Browsing by Subject "Saline water"
Now showing items 1-2 of 2
Preliminary trials of combined Artemia rearing and salt production in earthen salt ponds in the Philippines - In G Persoone, P Sorgeloos, O Roels & E Jaspers (Eds.), The Brine Shrimp Artemia. Proceedings of the International Symposium on the brine shrimp Artemia salina, Corpus Christi, Texas, USA, August 20-23, 1979., 1980 - Universa PressThis paper describes trials at combining Artemia rearing with salt production during the dry season, in newly-constructed earthen salt ponds (reservoir, evaporation, concentration, and crystallization ponds, total area of 5,000 m2 at the Leganes, Iloilo Station of the SEAFDEC Aquaculture Department. Salt production by the solar method amounted to 250 sacks of slat over 30 days or an average of 8 sacks/day (1 sack = 50 kg). Two successful Artemia inoculations were undertaken in May and June 1979 respectively : in both cases the adult stage was reached after 1 week. The May population died off when the salinity was suddenly increased by salt addition. The June population gradually disappeared at the onset of the rainy season.
Conference paper- In G Persoone, P Sorgeloos, O Roels & E Jaspers (Eds.), The Brine Shrimp Artemia. Proceedings of the International Symposium on the brine shrimp Artemia salina, Corpus Christi, Texas, USA, August 20-23, 1979., 1980 - Universa PressThe objective of the inoculation described in this paper was to test the feasibility of culturing Artemia in man-made earthen salterns and of producing adults and cysts for use in aquaculture projects in the Philippines. San Francisco Bay (California, USA) Artemia were inoculated in two concrete tanks and in four earthen ponds which are part of a small local salt factory. It was found that Artemia can be grown (with continuous production of nauplii and cysts) year-round in covered concrete tanks and in open concrete tanks and earthen ponds during the dry season (February to June). Lethal effects of too high water temperatures (>35°C) to the cultures were anticipated by the use of green coconut fronds placed on the water surface alongside the walls of the tanks and the earthen dikes. Rice bran enriched with vitamins and traces of minerals appeared to be a good food for Artemia cultured in aerated concrete tanks; in the earthen salt ponds the brine shrimp grew well on the natural food present. Over a 3 month production period, 26 kg dry weight cysts and 150 kg live weight adults have been harvested from a total surface of 1.7 ha of salt ponds and brine tanks.