Validity of otolith age determinations for jack mackerel, Trachurus symmetricus, from the Southern California Bight area

Knaggs, Eric H. and Sunada, John S. (1974) Validity of otolith age determinations for jack mackerel, Trachurus symmetricus, from the Southern California Bight area. Long Beach, CA, California Department of Fish and Game, (Marine Resources Technical Report, 21)

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Abstract

The purpose of this study was to ascertain the validity of age determinations using otoliths of jack mackerel. The study consisted of two parts: (1)otoliths were examined for seasonal changes in the hyaline and opaque zones at the edges of otoliths and (2)a dominant year class was followed through consecutive years noting marginal zone changes. (13pp.)

Item Type: Monograph or Serial Issue
Title: Validity of otolith age determinations for jack mackerel, Trachurus symmetricus, from the Southern California Bight area
Personal Creator/Author:
CreatorsEmail
Knaggs, Eric H.
Sunada, John S.
Series Name: Marine Resources Technical Report
Number: 21
Date: 1974
Publisher: California Department of Fish and Game
Place of Publication: Long Beach, CA
Latitude: 34.2655
Longitude: 120.282
Issuing Agency: California Department of Fish and Game
Uncontrolled Keywords: otolith; age determination; jack mackerel; Trachurus symmetricus; Southern California Bight
Subjects: Fisheries
Biology
Item ID: 675
Depositing User: Joan Parker
Date Deposited: 19 Feb 2008 21:36
Last Modified: 29 Sep 2011 21:42
URI: http://aquaticcommons.org/id/eprint/675

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