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| Registros recuperados: 25 | |
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| Aparicio, B.. |
| Para producir larvas de peces con buenos rendimientos, se deben conocer los requerimientos nutricionales de la especie, particularmente en los primeros estadios larvarios. Además, se sabe que la nutrición de los reproductores influye directamente en la calidad de las larvas debido, principalmente, a la cantidad y calidad de lípidos que son transferidos desde la gónada hacia los huevos. El objetivo de este trabajo fue analizar la composición de lípidos en huevos, embriones y larvas de pez blanco de Pátzcuaro (Chirostoma estor estor) con el fin de establecer las bases de los requerimientos nutricionales de lípidos durante el desarrollo larvario del pez blanco. También se determinaron los ácidos grasos en tejidos de reproductores (cerebro, gónada, hígado,... |
| Tipo: Theses and Dissertations |
Palavras-chave: 1079; Lipids; Reproduction; Fish culture; Fish eggs; Embryos; Fish culture; Lipids; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4362; Http://aims.fao.org/aos/agrovoc/c_6507. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/3465 |
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| Ezenwa, B.I.; Alegbeleye, W.O.; Anyanwu, P.E.. |
| The first phase of the project (1978 –19850 on fish seed abundance in Nigerian coastal waters was completed and published in 1985 proceedings of Fisheries Society of Nigeria (FISON). The second phase (1986 –1989) explored further, breeding grounds, nursery and schooling areas and traditional fishing gears used by local fishermen in the collection of seeds. An assessment is made of the destructive effects of industrial pollutants, oil installations, erosion, modern coastal developments, and tides in the distribution and abundance of seeds within the estuaries, creeks lagoons coastal rivers and their tributaries. Analysis of data collected showed a drastic reduction of an estimated 100 million fish seeds, Ezenwa et al (1985) to 51.7 million at the end of... |
| Tipo: Report |
Palavras-chave: Fish culture; Seed production; Fish culture; Seed production; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_6937. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/2412 |
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| Aristizabal, E.O.. |
| The appearance, ossification and growth of cartilaginous structures of the mouth in early larval stages of laboratory reared red porgy Pagrus pagrus, were examined. At the time of mouth opening, red porgy larvae are equipped with the fundamental components of the oral cavity to allow the sucking motion for acquiring food. During the initial feeding stage, from day 5 after hatching (AH) to day 7 AH, the hyoid and lower branchial archs were completed, and the head length and other structural elements, like the ceratohyal-epihyal cartilage, increased rapidly. These events intensified sucking mechanisms by increasing the amount of ingested rotifers. After day 13 AH, the presence of the bony premaxilla and angular, the ossification of the Meckels cartilage and... |
| Tipo: Journal Contribution |
Palavras-chave: Marine aquaculture; Fish culture; Fish larvae; Osteology; Fish culture; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1560 |
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| Vega-Villasante, F.; Cortés-Lara, M.del C.; Zúñiga-Medina, L.M.; Jaime-Ceballos, B.; Galindo-López, J.; Basto-Rosales, M.E.R.; Nolasco-Soria, H.. |
| There is a global trend towards intensification of aquaculture-based systems, however a large portion of world production from aquaculture is still in small-scale "rural type" and extensive systems. The term “rural aquaculture” has been used to distinguish, from other production systems, the culture of aquatic organisms by families through extensive or semiintensive systems, for home consumption or partial marketing. Studies conducted in various regions of Mexico suggested that rural aquaculture of tilapia could be an alternative activity, able to dampen the demand and reduce pressure on natural resources. This paper analyzes the culture of tilapia considering the minimum management, with low fish density and low water exchange with the intention to... |
| Tipo: Journal Contribution |
Palavras-chave: Small scale aquaculture; Fish culture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3520 |
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| Isla Molleda, M.. |
