PARENTAL INFLUENCE ON EARLY DEVELOPMENT IN
THE EUROPEAN SEA BASS
E.
Saillant, B. Chatain, A. Fostier, C. Przybyla, C. Fauvel-2001
Journal of Fish Biology, 58: 1585-1600
Abstract:
Fertilization, survival during incubation and
hatching were highly correlated and strongly influenced by the female parent
and the interaction between both parents of the sea bass Dicentrarchus
labrax. A single significant male effect was detected on hatching and may
reflect a genetic component determining survival from fertilization to
hatching. Egg size and total length of 8-day-old larvae (age of first
feeding) were also subjected to the influence of the female but the two
parameters were not correlated. A significant interaction between both
parents was also observed for length of larvae. The survival rates were
significantly correlated in two consecutive years indicating that
reproductive performances may be repeatable. Although the effect of the male
parent on early sea bass development is shown for the first time, it seems
that most of the parental effects on early performance in this species are
due to females even when hormonal stimulations are performed at very close
prematurational stages of oocyte development.
(IFREMER,
Laboratoire de Recherche en Pisciculture Marine (LRPM), Chemin de
Maguelonne, 34250, Palavas-les-Flots, tel: +33 04 67 50 41 06, fax: +33 04
67 68 28 85, e-mail of C. Fauvel : Christian.Fauvel@ifremer.fr)