Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Growth and mortality of the mother-of-pearl <i>Pinctada mazatlanica</i> in natural populations of the east coast of Baja California Sur, Mexico
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Keywords

wild stocks
growth parameters
total mortality
pinctada mazatlanica
south baja california
bancos naturales
crecimiento
mortalidad total
pinctada mazatlanica
baja california sur

How to Cite

Wright López, H., Holguín Quiñones, O., Arreguín Sánchez, F., & Roque Villada, I. (2009). Growth and mortality of the mother-of-pearl <i>Pinctada mazatlanica</i> in natural populations of the east coast of Baja California Sur, Mexico. Revista De Biología Tropical, 57(1-2), 53–61. https://doi.org/10.15517/rbt.v57i1-2.11290

Abstract

The Mexican Pacific mother-of-pearl Pinctada mazatlanica was placed in forbidden fisheries status for the Mexican Federal Government and considered in extinction danger since 1939. This decree was modified in 1994 to allow the capture of spat for research or marine culture. We estimated the growth and mortality of mother-of-pearl from the eastern littoral of South Baja California wild stock in the periods 1992-93 and 1997-99. We used 38 sample stations at 2 bays and 6 insular complexes. The maximum length was 187.22 mm (179.83-195.81 mm, P > 0.95). Seasonal von Bertalanffy growth (ELEFAN I routine) values are: L∞ = 193.31 mm, k = 0.54 year-1, t0 = -0.1805 year, C = 0.49 and WP = 0.75. The growth performance index was Φ’ = 4.305. The total mortality was calculated from a length-converted catch curve Z = 2.03 año -1. Length-weight relationship W(i) = 0.0005418 * L(i)2.7301. The growth parameters were similar to those for Pinctada margaritifera var. cumingi (open ocean wild stocks). The wild stock oysters differ from culture individuals at experimental repopulation conditions in Paz Bay. The total mortality is similar to that for Pinctada radiata in the Red Sea
https://doi.org/10.15517/rbt.v57i1-2.11290
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