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Free Content Life history parameters of chub mackerel (Scomber japonicus) from two areas off Chile

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Age, growth, maturity, and natural mortality estimates were made for chub mackerel (Scomber japonicus Houttuyn, 1782) captured off the Chilean Pacific coast. The von Bertalanffy growth parameters for combined sexes from north and central-south areas were L = 36.9 cm, k = 0.22 yr–1, and t 0 = –1.35 yrs, and L = 40.0 cm, k = 0.23 yr–1, and t 0 = –1.34 yrs, respectively. The spawning period in the northern area ranged from November to February of each year; it was restricted to January and February in the central-south area. The size at maturity (Lm 50%) estimated for the north and central south areas, respectively, were 25.1 and 29.6 cm fork length (FL) in males, and 25.9 and 28.1 cm FL in females. Natural mortality was similar in the two areas: 0.45 yr–1 in the north and 0.46 yr –1 in the central-south region. Results support the existence of two stocks off Chile's southeastern coast.

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Document Type: Research Article

Publication date: July 1, 2014

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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