| Recirculating aquaculture systems (RAS) for fish culture have been used for more than three decades. The interest in RAS is due to their have advantages such as greatly reduced land and water requirements in places where the water resources are limited; but the RAS have also disadvantages like the deterioration of the water quality if the water treatment processes within the system are not controlled properly. The water quality problems in RAS were associated with low DO and high fish waste metabolite levels in the culture water. The objective of this study was to compare water quality in a RAS with water quality in a Limited Reuse System (LRS) for Arctic charr culture taking into account the oxygen demands of the fish; the metabolites production by the... |
| Tipo: Preprint |
Palavras-chave: Water quality; Fish culture; Water quality; Fish culture; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/3102 |
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| Aristizabal, E.O.. |
| Spontaneous spawning of red porgy was achieved in captivity by using photoperiod and temperature control systems along the year. During a four-month reproduction period females released in average about 0.2 times their own body weight in oocytes with an energy content of 5.71 J mg-1 wet weight. A total of 28.8 x 106 eggs and approximately 200 g of viable eggs (wet weight) per female kg were obtained. The eggs and larvae quality in terms of hatching and larval survival rates experienced a significant variation during the spawning season ranging between 0%-92% and 0.3%-33.2% respectively. Comments in reference to the probable causes of these variations and the need of carrying on with this line of research are presented. |
| Tipo: Journal Contribution |
Palavras-chave: Fish culture; Marine aquaculture; Spawning seasons; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1569 |
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| Ndong, D.; Chen, Yu Yuan; Lin, Yu Hung; Baskaralingam, V.; Chen, Jiann Chu. |
| Mozambique tilapia Oreochromis mossambicus acclimated to 27 °C were then held at 19, 23, 27 (control), 31 and 35 °C, and were examined for non-specific cellular and humoral responses after 12–96 h. Total leucocyte count decreased significantly when fish were transferred to 19 and 23 °C after 48 and 96 h, and when transferred to 35 °C over 12–96 h, respectively. Respiratory burst decreased significantly when fish were transferred to 19, 31 and 35 °C over 24–96 h, whereas phagocytic activity and phagocytic index decreased significantly when fish were transferred to low temperatures (19 and 23 °C) and high temperatures (31 and 35 °C) over 12–96 h. Lysozyme activity decreased significantly when fish were transferred to 19 °C after 12–96 h, but increased... |
| Tipo: Journal Contribution |
Palavras-chave: Immunology; Fish culture; Fish diseases; Temperature effects; Aquaculture; Biological stress; Immunology; Fish culture; Aquaculture; Fish diseases; Http://aims.fao.org/aos/agrovoc/c_3808; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_2920. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/2614 |
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| Anyanwu, P.E.; Awa, J.N.. |
| Polyculture trial of selected cultivable fin fishes was conducted at the Institute’s experimental fish farm Ikoyi, Lagos from April 1983 to January 1984. The species, Mugil spp; Tilapia spp; Hemichromis fasciatus and Elops lacerta gave a total annual production range of 1219 kg to 1441 kg per hectare (extrapolated). Tilapia species had the highest growth potential constituting 80% of the total harvest. Supplementary diet used was food left over (waste) from selected big hotels in Lagos. Elops lacerta (predator) recorded the highest average body weight of 415.88g while the lowest weight 62.14g, was recorded for Mugil spp. Tilapia spp and Hemichromis fasciatus had average body weights of 72.5g and 6.7 0g respectively. |
| Tipo: Report |
Palavras-chave: Fish culture; Polyculture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/2390 |
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| Nwadukwe, F.O.; Ayinla, O.A.. |
| Weekly spawn and hatching rates of Clarias gariepinus and Heterbranchus longifilis were determined in earthen ponds during the rainy and dry seasons. There was a significant increase in spawn weight from the 2nd to the 7th week after stocking C. gariepinus brood fish (p<0.05). In H. longifilis; the increase in spawn weight was significant from the 4th to the 9th weeks (P<0.05). A positive correlation was found between spawn weight and female broodfish weight from the 4th to the 9th weeks for both species. The best hatching rates were obtained during the 7th week for C. gariepinus, and in the 8th week for H. longifilis. Rainy season trials gave better results in both species than in the dry season, while only C. gariepinus produced hatchable... |
| Tipo: Report |
Palavras-chave: Fish culture; Fish culture; Http://aims.fao.org/aos/agrovoc/c_2918. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/2205 |
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| Registros recuperados: 25 | |
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