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  • 1
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    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/11251 | 115 | 2013-07-12 04:41:49 | 11251 | WorldFish Center
    Publication Date: 2021-06-30
    Description: Use of manufactured feeds in aquaculture in Bangladesh has grown rapidly over the last five years. More than 1 million tonnes of commercially formulated feeds and 0.3-0.4 million tonnes of farm-made feeds were produced in 2012, and sectoral growth is projected to increase substantially over the medium term. This working paper summarizes findings from a study, conducted as part of the WorldFish/USAID “Feed the Future-Aquaculture” project in 2012, assessing the current status of the aquaculture feed sector in Bangladesh. Fish feed value chains, market trends, ingredients and formulation systems, farm feeding practices, ancillary services and feed regulations were investigated. The study identifies a number of entry points for interventions in the sector, and investments which would improve feed quality and farmer access to better feeds and support the growth of sustainable aquaculture.
    Description: CGIAR Research Program on Livestock and Fish
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Aquaculture ; Aquaculture ; Feed ; Marketing ; Socioeconomic aspects ; Aquaculture development ; Aquaculture enterprises ; Aquaculture regulations ; Value chains ; Bangladesh
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 2
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    The WorldFish Center | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/7516 | 115 | 2012-01-10 10:04:26 | 7516 | WorldFish Center
    Publication Date: 2021-07-03
    Description: Fish play a crucial role in the Bangladeshi diet, providing more than 60% of animal source food, representing a crucial source of micro-nutrients, and possessing an extremely strong cultural attachment. Fish (including shrimp and prawn) is the second most valuable agricultural crop, and its production contributes to the livelihoods and employment of millions. The culture and consumption of fish therefore has important implications for national food and nutrition security, poverty and growth. This review examines the current state of knowledge on the aquaculture sector and fish consumption in Bangladesh, based on extensive analysis of secondary sources (including unpublished data unavailable elsewhere), consultation with various experts and specially conducted surveys.
    Keywords: Aquaculture ; Food fish ; Aquaculture ; Food consumption ; Bangladesh
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 71
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  • 3
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    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15594 | 115 | 2014-11-19 08:33:03 | 15594 | WorldFish Center
    Publication Date: 2021-07-08
    Description: Increases in fish demand in the coming decades are projected to be largely met by growth of aquaculture. However, increased aquaculture production is linked to higher demand for natural resources and energy as well as emissions to the environment. This paper explores the use of Life Cycle Assessment to improve knowledge of potential environmental impacts of future aquaculture growth. Different scenarios of future aquaculture development are taken into account in calculating the life cycle environmental impacts. The environmental impact assessments were built on Food and Agriculture Organization statistics in terms of production volume of different species, whereas the inputs and outputs associated with aquaculture production systems were sourced from the literature. The matrix of input-output databases was established through the Blue Frontiers study.
    Keywords: Agriculture ; Aquaculture ; Aquaculture ; Climate change ; Development ; Environmental assessment ; Environmental impact ; Research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 4
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    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/20520 | 115 | 2016-04-21 08:01:48 | 20520 | WorldFish Center
    Publication Date: 2021-07-10
    Description: Fish is crucial to food and nutrition security in Solomon Islands, and demand is expected to increase due to a growing population. However, it is projected that current capture fisheries production will not meet this growing demand. Aquaculture has the potential to mitigate the capture fishery shortfall, and the Government of Solomon Islands is prioritizing aquaculture as a solution to meet future food and income needs. Aquaculture in Solomon Islands is still in early development. Mozambique tilapia (Oreochromis mossambicus) is farmed for household consumption, but its prolific reproductive rate and resulting slow growth limit its potential as a commercial aquaculture species. More productive fish species that are not indigenous to Solomon Islands but are successfully farmed overseas could be introduced; however, such a decision needs to take into account the potential ecological or social impacts. For land-based pond aquaculture, the only indigenous species that has been farmed extensively elsewhere is milkfish (Chanos chanos). This report presents a feasibility assessment for milkfish farming in Solomon Islands. It synthesizes the current knowledge about milkfish farming and presents results of a 4-year study on the potential for milkfish aquaculture in Solomon Islands.
