Feasibility of ageing Hawaiian Archipelago uku (Aprion virescens)

O'Malley, Joseph M., 1970-; Taylor, Brett M.; Andrews, Allen Hia

doi:10.7289/V5/AR-PIFSC-H-16-06

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Feasibility of ageing Hawaiian Archipelago uku (Aprion virescens)

2016
By O'Malley, Joseph M., 1970- ; Taylor, Brett M. ; Andrews, Allen Hia
Series: Pacific Islands Fisheries Science Center administrative report H ; 16-06

[PDF-1.69 MB]

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Personal Author:

O'Malley, Joseph M., 1970- ; Taylor, Brett M. ; Andrews, Allen Hia

O'Malley, Joseph M., 1970- ; Taylor, Brett M. ; Andrews, Allen Hia Less -
Corporate Authors:

Pacific Islands Fisheries Science Center (U.S.)
NOAA Program & Office:

CoRIS (Coral Reef Information System) ; PIFSC (Pacific Islands Fisheries Science Center) ; NMFS (National Marine Fisheries Service)

CoRIS (Coral Reef Information System) ; PIFSC (Pacific Islands Fisheries Science Center) ; NMFS (National Marine Fisheries Service) Less -
Description:

The green jobfish Aprion virescens (Hawaii local name, uku) is an economically important component of Hawai'i's spearfishing, trolling, and deep handline fisheries (largest total poundage landed and third most valuable non-pelagic species). However, stock status of this large-bodied lutjanid has not been determined since 1990 and a primary reason is a lack of life history information (length-at-age, somatic growth, mortality). We examined the otoliths of this potentially long-lived fish to determine the most efficient method for thin-sectioning otoliths for age interpretation. We then developed an ageing criteria based on 1) edge analysis that confirmed the seasonality of annular mark deposition, 2) validation of the location of the first annual mark using daily ring counts and a corresponding distinct growth mark on the dorsal side of the otolith and, 3) a change in the shape of the otolith cross-section that distinguishes young fish from older fish. Bomb radiocarbon analysis and plots of otolith weight and fish length vs. estimated age revealed that the ageing criteria is acceptable and estimates of precision indicate that reproducible age estimates are possible. The ageing criteria (Appendix A) include annotated reference photographs of otolith thin sections to aid future age readers. [doi:10.7289/V5/AR-PIFSC-H-16-06 (http://dx.doi.org/10.7289/V5/AR-PIFSC-H-16-06)]
Content Notes:

Joseph M. O'Malley, Brett M. Taylor, Allen H. Andrews.

"September 2016."

System requirements: Adobe Acrobat Reader.

Includes bibliographical references (pages 11-15).

O'Malley, J. M., Brett M. Taylor, and Allen H. Andrews. 2016. Feasibility of Ageing Hawaiian Archipelago Uku (Aprion virescens). Pacific Islands Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, Honolulu, HI 96818-5007. Pacific Islands Fish. Sci. Cent. Admin. Rep. H-16-06, 31 p.
Keywords:

[+]

Age Determination Coral Reef Fishes Fishes Lutjanidae Methods
Series:

Pacific Islands Fisheries Science Center administrative report H ; 16-06
DOI:

http://doi.org/10.7289/V5/AR-PIFSC-H-16-06
Document Type:

Administrative Report
Place as Subject:

Hawaii
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:a80651633ec0345a711bb86f5eee20d6b4a4c412148d901d0c94cf63e5a6baf8
Download URL:

https://repository.library.noaa.gov/view/noaa/12107/noaa_12107_DS1.pdf
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Feasibility of ageing Hawaiian Archipelago uku (Aprion virescens)

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