Growth and length-weight parameters of Pacific mackerel (Scomber japonicus) in the Gulf of Guayaquil, Ecuador

Zenck, E.C. (1999) Growth and length-weight parameters of Pacific mackerel (Scomber japonicus) in the Gulf of Guayaquil, Ecuador. Naga, the ICLARM Quarterly, 22(3), pp. 32-36.

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Abstract

The seasonally oscillating growth parameters and length-weight relationships for Scomber japonicus caught in the Gulf of Guayaquil, Ecuador, were determined based on length-frequency data from 1989 to 1996, using the FiSAT software package of Gayanilo et al. (1996). Estimates of growth parameters are in general agreement with previous studies on the same species. Results also imply that the growth of Scomber japonicus slows down during the cold season by approximately 50% with respect to the average growth. The mean value of the power b is significantly larger than 3, indicating that the model of allometric growth should be used for the length-weight relationship and calculation of the condition factor.

Item Type: Article
Title: Growth and length-weight parameters of Pacific mackerel (Scomber japonicus) in the Gulf of Guayaquil, Ecuador
Personal Creator/Author:
CreatorsEmail
Zenck, E.C.
Journal or Publication Title: Naga, the ICLARM Quarterly
Volume: 22
Number: 3
Page Range: pp. 32-36
Date: 1999
ISSN: 0116-290X
Issuing Agency: WorldFish Center
Uncontrolled Keywords: Length-weight relationships; Growth; Mackerel fisheries; Ecuador; Scomber japonicus
Subjects: Aquaculture
Fisheries
Item ID: 9593
Depositing User: Mr William Ko
Date Deposited: 03 Oct 2012 12:04
Last Modified: 03 Oct 2012 12:04
URI: http://aquaticcommons.org/id/eprint/9593

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