Fecundity of shortspine thornyhead (Sebastolobus alascanus) and longspine thornyhead (S. altivelis) (Scorpaenidae) from the northeastern Pacific Ocean, determined by stereological and gravimetric techniques*

Cooper, Daniel W. and Pearson, Katherine E. and Gunderson, Donald R. (2005) Fecundity of shortspine thornyhead (Sebastolobus alascanus) and longspine thornyhead (S. altivelis) (Scorpaenidae) from the northeastern Pacific Ocean, determined by stereological and gravimetric techniques*. Fishery Bulletin, 103(1), pp. 15-22.

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Abstract

Fecundity was estimated for shortspine thornyhead (Sebastolobus alascanus) and longspine thornyhead (S. altivelis) from the northeastern Pacific Ocean. Fecundity was not significantly different between shortspine thornyhead off Alaska and the West Coast of the United States and is described by 0.0544 × FL3.978, where FL =fish fork leng th (cm). Fecundity was estimated for longspine thornyhead off the West Coast of the United States and is described by 0.8890 × FL3.249. Contrary to expectations for batch spawners, fecundity estimates for each species were not lower for fish collected during the spawning season compared to those collected prior to the spawning season. Stereological and gravimetric fecundity estimation techniques for shortspine thornyhead provided similar results. The stereological method enabled the estimation of fecundity for samples collected earlier in ovarian development; however it could not be used for fecundity estimation in larger fish.

Item Type: Article
Title: Fecundity of shortspine thornyhead (Sebastolobus alascanus) and longspine thornyhead (S. altivelis) (Scorpaenidae) from the northeastern Pacific Ocean, determined by stereological and gravimetric techniques*
Personal Creator/Author:
CreatorsEmail
Cooper, Daniel W.
Pearson, Katherine E.
Gunderson, Donald R.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 103
Number: 1
Page Range: pp. 15-22
Date: 2005
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 9637
Depositing User: Patti M. Marraro
Date Deposited: 13 Aug 2012 16:06
Last Modified: 13 Aug 2012 16:06
URI: http://aquaticcommons.org/id/eprint/9637

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