substitution of artisanal with commercial feeds, despite improving feed conversion ratios in all cases, does not always reduce overall environmental impacts. This is due to the additional energy use and transportation requirements associated with commercial feed inputs. The substitution of artisanal feeds with commercial ones generally increases environmental impacts of the fish farming systems for the specific feeds considered, despite enhanced FCRs and economies of scale. This is due to the higher environmental impacts associated to certain feed inputs used in commercial feeds, in particular highly refined feed inputs. Consequently, in light of the importance of feeds to overall life cycle impacts of Aquaculture production, the Peruvian aquafeed industry should preferentially source less refined and, in general, less environmentally burdened feed inputs (e. g. Bolivian soybean products over Brazilian, high quality over lower quality fishmeal, avoiding protein concentrates, etc.), to the extent that fish farming performance (i.e. feed conversion efficiency and cost structure) is not strongly affected. Among species, black pacu Aquaculture shows the best environmental performance. (C) 2014 Elsevier B.V. All rights reserved
Peixian Luan - One of the best experts on this subject based on the ideXlab platform.
-
Gonadal transcriptomic analysis of yellow catfish (Pelteobagrus fulvidraco): identification of sex-related genes and genetic markers
Physiological genomics, 2014Co-Authors: Peixian Luan, Xiaofeng Zhang, Xue Shuqun, Lina Peng, Shahid Mahbooband, Sun XiaowenAbstract:Yellow catfish (Pelteobagrus fulvidraco) has been recognized as a vital Freshwater Aquaculture species in East and Southeast Asia. In addition to its commercial interest, it is also attracted much ...
Angel Avadi - One of the best experts on this subject based on the ideXlab platform.
-
comparative environmental performance of artisanal and commercial feed use in peruvian Freshwater Aquaculture
Aquaculture, 2015Co-Authors: Angel Avadi, Nathan Pelletier, Joel Aubin, Stephane Ralite, Jesus Nunez, Pierre FreonAbstract:abstract Article history:Received 8 October 2013Received in revised form 4 April 2014Accepted 1 August 2014Available online 27 August 2014Keywords:AquafeedBlack pacuEnvironmental impact assessmentPeruTroutTilapia We used Life Cycle Assessment (LCA) to evaluate some of the environmental implications of using commercialversus artisanal feeds in Peruvian Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromisspp.) and black pacu (Colossoma macropomum). Several scenarios believed to be representative of currentPeruvian Aquaculture practices were modelled, namely: production of trout in Andean lake cages; and cultureofblackpacu and tilapiainAmazonianand coastal lowland ponds,respectively. In general,Peruvian Aquacultureischaracterisedbylowtechnologicalintensitypractices.Useofcommercialaquafeedsiswidespread,butartisanalfeeds are frequently used in certain small-scale farms.We found that trout feeds feature higher environmental burdens than do black pacu and tilapia feeds. A similartrend is observed for production of these species. Across species, the substitution of artisanal with commercialfeeds, despite improving feed conversion ratios in all cases, does not always reduce overall environmentalimpacts. This is due to the additional energy use and transportation requirements associated with commercialfeedinputs.Thesubstitutionofartisanalfeedswithcommercialonesgenerallyincreasesenvironmentalimpactsofthefishfarmingsystemsforthespecificfeedsconsidered,despiteenhancedFCRsandeconomiesofscale.Thisis due to the higher environmental impacts associated to certain feed inputs used in commercial feeds, inparticularhighlyrefinedfeedinputs.Consequently,inlightoftheimportanceoffeedstooveralllifecycleimpactsofAquacultureproduction,thePeruvianaquafeedindustryshouldpreferentiallysourcelessrefinedand,ingener-al, less environmentally burdened feed inputs (e.g. Bolivian soybean products over Brazilian, high quality overlower quality fishmeal, avoiding protein concentrates, etc.), to the extent that fish farming performance (i.e.feed conversion efficiency and cost structure) is not strongly affected. Among species, black pacu Aquacultureshows the best environmental performance.© 2014 Elsevier B.V. All rights reserved.
