IMPACTS OF EGG AND LARVAL SIZE ON SURVIVAL AND GROWTH
OF ATLANTIC COD UNDER DIFFERENT FEEDING CONDITIONS
Y. Zhao, Y.Chen, J.A. Brown-2001
Journal of Fish Biology, 59(3): 569-581
Abstract:
Large eggs (1.38mm) of Atlantic cod reared
in the laboratory produced large larvae. However, large larvae
had low survival rates. Results also indicated that
the first few days' of growth of cod larvae mainly
resulted in an increase in mass. Exogenous feeding tended
to result in faster growth than endogenous feeding. In
the delayed feeding groups (larvae not fed until 67
degree-days), larvae from large eggs grew faster than
those from small eggs (1.28mm) after feeding commenced,
while there was no significant difference in growth
rate within feeding groups. Compensatory growth was
detected in the delayed feeding groups.
(Department of Biology, Memorial University of
Newfoundland, St John's, Newfoundland, Canada, A1B 3X9, Tel.: +1 709 737
4396; fax: +1 709 737 3018; email:yzhao@morgan.ucs.mun.ca)