TRANSPORT OF SHRIMP POSTLARVAE IN BAGS
From: ejidopesquero@hotmail.com
Sent: December 02, 2000
QUESTION:
We
are going to buy shrimp postlarvae.
There
is 800 km between the laboratory and our farm, we will
transport
postlarvae by plane, they will give us acclimated
postlarvae
at 4 ppt salinity. Can someone tell us what is the best way
to
pack postlarvae in plastic bags:
density?
feed?
travel
time?
temperature
acclimation
in pond?
Fernando
Campos
Acapulco,
Guerrero , México
***************
COMMENTS 1 :
As for the feed, we recommend that the bags contain
Artemia to avoid cannibalism.
They should be transported in a double bag at 18°C;
of course this can vary depending on the time that larvae spend in the
package. At lower temperatures, the animals become lethargic and their
metabolism slows down which means that they will eat less and there will be
less excrement that contaminates and absorbs O2. The bags should
be injected with pure oxygen till saturation. You should put the bags in a
box with dry ice and close them firmly. At this temperature they can travel
for sure 18-20 hours.
Aedrian Ortiz
Merida, Yucatan
E-mail: aedrianortiz@hotmail.com
***************
COMMENTS 2:
We ship L. vannamei PL-10's at 900-1000 per
liter in plastic bags (double lined for insurance) w/ 15 liters of seawater
at 18-19°C and 15 liters of oxygen (half full half empty). The seawater is
O2 saturated and around 50 live enriched Artemia nauplii are
packed per PL. Two of the above mentioned bags are fitted in one 80 liter isothermic
styrofoam box. You may wish to experiment adding an ammonium binding
agent and one gram of granulated active charcoal, although we have not found
this to be necessary. We have found this packaging to withstand easily 30h
of transport time w/ mortality well below 5% after acclimation at
destination.
Manoel Tavares