-
A set of sustainability performance indicators for seafood: Direct human consumption products from Peruvian anchoveta fisheries and Freshwater Aquaculture
Ecological Indicators, 2015Co-Authors: Angel Avadi, Pierre FreonAbstract:Different seafood products based on Peruvian anchoveta (Engraulis ringens) fisheries and Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromis spp.) and black pacu (Colossoma macropomum), contribute at different scales to the socio-economic development, environmental degradation and nutrition of the Peruvian population. Various indicators have been used in the literature to assess the performance of these industries regarding different aspects of sustainability, notably their socio-economic performance. In this study, a novel set of indicators is proposed to evaluate the sustainability performance of these industries in Peru, based on life cycle assessment (LCA) and nutritional profiling, as well as on energy and socio-economic assessment approaches. The emphasis is put on the potential of different products to contribute to improving the nutrition of the Peruvian population in an energy-efficient, environmentally friendly and socio-economically sound way. The set of indicators includes biotic resource use (BRU), cumulative energy demand (CED), energy return on investment (EROI), production costs, gross profit generation, added value, and nutritional profile in terms of vitamins, minerals and essential fatty acids; as well as a number of life cycle impact assessment indicators commonly used in seafood studies, and some recently proposed indicators of resource status (measuring the impacts of fish biomass removal at the species and ecosystem levels). Results suggest that more energy-intensive/highly processed products (cured and canned anchoveta products) represent a higher burden, in terms of environmental impact, than less energy-intensive products (salted and frozen anchoveta products, semi-intensive Aquaculture products). This result is confirmed when comparing all products regarding their industrial-to-nutritional energy ratio. Regarding the other attributes analysed, the scoring shows that salted and frozen anchoveta products generate fewer jobs and lower gross profit than canned and cured, while Aquaculture products maximise them. Overall, it was concluded that less energy-intensive industries (anchoveta freezing and salting) are the least environmentally impacting but also the least economically interesting products, yet delivering higher nutritional value. Aquaculture products maximise gross profit and job creation, with lower energy efficiency and nutritional values. The proposed set of sustainability indicators fulfilled its goal in providing a multi-criteria assessment of anchoveta direct human consumption and Freshwater Aquaculture products. As often the case, there is no ideal product and the best trade-off must be sought when making decision regarding fisheries and seafood policy. No threshold for performance of the different indicators is offered, because the goal of the comparison is to contrast the relative performance among products, not of products against reference values.
-
Comparative environmental performance of artisanal and commercial feed use in Peruvian Freshwater Aquaculture
Aquaculture, 2015Co-Authors: Angel Avadi, Nathan Pelletier, Joel Aubin, Stephane Ralite, Jesus Nunez, Pierre FreonAbstract:We used Life Cycle Assessment (LCA) to evaluate some of the environmental implications of using commercial versus artisanal feeds in Peruvian Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromis spp.) and black pacu (Colossoma macropomum). Several scenarios believed to be representative of current Peruvian Aquaculture practices were modelled, namely: production of trout in Andean lake cages; and culture of black pacu and tilapia in Amazonian and coastal lowland ponds, respectively. In general, Peruvian Aquaculture is characterised by low technological intensity practices. Use of commercial aquafeeds is widespread, but artisanal feeds are frequently used in certain small-scale farms. We found that trout feeds feature higher environmental burdens than do black pacu and tilapia feeds. A similar trend is observed for production of these species. Across species, the substitution of artisanal with commercial feeds, despite improving feed conversion ratios in all cases, does not always reduce overall environmental impacts. This is due to the additional energy use and transportation requirements associated with commercial feed inputs. The substitution of artisanal feeds with commercial ones generally increases environmental impacts of the fish farming systems for the specific feeds considered, despite enhanced FCRs and economies of scale. This is due to the higher environmental impacts associated to certain feed inputs used in commercial feeds, in particular highly refined feed inputs. Consequently, in light of the importance of feeds to overall life cycle impacts of Aquaculture production, the Peruvian aquafeed industry should preferentially source less refined and, in general, less environmentally burdened feed inputs (e. g. Bolivian soybean products over Brazilian, high quality over lower quality fishmeal, avoiding protein concentrates, etc.), to the extent that fish farming performance (i.e. feed conversion efficiency and cost structure) is not strongly affected. Among species, black pacu Aquaculture shows the best environmental performance. (C) 2014 Elsevier B.V. All rights reserved.
