eCite Digital Repository

Validation of age estimates in sparid fishes using fluorochrome marking


Lang, JB and Buxton, CD, Validation of age estimates in sparid fishes using fluorochrome marking, South African Journal of Marine Science, 13 pp. 195 - 203. ISSN 0257-7615 (1993) [Refereed Article]

Restricted - Request a copy

Copyright Statement

Copyright 1993 National Inquiry Services Centre (NISC)

Official URL:

DOI: doi:10.2989/025776193784287284


The marking of sparid otoliths by means of oxytetracycline and alizarin complexone was 'investigated by immersion, feeding and intraperitoneal and intramuscular injections. Of these techniques, immersion for 24 h in a 100-150 mg .1-seawater solution of alizarin complexone was found to be most suitable for marking larval and small juvenile fish. Intramuscular injections of oxytetracycline at a dosage of 250 mg' kg fish-I was the most suitable method for marking the otoliths of juveniles in the laboratory, while dosages between 50 and 100 mg . kg fish-I were used to mark adults in the field. Feeding labelled food to the fish and intraperitoneal injections did not produce a clear mark in the otolith. Auorochrome marks confirmed the daily periodicity of micro-increment formation in some captive sparid species (Diplodus sargus and D. cervinus), and field experiments using Chrysoblephus laticeps showed that this method was a relatively simple way of directly validating age estimates in sparid fish.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fisheries sciences not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Buxton, CD (Professor Colin Buxton)
ID Code:48461
Year Published:1993
Web of Science® Times Cited:39
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2007-08-01
Last Modified:2010-01-20
Downloads:2 View Download Statistics

Repository Staff Only: item control page