    Description: Australian Centre for International Agricultural Research
    Description: Developing inland aquaculture in Solomon Islands
    Keywords: Aquaculture ; Aquaculture ; Milkfish ; Research ; Pacific ; Solomon Islands
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 97
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  • 5
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    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/20169 | 115 | 2016-03-08 00:28:13 | 20169 | WorldFish Center
    Publication Date: 2021-07-08
    Description: In Cambodia, fish provide a major source of animal protein for rural households. Capture fisheries have declined and aquaculture has been identified as playing an important role in food and nutritional security and rural income generation. In 2011, WorldFish, in partnership with the Stung Treng Fishery Administration Cantonment and the Culture and Environment Preservation Association, aimed at improving the uptake of small-scale aquaculture by communities with limited experience in fish culture in Stung Treng Province in northeast Cambodia. The system was given the name “WISH ponds,” derived from the combination of the words "water" and "fish" to reflect the integration of fish cultivation with water for storage and vegetable growing. It was targeted towards households with limited space to construct large aquaculture ponds, such as peri-urban households. The study indicated that WISH ponds can create an important learning platform for communities to address challenges associated with small-scale aquaculture development by using scientific data generated and owned by the participants. Results from this 2011 study provided important insights into the challenges and constraints for introducing small-scale aquaculture into rural households in Cambodia. In mid-2013, WorldFish won a Feed the Future Partnering for Innovation grant, funded by the United States Agency for International Development, to build upon its successful engagement with communities in northeast Cambodia where WISH ponds had already been introduced and investigate scaling this technology to establish more WISH ponds in these communities.
    Description: United States Agency for International Development
    Description: WISH pond
    Keywords: Aquaculture ; Small-scale aquaculture ; Fish ponds ; Gender ; Research ; Southeast Asia ; Cambodia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 19
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  • 6
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    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/18467 | 115 | 2015-10-28 07:40:12 | 18467 | WorldFish Center
    Publication Date: 2021-07-09
    Description: Aquaculture is the fastest-growing food production sector globally, with production projected to double within the next 15–20 years. Future growth of aquaculture is essential to providing sustainable supplies of fish in national, regional and global fish food systems; creating jobs; and maintaining fish at affordable levels for resource-poor consumers. To ensure that the anticipated growth of aquaculture remains both economically and ecologically sustainable, we need to better understand the likely patterns of growth, as well as the opportunities and challenges, that these trends present. This knowledge will enable us to better prioritize investments that will help ensure the sustainable development of the sector. In Indonesia, WorldFish and partners have applied a unique methodology to evaluate growth trajectories for aquaculture under various scenarios, as well as the opportunities and challenges these represent. Indonesia is currently the fourth largest aquaculture producer globally, and the sector needs to grow to meet future fish demand. The study overlapped economic and environmental models with quantitative and participatory approaches to understand the future of aquaculture in Indonesia. Such analyses, while not definitive, have provided new understanding of the future supply and demand for seafood in Indonesia stretching to 2030. The learning from this research provides a foundation for future interventions in Indonesian fish food systems, as well as a suite of methodologies that can be applied more widely for insightful analyses of aquaculture growth trajectories in other countries or regions.
    Description: Gordon and Betty Moore Foundation
    Description: CGIAR Research Programs on Policies, Institutions and Markets
    Description: CGIAR Research Programs on Livestock and Fish
    Keywords: Aquaculture ; Fisheries ; Aquaculture ; Fisheries ; Research ; Asia ; Indonesia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 16
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  • 7
    ISSN: 1871-4528
    Keywords: resistance ; potato breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Über Unterschiede in der Vermehrung des Kartoffelzystennematoden auf anfälligen Kartoffelsorten wurde schon früher kurz berichtet. Versuche, die im Scottish Crop Research Institute durchgeführt wurden und Ergebnisse aus Prüfungen von Zuchtmaterial haben ergeben dass im Hinblick auf die Resistenz gegen den Kartoffelzystennematoden phänotypische und genotypische Unterschiede zwischen den Klonen bestehen. Hier wird über Untersuchungen repräsentativer Sorten derSolanum tuberosum ssp.tuberosum Gruppe in bezug auf Variationen ihrer Anfälligkeit gegenGlobodera pallida berichtet. Tabelle 1 zeigt eine Reihe von allgemein als anfällig geltenden Kartoffelsorten, die mitG. pallida (Pa 2/3) geprüft wurden. Es wird über fünf Versuche berichtet; in den ersten drei (1A, 1B und 1C) wird die Resistenz von Klonen die aus Knollen aufgewachsen waren, erfasst und in den anderen zwei Versuchen (2A und 2B) die Resistenz von Sämlingen die aus Kreuzungen mit anfälligen Sorten stammen. Im versuch 1A (1978) wurden Augenstecklinge von 9 Sorten in 8 Wiederholungen im Gewächshaus ausgepflanzt. Der Kompost John Innes Nr. 2 wurde mit 40 Eiern/g vonG. pallida (Pa 2/3) inokuliert. Nach 11 Wochen wurden die Zysten ausgezählt und als Prozent der Zysten auf Pentland Crown (% Anfälligkeit) ausgedrückt (siehe Tabelle 1, erste Reihe und statistische Verrechnung in Tabelle 2a) Im Versuch 1B (1982) wurden 25 Sorten in fünf Wiederholungen in geschlossenen Behältern mit 4 verschiedenen Inokulumdichten geprüft: 1500, 2000, 2500 und 3000 Eier Behälter. Sieben Wochen später wurden die Zysten gezählt und als % Anfälligkeit, basierend auf den durchschnittlichen Zystenzahlen der 4 Inokulumdichten (Tab. 1, statistische Verrechnung in Tabelle 2b) ausgedrückt. Im Versuch 1 C (1983) wurden 22 Sorten bei einer Inokulumdichte von 3500 Eiern/Behälter geprüft. Die Ergebnisse zeigt Tabelle 1 und die Statistik Tabelle 2c. In Tabelle 1 sind die Sorten in absteigender Reihenfolge angegeben, beginnend mit P. Javelin, die die höchste Zystenzahl aufwies. Fünf der in Tabelle 1 angegebenen 36 Sorten wurden in allen drei Prüfungen verwendet: P. Javelin, Désirée, M. Piper, Croft und P. Crown. Tabelle 3 zeigt die Varianzanalyse der fünf Sorten und für drei Jahre. Die in den Tabellen 2a, 2b und 2c aufgeführten Analysen zeigen dass signifikante Unterschiede (P〈0,001) im Hinblick auf die Zystenbildung zwischen den Sorten bestehen. Die Analyse in Tabelle 3 veranschaulicht dass die signifikanten Unterschiede in bezug auf die Zahl der gebildeten Zysten auf die Haupteinflüsse (Jahre, Sorten) zurükzuführen ist. Im ersten Sämlingstest (2A) wurde die Resistenz von Nachkommenschaften eines North Carolina 2-Kreuzungsprogrammes untersucht, bei dem elf gegenG. pallida resistente Klone mit sieben anfälligen gekreuzt wurden. Tabelle 4 zeigt die durchschnittlichen Zystenzahlen für die Nachkommenschaften der anfälligen Sorten und in Tabelle 5 ist die statistische Verrechnung aufgeführt. Die Verteilung des allgemeinen Kombinationsfähigkeitseffektes (Tab. 5) zeigt dass die anfälligen Eltern regelmässig, aber mit unterschiedlichem Ausmass zum generellen, inherenten Resistenzgrad gegen Kartoffelzystennematoden in der Nachkommenschaft beitragen. Im zweiten Sämlingstest (2B) wurde die Resistenz gegenG. pallida in 4 Nachkommenschaften anfälliger Eltern untersucht. Diese wurden in 5×5×4,5 cm Plastiktöpfen ‘Plant Pak’ in John Innes Nr. 2 Kompost, inokuliert mit 40 Eiern/g vonG. pallida, untersucht. 24 Einzelsämlinge wurden in jedem von 4 Blöcken randomisiert, Abb. 1 gibt die nach neun Wochen ausgezählten sichtbaren Zystenzahlen wieder. Das zeigt dass in den 4 Nachkommenschaften eine Abstufung der Anfälligkeit vorhanden ist. Die Ergebnisse der fünf Versuche zeigen dass zwischen den ursprünglich als anfällig angesehenen Sorten Unterschiede im Ausmass der Zystenproduktion bestehen. Diese Unterschiede stellen sowohl phänotypische als auch genotypische Variationen dar, die vorher beiSolanum tuberosum ssp.tuberosum nicht deutlich aufgezeigt waren. Diese Unterschiede können auf verschiedenen Faktoren des Phänotyps, ausser dem Resistenzmechanismus an sich, beruhen; im Zusammenhang mit einem Züchtungsprogramm ist aber am wichtigsten dass sie eine vererbbare Komponente haben, die zur Beschleunigung der phänotypischen Ausprägung der Resistenz beitragen kann.
