pond with a nice deep orange color (typical of Artemia fed on Dunaliella salina) . Because the Artemia are producing the cysts, to follow the water path is one. Culture of Artemia salina by use of Tetraselmis tetrathele  crustacean culture; survie; algae/ croissance; elevage de crustaces; survival. artemia salina.
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Frank Pais 2, cysts and biomass. Frank Pais 1, cysts and biomass. We will study the actual states and try to improve them according to the local conditions. Some inexpensive points either in the lab or on the field can be taken care of rapidly. The harvest is increased up to 5 Kgr per day, and the egg processing is improved to be done in one hour. To know if a pond has a potentiality of producing cyst the first parameter to check is the presence of gravid female.
Their presence will order us to do everything to enhance their living conditions.
Gravid females, juvenile and lots of nauplii have been observed in the north east side of the N o 35 pond with a nice deep orange color typical of Artemia fed on Dunaliella salina. They look bloody red in the west part and in the next following ponds. On the north east part of the pond slina, the water has a lower cra. In the south west part of the pond 35, shrimps are scarce but are continuously flushed away through the gate to the next pond.
Those shrimps have the hemoglobin red color typical of the good cyst producers. The gradient of salinity and food exists.
Shrimps living in the lowest salinity areas are ovoviviparous, have maximum of food. In the highest salinity areas the algae is rare and the shrimp are spawning cysts. By a thorough check of the edges of the ponds 35, 36, 37, 38 and their channels, we were able to record many spots where the eggs are concentrated or trapped naturally south and west banks mainly. Because the Artemia are producing the cysts, to follow the water path is one basic of the salt pond cyst harvest.
We do not control the flow of the water in the salt flats: If the flow varies so does the salinity. On February the 3 rdwe checked salinity around the ponds:. The numbers recorded in the pond 35 are much lower to the ones mentioned by B. The difference is more surprising, if we consider that February is a dry season month, and August a rainy one. One gives us as explanation that the pumping was speed up for evaporation ponds technical reason.
This is a perfect example that the water management conditions changed without any warning to the Artemia team. Strong winds disperse the thick foams then the eggs are blown away and lost in the dirt.
In the near future this will save much time for the team in charge of the harvest.
Because of the actual impossibility to control the flow of the water. Traps with nets can be easily installed at the gate of the ponds, they will be checked twice a day. The water level is not constant at the gates. The traps will be set with floats in order to have their lower side just under the water level.
They are build to retain most of the cysts after their entrance, even if the wind shifts. Up now, we are sure that in the conditions of our observations: In the west part the females shift to the egg production. We do not know if the eggs seen in the ponds 36 and 37 are produced in those ponds or are brought in by the flow.
If both cases happened what are their relative importance? We propose to control the water flow. To raise the production of cysts we need to be able to control the flow of the ponds where the cysts are found: One of the best way to control the flow of the pond 35 is to shunt the pond allowing the salt company to keep producing with the minimum trouble.
Having a parallel flow is possible through: In both cases the flow of the pond must be the most regular as possible. The pond intakes must be multiplicated, and exhausts must be open on the opposite side to allow a regular flow.
The Artemia team of Frank Pais was processing the eggs in small Plexiglass jars without any bottom evacuation see background Picture 12this method, if good enough for few hundred grams of cysts, is totally unadapted to the processing of the harvest we had the first week of February. In order to save time and efforts, it has been necessary to optimize the different steps of the cyst cleaning to reach 5 Kgr.
The main aspects are to follow a standard procedure. The first experimental pond is fed with the water coming directly out of the pipe line. The entrance salinity is about 80 to gr. The water can flow to the next and the third pond through a gate. Both were not really productive up to that time.
We recorded, gr. One of the major constraint is that the waters have to be drained in the main stream of the brine of the salt flats, and the Frank Pais salinas managers were very concerned about the pollution of their production, by algae and fertilizer.
Because of the moderate surfaces of these ponds and their proximity of all the sources of water available from 80 to gr. The control of the flow of feed is determinant biomass has to be fed at the right level to epure the algae off. The area of Frank Pais 1 is dedicated to the biomass and the cyst production, side by side. Feed and high salinity water are needed. We introduce the concept of algae ponds and to reserve the largest pond as a high salinity stock water.
The 11 ponds of Frank Pais 1 have been build to grow biomass, and to produce cysts on semi intensive way with algae blooms.
Cria de artemia salina
They can have more than 60 cm of water depth. There are in connection with the pond n o 11 for the water supply through a canal, the water can be transfered from one pond to the other through monks.
The overflow of the water is wasted. With fertilizers, semi intensive pond can produce biomass but they have to be checked and managed as shrimp ponds. The water has to move, in the ponds, and through arte,ia ponds. The ponds need water exchanges and circulations, if salinz the chances of a heavy reduction of the bottoms are major, the ponds must be treated as the one of a shrimp farm. Because the management has to be understood as for a farm, the people must be on artemai every day, for cleaning and maintenance, and harvest.
An easy way to xrtemia the harvest is to use air lift automatic harvesters. The harvest will have to be send to the freezers very fast. The distance of the ponds from Frank Pais laboratory and the absence of transportation for the technicians is an important drawback. The need of a bicycle with a trailer is a minimum.
Due to the time needed d set a bloom, it artemiz better saliha prepare algae ponds aside of the biomass production, to seed them when necessary with the quantity and quality of algae needed. The pond N o 1 is the largest. It can be used as evaporator for the farm to provide the quality and the quantity of water needed.
For the rainy season the monks will have to be set so the top rainy water is drained out of the ponds. Their size and depth are suitable for it.
Catwalks must be installed to be able to work further in than just the immediate edge of the ponds, air lifts, analysis…. Electricity for a little pump to move the blooms, and for aerators is needed, they will be sheltered in a small hut with the other farm tools, pails, nets…, eventually the technician in case of a heavy rain.
The control of papalote can be done with a good gate, equipped with the right mesh inferior to the size of the eggs of the papalote. In operation it will have to be checked permanently. Here the production of cysts should be attained in the most controlled environment.
The sizes of the ponds make the management feasible. By the control of the salinity, and the feed dw, by the presence of the biomass ponds, some ponds, out of the 11, should be set for cyst production. Due to the incredible amount of faeces excreted by the brine shrimp, aeration to artemiaa reduction, and bottom flushing must be a routine.
The level of water must be high, i. In the past xalina years they experienced losses of salt production due to algae blooms.
Cria de artemia salina |
They explained us the situation as is:. The sea water, for all the salt flats, is pumped from one edge at the very end of the Guantanamo bay. The rains wash down the field fertilizers. In the ponds the mineral salts are concentrated and this generates algae blooms.
A worsening factor is the rich organic matter wastes released in the bay by the sugar cane factories.
The addition of 3 ponds helped to speed up the water, if that solution lowered the problem it did not cure it. Here to the predator, the papalote is everywhere and its presence might not lead to a successful trial.