Effects of egg size
differences on juvenile weight between and within lots in rainbow trout
Oncorhynchus mykiss
J.M.
Blanc-2002
Journal of the World Aquaculture Society, 33(3):
278-286 (from Current Contents)
Abstract:
Effects of egg size on weight and growth of juvenile
rainbow trout Oncorhynchus mykiss were investigated within and between lots,
using a genetic variant with "golden" phenotype as a marker.
Analysis of between-lots variation corroborated earlier findings that egg
weight influence on the juvenile body weight disappears after a few months
of life. In contrast, within-lot effects of egg size were greater and
persisted over a longer time. Egg size did not affect subsequent survival or
specific growth of the juvenile trout. The genetic marker caused some
detrimental pleiotropic effects on eyed egg yield and juvenile body weight,
but not on juvenile survival or specific growth.
(INRA; Unit Rech & Hydrobiol; F-64310 St Pee Sur Nivelle; France)