    Abstract: Résumé Les variations de taux de multiplication des nématodes à kyste de la pomme de terre pour des variétés sensibles ont déjà été brièvement relatées. Des essais conduits au Scottish Crop Research Institute et les données de tests de routine dans le programme de sélection montrent que des différences phénotypiques et génotypiques existent entre clones, en ce qui concerne la résistance du nématode à kyste. Les études présentées concernent les variétés représentatives du groupeSolanum tuberosum ssp.tuberosum pour leur variation de sensibilité auGlobodera pallida. Des variétés généralement connues pour leur sensibilité auG. pallida (Pa2/3) sont expérimentées et mentionnées dans le tableau 1. Cinq essais sont réalisés. Les 3 premiers (1A, 1B et 1C) concernant la résistance des clones à partir des plantes issues de tubercules tandis que les deux autres (2A et 2B) se rapportent à la résistance de descendants issus de plantules provenant de croisements avec des variétés sensibles. Dans l'essai 1A (1978), des oeilletons de neuf variétés sont plantés en serre, à raison de 8 répétitions par variété. Le compost John Innes No 2 est inoculé avec 40 oeufs/g deG. pallida (Pa2/3). Les comptages de kystes après 11 semaines, exprimés en pourcentage du nombre de kystes sur Pentland Crown (% sensibilité) sont présentés dans la première colonne du tableau 1 et l'analyse statistique figure dans le tableau 2a. L'essai 1B (1982) comporte 25 variétés répétées cinq fois, en containers clos, et inoculées à 4 niveaux: 1500, 2000, 2500 et 3000 oeufs par container. Les comptages de kystes après 7 semaines sont présentés dans le tableau 1 en pourcentage de sensibilité sur la base des comptages moyens de kystes pour les 4 niveaux d'inoculum et l'analyse dans le tableau 2b. L'essai 1 C (1983) comporte 22 variétés, également en containers clos, maís avec un seul niveau d'inoculum: 3500 oeufs par container. Les résultats sont présentés dans le tableau 1 et l'analyse dans le tableau 2c. Les variétés présentées dans le tableau 1 sont classées par ordre décroissant avec comme première variété P. Javelin, qui produit le plus grand nombre de kystes. Pour les 36 variétés présentées dans le tableau 1, tous les test ont été réalisés sur cinq d'entre elles: P. Javelin, Désirée, M. Piper, Croft et P. Crown. L'arrachage de variance pour les 3 années et les cinq variétés est indiquée dans le tableau 3. Les analyses dans les tableaux 2a, 2b et 2c démontrent que des différences significatives (P〈0,001) existent entre les variétés, quant à la production de kystes. L'analyse dans le tableau 3 montre que la variation significative n'est expliquée que par les facteurs principaux (années et variétés), en ce qui concerne le nombre de kystes. Le premier test sur plantules met en évidence la résistance de la descendance par un programme de croisement North Carolina-2 entre 11 clônes résistants àG. pallida et 7 variétés sensibles. Un résumé des moyennes des kystes dans la descendance des variétés sensibles est indiqué dans le tableau 4 et l'analyse dans le tableau 5. Le part des effets combinés possibles, dans le tableau 5, montre que les parents sensibles contribuent de façon notable, mais à des degrés différents, aux niveaux de résistance propre au nématode pour chaque descendant. Le deuxième test sur plantules met en évidence la résistance àG. pallida pour quatre descendants de variétés sensibles. L'étude est faite dans des pots en plastique ‘plant pak’ de 5×5×4,5 cm remplis de compost John Innes No 2 inoculés avec 40 oeufs/g deG. pallida. 24 plantules individuelles sont placées au hasard dans chacun des quatre blocs. Les kistes visibles sont comptés après 9 semaines (figure 1); les résultats indiquent que différents niveaux de sensibilité existent pour les quatre descendants. Les résultats des cinq expériences démontrent qu'il y a des différences dans les niveaux de production de kystes pour des variétés prealablement classées comme étant d'égale sensibilité. Ces différences représentent des variations à la fois phénotypique et génotypique, au départ non clairement identifiées avecS. tuberosum ssp.tuberosum. Ces différences peuvent provenir de facteurs divers du phénotype autres que les mécanismes de résistance véritables, cependant il est important de considérer ce facteur héréditaire dans un programme de sélection ou il peut être utilisé pour accroître la résistance phénotypique.
    Notes: Summary Many cultivars of theSolanum tuberosum ssp.tuberosum group were investigated in a number of studies for their susceptibility toGlobodera pallida. Phenotypic and genotypic variation for this character is reported in material previously regarded as uniformly susceptible. The implications of these results are discussed in relation to potato breeding policy and nematological studies.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 101 (1995), S. 51-56 
    ISSN: 1573-8469
    Keywords: resistance ; potato breeding ; roots canister test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Fourteen cultivars generally regarded as uniformly susceptible toGlobodera pallida Pa 2/3 were assessed in plastic closed containers for degree of susceptibility and also for root and sprouting characteristics. The material was assessed by scoring degree of sprouting before planting and number of cysts and root growth at the end of experiment at intervals from the time of initial dormancy break through to prolific sprouting. Using covariate analyses, it was found that the degree of root development, particularly in the earlier assessments, significantly influenced the degree of cyst development and so the perceived levels of susceptibility/resistance. Having taken account of root growth characters, significant differences between the cultivars with regard to nematode multiplication were still evident. The implications of the results are discussed in relation to potato breeding and nematological studies.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 33 (1984), S. 583-586 
    ISSN: 1573-5060
    Keywords: Potatoes ; Solanum vernei ; Globodera pallida ; potato cyst-nematode ; resistance ; virulence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary This paper re-examines the data in support of recent findings by Turner et al. (1984), that selection for virulence in Globodera pallida takes place on Solanum vernei hybrids. It is concluded that there are a number of factors that must be taken into account and that these data must be interpreted with caution.
    Type of Medium: Electronic Resource
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