Daily growth increments in otoliths of Japanese anchovy larvae Engraulis japonica.

摘要: It was verified that daily deposition of increments in otoliths initiated with the start feeding reared Japanese anchovy larvae. The range and coefficient variation counts within age group were 2-5 6-10%, respectively did not vary age. rate increment considered to be independent growth rate. width each 1-2 μm around nuclear margin increased gradually 6-9 μm, corresponding appearance subdaily rings. otolith allometric respect standard length. relatinship between radius length seemed linear log-log plot. As observed field-collected larvae easier count than those laboratory-reared ones, determination sampls based on expected have a satisfactory accuracy.