The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
Age validation of the first, second, and third annulus from the dorsal fin rays of lingcod (Ophiodon elongatus)
-
2001
-
[PDF-899.45 KB]
Details:
-
Personal Author:
-
Corporate Authors:
-
NOAA Program & Office:
-
Description:The first, second, and third annulus were identified in the dorsal fin rays of lingcod (Ophiodon elongatus). These annuli were validated as indicators of age by calculating the total radius of the fin rays of a lingcod that had completed one, two and three years of growth. Fish lengths came from known-age lingcod (from a rearing study and a year-round field sampling program) and modal progression studies. We measured the radii of the first, second, and third hyaline zone (0.36, 0.54, and 0.75 mm, respectively) from commercial and recreational catches of lingcod. The radii were significantly different among the three zones. Further, the radius of each zone corresponded to the total radius of the fin rays of known-age one-, two-, and three-year-old fish, validating them as true annuli.
-
Content Notes:Thomas E. Laidig, Kelly R. Silberberg, and Peter B. Adams.
"June 2001."
System requirements: Adobe Acrobat Reader.
Mode of access: World Wide Web.
Includes bibliographical references (p. 15-19).
-
Keywords:
-
Series:
-
Document Type:
-
Rights Information:Public Domain
-
Compliance:Library
-
Main Document Checksum:
-
Download URL:
-
File Type:
