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| Registros recuperados: 5,192 | |
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| Yaqub, H.B.. |
| Three meals were formulated from the earthworm (Endrilus eugineae) and maggot (Musca domestica) and fish (Engraulis encrosicolus). These meals were evaluated as a potential replacement for fishmeal. This is because fishmeal could be very expensive at times. The three meals were used in feeding the catfish (Heterobranchus isopterus) fry for 30 days. The study was conducted in 1991 at the Institute of Renewable Natural Resources Farm, University of Science and Technology. Two replicates were done using four hapas in each replicate. Each hapa was stocked with 50 fry and fed. Those in the fourth hapa were not fed to ascertain the effect of supplementary feeding on the growth of the fish. Weight increment was found to be less in the fourth hapa than the... |
| Tipo: Journal Contribution |
Palavras-chave: Renewable natural resource; Catfish; Maggot; Earthworm; Fish meal; Fish meal; Http://aims.fao.org/aos/agrovoc/c_2925. |
| Ano: 1997 |
URL: http://hdl.handle.net/1834/1268 |
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| Avila Alonso, D.; Guimaraes Bermejo, M.; Cárdenas Ortiz, R.. |
| Se determinó la variación espacio-temporal de la biomasa de los grupos morfo-funcionales de macroalgas y su relación con las variables ambientales: temperatura, salinidad, oxígeno disuelto y precipitaciones en dos localidades (laguna y playa) de pastizales al Norte de Ciego de Ávila desde marzo de 2010 a febrero de 2011. Las colectas se realizaron utilizando marco cuadrado de 25 cm de lado y se tomaron 15 unidades de muestreo en cada sitio. Se determinaron cinco grupos morfo- funcionales: foliosas y globosas, coriáceas, filamentosas, corticadas y calcáreas articuladas, presentando variaciones espacio- temporales los dos últimos. La laguna tuvo menor diversidad algal (13 géneros) y mayor biomasa total determinado por el aporte de las calcáreas... |
| Tipo: Journal Contribution |
Palavras-chave: Biomass; Morphometric analysis; Algae; Seagrass; Environmental factors. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/4929 |
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| Vega Bolaños, L.; Castelo Baez, R.; Arias Verdes, J. A.; Sersa Espinosa, R.. |
| Los hidrocarburos aromáticos policíclicos (HAPs) son contaminantes alimentarios y su toxicidad se debe a que algunos de ellos son conocidos cancerígenos humanos, clasificados en el grupo dos de la Agencia Internacional de Investigación sobre el Cáncer (IARC). La determinación de los niveles de estas sustancias en los alimentos, especialmente en productos de la pesca, se ha incrementado en los últimos años por diversas causas. El objetivo de este estudio fue la determinación de los hidrocarburos aromáticos policíclicos (HAPs) en mejillones (Perna viridis) de la Bahía de Cienfuegos, 50 especímenes de mejillón con dimensiones entre 80-100 mm de largo antero-posterior de concha, se homogeneizaron y se tomó una muestra de 5 g de peso fresco, se trataron con... |
| Tipo: Journal Contribution |
Palavras-chave: Mussel culture; Oil potential; Aromatic hydrocarbons. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5707 |
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| Rambath-Parasram, V.. |
| Trinidad and Tobago has declared various maritime zones consistent with the provisions of the 1982 United Nations Convention on the Law of the Sea. The uses of these zones are extensive ranging from trade-related to recreational activities. Monitoring such a wide range of users is a challenge for many States and requires a comprehensive regulatory regime capable of empowering the relevant authorities with the means for its effective implementation. While the domestic legal and institutional framework governing marine environmental protection and conservation lags far behind that of the international arena, thereby rendering many of the applicable international laws non-operational, there are various institutions that are involved in protecting and... |
| Tipo: Other |
Palavras-chave: Legal aspects; Legislation; Legislation; Http://aims.fao.org/aos/agrovoc/c_4253. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/2912 |
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| Millán, A.M.. |
| El calamar gigante, Dosidicus gigas (D'Orbigny, 1835) es una especie semioceánica y nerítica endémica del Pacífico Oriental, distribuida desde el norte de California E.U.A (43º N) hasta el sur de Chile (20°S), incluyendo el Golfo de California. Habita aguas desde la superficie hasta 1000 metros de profundad. Particularmente dentro del Golfo de California (México), es considerado uno de los recursos pesqueros más importantes, sin embargo el manejo de la pesquería de éste cefalópodo enfrenta varias dificultades entre las que se encuentran: un corto ciclo de vida, tasa de crecimiento desigual y falta de caracteres morfométricos y/o merísticos debido a la extrema plasticidad morfológica. Con el fin de determinar si existe... |
| Tipo: Theses and Dissertations |
Palavras-chave: Genetic isolation; Cephalopod fisheries; Population genetics; Population genetics; Http://aims.fao.org/aos/agrovoc/c_34326. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3657 |
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| Almeida Rodríguez, M.; de Armas Vargas, Y.; Rojas López., L.. |
| La bahía de Matanzas es un ecosistema complejo que posee como uno de sus principales problemas el vertido de residuales líquidos de origen industrial y urbano. La deposición de vertidos puede producir una contaminación permanente de los fondos de la bahía que inducen alteraciones en las cadenas tróficas afectando a plantas y animales. Las playas ubicadas dentro de la bahía se encuentran influenciadas por el aporte directo y continuo de contaminantes de origen orgánico e inorgánico los cuales afectan la calidad de sus sedimentos. El objetivo de este trabajo es analizar la composición química de los sedimentos superficiales sumergidos de las principales playas más visitadas por la población a través de la evaluación de indicadores que tienen un mayor peso en... |
| Tipo: Preprint |
Palavras-chave: Bays; Sample contamination; Beaches; Beaches; Http://aims.fao.org/aos/agrovoc/c_850. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3642 |
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| Brito, C.; Carvalho, I.; Reiner, F.. |
| S. Tomé and Príncipe archipelago has been reported as a possible breeding ground for humpback whales (Megaptera novaeangliae) since the whaling period. More recently, the sightings of humpbacks whales have become more frequent off the S. Tomé Island which may indicate a recovery of the populations or the whales returning to a former concentration area of the Southern Hemisphere population. Our objective was to study the occurrence of humpback whales group types and surface activities in this area. Between July 2002 and January 2003, a total of 110 boat-based surveys were conducted around the S. Tomé Island and Rolas Island. When we sighted the animals, recordings of GPS positions, group size, group composition and activity were made. Single whales and... |
| Tipo: Conference Material |
Palavras-chave: Aquatic mammals. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/717 |
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| Aduayom, M.A.. |
| A l 'arrivée des premiers Européens sur la Côte des Esclaves , rien ne prédestinait Lomé, le Bey Beach des Anglais, à devenir une capitale. Pour le RP Borghero, en 1963, le site de l actuelle ville de Lomé était une plage infestée de brigands et Yves Marguerat (1993b :18) à raison de souligner que jusqu au troisième quart du XIXè siècle, la partie du littoral où s élève aujourd hui Lomé était la zone la moins active et la plus hostile de la côte... . e |
| Tipo: Proceedings Paper |
Palavras-chave: Socioeconomic aspects. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/1191 |
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| Njuguna, H.; Romero, J.R.; Khisa, P.. |
| The catchment of Winam Gulf in Kenya supports a population of 4.5 million inhabitants. Much of the population practices subsistence agriculture in the catchment that has led to high rates of sediment erosion and ultimately highly turbid rivers. Hence, every year during the two equatorial wet seasons, large quantities of catchment sediments are deposited into Winam Gulf. In Apr.-May 2005 an intensive field investigation was undertaken to determine the exchange dynamics between the northeastern offshore waters of Lake Victoria and Winam Gulf through Rusinga Channel. One of the outcomes of this scientific study was the validation of ELCOM (Estuary, Lake and Coastal Ocean Model), a three-dimensional (3D) hydrodynamics model, over Rusinga Channel and Winam... |
| Tipo: Proceedings Paper |
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| Ano: 2006 |
URL: http://hdl.handle.net/1834/2508 |
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| Yao, K.M.; Kouassi, A.M.; Kouassi, B.; Koné, Y.J.-M.; Inza, B.; Soro, B.M.; Trokourey, A.. |
| Cette étude est la première à estimer la vitesse de la croissance annuelle des concentrations en ions phosphates dans les eaux de la lagune Ebrié. Elle donne des résultats jusque-là inconnus des tendances annuelles de la qualité des eaux estuariennes en ce qui concerne le phosphore.Bien qu'il soit trop tôt de déduire avec certitude ces tendances sur la base de quatre années de mesure,il apparaît évident que l'utilisation des engrais agricoles est en train de s'intensifier dans le bassin versant de la lagune Ebrié avec pour conséquences une augmentation significative de la vitesse de croissance des phosphates dans la zone estuarienne de la lagune Ebrié. Dans le contexte actuel de la gestion rationnelle de la qualité des eaux côtières menacées par... |
| Tipo: Journal Contribution |
