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Tag: Guatemala

Hatchery-produced tilapia seed in Guatemala – Video

Credit video: Manuel Cano Alfaro (Guatemala) Review: Abdel Rahman El Gamal  and   Manuel Cano Alfaro The video has been taken in one of the few tilapia hatcheries in Guatemala. This particular hatchery provides tilapia fingerlings in the coastal area. The video shows the hatchery facilities including earthen ponds, metal tanks and concrete tanks. The sampling of …

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Permanent link to this article: https://fishconsult.org/?p=10420

Use of Lake Amatitlan water hyacinth in the production of cooking gas in Guatemala

Credit: Manuel Cano Alfaro (Guatemala) The excessive growth of water hyacinth (Eichornia crassipes) in Lake Lake Amatitlan, Guatemala which intended to remove the nutrients load in the lake has stimulated the idea of utilizing a part of water hyacinth in energy production whereas collected plants are placed in a bio-digester in a process whose end product …

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Permanent link to this article: https://fishconsult.org/?p=9979

Eutrophication of Lake Amatitlan in Guatemala – Video

Credit video: Manuel Cano Alfaro (Guatemala) Review: Abdel Rahman El Gamal This video shows the algal scum on the water surface of Lake Amatitlan in Guatemala. The lake receives great amount of the sewage from Guatemala City through different tributaries turning into a completely eutrophic body of water. The heavy nutrients load as represented in phosphorus and …

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Permanent link to this article: https://fishconsult.org/?p=9973

Cleaning the beaches of Lake Amatitlan (Guatemala) (in English/Spanish)

Credit: Manuel Cano Alfaro (Guatemala) The photos show the Personnel Division of the Lake Cleaning, Environmental Education and Interagency Relations work together on Coastal Cleanup work. Se fotos mostrar la Personal de la División de Limpieza del Lago Amatitlan, Educación Ambiental y Relaciones Interinstitucionales trabajan conjuntamente en trabajos de Limpieza de Playas.    

Permanent link to this article: https://fishconsult.org/?p=9880

Production of briquette from water hyacinth in Guatemala

Credit: Manuel Cano Alfaro (Guatemala) This photo shows the utilization of water hyacinth (Eichornia crassipes) as a briquette. The caloric merit of the produced briquette (5048 cal/g) has been found high enough to justify its replacing to firewood. In order to produce this briquette, water hyacinth is milled and compacted under pressure.    

Permanent link to this article: https://fishconsult.org/?p=9867

Use of water hyacinth, Eichornia crassipes as a bio-fence in Lake Amatitlan, Guatemala

Credit: Manuel Cano Alfaro (Guatemala) The three photos show the formation of floating bio-fence (biobardas) in Lake Amatitlan (Guatemala) using water hyacinth, Eichornia crassipes to retain floating solid wastes entering the Lake from the Villalobos River.    

Permanent link to this article: https://fishconsult.org/?p=9803

Grow-out of tilapia in Lake Amatitlán (Guatemala)

Credit: Manuel Cano Alfaro (Guatemala) The photo shows a grow-out tank for tilapia located in Lake Amatitlán, Guatemala. The lake is one of four major lakes in Guatemala. The water supply to tilapia tank is pumped from a depth then pass through a filter of volcanic rocks and geotextile to reduce its ammonia content before …

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Permanent link to this article: https://fishconsult.org/?p=9775

Great Egret, Ardea alba (Description – habitats – feeding – reproduction – threats) – Video

Video credit: Manuel Cano Alfaro (Guatemala) Review: Abdel Rahman El Gamal This video was taken at Lake Peten Itzá, Guatemala Introduction: Great Egret, Ardea alba (ex Casmerodius albus) has several common names including common egret, large Egret, White Egret, Large Egret, Great White Egret, and Great American Egret. Description: Great Egret adults are entirely white bird …

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Permanent link to this article: https://fishconsult.org/?p=9762

Artisanal fishery in Lake Peten Itzá (Guatemala)

Credit: Manuel Cano Alfaro (Guatemala) The photo shows a typical artisanal fishery practice in Lake Peten Itzá, Guatemala. The fishing crew involves two fishermen who both cooperate in setting the fishing seine. Afterwards, a fisherman of the two who stays in the fishing boat (not shown in the photo) beats water surface using a pole to …

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Permanent link to this article: https://fishconsult.org/?p=9738

Production of all-male Nile tilapia (Oreochromis niloticus) through sex reversal in Guatemala

Credit: Manuel Cano Alfaro (Guatemala) The first photo shows people collecting the swim-up fry of Nile tilapia (Oreochromis niloticus) from the spawning tanks. Tilapia broodstock are stocked at the ratio of four females for each male. The collected fry are passed to the sex reversal unit which is shown in the second photo. The sex reversal …

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Permanent link to this article: https://fishconsult.org/?p=9549

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