Geographic and seasonal variations in maturation and growth of female Pacific cod (Gadus macrocephalus) in the Gulf of Alaska and Bering Sea

Stark, James W. (2007) Geographic and seasonal variations in maturation and growth of female Pacific cod (Gadus macrocephalus) in the Gulf of Alaska and Bering Sea. Fishery Bulletin, 105(3), pp. 396-407.

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Official URL: http://fishbull.noaa.gov/1053/stark.pdf

Abstract

This study investigates the temporal stability of length- and age-at-maturity estimates for female Pacific cod (Gadus macrocephalus) in the Gulf of Alaska and eastern Bering Sea. Females reached 50% maturity (A50) at 4.4 years in the Gulf of Alaska and at 4.9 years in the eastern Bering Sea. Total body length at 50% maturity (LT50) was significantly smaller (503 mm) in the Gulf of Alaska than in the eastern Bering Sea (580 mm). The estimated length- and age-at-maturity did not differ significantly between winter and spring in either the Gulf of Alaska (1999) or Bering Sea (2003) areas. The results of this study raised the spawning biomass estimate of female Alaskan Pacific cod from 298×103 t for 2005 to 499×103 t for 2006. The increased spawning biomass estimate resulted in an increased over-fishing limit for Pacific cod.

Item Type: Article
Title: Geographic and seasonal variations in maturation and growth of female Pacific cod (Gadus macrocephalus) in the Gulf of Alaska and Bering Sea
Personal Creator/Author:
CreatorsEmail
Stark, James W.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 105
Number: 3
Page Range: pp. 396-407
Date: 2007
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8882
Depositing User: Patti M. Marraro
Date Deposited: 18 Jun 2012 09:35
Last Modified: 04 Jul 2012 19:31
URI: http://aquaticcommons.org/id/eprint/8882

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