Accuracy of sex determination for northeastern Pacific Ocean thornyheads (Sebastolobus altivelis and S. alascanus)

Fruh, Erica L. and Keller, Aimee and Trantham, Jessica and Simon, Victor (2010) Accuracy of sex determination for northeastern Pacific Ocean thornyheads (Sebastolobus altivelis and S. alascanus). Fishery Bulletin, 108(2), pp. 226-232.

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Abstract

Determining the sex of thornyheads (Sebastolobus alascanus and S. altivelis) can be difficult under field conditions. We assessed our ability to correctly assign sex in the field by comparing results from field observations to results obtained in the laboratory through both macroscopic and microscopic examination of gonads. Sex of longspine thornyheads was more difficult to determine than that of shortspine thornyheads and correct determination of sex was signif icantly related to size. By restricting the minimum size of thornyheads to 18 cm for macroscopic determination of sex we reduced the number of fish with misidentified sex by approximately 65%.

Item Type: Article
Title: Accuracy of sex determination for northeastern Pacific Ocean thornyheads (Sebastolobus altivelis and S. alascanus)
Personal Creator/Author:
CreatorsEmail
Fruh, Erica L.
Keller, Aimee
Trantham, Jessica
Simon, Victor
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 108
Number: 2
Page Range: pp. 226-232
Date: 2010
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8760
Depositing User: Patti M. Marraro
Date Deposited: 11 Jun 2012 18:32
Last Modified: 11 Jun 2012 18:32
URI: http://aquaticcommons.org/id/eprint/8760

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