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  • Aquaculture  (3,517)
  • Ecology  (3,315)
  • Iran  (2,794)
  • 2020-2022  (8,179)
  • 1940-1944
  • 1
    Publication Date: 2021-11-05
    Description: La demanda de productos pesqueros en el mercado mundial está aumentando, particularmente en Asia, dada la afluencia y la apreciación de los beneficios que ofrecen estos alimentos para la salud humana. Esto, combinado con el colapso significativo de las producciones provenientes de la pesca de captura, ha traído como consecuencia un desarrollo vertiginoso de la acuicultura. Hoy, la acuicultura mundial es el sector de más rápido crecimiento de la industria alimentaria y representa aproximadamente el 45,6 % del consumo mundial de pescado. Sin embargo, el rápido desarrollo de sistemas semiintensivos, especialmente la acuicultura marina intensiva, ha generado preocupación a nivel mundial por los posibles impactos ambientales, económicos y sociales del uso de estos sistemas. Durante los últimos años se han llevado a cabo significativas investigaciones sobre el desarrollo de sistemas sostenibles de producción de alimentos en agua salada, mediante el uso de sistemas mecánicos como, por ejemplo, los Sistemas de Recirculación Acuícola (RAS) y otros con un enfoque ecosistémico como la Acuicultura Multitrófica Integrada (AMTI). Este trabajo se basa en mostrar las características del desarrollo de los sistemas AMTI y las posibilidades de su aplicación como sistemas de producción amigables con el medio ambiente, que contribuyan a la seguridad alimentaria, orientados a fortalecer la resiliencia de las comunidades pesqueras y acuícolas dando respuesta a los Objetivos de Desarrollo Sostenible de la Agenda 2030.
    Description: The demand for fish products in the world market is increasing, particularly in Asia, given the influx and the appreciation of the benefits that this food offers for human health. This, combined with the significant collapse of production from capture fisheries, has led to the rapid development of aquaculture. Today, global aquaculture is the fastest growing sector of the food industry and accounts for approximately 45,6 % of global fish consumption. However, the rapid development of semi-intensive systems, especially intensive marine aquaculture, has generated worldwide concern about the possible environmental, economic and social impacts of the use of these systems. During the last few years, significant research has been carried out on the development of sustainable saltwater food production systems, using mechanical systems such as Aquaculture Recirculation Systems (ARS) and others with an ecosystem approach such as Integrated Multi-trophic Aquaculture (IMTA). This work is based on showing the characteristics of the development of the IMTA systems and the possibilities of their application as environmentally friendly production systems that contribute to food safety, oriented to strengthen the resilience of fishing and aquaculture communities by responding to the Sustainable Development Objectives of Agenda 2030.
    Description: Published
    Description: Refereed
    Keywords: Acuicultura ; Impacto ; Desarrollo sostenible ; Medio ambiente ; Alimentos ; Aquaculture ; Impact ; Sustainable development ; Environment ; Food
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: pp.8-20
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  • 2
    Publication Date: 2021-10-19
    Description: The analysis of current scientific, technological, regulatory and methodical literature concerning cultivation and biotechnology of non-traditional species of fish (arctic charr) and valuable species of marine invertebrates (red king crab and sea urchin), as well as technology for complex processing of aquatic organisms has been carried out. The modern trends and problems of cultivation and use of these objects have been described. It has been shown that the freshwater form of Arctic charr has been successfully used in aquaculture in many countries while the aquaculture of anadromous (migratory) charr as an object of mariculture is still poorly developed and using this fish in mariculture is still too early. It is possible that in the near future as a result of breeding selection or interspecific crosses some forms with the required properties will be obtained. An analysis of published data suggests that there were no regular maintenance work in Russia on cultivation of sea urchins for obtaining their high-quality products to establish a basis (ingredients) of production for therapeutic and prophylactic purposes. The main efforts of previous studies on aquaculture of red king crab were aimed at the cultivation of larvae and postlarvae and rearing of mature males to reach an appropriate commercial quality. However, it should be noted that the methods of cultivation of crabs aged 3–5 years have not yet been well developed. There is also no information on the availability of accessible and relatively cheap ways to accelerate the molting process in crab, and it is known that just a long period of growing this crustacean (the commercial size is reached at age of 9–10 years) prevents the development of the red king crab aquaculture in a commercial scale. Modern processing of marine aquatic organisms should be based on a comprehensive, non-waste approach of producing traditional foods, therapeutic and prophylactic means and feed for aquaculture. The establishment of such a united technological cycle for processing red king crabs, sea urchins, and arctic charrs is a promising direction of development of the fish processing industry in the Murmansk region.
