... Organization of the United Nations
Rome, 1996
The designations employed and the presentation of material in this publication do not
imply the expression of any opinion whatsoever on the part of the ...
Applications for such permission, with a statement of the purpose and extent of the
reproduction, should be addressed to the Director, Information Division, Food an...
... inoculation hood (right).
A common source of contamination is the condensation in the airlines which harbor
ciliates. For this reason, airlines should be kept dry and both the air and the carbon ... vary considerably according to the culture
conditions. For example the effect of the composition of the culture medium on the
proximate composition of various species of mi...
... of the rotifers are killed as well. The
concentration of the disinfection products differs according to their toxicity and the initial
condition of the rotifers. Orientating concentrations ... the overhead tank only contains water the flow rate can be
adjusted without danger of clogging. The dimensions of the tank should be made as such
that the complete content of th...
... However, with the expansion of aquaculture production in the 1970’s,
the demand for Artemia cysts soon exceeded the offer and prices rose exponentially,
turning Artemia into a bottleneck for the ... parthenogenetic Artemia.
Age at first reproduction is a key factor determining the population growth rate, and the
rate of colonisation of new environments with limited nutrie...
... solution. During overnight
dehydration (with aeration to maintain a homogeneous suspension) cysts usually release
over 80% of their cellular water, and upon interruption of the aeration, the ... below expectation, the dose should be modified (raised
or lowered) by altering the concentration and/or the incubation time; solutions in the
range 1 to 10% and incubation times in t...
... composition of Artemia
nauplii, even if they are enriched by the same person or by various persons (Table 4.3.4.).
For example, there was no reduction in variability when only one person handled the ... boosting with DHA
during the early larval stages has to be considered with extreme care since the
requirements of the larvae may not only depend upon their ontogenetic stag...
...
4.5. Pond production
4.5.1. Description of the different Artemia habitats
4.5.2. Site selection
4.5.3. Pond adaptation
4.5.4. Pond preparation
4.5.5. Artemia inoculation
4.5.6. Monitoring ... ingestion rate
and/or assimilation: including the quality and quantity of the food offered, the
developmental stage of the larvae, and the culture conditions. More detailed inform...
... is concentrated in one pond. All other ponds are re-filled
with sea water, which once again is evaporated and concentrated in a second pond. This
process is repeated until a series of ponds ...
4.5. Pond production
4.5.1. Description of the different Artemia habitats
4.5.2. Site selection
4.5.3. Pond adaptation
4.5.4. Pond preparation
4.5.5. Artemia inoculation
4.5.6. Monitorin...
...
transport the harvested zooplankton in 50 l containers. Under these conditions the
survival of the zooplankton depends on the amount of oxygen dissolved in the remaining
water. At a concentration ... considerably with the survival of these
fragile organisms. If it is impossible to convey the material continuously along
distribution pipes to the place of consumption,...
... extinguished
population after unfavourable seasonal conditions.
6.1.2. Nutritional value of Daphnia
The nutritional value of Daphnia depends strongly on the chemical composition of their
food source. ... from the incubation suspension by pouring the content of the incubation tank
on a submerged 35 µm sieve. After washing with pure preheated seawater the
trochophora larva...