Age, growth, and maturity of cabezon (Scorpaenichthys marmoratus) in California

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Grebel, J. M., & Cailliet, G. M. (2010). Age, growth, and maturity of cabezon (Scorpaenichthys marmoratus) in California. California Fish and Game, 96(1), 36-52.
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TitleAge, growth, and maturity of cabezon (Scorpaenichthys marmoratus) in California
AuthorsJ. Grebel, G. Cailliet
AbstractThe age, growth, and maturity of cabezon (Scorpaenichthys marmoratus) from California were studied from July 2000 - July 2001. Ages were estimated using otoliths (n = 641) and validated using edge analysis. Errors in age estimates were calculated using average percent error, coefficient of variation, and Index of precision. Growth was represented by the von Bertalanffy growth equation and statistically compared between sexes using Analysis of Residual Sum of Squares. Length and age at 50 % maturity was modeled for both sexes using a logistic curve. Females attained a larger size and grew slower (L 0 = 647.2 mm TL, k = 0.17) than males (L 0 = 440.7 mm TL, k = 0.35). Growth appeared to be rapid through age 4 for males and age 6 for females. The oldest male was 13 years old; the oldest female, 14 years. Growth curves were statistically different between sexes (P < .001). Length and age at maturity were estimated for males and females, with males maturing at 297 mm TL (1.9 yrs) and females at 337 mm TL (2.3 yrs).
JournalCalifornia Fish and Game
Date2010
Volume96
Issue1
Start page36
End page52
ISSN0008-1078
SubjectsScorpaenichthys marmoratus
NoteCited By (since 1996):1, Fish and Fisheries

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