    Description: Проведен анализ современной научно-технической, нормативной, методической литературы, касающейся биотехнологий выращивания нетрадиционных видов рыб (арктического гольца), ценных морских видов беспозвоночных животных (камчатского краба и морского ежа), а также технологий комплексной переработки гидробионтов. Описаны современные направления и проблемы культивирования и использования данных объектов. Показано, что пресноводные формы арктического гольца успешно используются в аквакультуре во многих странах мира, освоение анадромных (проходных) гольцов в качестве объекта марикультуры остается малоизученным, считать его объектом марикультуры пока рано. Вполне возможно, что в скором времени в результате селекционного отбора или межвидовых скрещиваний будут получены формы с необходимыми свойствами. Анализ литературных данных позволяет заключить, что в РФ не проводились регулярные работы по аквариальному содержанию морских ежей с целью получения высококачественного сырья для создания основы (ингредиентов) продукции лечебно-профилактического назначения. Основные усилия предыдущих исследований искусственного разведения камчатского краба были направлены на выращивание жизнестойкой молоди (мальков) и подращивание некондиционных особей до товарного качества. Вместе с тем следует отметить, что способы культивирования крабов в возрасте 3–5 лет совершенно не изучены. Также нет сведений о наличии доступных и относительно дешевых способов, направленных на ускорение линьки краба, а известно, что именно долгий период роста этого ракообразного (товарного размера особи достигают за 9–10 лет) препятствует развитию аквакультуры вида в промышленных масштабах. Современная переработка морских гидробионтов должна основываться на комплексном безотходном подходе с получением традиционных пищевых продуктов, лечебно-профилактических средств и кормов для аквакультуры. Создание подобного единого технологического цикла при переработке камчатского краба, морских ежей и арктического гольца является перспективным направлением развития рыбоперерабатывающей отрасли на территории Мурманской области.
    Description: Published
    Description: Refereed
    Keywords: Aquaculture ; King crab ; Sea urchin ; Arctic char ; Biologically active substances of hydrobionts ; Аквакультура ; Камчатский краб ; Морской еж ; Арктический голец ; Биологически активные вещества гидробионтов ; Aquaculture ; Аквакультура
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: pp.355-370
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  • 3
    Publication Date: 2021-09-30
    Description: To assess the impact of antibiotic use in aquaculture in Nha Trang bay, we conducted this study with the aim of assessing antibiotic resistance of opportunistic pathogenic bacteria isolated from water and sediment around shrimp/fish cages in the Nha Trang bay. 109 strains of Vibrio, Salmonella-Shigella and Aeromonas groups were isolated in the surrounding environment of farming areas in Dam Bay and Hon Mieu. Antimicrobial resistance test of these 109 strains showed that in the water environment in Dam Bay, TET (96.6%) and NIT (92.5%) were the two antibiotics with the highest rates of resistant bacteria while no bacteria were resistant to RIF. All 5 types of antibiotics had a statistically insignificant percentage of antibiotic-resistant bacteria in water samples at Hon Mieu, ranging from 33.3% to 68.9%. Also in the water environment, the rate of antibiotic-resistant bacteria in Dam Bay was not influenced by the distance to the cages (42.5–66.6%). Meanwhile, in Hon Mieu, the highest rate of resistant bacteria was observed at the distance of 200 m (100%) away from cages and the lowest rate at the distance of 100 m (20%). In the sediment environment around the cages, both the Dam Bay and Hon Mieu farming areas showed the highest rates of antibiotic-resistant bacteria against TET, NIF and RIF had the lowest rate of resistant bacteria. Among the total of 109 strains tested for antibiotic resistance, 2 strains labeled TCBS_HM200 m and SS_HM200 m were found to be resistant to all 5 tested antibiotics. These two strains were respectively identified as Vibrio harveyi and Oceanimonas sp.
    Description: Published
    Description: Refereed
    Keywords: Nha Trang bay ; Aquaculture ; Sediment ; Seawater ; Pathogen ; Antibiotic resistance
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: pp. 199-209
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  • 4
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    In:  http://aquaticcommons.org/id/eprint/8004 | 424 | 2012-03-08 12:47:02 | 8004 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Petersen disc tag marking experiments confirm the influence of animal size and marking time on the recapture rate. Westward migrations occur, probably following the Ivorian undercurrent. Catchability coefficients have been evaluated for the Grand-Bassam fishing ground and tentatively extrapolated to the other fishing areas. The extrapolated non weighted coefficient for the entire fishing areas is q=0.00069/fishing day for an area of 390 miles. The instantaneous coefficient of residual mortality X taken as a first and possibly slightly overestimated value of M the natural mortality, has been estimated at 0.155/month, strongly corroborating Berry's results (1967). This value is however much smaller than that given by earlier authors. It is suggested that q could have a higher value during the very first weeks of exploitation at sea, when the juveniles are concentrated near the lagoon outlets.
