Primary growth increments in otoliths of cod larvae (Gadus morhua L.) of the Arcto-Norwegian cod stock
Abstract
Primary growth increments have been detected in the otoliths of wild-caught, first-feeding cod
larvae, living in a habitat where the light intensity is above the light threshold for visual feeding
during 24 hours, and where the larvae were observed to have captured prey organisms both day
and night. The comparison of increment counts and estimated age based on larval morphological
characters, indicate a daily periodicity of the increments, but the relationship between the variates
is not very strong in the very early larval stages.
Publisher
[Fiskeridirektoratets havforskningsinstitutt]Series
Fiskeridirektoratets skrifter, Serie Havundersøkelservol 17 no 7