-
Comparative environmental performance of artisanal and commercial feed use in Peruvian Freshwater Aquaculture
Aquaculture, 2015Co-Authors: Angel Avadi, Nathan Pelletier, Joel Aubin, Stephane Ralite, Jesus Nunez, Pierre FreonAbstract:AquacultureISI Document Delivery No.: AT9EATimes Cited: 0Cited Reference Count: 99Avadi, Angel Pelletier, Nathan Aubin, Joel Ralite, Stephane Nunez, Jesus Freon, PierreDirection des Programmes de Recherche et de la formation au Sud (DPF) of the IRDThis work, carried out by members of the Anchoveta Supply Chain (ANCHOVETA-SC) project (http://anchoveta-sc.wikispaces.com), is a contribution to the International Joint Laboratory "Dynamics of the Humboldt Current system" (LMI-DISCOH) coordinated by the Institut de Recherche pour le Developpement (IRD) and the Instituto del Mar del Peru (IMARPE), and the International Joint Laboratory "Evolution and Domestication of Amazon Ichthyofauna" (LMI EDIA). It was carried out under the sponsoring of the Direction des Programmes de Recherche et de la formation au Sud (DPF) of the IRD. Some of the authors are members of the ELSA research group (Environmental Life Cycle and Sustainability Assessment, http://www.elsa-lca.org/). We acknowledge Hugo Trevino (IMARPE Puno), Camilo Cuba (Universidad Nacional Federico Villarreal) and the Instituto de Investigaciones de la Amazonia Peruana (IIAP) for their valuable support in data gathering. We acknowledge Peter Tyedmers (Dalhousie University) for his conceptual and design contributions to this paper.Elsevier science bvAmsterdamWe used Life Cycle Assessment (LCA) to evaluate some of the environmental implications of using commercial versus artisanal feeds in Peruvian Freshwater Aquaculture of trout (Oncorhynchus mykiss), tilapia (Oreochromis spp.) and black pacu (Colossoma macropomum). Several scenarios believed to be representative of current Peruvian Aquaculture practices were modelled, namely: production of trout in Andean lake cages; and culture of black pacu and tilapia in Amazonian and coastal lowland ponds, respectively. In general, Peruvian Aquaculture is characterised by low technological intensity practices. Use of commercial aquafeeds is widespread, but artisanal feeds are frequently used in certain small-scale farms. We found that trout feeds feature higher environmental burdens than do black pacu and tilapia feeds. A similar trend is observed for production of these species. Across species, the substitution of artisanal with commercial feeds, despite improving feed conversion ratios in all cases, does not always reduce overall environmental impacts. This is due to the additional energy use and transportation requirements associated with commercial feed inputs. The substitution of artisanal feeds with commercial ones generally increases environmental impacts of the fish farming systems for the specific feeds considered, despite enhanced FCRs and economies of scale. This is due to the higher environmental impacts associated to certain feed inputs used in commercial feeds, in particular highly refined feed inputs. Consequently, in light of the importance of feeds to overall life cycle impacts of Aquaculture production, the Peruvian aquafeed industry should preferentially source less refined and, in general, less environmentally burdened feed inputs (e. g. Bolivian soybean products over Brazilian, high quality over lower quality fishmeal, avoiding protein concentrates, etc.), to the extent that fish farming performance (i.e. feed conversion efficiency and cost structure) is not strongly affected. Among species, black pacu Aquaculture shows the best environmental performance. (C) 2014 Elsevier B.V. All rights reserved
Shahid Mahbooband - One of the best experts on this subject based on the ideXlab platform.
-
Gonadal transcriptomic analysis of yellow catfish (Pelteobagrus fulvidraco): identification of sex-related genes and genetic markers
Physiological genomics, 2014Co-Authors: Peixian Luan, Xiaofeng Zhang, Xue Shuqun, Lina Peng, Shahid Mahbooband, Sun XiaowenAbstract:Yellow catfish (Pelteobagrus fulvidraco) has been recognized as a vital Freshwater Aquaculture species in East and Southeast Asia. In addition to its commercial interest, it is also attracted much ...