    Keywords: Biology ; Ecology ; Côte d'Ivoire ; Penaeus duorarum ; migration ; tagging ; recapture ; mortality
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 21-44
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  • 5
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    In:  http://aquaticcommons.org/id/eprint/7960 | 424 | 2012-03-07 15:19:38 | 7960 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: The seasonal variations of vertical distribution and abundance over the shelf are investigated for Doliolids, Salps and Larvacea. The 3 groups present many similar ecological features. Two maxima of abundance occur during the little and main cool seasons. The second maximum is usually the most important, except for Salps. The 3 taxons inhabit more superficial layers in cool than in warm seasons. This allows them to follow the phytoplankton maximum which drifts near the thermocline during the warm season. Pelagic Tunicates come back to the phytoplankton enrichment areas by the deeper Ivorian under-current. A relationship between the vertical distribution pattern and the life cycle (sexual or asexual generation) is suggested.
    Keywords: Biology ; Ecology ; Oceanography ; Côte d'Ivoire ; Doliolida ; Salps ; Larvacea ; Tunicates ; zooplankton ; vertical distribution ; life cycle
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 45-61
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  • 6
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    In:  http://aquaticcommons.org/id/eprint/7962 | 424 | 2012-03-07 15:19:01 | 7962 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: The warm season is the abundance period of the planktonic larval stages of Decapod Crustacea and of Lucifer faxonii in Ivoirian waters. Two or three maxima occur each year during the enrichments interrupting the warm and oligotropic season: February (small upwellings), June - some years - (first rains) and September - November (flood of rivers, end of cold season). Vertical distribution follows seasonal variations and varies little among the taxons. In a general way, Decapod larvae and Lucifer inhabit superficial layers in cold season and sink down during the warm season. It allows them to follow the maximum of primary production. Lucifer faxonii is breeding almost the year long. Breeds succede at rate of 3,7 weeks approximately.
    Keywords: Biology ; Ecology ; Oceanography ; Côte d'Ivoire ; Decapods larvae ; Lucifer ; zooplankton ; vertical distribution ; life cycle
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 63-84
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  • 7
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    In:  http://aquaticcommons.org/id/eprint/7963 | 424 | 2012-03-07 15:17:44 | 7963 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Euphausiids vertical distribution on the Côte d'Ivoire continental shelf during different seasons, average zonal distrubution, mean distance to the shore, and seasonal variations in abundance computed for five years, suggest that the appearance, and the shifting of euphausiids across and along the shelf are related with the variations of the distance from the shore of the ivorian under-current. The author reports that Nyctiphanes capensis has not been found in the region.
    Keywords: Biology ; Ecology ; Oceanography ; Côte d'Ivoire ; Euphausiacea ; Nyctiphanes capensis ; zooplankton ; vertical distribution ; life cycle
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 85-90
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  • 8
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    In:  http://aquaticcommons.org/id/eprint/7980 | 424 | 2012-03-08 12:52:44 | 7980 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Spawning of bonga (Ethmalosa fimbriata Bowdich) takes place in polyhalin waters (Sppt. 〉 5ppt.). Migrations of young fish were studied by the mean of length data observed in different points of the lagoon from the artisanal fishery. Bonga remain 4 months in the hatchery (6 cm), before they expand in the whole lagoon until the age of 9/10 months. After this expansion phase, the fishes come back to the spawning fields (spawning length: 14/15 cm). Postspawning fishes leave the lagoon. Between birth and spawning, bonga are not affected by salinity changes, but reproduction occurs only in waters where salinity is higher than 5ppt.
    Keywords: Biology ; Ecology ; Fisheries ; Côte d'Ivoire ; Lagune Ebrié ; Ethmalosa fimbriata ; bonga ; spawning ; salinity
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 3-41
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  • 9
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    In:  http://aquaticcommons.org/id/eprint/7959 | 424 | 2012-03-07 15:20:41 | 7959 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Ecology and dynamics of juvenile pink shrimp Penaeus duorarum were studied from weekly sampling in the Abidjan lagoon system. After a brief description of biogeography and principal features of climate, hydrology of Ebrié lagoon and Adiopodoumé bay were considered. Shrimp distribution were connected with the main environmental factors. Precise work was done in Adiopodoumé bay, especially concerning the succession of age classes, their growth on the nursery grounds, seasonal variation in abundance, size and distribution, in relation to environmental factors. These results, and former knowledges, allowed us to propose a general pattern for pink shrimp life history in Côte d'Ivoire.
    Keywords: Biology ; Ecology ; Côte d'Ivoire ; Lagune Ebrié ; Adiopodoumé bay ; lagoons ; Penaeus duorarum ; northern pink shrimp
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-44
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  • 10
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    In:  http://aquaticcommons.org/id/eprint/8047 | 424 | 2012-03-09 08:58:14 | 8047 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Principal biometric relations have been calculated for juvenile pink shrimp Penaeus duorarum, of Côte d'Ivoire lagoons. Growth has been studied from weekly sampling using Petersen's method and Von Bertalanffy's equation. Results are very similar to those obtained by the authors working in the same environmental conditions, especially concerning temperature.
    Keywords: Biology ; Ecology ; Côte d'Ivoire ; Penaeus duorarum ; northern pink shrimp ; biometry ; growth
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 53-71
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