Palavras-chave: Water pollution; Estuarine chemistry. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/5818 |
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| Gourene, G.; Provost, P.; Teugels, G.G.; Fermon, Y.; Bailly, N.; Meunier, F.; Abban, E.K.. |
| Renewable natural resources (RNR) are a major source of socio-economic development potential in all developing countries, if they can be conserved, developed and sustainably exploited. For strategic conservation and sustainable exploitation strategies to be implemented, a knowledge of biodiversity at various levels within these RNR has to be investigated and documented in an internationally accepted manner, and preferably as close as possible to the habitat of the resources. However, human and material resources available in developing countries are currently neither sufficiently trained nor sufficient to undertake the appropriate studies. Meanwhile, various forces continue to deplete RNR and their inherent biodiversity. An attractive approach towards... |
| Tipo: Conference Material |
Palavras-chave: Biodiversity. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/456 |
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| Mailu, G.M.; Kiai, S.P.M.. |
| Kenya has a growing population projected to increase to 34 million people by the turn of the century. Though the country is undergoing industrial transformation, agriculture remains the mainstay of the economy. The country has an area of about 587 900 km2 of which 576 000 km2 is land surface. 88% of the land surface is classified as arid and semi-arid lands (ASALs) and the remaining 12% forms the medium and high agricultural potential land. This classification is based mainly on the moisture index as indicated by average annual rainfall and evapotranspiration. The Great Rift Valley running north/south influences and determines the drainage pattern so that from the flanks of the Rift Valley, water flows westwards to Lake Victoria and eastwards to the Indian... |
| Tipo: Working Paper |
Palavras-chave: Wetlands; Agricultural development; Http://aims.fao.org/aos/agrovoc/c_199. |
| Ano: 1995 |
URL: http://hdl.handle.net/1834/387 |
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| Muhando, C.A.. |
| Coral reefs play a crucial role to the well-being of coastal communities in Tanzania. Coastal fisheries, ecotourism and coastal land protection are, to some extent, sustained by coral reefs. A variety of fish species, spiny lobsters, octopus, sea cucumbers, clams, oysters and turtles form the basis of harvestable reef resources. More than 30% of marine fish landings are harvested on or adjacent to coral reef environment. Coral reefs also support offshore fisheries by providing feeding and nursery grounds for some oceanic (pelagic) fish stocks. Tourism based on coral reef ecosystems is peaking up, creating new opportunities for employment and substantial amounts of income for the people of Tanzania. |
| Tipo: Report |
Palavras-chave: Coral reefs; Socioeconomic development; Http://aims.fao.org/aos/agrovoc/c_29966. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/490 |
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| Regalado, E.L.; Mendiola, J.; Laguna, A.; Nogueiras, C.; Thomas, O.P.. |
| A method involving flash chromatography, semi-preparative phenylhexyl RP HPLC-DAD-ELSD combined with analytic polar-RP HPLC-DAD, was applied to separate and purify six highly nitrogenated bases and a bicyclic amidine alkaloid, the major components of the marine sponge Niphates digitalis. Their structures were identified as 1,8-diazabicyclo[5.4.0]undec-7- ene (1), deoxycytidine (2), phenylalanine (3), adenosine (4), deoxyguanosine (5), adenine (6) and thymidine (7) on the basis of spectroscopic data analyses. This is the first report of these compounds in a marine sponge belonging to the Niphates genus and the first evidence of the presence of 1 from a natural source. |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Cytotoxicity; Cytotoxicity; Sponges; Http://aims.fao.org/aos/agrovoc/c_34251; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3860 |
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| Everett, G.V.. |
| In response to the introduction of Exclusive Economic Zones (EEZ) and at the time when the UN Convention of the Law of the Sea (UNCLOS) was about to be adopted, FAO organised in 1981 in Rome an Expert Consultation on Monitoring, Control and Surveillance for Fisheries Management. Experts from 12 major fishing nations participated and the recommendations of the Consultation were later adopted by the FAO's Committee on Fisheries, forming since then the basic policy of the Organisation with regard to MCS. |
| Tipo: Report |
Palavras-chave: Fishery regulations; Monitoring; Http://aims.fao.org/aos/agrovoc/c_4911. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/817 |
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| Registros recuperados: 5,192 | |
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