short
communication: larval rearing of chub, leuciscus cephalus (l.), using
decapsulated artemia as direct food
A.
Shiri Harzevili, D. De Charleroy, J. Auwerx, I. Vught, J. Van Slycken-2003
J.
Appl. Ichthyol., 19: 123-125
Abstract:
Little
is known about the larviculture of chub, Leuciscus cephalus (L.), an
endangered cyprinid species endemic to European flowing waters. The use of
decapsulated Artemia cysts as food for chub larviculture was investigated.
After 3-day feeding with the rotifer Brachionus calyciflorus, the larvae
were fed on different diets: (i) dried decapsulated Artemia cysts, (ii)
Artemia nauplii, (iii) rotifers for seven more days and then Daphnia
collected from a pond, and (iv) an artificial diet. After a 24-day rearing
period, the highest survival rate was obtained with the larvae receiving
decapsulated Artemia cysts. Feeding of the larvae with an artificial diet
resulted in a significantly lower survival rate compared with the other
groups. At the end of the experiment, the larvae fed on Artemia nauplii
yielded a significantly higher mean length compared with the other groups.
Feeding an artificial diet resulted in a significantly lower average weight
and mean length gain compared with the other groups.
(Fish
Culture Centre, Institute of Forestry and Game Management, Ministry of the
Flemish Community, Dwersbos 28, B-1630 Linkebeek, Belgium, e-mail: alireza.shiriharzevili@lin.vlaanderen.be)